mirror of
https://github.com/raphnet/dreamcast_usb
synced 2024-12-21 06:38:52 -05:00
Initial revision
This commit is contained in:
Raphaël Assénat
commit
c0ea2489c0
BIN
.generate_rxcode.sh.swp
Normal file
BIN
.generate_rxcode.sh.swp
Normal file
Binary file not shown.
BIN
.maplebus.c.swp
Normal file
BIN
.maplebus.c.swp
Normal file
Binary file not shown.
85
Makefile
Normal file
85
Makefile
Normal file
@ -0,0 +1,85 @@
|
||||
CC=avr-gcc
|
||||
AS=$(CC)
|
||||
LD=$(CC)
|
||||
PROGNAME=dc_usb
|
||||
CPU=atmega168
|
||||
|
||||
CFLAGS=-Wall -Os -Iusbdrv -I. -mmcu=$(CPU) -DF_CPU=16000000L #-DDEBUG_LEVEL=1
|
||||
LDFLAGS=-Wl,-Map=$(PROGNAME).map -mmcu=$(CPU)
|
||||
AVRDUDE=avrdude -p m168 -P usb -c avrispmkII
|
||||
|
||||
OBJS=usbdrv/usbdrv.o usbdrv/usbdrvasm.o main.o maplebus.o dc_pad.o
|
||||
|
||||
HEXFILE=$(PROGNAME).hex
|
||||
ELFFILE=$(PROGNAME).elf
|
||||
|
||||
# symbolic targets:
|
||||
all: $(HEXFILE)
|
||||
|
||||
.c.o:
|
||||
$(CC) $(CFLAGS) -c $< -o $@
|
||||
|
||||
.S.o:
|
||||
$(CC) $(CFLAGS) -x assembler-with-cpp -c $< -o $@
|
||||
# "-x assembler-with-cpp" should not be necessary since this is the default
|
||||
# file type for the .S (with capital S) extension. However, upper case
|
||||
# characters are not always preserved on Windows. To ensure WinAVR
|
||||
# compatibility define the file type manually.
|
||||
|
||||
.c.s:
|
||||
$(CC) $(CFLAGS) -S $< -o $@
|
||||
|
||||
|
||||
clean:
|
||||
rm -f $(HEXFILE) $(PROGNAME).map $(PROGNAME).elf $(PROGNAME).hex *.o usbdrv/*.o main.s usbdrv/oddebug.s usbdrv/usbdrv.s
|
||||
|
||||
# file targets:
|
||||
$(ELFFILE): $(OBJS)
|
||||
$(LD) $(LDFLAGS) -o $(ELFFILE) $(OBJS)
|
||||
|
||||
$(HEXFILE): $(ELFFILE)
|
||||
rm -f $(HEXFILE)
|
||||
avr-objcopy -j .text -j .data -O ihex $(ELFFILE) $(HEXFILE)
|
||||
./checksize $(ELFFILE)
|
||||
|
||||
|
||||
flash: $(HEXFILE)
|
||||
$(AVRDUDE) -Uflash:w:$(HEXFILE) -B 1.0
|
||||
|
||||
# Extended fuse byte (Datasheet Table 28-5)
|
||||
#
|
||||
# - - - - - BOOTSZ1 BOOTSZ0 BOOTRST
|
||||
# 0 0 0 0 0 0 0 1
|
||||
#
|
||||
EFUSE=0x01
|
||||
|
||||
# Fuse high byte (Datasheet Table 28-6)
|
||||
#
|
||||
# RSTDISBL DWEN SPIEN WDTON EESAVE BODLEVEL2 BODLEVEL1 BODLEVEL0
|
||||
# 1 1 0 1 0 1 0 1
|
||||
#
|
||||
HFUSE=0xd5
|
||||
|
||||
# Fuse low byte (Datasheet Table 28-7)
|
||||
#
|
||||
# CKDIV8 CKOUT SUT1 SUT0 CKSEL3 CKSEL2 CKSEL1 CKSEL0
|
||||
# 1 1 0 1 0 1 1 1
|
||||
#
|
||||
# Full swing crystal oscillator
|
||||
# 0.4 - 20 MHz : CKSEL3..1 011
|
||||
#
|
||||
# Crystal Oscillator, BOD enabled (Table 9-6)
|
||||
# CKSEL0 : 1
|
||||
# SUT1..0 : 01
|
||||
#
|
||||
LFUSE=0xD7
|
||||
|
||||
fuse:
|
||||
$(AVRDUDE) -e -Uefuse:w:$(EFUSE):m -Uhfuse:w:$(HFUSE):m -Ulfuse:w:$(LFUSE):m -B 20.0 -v
|
||||
|
||||
chip_erase:
|
||||
$(AVRDUDE) -e -B 1.0 -F
|
||||
|
||||
reset:
|
||||
$(AVRDUDE) -B 1.0 -F
|
||||
|
||||
35
checksize
Executable file
35
checksize
Executable file
@ -0,0 +1,35 @@
|
||||
#!/bin/sh
|
||||
# Name: checksize
|
||||
# Project: AVR-USB
|
||||
# Author: Christian Starkjohann
|
||||
# Creation Date: 2004-12-29
|
||||
# Tabsize: 4
|
||||
# Copyright: (c) 2005 OBJECTIVE DEVELOPMENT Software GmbH.
|
||||
# Revision: $Id: checksize,v 1.1 2013-10-13 21:01:08 cvs Exp $
|
||||
|
||||
error=0
|
||||
codelimit=8192
|
||||
datalimit=960 # leave 64 bytes for stack
|
||||
|
||||
if [ $# -gt 1 ]; then
|
||||
codelimit="$2"
|
||||
fi
|
||||
if [ $# -gt 2 ]; then
|
||||
datalimit="$3"
|
||||
fi
|
||||
|
||||
set -- `avr-size -d "$1" | awk '/[0-9]/ {print $1 + $2, $2 + $3, $2}'`
|
||||
if [ $1 -gt $codelimit ]; then
|
||||
echo "*** code size $1 exceeds limit of $codelimit"
|
||||
error=1
|
||||
else
|
||||
echo "ROM: $1 bytes (data=$3)"
|
||||
fi
|
||||
if [ $2 -gt $datalimit ]; then
|
||||
echo "*** data size $2 exceeds limit of $datalimit"
|
||||
error=1
|
||||
else
|
||||
echo "RAM: $2 bytes"
|
||||
fi
|
||||
|
||||
exit $error
|
||||
178
dc_pad.c
Normal file
178
dc_pad.c
Normal file
@ -0,0 +1,178 @@
|
||||
/* Saturn to USB : Sega dc controllers to USB adapter
|
||||
* Copyright (C) 2011-2013 Raphaël Assénat
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*
|
||||
* The author may be contacted at raph@raphnet.net
|
||||
*/
|
||||
#include <avr/io.h>
|
||||
#include <avr/interrupt.h>
|
||||
#include <util/delay.h>
|
||||
#include <avr/pgmspace.h>
|
||||
#include <string.h>
|
||||
#include "usbdrv.h"
|
||||
#include "gamepad.h"
|
||||
#include "dc_pad.h"
|
||||
#include "maplebus.h"
|
||||
|
||||
#define MAX_REPORT_SIZE 4
|
||||
#define NUM_REPORTS 1
|
||||
|
||||
// report matching the most recent bytes from the controller
|
||||
static unsigned char last_built_report[NUM_REPORTS][MAX_REPORT_SIZE];
|
||||
|
||||
// the most recently reported bytes
|
||||
static unsigned char last_sent_report[NUM_REPORTS][MAX_REPORT_SIZE];
|
||||
|
||||
static char report_sizes[NUM_REPORTS] = { 4 };
|
||||
static Gamepad dcGamepad;
|
||||
|
||||
static void dcUpdate(void);
|
||||
|
||||
/*
|
||||
* [0] X
|
||||
* [1] Y
|
||||
* [2] Btn 0-7
|
||||
* [3] Btn 8-15
|
||||
*/
|
||||
static const unsigned char dcPadReport[] PROGMEM = {
|
||||
0x05, 0x01, // USAGE_PAGE (Generic Desktop)
|
||||
0x09, 0x05, // USAGE (Game pad)
|
||||
0xa1, 0x01, // COLLECTION (Application)
|
||||
0x09, 0x01, // USAGE (Pointer)
|
||||
0xa1, 0x00, // COLLECTION (Physical)
|
||||
0x09, 0x30, // USAGE (X)
|
||||
0x09, 0x31, // USAGE (Y)
|
||||
0x15, 0x00, // LOGICAL_MINIMUM (0)
|
||||
0x26, 0xff, 0x00, // LOGICAL_MAXIMUM (255)
|
||||
0x75, 0x08, // REPORT_SIZE (8)
|
||||
0x95, 0x02, // REPORT_COUNT (2)
|
||||
0x81, 0x02, // INPUT (Data,Var,Abs)
|
||||
0x05, 0x09, // USAGE_PAGE (Button)
|
||||
0x19, 0x01, // USAGE_MINIMUM (Button 1)
|
||||
0x29, 0x10, // USAGE_MAXIMUM (Button 16)
|
||||
0x15, 0x00, // LOGICAL_MINIMUM (0)
|
||||
0x25, 0x01, // LOGICAL_MAXIMUM (1)
|
||||
0x75, 0x01, // REPORT_SIZE (1)
|
||||
0x95, 0x10, // REPORT_COUNT (16)
|
||||
0x81, 0x02, // INPUT (Data,Var,Abs)
|
||||
0xc0, // END_COLLECTION
|
||||
0xc0, // END_COLLECTION
|
||||
};
|
||||
|
||||
const unsigned char dcPadDevDesc[] PROGMEM = { /* USB device descriptor */
|
||||
18, /* sizeof(usbDescrDevice): length of descriptor in bytes */
|
||||
USBDESCR_DEVICE, /* descriptor type */
|
||||
0x01, 0x01, /* USB version supported */
|
||||
USB_CFG_DEVICE_CLASS,
|
||||
USB_CFG_DEVICE_SUBCLASS,
|
||||
0, /* protocol */
|
||||
8, /* max packet size */
|
||||
0x9B, 0x28, // Vendor ID
|
||||
0x08, 0x00, // Product ID
|
||||
0x00, 0x01, // Version: Minor, Major
|
||||
1, // Manufacturer String
|
||||
2, // Product string
|
||||
3, // Serial number string
|
||||
1, /* number of configurations */
|
||||
};
|
||||
|
||||
static uint32_t request_device_info[1] = { 0x01200000 };
|
||||
static uint32_t get_condition[2] = { 0x09200001, 0x00000001 };
|
||||
|
||||
static void dcInit(void)
|
||||
{
|
||||
dcUpdate();
|
||||
|
||||
dcGamepad.reportDescriptor = (void*)dcPadReport;
|
||||
dcGamepad.reportDescriptorSize = sizeof(dcPadReport);
|
||||
|
||||
dcGamepad.deviceDescriptor = (void*)dcPadDevDesc;
|
||||
dcGamepad.deviceDescriptorSize = sizeof(dcPadDevDesc);
|
||||
|
||||
maple_sendFrame(request_device_info, 1);
|
||||
}
|
||||
|
||||
static void dcReadPad(void)
|
||||
{
|
||||
unsigned char tmp[30];
|
||||
static unsigned char a;
|
||||
int v;
|
||||
unsigned char lrc = 0;
|
||||
int i;
|
||||
|
||||
again:
|
||||
|
||||
maple_sendFrame(get_condition, 2);
|
||||
v = maple_receivePacket(tmp, 30);
|
||||
|
||||
if (v<0)
|
||||
return;
|
||||
|
||||
// 8 : Left trigger
|
||||
// 9 : Right trigger
|
||||
// 10 : Buttons
|
||||
// 11 : Buttons
|
||||
// 12 : Joy Y 2
|
||||
// 13 : Joy X 2
|
||||
// 14 : Y axis
|
||||
// 15 : X axis
|
||||
//
|
||||
|
||||
last_built_report[0][0] = tmp[15]-1;
|
||||
last_built_report[0][1] = tmp[14]-1;
|
||||
last_built_report[0][2] = tmp[10] ^ 0xff;
|
||||
last_built_report[0][3] = tmp[11] ^ 0xff;
|
||||
}
|
||||
|
||||
static void dcUpdate(void)
|
||||
{
|
||||
dcReadPad();
|
||||
}
|
||||
|
||||
static char dcBuildReport(unsigned char *reportBuffer, unsigned char report_id)
|
||||
{
|
||||
report_id = 0;
|
||||
|
||||
if (reportBuffer != NULL)
|
||||
{
|
||||
memcpy(reportBuffer, last_built_report[report_id], report_sizes[report_id]);
|
||||
}
|
||||
memcpy(last_sent_report[report_id], last_built_report[report_id],
|
||||
report_sizes[report_id]);
|
||||
|
||||
return report_sizes[report_id];
|
||||
}
|
||||
|
||||
static char dcChanged(unsigned char report_id)
|
||||
{
|
||||
report_id = 0;
|
||||
|
||||
return memcmp(last_built_report[report_id], last_sent_report[report_id],
|
||||
report_sizes[report_id]);
|
||||
}
|
||||
|
||||
static Gamepad dcGamepad = {
|
||||
num_reports: 1,
|
||||
init: dcInit,
|
||||
update: dcUpdate,
|
||||
changed: dcChanged,
|
||||
buildReport: dcBuildReport
|
||||
};
|
||||
|
||||
Gamepad *dcGetGamepad(void)
|
||||
{
|
||||
return &dcGamepad;
|
||||
}
|
||||
27
gamepad.h
Normal file
27
gamepad.h
Normal file
@ -0,0 +1,27 @@
|
||||
#ifndef _gamepad_h__
|
||||
#define _gamepad_h__
|
||||
|
||||
typedef struct {
|
||||
// size of reports built by buildReport
|
||||
char num_reports;
|
||||
|
||||
int reportDescriptorSize;
|
||||
void *reportDescriptor; // must be in flash
|
||||
|
||||
int deviceDescriptorSize; // if 0, use default
|
||||
void *deviceDescriptor; // must be in flash
|
||||
|
||||
void (*init)(void);
|
||||
void (*update)(void);
|
||||
|
||||
char (*changed)(unsigned char id);
|
||||
/**
|
||||
* \param id Controller id (starting at 1 to match report IDs)
|
||||
* \return The number of bytes written to buf.
|
||||
* */
|
||||
char (*buildReport)(unsigned char *buf, unsigned char id);
|
||||
} Gamepad;
|
||||
|
||||
#endif // _gamepad_h__
|
||||
|
||||
|
||||
12
generate_rxcode.sh
Executable file
12
generate_rxcode.sh
Executable file
@ -0,0 +1,12 @@
|
||||
#!/bin/bash
|
||||
|
||||
NSAMPLES=640
|
||||
|
||||
echo "// Generated by generate_rxcode.sh"
|
||||
echo "// Number of samples: $NSAMPLES"
|
||||
|
||||
for i in `seq 0 $NSAMPLES`
|
||||
do
|
||||
echo "\" in r16, %1\n st z+, r16 \n\" // sample $i "
|
||||
#echo "\" in r16, %1\n sbi 0x5, 4\ncbi 0x5, 4 \n\" // sample $i "
|
||||
done
|
||||
317
main.c
Normal file
317
main.c
Normal file
@ -0,0 +1,317 @@
|
||||
/* Saturn to USB : Sega saturn controllers to USB adapter
|
||||
* Copyright (C) 2011 Raphaël Assénat
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*
|
||||
* The author may be contacted at raph@raphnet.net
|
||||
*/
|
||||
#include <avr/io.h>
|
||||
#include <avr/interrupt.h>
|
||||
#include <avr/pgmspace.h>
|
||||
#include <avr/wdt.h>
|
||||
#include <avr/sleep.h>
|
||||
#include <util/delay.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "usbdrv.h"
|
||||
#include "oddebug.h"
|
||||
#include "gamepad.h"
|
||||
|
||||
#include "dc_pad.h"
|
||||
|
||||
static usbMsgPtr_t rt_usbHidReportDescriptor = USB_NO_MSG;
|
||||
static usbMsgLen_t rt_usbHidReportDescriptorSize = 0;
|
||||
|
||||
static usbMsgPtr_t rt_usbDeviceDescriptor = USB_NO_MSG;
|
||||
static usbMsgLen_t rt_usbDeviceDescriptorSize = 0;
|
||||
|
||||
#if defined(__AVR_ATmega168__) || defined(__AVR_ATmega168A__) || \
|
||||
defined(__AVR_ATmega168P__) || defined(__AVR_ATmega328__) || \
|
||||
defined(__AVR_ATmega328P__) || defined(__AVR_ATmega88__) || \
|
||||
defined(__AVR_ATmega88A__) || defined(__AVR_ATmega88P__) || \
|
||||
defined(__AVR_ATmega88PA__)
|
||||
#define AT168_COMPATIBLE
|
||||
#endif
|
||||
|
||||
|
||||
|
||||
const PROGMEM int usbDescriptorStringSerialNumber[] = {
|
||||
USB_STRING_DESCRIPTOR_HEADER(4),
|
||||
'1','0','0','0'
|
||||
};
|
||||
|
||||
char usbDescriptorConfiguration[] = { 0 }; // dummy
|
||||
|
||||
uchar my_usbDescriptorConfiguration[] = { /* USB configuration descriptor */
|
||||
9, /* sizeof(usbDescriptorConfiguration): length of descriptor in bytes */
|
||||
USBDESCR_CONFIG, /* descriptor type */
|
||||
18 + 7 * USB_CFG_HAVE_INTRIN_ENDPOINT + 9, 0,
|
||||
/* total length of data returned (including inlined descriptors) */
|
||||
1, /* number of interfaces in this configuration */
|
||||
1, /* index of this configuration */
|
||||
0, /* configuration name string index */
|
||||
#if USB_CFG_IS_SELF_POWERED
|
||||
USBATTR_SELFPOWER, /* attributes */
|
||||
#else
|
||||
USBATTR_BUSPOWER, /* attributes */
|
||||
#endif
|
||||
USB_CFG_MAX_BUS_POWER/2, /* max USB current in 2mA units */
|
||||
/* interface descriptor follows inline: */
|
||||
9, /* sizeof(usbDescrInterface): length of descriptor in bytes */
|
||||
USBDESCR_INTERFACE, /* descriptor type */
|
||||
0, /* index of this interface */
|
||||
0, /* alternate setting for this interface */
|
||||
USB_CFG_HAVE_INTRIN_ENDPOINT, /* endpoints excl 0: number of endpoint descriptors to follow */
|
||||
USB_CFG_INTERFACE_CLASS,
|
||||
USB_CFG_INTERFACE_SUBCLASS,
|
||||
USB_CFG_INTERFACE_PROTOCOL,
|
||||
0, /* string index for interface */
|
||||
//#if (USB_CFG_DESCR_PROPS_HID & 0xff) /* HID descriptor */
|
||||
9, /* sizeof(usbDescrHID): length of descriptor in bytes */
|
||||
USBDESCR_HID, /* descriptor type: HID */
|
||||
0x01, 0x01, /* BCD representation of HID version */
|
||||
0x00, /* target country code */
|
||||
0x01, /* number of HID Report (or other HID class) Descriptor infos to follow */
|
||||
0x22, /* descriptor type: report */
|
||||
USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH, 0, /* total length of report descriptor */
|
||||
//#endif
|
||||
#if USB_CFG_HAVE_INTRIN_ENDPOINT /* endpoint descriptor for endpoint 1 */
|
||||
7, /* sizeof(usbDescrEndpoint) */
|
||||
USBDESCR_ENDPOINT, /* descriptor type = endpoint */
|
||||
0x81, /* IN endpoint number 1 */
|
||||
0x03, /* attrib: Interrupt endpoint */
|
||||
8, 0, /* maximum packet size */
|
||||
USB_CFG_INTR_POLL_INTERVAL, /* in ms */
|
||||
#endif
|
||||
};
|
||||
|
||||
static Gamepad *curGamepad;
|
||||
|
||||
|
||||
/* ----------------------- hardware I/O abstraction ------------------------ */
|
||||
|
||||
static void hardwareInit(void)
|
||||
{
|
||||
/* PORTB
|
||||
*
|
||||
* Bit Description Direction Level/pu
|
||||
* 0 Jumpers common Out 0
|
||||
* 1 JP1 In 1
|
||||
* 2 JP2 In 1
|
||||
* 3 MOSI In 1
|
||||
* 4 MISO In 1
|
||||
* 5 SCK In 1
|
||||
* 6 -
|
||||
* 7 -
|
||||
*/
|
||||
DDRB = 0x01;
|
||||
PORTB = 0xFE;
|
||||
|
||||
// temporaty debug pin PB4
|
||||
DDRB |= 0x10;
|
||||
|
||||
|
||||
/*
|
||||
* PORTC
|
||||
*
|
||||
* Bit
|
||||
* 0 Pin 1
|
||||
* 1 Pin 5
|
||||
*/
|
||||
DDRC = 0x00;
|
||||
PORTC = 0xff;
|
||||
|
||||
/*
|
||||
* For port D, activate pull-ups on all lines except the D+, D- and bit 1.
|
||||
*
|
||||
* For historical reasons (a mistake on an old PCB), bit 1
|
||||
* is now always connected with bit 0. So bit 1 configured
|
||||
* as an input without pullup.
|
||||
*
|
||||
* Usb pin are init as output, low. (device reset). They are released
|
||||
* later when usbReset() is called.
|
||||
*/
|
||||
PORTD = 0xf8;
|
||||
DDRD = 0x01 | 0x04;
|
||||
|
||||
/* Configure timers */
|
||||
#if defined(AT168_COMPATIBLE)
|
||||
TCCR2A= (1<<WGM21);
|
||||
TCCR2B=(1<<CS22)|(1<<CS21)|(1<<CS20);
|
||||
OCR2A=196; // for 60 hz
|
||||
#else
|
||||
TCCR2 = (1<<WGM21)|(1<<CS22)|(1<<CS21)|(1<<CS20);
|
||||
OCR2 = 196; // for 60 hz
|
||||
#endif
|
||||
}
|
||||
|
||||
#if defined(AT168_COMPATIBLE)
|
||||
|
||||
#define mustPollControllers() (TIFR2 & (1<<OCF2A))
|
||||
#define clrPollControllers() do { TIFR2 = 1<<OCF2A; } while(0)
|
||||
|
||||
#else
|
||||
|
||||
#define mustPollControllers() (TIFR & (1<<OCF2))
|
||||
#define clrPollControllers() do { TIFR = 1<<OCF2; } while(0)
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
|
||||
|
||||
static void usbReset(void)
|
||||
{
|
||||
/* [...] a single ended zero or SE0 can be used to signify a device
|
||||
reset if held for more than 10mS. A SE0 is generated by holding
|
||||
both th D- and D+ low (< 0.3V).
|
||||
*/
|
||||
|
||||
PORTD &= ~(0x01 | 0x04); // Set D+ and D- to 0
|
||||
DDRD |= 0x01 | 0x04;
|
||||
_delay_ms(15);
|
||||
DDRD &= ~(0x01 | 0x04);
|
||||
}
|
||||
|
||||
static uchar reportBuffer[16]; /* buffer for HID reports */
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
/* ----------------------------- USB interface ----------------------------- */
|
||||
/* ------------------------------------------------------------------------- */
|
||||
|
||||
|
||||
usbMsgLen_t usbFunctionDescriptor(struct usbRequest *rq)
|
||||
{
|
||||
if ((rq->bmRequestType & USBRQ_TYPE_MASK) != USBRQ_TYPE_STANDARD)
|
||||
return 0;
|
||||
|
||||
if (rq->bRequest == USBRQ_GET_DESCRIPTOR)
|
||||
{
|
||||
// USB spec 9.4.3, high byte is descriptor type
|
||||
switch (rq->wValue.bytes[1])
|
||||
{
|
||||
case USBDESCR_DEVICE:
|
||||
usbMsgPtr = rt_usbDeviceDescriptor;
|
||||
return rt_usbDeviceDescriptorSize;
|
||||
case USBDESCR_HID_REPORT:
|
||||
usbMsgPtr = rt_usbHidReportDescriptor;
|
||||
return rt_usbHidReportDescriptorSize;
|
||||
case USBDESCR_CONFIG:
|
||||
usbMsgPtr = (usbMsgPtr_t)my_usbDescriptorConfiguration;
|
||||
return sizeof(my_usbDescriptorConfiguration);
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
usbMsgLen_t usbFunctionSetup(uchar data[8])
|
||||
{
|
||||
usbRequest_t *rq = (void *)data;
|
||||
|
||||
usbMsgPtr = (usbMsgPtr_t)reportBuffer;
|
||||
if((rq->bmRequestType & USBRQ_TYPE_MASK) == USBRQ_TYPE_CLASS){ /* class request type */
|
||||
if(rq->bRequest == USBRQ_HID_GET_REPORT){ /* wValue: ReportType (highbyte), ReportID (lowbyte) */
|
||||
return curGamepad->buildReport(reportBuffer, rq->wValue.bytes[0]);
|
||||
}
|
||||
}else{
|
||||
/* no vendor specific requests implemented */
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
|
||||
|
||||
int main(void)
|
||||
{
|
||||
char must_report = 0;
|
||||
int i;
|
||||
|
||||
hardwareInit();
|
||||
|
||||
curGamepad = dcGetGamepad();
|
||||
|
||||
// A small delay is required before calling init. Otherwise,
|
||||
// the shuttlemouse is not ready and the adapter runs
|
||||
// in joystick mode.
|
||||
_delay_ms(25);
|
||||
|
||||
curGamepad->init();
|
||||
|
||||
// configure report descriptor according to
|
||||
// the current gamepad
|
||||
rt_usbHidReportDescriptor = (usbMsgPtr_t)curGamepad->reportDescriptor;
|
||||
rt_usbHidReportDescriptorSize = curGamepad->reportDescriptorSize;
|
||||
rt_usbDeviceDescriptor = (usbMsgPtr_t)curGamepad->deviceDescriptor;
|
||||
rt_usbDeviceDescriptorSize = curGamepad->deviceDescriptorSize;
|
||||
|
||||
// patch the config descriptor with the HID report descriptor size
|
||||
my_usbDescriptorConfiguration[25] = rt_usbHidReportDescriptorSize;
|
||||
|
||||
usbReset();
|
||||
usbInit();
|
||||
set_sleep_mode(SLEEP_MODE_IDLE);
|
||||
sei();
|
||||
|
||||
|
||||
for(;;){ /* main event loop */
|
||||
wdt_reset();
|
||||
|
||||
// this must be called at each 50 ms or less
|
||||
usbPoll();
|
||||
|
||||
if (mustPollControllers())
|
||||
{
|
||||
clrPollControllers();
|
||||
|
||||
sleep_enable();
|
||||
sleep_cpu();
|
||||
sleep_disable();
|
||||
_delay_us(100);
|
||||
|
||||
curGamepad->update();
|
||||
|
||||
for (i=0; i<curGamepad->num_reports; i++) {
|
||||
if (curGamepad->changed(i+1)) {
|
||||
must_report |= (1<<i);
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
if(must_report)
|
||||
{
|
||||
|
||||
for (i=0; i<curGamepad->num_reports; i++) {
|
||||
int len;
|
||||
|
||||
if (!(must_report & (1<<i)))
|
||||
continue;
|
||||
|
||||
len = curGamepad->buildReport(reportBuffer, i+1);
|
||||
while(!usbInterruptIsReady()) {
|
||||
usbPoll();
|
||||
}
|
||||
usbSetInterrupt(reportBuffer, len);
|
||||
must_report &= ~(1<<i);
|
||||
}
|
||||
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
347
maplebus.c
Normal file
347
maplebus.c
Normal file
@ -0,0 +1,347 @@
|
||||
#include <avr/io.h>
|
||||
#include <util/delay.h>
|
||||
#include "usbdrv.h"
|
||||
|
||||
//
|
||||
//
|
||||
// PORTC0 : Pin 1
|
||||
// PORTC1 : Pin 5
|
||||
//
|
||||
|
||||
void maple_init(void)
|
||||
{
|
||||
}
|
||||
|
||||
#define MAPLE_BUF_SIZE 640
|
||||
static unsigned char maplebuf[MAPLE_BUF_SIZE];
|
||||
static unsigned char buf_used;
|
||||
static unsigned char buf_phase;
|
||||
|
||||
#define PIN_1 0x01
|
||||
#define PIN_5 0x02
|
||||
static void buf_reset(void)
|
||||
{
|
||||
buf_used = 0;
|
||||
buf_phase = 0;
|
||||
}
|
||||
|
||||
static void buf_addBit(char value)
|
||||
{
|
||||
if (buf_phase & 0x01) {
|
||||
maplebuf[buf_used] = PIN_5;
|
||||
if (value) {
|
||||
maplebuf[buf_used] |= PIN_1; // prepare data
|
||||
}
|
||||
buf_used++;
|
||||
}
|
||||
else {
|
||||
maplebuf[buf_used] = PIN_1;
|
||||
if (value) {
|
||||
maplebuf[buf_used] |= PIN_5; // prepare data
|
||||
}
|
||||
buf_used++;
|
||||
}
|
||||
buf_phase ^= 1;
|
||||
}
|
||||
|
||||
static int maplebus_decode(unsigned char *data, unsigned int maxlen)
|
||||
{
|
||||
unsigned char dst_b;
|
||||
unsigned int dst_pos;
|
||||
unsigned char last;
|
||||
unsigned char last_fell;
|
||||
int i;
|
||||
|
||||
// Look for the initial phase 1 (Pin 1 high, Pin 5 low). This
|
||||
// is to skip what we got of the sync/start of frame sequence.
|
||||
//
|
||||
for (i=0; i<MAPLE_BUF_SIZE; i++) {
|
||||
if ((maplebuf[i]&0x03) == 0x01)
|
||||
break;
|
||||
}
|
||||
if (i==MAPLE_BUF_SIZE) {
|
||||
return -1; // timeout
|
||||
}
|
||||
|
||||
dst_pos = 0;
|
||||
data[0] = 0;
|
||||
dst_b = 0x80;
|
||||
last = maplebuf[i] & 0x03;
|
||||
last_fell = 0;
|
||||
for (; i<MAPLE_BUF_SIZE; i++) {
|
||||
unsigned char fell;
|
||||
unsigned char cur = maplebuf[i];
|
||||
|
||||
if (cur == last) {
|
||||
continue; // no change
|
||||
}
|
||||
|
||||
fell = last & (cur ^ last);
|
||||
|
||||
if (!fell) {
|
||||
// pin(s) changed, but none fell.
|
||||
last = cur;
|
||||
continue;
|
||||
}
|
||||
|
||||
if (fell == last_fell) {
|
||||
// two identical consecutive phases marks the end of the packet.
|
||||
PORTB |= 0x10;
|
||||
PORTB &= ~0x10;
|
||||
break;
|
||||
}
|
||||
|
||||
// when any of the two pins fall, the
|
||||
// other pin is the data.
|
||||
if (fell) {
|
||||
if (fell == 0x03) {
|
||||
// two pins at the same time!
|
||||
PORTB |= 0x10;
|
||||
PORTB &= ~0x10;
|
||||
}
|
||||
|
||||
if (cur) {
|
||||
data[dst_pos] |= dst_b;
|
||||
}
|
||||
else {
|
||||
}
|
||||
}
|
||||
|
||||
dst_b >>= 1;
|
||||
if (!dst_b) {
|
||||
dst_b = 0x80;
|
||||
dst_pos++;
|
||||
data[dst_pos] = 0;
|
||||
}
|
||||
|
||||
last_fell = fell;
|
||||
last = cur;
|
||||
}
|
||||
|
||||
|
||||
#if 0
|
||||
for (i=0; i<dst_pos; i++) {
|
||||
int j;
|
||||
for (j=0; j<8; j++) {
|
||||
if (data[i] & (0x80 >> j)) {
|
||||
PORTB |= 0x10;
|
||||
} else {
|
||||
PORTB &= ~0x10;
|
||||
}
|
||||
_delay_us(5);
|
||||
}
|
||||
}
|
||||
PORTB &= ~0x10;
|
||||
#endif
|
||||
|
||||
return dst_pos;
|
||||
}
|
||||
|
||||
/**
|
||||
* \param data Destination buffer to store reply (payload + crc + eot)
|
||||
* \param maxlen The length of the destination buffer
|
||||
* \return -1 on timeout, -2 lrc/frame error, otherwise the number of bytes received
|
||||
*/
|
||||
int maple_receivePacket(unsigned char *data, unsigned int maxlen)
|
||||
{
|
||||
unsigned char *tmp = maplebuf;
|
||||
unsigned char lrc;
|
||||
int res, i;
|
||||
|
||||
//
|
||||
// __ _ _ _
|
||||
// |_____| |_| |_| |_
|
||||
// ___ _ _ _
|
||||
// |_| |___| |_| |_
|
||||
// 310022011023102310
|
||||
// ^ ^ ^ ^^ ^^
|
||||
//
|
||||
|
||||
asm volatile(
|
||||
" push r30 \n" // 2
|
||||
" push r31 \n" // 2
|
||||
|
||||
// " sbi 0x5, 4 \n" // PB4
|
||||
// " cbi 0x5, 4 \n"
|
||||
|
||||
// Loop until a change is detected.
|
||||
" in r17, %1 \n"
|
||||
"wait_start: \n"
|
||||
" in r16, %1 \n"
|
||||
" cp r16, r17 \n"
|
||||
" breq wait_start \n"
|
||||
|
||||
" sbi 0x5, 4 \n" // PB4
|
||||
" cbi 0x5, 4 \n"
|
||||
|
||||
// We will loose the first bit(s), but
|
||||
// it's only the start of frame.
|
||||
|
||||
"start_rx: \n"
|
||||
#include "rxcode.asm"
|
||||
|
||||
" sbi 0x5, 4 \n" // PB4
|
||||
" cbi 0x5, 4 \n"
|
||||
" pop r31 \n" // 2
|
||||
" pop r30 \n" // 2
|
||||
: "=z"(tmp)
|
||||
: "I" (_SFR_IO_ADDR(PINC))
|
||||
: "r16","r17") ;
|
||||
|
||||
res = maplebus_decode(data, maxlen);
|
||||
if (res<=0)
|
||||
return res;
|
||||
|
||||
// A packet containts n groups of 4 bytes, plus 1 byte crc.
|
||||
if (((res-1) & 0x3) != 0) {
|
||||
return -2; // frame error
|
||||
}
|
||||
|
||||
for (lrc=0, i=0; i<res; i++) {
|
||||
lrc ^= data[i];
|
||||
}
|
||||
if (lrc)
|
||||
return -2; // LRC error
|
||||
|
||||
return res-1; // remove lrc
|
||||
}
|
||||
|
||||
void maple_sendPacket(unsigned char *data, unsigned char len)
|
||||
{
|
||||
int i;
|
||||
unsigned char b;
|
||||
|
||||
// SET PINS
|
||||
// SET PINS
|
||||
// SET PINS
|
||||
// DLY
|
||||
|
||||
buf_reset();
|
||||
for (i=0; i<len; i++) {
|
||||
for (b=0x80; b; b>>=1)
|
||||
{
|
||||
buf_addBit(data[i] & b);
|
||||
}
|
||||
}
|
||||
|
||||
// Output
|
||||
PORTC |= 0x03;
|
||||
DDRC |= 0x03;
|
||||
|
||||
// DC controller pin 1 and pin 5
|
||||
#define SET_1 " sbi %0, 0\n"
|
||||
#define CLR_1 " cbi %0, 0\n"
|
||||
#define SET_5 " sbi %0, 1\n"
|
||||
#define CLR_5 " cbi %0, 1\n"
|
||||
#define DLY_8 " nop\nnop\nnop\nnop\nnop\nnop\nnop\nnop\n"
|
||||
#define DLY_4 " nop\nnop\nnop\nnop\n"
|
||||
|
||||
asm volatile(
|
||||
"push r31\n"
|
||||
"push r30\n"
|
||||
|
||||
"mov r19, %1 \n" // Length in bytes
|
||||
"ldi r20, 0x01 \n" // phase 1 pin 1 high, pin 5 low
|
||||
"ldi r21, 0x02 \n" // phase 2 pin 1 low, pin 2 high
|
||||
|
||||
"ld r16, z+ \n"
|
||||
|
||||
// Sync
|
||||
SET_1 SET_5
|
||||
DLY_8
|
||||
CLR_1
|
||||
DLY_8
|
||||
|
||||
CLR_5
|
||||
DLY_8
|
||||
SET_5
|
||||
DLY_8
|
||||
|
||||
CLR_5
|
||||
DLY_8
|
||||
SET_5
|
||||
DLY_8
|
||||
|
||||
CLR_5
|
||||
DLY_8
|
||||
SET_5
|
||||
DLY_8
|
||||
|
||||
CLR_5
|
||||
DLY_8
|
||||
SET_5
|
||||
DLY_8
|
||||
|
||||
SET_1
|
||||
CLR_5
|
||||
|
||||
// Pin 5 is low, Pin 1 is high. Ready for 1st phase
|
||||
|
||||
// Note: Coded for 16Mhz (8 cycles = 500ns)
|
||||
"next_byte:\n"
|
||||
|
||||
"out %0, r20 \n" // 1 initial phase 1 state
|
||||
"out %0, r16 \n" // 1 data
|
||||
"cbi %0, 0 \n" // 1 falling edge on pin 1
|
||||
"ld r16, z+ \n" // 2 load phase 2 data
|
||||
"dec r19 \n" // 1 Decrement counter for brne below
|
||||
"nop \n" // 1
|
||||
"nop \n" // 1
|
||||
|
||||
"out %0, r21 \n" // 1 initial phase 2 state
|
||||
"out %0, r16 \n" // 1 data
|
||||
"cbi %0, 1 \n" // 1 falling edge on pin 5
|
||||
"ld r16, z+ \n" // 2
|
||||
"nop \n" // 1
|
||||
"brne next_byte \n" // 2
|
||||
|
||||
"done:\n"
|
||||
|
||||
// End of transmission
|
||||
SET_5 DLY_4 CLR_5 DLY_4
|
||||
CLR_1 DLY_8 SET_1 DLY_8 CLR_1 DLY_8 SET_1 DLY_4 SET_5
|
||||
|
||||
"pop r30 \n"
|
||||
"pop r31 \n"
|
||||
|
||||
|
||||
:
|
||||
: "I" (_SFR_IO_ADDR(PORTC)), "r"(buf_used/2), "z"(maplebuf)
|
||||
: "r1","r16","r17","r18","r19","r20","r21"
|
||||
);
|
||||
|
||||
DDRC &= ~0x03;
|
||||
}
|
||||
|
||||
|
||||
void maple_sendFrame(uint32_t *words, unsigned char nwords)
|
||||
{
|
||||
uint8_t data[nwords * 4 + 1];
|
||||
uint8_t *d;
|
||||
uint8_t lrc=0;
|
||||
int i;
|
||||
|
||||
d = data;
|
||||
for (i=0; i<nwords; i++) {
|
||||
*d = words[i];
|
||||
lrc ^= *d;
|
||||
d++;
|
||||
|
||||
*d = words[i] >> 8;
|
||||
lrc ^= *d;
|
||||
d++;
|
||||
|
||||
*d = words[i] >> 16;
|
||||
lrc ^= *d;
|
||||
d++;
|
||||
|
||||
*d = words[i] >> 24;
|
||||
lrc ^= *d;
|
||||
d++;
|
||||
}
|
||||
data[nwords *4] = lrc;
|
||||
|
||||
maple_sendPacket(data, nwords * 4 + 1);
|
||||
}
|
||||
|
||||
|
||||
12
maplebus.h
Normal file
12
maplebus.h
Normal file
@ -0,0 +1,12 @@
|
||||
#ifndef _maplebus_h__
|
||||
#define _maplebus_h__
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
void maple_init(void);
|
||||
void maple_sendPacket(unsigned char *data, unsigned char len);
|
||||
void maple_sendFrame(uint32_t *words, unsigned char nwords);
|
||||
|
||||
int maple_receivePacket(unsigned char *data, unsigned int maxlen);
|
||||
|
||||
#endif // _maplebus_h__
|
||||
643
rxcode.asm
Normal file
643
rxcode.asm
Normal file
@ -0,0 +1,643 @@
|
||||
// Generated by generate_rxcode.sh
|
||||
// Number of samples: 640
|
||||
" in r16, %1\n st z+, r16 \n" // sample 0
|
||||
" in r16, %1\n st z+, r16 \n" // sample 1
|
||||
" in r16, %1\n st z+, r16 \n" // sample 2
|
||||
" in r16, %1\n st z+, r16 \n" // sample 3
|
||||
" in r16, %1\n st z+, r16 \n" // sample 4
|
||||
" in r16, %1\n st z+, r16 \n" // sample 5
|
||||
" in r16, %1\n st z+, r16 \n" // sample 6
|
||||
" in r16, %1\n st z+, r16 \n" // sample 7
|
||||
" in r16, %1\n st z+, r16 \n" // sample 8
|
||||
" in r16, %1\n st z+, r16 \n" // sample 9
|
||||
" in r16, %1\n st z+, r16 \n" // sample 10
|
||||
" in r16, %1\n st z+, r16 \n" // sample 11
|
||||
" in r16, %1\n st z+, r16 \n" // sample 12
|
||||
" in r16, %1\n st z+, r16 \n" // sample 13
|
||||
" in r16, %1\n st z+, r16 \n" // sample 14
|
||||
" in r16, %1\n st z+, r16 \n" // sample 15
|
||||
" in r16, %1\n st z+, r16 \n" // sample 16
|
||||
" in r16, %1\n st z+, r16 \n" // sample 17
|
||||
" in r16, %1\n st z+, r16 \n" // sample 18
|
||||
" in r16, %1\n st z+, r16 \n" // sample 19
|
||||
" in r16, %1\n st z+, r16 \n" // sample 20
|
||||
" in r16, %1\n st z+, r16 \n" // sample 21
|
||||
" in r16, %1\n st z+, r16 \n" // sample 22
|
||||
" in r16, %1\n st z+, r16 \n" // sample 23
|
||||
" in r16, %1\n st z+, r16 \n" // sample 24
|
||||
" in r16, %1\n st z+, r16 \n" // sample 25
|
||||
" in r16, %1\n st z+, r16 \n" // sample 26
|
||||
" in r16, %1\n st z+, r16 \n" // sample 27
|
||||
" in r16, %1\n st z+, r16 \n" // sample 28
|
||||
" in r16, %1\n st z+, r16 \n" // sample 29
|
||||
" in r16, %1\n st z+, r16 \n" // sample 30
|
||||
" in r16, %1\n st z+, r16 \n" // sample 31
|
||||
" in r16, %1\n st z+, r16 \n" // sample 32
|
||||
" in r16, %1\n st z+, r16 \n" // sample 33
|
||||
" in r16, %1\n st z+, r16 \n" // sample 34
|
||||
" in r16, %1\n st z+, r16 \n" // sample 35
|
||||
" in r16, %1\n st z+, r16 \n" // sample 36
|
||||
" in r16, %1\n st z+, r16 \n" // sample 37
|
||||
" in r16, %1\n st z+, r16 \n" // sample 38
|
||||
" in r16, %1\n st z+, r16 \n" // sample 39
|
||||
" in r16, %1\n st z+, r16 \n" // sample 40
|
||||
" in r16, %1\n st z+, r16 \n" // sample 41
|
||||
" in r16, %1\n st z+, r16 \n" // sample 42
|
||||
" in r16, %1\n st z+, r16 \n" // sample 43
|
||||
" in r16, %1\n st z+, r16 \n" // sample 44
|
||||
" in r16, %1\n st z+, r16 \n" // sample 45
|
||||
" in r16, %1\n st z+, r16 \n" // sample 46
|
||||
" in r16, %1\n st z+, r16 \n" // sample 47
|
||||
" in r16, %1\n st z+, r16 \n" // sample 48
|
||||
" in r16, %1\n st z+, r16 \n" // sample 49
|
||||
" in r16, %1\n st z+, r16 \n" // sample 50
|
||||
" in r16, %1\n st z+, r16 \n" // sample 51
|
||||
" in r16, %1\n st z+, r16 \n" // sample 52
|
||||
" in r16, %1\n st z+, r16 \n" // sample 53
|
||||
" in r16, %1\n st z+, r16 \n" // sample 54
|
||||
" in r16, %1\n st z+, r16 \n" // sample 55
|
||||
" in r16, %1\n st z+, r16 \n" // sample 56
|
||||
" in r16, %1\n st z+, r16 \n" // sample 57
|
||||
" in r16, %1\n st z+, r16 \n" // sample 58
|
||||
" in r16, %1\n st z+, r16 \n" // sample 59
|
||||
" in r16, %1\n st z+, r16 \n" // sample 60
|
||||
" in r16, %1\n st z+, r16 \n" // sample 61
|
||||
" in r16, %1\n st z+, r16 \n" // sample 62
|
||||
" in r16, %1\n st z+, r16 \n" // sample 63
|
||||
" in r16, %1\n st z+, r16 \n" // sample 64
|
||||
" in r16, %1\n st z+, r16 \n" // sample 65
|
||||
" in r16, %1\n st z+, r16 \n" // sample 66
|
||||
" in r16, %1\n st z+, r16 \n" // sample 67
|
||||
" in r16, %1\n st z+, r16 \n" // sample 68
|
||||
" in r16, %1\n st z+, r16 \n" // sample 69
|
||||
" in r16, %1\n st z+, r16 \n" // sample 70
|
||||
" in r16, %1\n st z+, r16 \n" // sample 71
|
||||
" in r16, %1\n st z+, r16 \n" // sample 72
|
||||
" in r16, %1\n st z+, r16 \n" // sample 73
|
||||
" in r16, %1\n st z+, r16 \n" // sample 74
|
||||
" in r16, %1\n st z+, r16 \n" // sample 75
|
||||
" in r16, %1\n st z+, r16 \n" // sample 76
|
||||
" in r16, %1\n st z+, r16 \n" // sample 77
|
||||
" in r16, %1\n st z+, r16 \n" // sample 78
|
||||
" in r16, %1\n st z+, r16 \n" // sample 79
|
||||
" in r16, %1\n st z+, r16 \n" // sample 80
|
||||
" in r16, %1\n st z+, r16 \n" // sample 81
|
||||
" in r16, %1\n st z+, r16 \n" // sample 82
|
||||
" in r16, %1\n st z+, r16 \n" // sample 83
|
||||
" in r16, %1\n st z+, r16 \n" // sample 84
|
||||
" in r16, %1\n st z+, r16 \n" // sample 85
|
||||
" in r16, %1\n st z+, r16 \n" // sample 86
|
||||
" in r16, %1\n st z+, r16 \n" // sample 87
|
||||
" in r16, %1\n st z+, r16 \n" // sample 88
|
||||
" in r16, %1\n st z+, r16 \n" // sample 89
|
||||
" in r16, %1\n st z+, r16 \n" // sample 90
|
||||
" in r16, %1\n st z+, r16 \n" // sample 91
|
||||
" in r16, %1\n st z+, r16 \n" // sample 92
|
||||
" in r16, %1\n st z+, r16 \n" // sample 93
|
||||
" in r16, %1\n st z+, r16 \n" // sample 94
|
||||
" in r16, %1\n st z+, r16 \n" // sample 95
|
||||
" in r16, %1\n st z+, r16 \n" // sample 96
|
||||
" in r16, %1\n st z+, r16 \n" // sample 97
|
||||
" in r16, %1\n st z+, r16 \n" // sample 98
|
||||
" in r16, %1\n st z+, r16 \n" // sample 99
|
||||
" in r16, %1\n st z+, r16 \n" // sample 100
|
||||
" in r16, %1\n st z+, r16 \n" // sample 101
|
||||
" in r16, %1\n st z+, r16 \n" // sample 102
|
||||
" in r16, %1\n st z+, r16 \n" // sample 103
|
||||
" in r16, %1\n st z+, r16 \n" // sample 104
|
||||
" in r16, %1\n st z+, r16 \n" // sample 105
|
||||
" in r16, %1\n st z+, r16 \n" // sample 106
|
||||
" in r16, %1\n st z+, r16 \n" // sample 107
|
||||
" in r16, %1\n st z+, r16 \n" // sample 108
|
||||
" in r16, %1\n st z+, r16 \n" // sample 109
|
||||
" in r16, %1\n st z+, r16 \n" // sample 110
|
||||
" in r16, %1\n st z+, r16 \n" // sample 111
|
||||
" in r16, %1\n st z+, r16 \n" // sample 112
|
||||
" in r16, %1\n st z+, r16 \n" // sample 113
|
||||
" in r16, %1\n st z+, r16 \n" // sample 114
|
||||
" in r16, %1\n st z+, r16 \n" // sample 115
|
||||
" in r16, %1\n st z+, r16 \n" // sample 116
|
||||
" in r16, %1\n st z+, r16 \n" // sample 117
|
||||
" in r16, %1\n st z+, r16 \n" // sample 118
|
||||
" in r16, %1\n st z+, r16 \n" // sample 119
|
||||
" in r16, %1\n st z+, r16 \n" // sample 120
|
||||
" in r16, %1\n st z+, r16 \n" // sample 121
|
||||
" in r16, %1\n st z+, r16 \n" // sample 122
|
||||
" in r16, %1\n st z+, r16 \n" // sample 123
|
||||
" in r16, %1\n st z+, r16 \n" // sample 124
|
||||
" in r16, %1\n st z+, r16 \n" // sample 125
|
||||
" in r16, %1\n st z+, r16 \n" // sample 126
|
||||
" in r16, %1\n st z+, r16 \n" // sample 127
|
||||
" in r16, %1\n st z+, r16 \n" // sample 128
|
||||
" in r16, %1\n st z+, r16 \n" // sample 129
|
||||
" in r16, %1\n st z+, r16 \n" // sample 130
|
||||
" in r16, %1\n st z+, r16 \n" // sample 131
|
||||
" in r16, %1\n st z+, r16 \n" // sample 132
|
||||
" in r16, %1\n st z+, r16 \n" // sample 133
|
||||
" in r16, %1\n st z+, r16 \n" // sample 134
|
||||
" in r16, %1\n st z+, r16 \n" // sample 135
|
||||
" in r16, %1\n st z+, r16 \n" // sample 136
|
||||
" in r16, %1\n st z+, r16 \n" // sample 137
|
||||
" in r16, %1\n st z+, r16 \n" // sample 138
|
||||
" in r16, %1\n st z+, r16 \n" // sample 139
|
||||
" in r16, %1\n st z+, r16 \n" // sample 140
|
||||
" in r16, %1\n st z+, r16 \n" // sample 141
|
||||
" in r16, %1\n st z+, r16 \n" // sample 142
|
||||
" in r16, %1\n st z+, r16 \n" // sample 143
|
||||
" in r16, %1\n st z+, r16 \n" // sample 144
|
||||
" in r16, %1\n st z+, r16 \n" // sample 145
|
||||
" in r16, %1\n st z+, r16 \n" // sample 146
|
||||
" in r16, %1\n st z+, r16 \n" // sample 147
|
||||
" in r16, %1\n st z+, r16 \n" // sample 148
|
||||
" in r16, %1\n st z+, r16 \n" // sample 149
|
||||
" in r16, %1\n st z+, r16 \n" // sample 150
|
||||
" in r16, %1\n st z+, r16 \n" // sample 151
|
||||
" in r16, %1\n st z+, r16 \n" // sample 152
|
||||
" in r16, %1\n st z+, r16 \n" // sample 153
|
||||
" in r16, %1\n st z+, r16 \n" // sample 154
|
||||
" in r16, %1\n st z+, r16 \n" // sample 155
|
||||
" in r16, %1\n st z+, r16 \n" // sample 156
|
||||
" in r16, %1\n st z+, r16 \n" // sample 157
|
||||
" in r16, %1\n st z+, r16 \n" // sample 158
|
||||
" in r16, %1\n st z+, r16 \n" // sample 159
|
||||
" in r16, %1\n st z+, r16 \n" // sample 160
|
||||
" in r16, %1\n st z+, r16 \n" // sample 161
|
||||
" in r16, %1\n st z+, r16 \n" // sample 162
|
||||
" in r16, %1\n st z+, r16 \n" // sample 163
|
||||
" in r16, %1\n st z+, r16 \n" // sample 164
|
||||
" in r16, %1\n st z+, r16 \n" // sample 165
|
||||
" in r16, %1\n st z+, r16 \n" // sample 166
|
||||
" in r16, %1\n st z+, r16 \n" // sample 167
|
||||
" in r16, %1\n st z+, r16 \n" // sample 168
|
||||
" in r16, %1\n st z+, r16 \n" // sample 169
|
||||
" in r16, %1\n st z+, r16 \n" // sample 170
|
||||
" in r16, %1\n st z+, r16 \n" // sample 171
|
||||
" in r16, %1\n st z+, r16 \n" // sample 172
|
||||
" in r16, %1\n st z+, r16 \n" // sample 173
|
||||
" in r16, %1\n st z+, r16 \n" // sample 174
|
||||
" in r16, %1\n st z+, r16 \n" // sample 175
|
||||
" in r16, %1\n st z+, r16 \n" // sample 176
|
||||
" in r16, %1\n st z+, r16 \n" // sample 177
|
||||
" in r16, %1\n st z+, r16 \n" // sample 178
|
||||
" in r16, %1\n st z+, r16 \n" // sample 179
|
||||
" in r16, %1\n st z+, r16 \n" // sample 180
|
||||
" in r16, %1\n st z+, r16 \n" // sample 181
|
||||
" in r16, %1\n st z+, r16 \n" // sample 182
|
||||
" in r16, %1\n st z+, r16 \n" // sample 183
|
||||
" in r16, %1\n st z+, r16 \n" // sample 184
|
||||
" in r16, %1\n st z+, r16 \n" // sample 185
|
||||
" in r16, %1\n st z+, r16 \n" // sample 186
|
||||
" in r16, %1\n st z+, r16 \n" // sample 187
|
||||
" in r16, %1\n st z+, r16 \n" // sample 188
|
||||
" in r16, %1\n st z+, r16 \n" // sample 189
|
||||
" in r16, %1\n st z+, r16 \n" // sample 190
|
||||
" in r16, %1\n st z+, r16 \n" // sample 191
|
||||
" in r16, %1\n st z+, r16 \n" // sample 192
|
||||
" in r16, %1\n st z+, r16 \n" // sample 193
|
||||
" in r16, %1\n st z+, r16 \n" // sample 194
|
||||
" in r16, %1\n st z+, r16 \n" // sample 195
|
||||
" in r16, %1\n st z+, r16 \n" // sample 196
|
||||
" in r16, %1\n st z+, r16 \n" // sample 197
|
||||
" in r16, %1\n st z+, r16 \n" // sample 198
|
||||
" in r16, %1\n st z+, r16 \n" // sample 199
|
||||
" in r16, %1\n st z+, r16 \n" // sample 200
|
||||
" in r16, %1\n st z+, r16 \n" // sample 201
|
||||
" in r16, %1\n st z+, r16 \n" // sample 202
|
||||
" in r16, %1\n st z+, r16 \n" // sample 203
|
||||
" in r16, %1\n st z+, r16 \n" // sample 204
|
||||
" in r16, %1\n st z+, r16 \n" // sample 205
|
||||
" in r16, %1\n st z+, r16 \n" // sample 206
|
||||
" in r16, %1\n st z+, r16 \n" // sample 207
|
||||
" in r16, %1\n st z+, r16 \n" // sample 208
|
||||
" in r16, %1\n st z+, r16 \n" // sample 209
|
||||
" in r16, %1\n st z+, r16 \n" // sample 210
|
||||
" in r16, %1\n st z+, r16 \n" // sample 211
|
||||
" in r16, %1\n st z+, r16 \n" // sample 212
|
||||
" in r16, %1\n st z+, r16 \n" // sample 213
|
||||
" in r16, %1\n st z+, r16 \n" // sample 214
|
||||
" in r16, %1\n st z+, r16 \n" // sample 215
|
||||
" in r16, %1\n st z+, r16 \n" // sample 216
|
||||
" in r16, %1\n st z+, r16 \n" // sample 217
|
||||
" in r16, %1\n st z+, r16 \n" // sample 218
|
||||
" in r16, %1\n st z+, r16 \n" // sample 219
|
||||
" in r16, %1\n st z+, r16 \n" // sample 220
|
||||
" in r16, %1\n st z+, r16 \n" // sample 221
|
||||
" in r16, %1\n st z+, r16 \n" // sample 222
|
||||
" in r16, %1\n st z+, r16 \n" // sample 223
|
||||
" in r16, %1\n st z+, r16 \n" // sample 224
|
||||
" in r16, %1\n st z+, r16 \n" // sample 225
|
||||
" in r16, %1\n st z+, r16 \n" // sample 226
|
||||
" in r16, %1\n st z+, r16 \n" // sample 227
|
||||
" in r16, %1\n st z+, r16 \n" // sample 228
|
||||
" in r16, %1\n st z+, r16 \n" // sample 229
|
||||
" in r16, %1\n st z+, r16 \n" // sample 230
|
||||
" in r16, %1\n st z+, r16 \n" // sample 231
|
||||
" in r16, %1\n st z+, r16 \n" // sample 232
|
||||
" in r16, %1\n st z+, r16 \n" // sample 233
|
||||
" in r16, %1\n st z+, r16 \n" // sample 234
|
||||
" in r16, %1\n st z+, r16 \n" // sample 235
|
||||
" in r16, %1\n st z+, r16 \n" // sample 236
|
||||
" in r16, %1\n st z+, r16 \n" // sample 237
|
||||
" in r16, %1\n st z+, r16 \n" // sample 238
|
||||
" in r16, %1\n st z+, r16 \n" // sample 239
|
||||
" in r16, %1\n st z+, r16 \n" // sample 240
|
||||
" in r16, %1\n st z+, r16 \n" // sample 241
|
||||
" in r16, %1\n st z+, r16 \n" // sample 242
|
||||
" in r16, %1\n st z+, r16 \n" // sample 243
|
||||
" in r16, %1\n st z+, r16 \n" // sample 244
|
||||
" in r16, %1\n st z+, r16 \n" // sample 245
|
||||
" in r16, %1\n st z+, r16 \n" // sample 246
|
||||
" in r16, %1\n st z+, r16 \n" // sample 247
|
||||
" in r16, %1\n st z+, r16 \n" // sample 248
|
||||
" in r16, %1\n st z+, r16 \n" // sample 249
|
||||
" in r16, %1\n st z+, r16 \n" // sample 250
|
||||
" in r16, %1\n st z+, r16 \n" // sample 251
|
||||
" in r16, %1\n st z+, r16 \n" // sample 252
|
||||
" in r16, %1\n st z+, r16 \n" // sample 253
|
||||
" in r16, %1\n st z+, r16 \n" // sample 254
|
||||
" in r16, %1\n st z+, r16 \n" // sample 255
|
||||
" in r16, %1\n st z+, r16 \n" // sample 256
|
||||
" in r16, %1\n st z+, r16 \n" // sample 257
|
||||
" in r16, %1\n st z+, r16 \n" // sample 258
|
||||
" in r16, %1\n st z+, r16 \n" // sample 259
|
||||
" in r16, %1\n st z+, r16 \n" // sample 260
|
||||
" in r16, %1\n st z+, r16 \n" // sample 261
|
||||
" in r16, %1\n st z+, r16 \n" // sample 262
|
||||
" in r16, %1\n st z+, r16 \n" // sample 263
|
||||
" in r16, %1\n st z+, r16 \n" // sample 264
|
||||
" in r16, %1\n st z+, r16 \n" // sample 265
|
||||
" in r16, %1\n st z+, r16 \n" // sample 266
|
||||
" in r16, %1\n st z+, r16 \n" // sample 267
|
||||
" in r16, %1\n st z+, r16 \n" // sample 268
|
||||
" in r16, %1\n st z+, r16 \n" // sample 269
|
||||
" in r16, %1\n st z+, r16 \n" // sample 270
|
||||
" in r16, %1\n st z+, r16 \n" // sample 271
|
||||
" in r16, %1\n st z+, r16 \n" // sample 272
|
||||
" in r16, %1\n st z+, r16 \n" // sample 273
|
||||
" in r16, %1\n st z+, r16 \n" // sample 274
|
||||
" in r16, %1\n st z+, r16 \n" // sample 275
|
||||
" in r16, %1\n st z+, r16 \n" // sample 276
|
||||
" in r16, %1\n st z+, r16 \n" // sample 277
|
||||
" in r16, %1\n st z+, r16 \n" // sample 278
|
||||
" in r16, %1\n st z+, r16 \n" // sample 279
|
||||
" in r16, %1\n st z+, r16 \n" // sample 280
|
||||
" in r16, %1\n st z+, r16 \n" // sample 281
|
||||
" in r16, %1\n st z+, r16 \n" // sample 282
|
||||
" in r16, %1\n st z+, r16 \n" // sample 283
|
||||
" in r16, %1\n st z+, r16 \n" // sample 284
|
||||
" in r16, %1\n st z+, r16 \n" // sample 285
|
||||
" in r16, %1\n st z+, r16 \n" // sample 286
|
||||
" in r16, %1\n st z+, r16 \n" // sample 287
|
||||
" in r16, %1\n st z+, r16 \n" // sample 288
|
||||
" in r16, %1\n st z+, r16 \n" // sample 289
|
||||
" in r16, %1\n st z+, r16 \n" // sample 290
|
||||
" in r16, %1\n st z+, r16 \n" // sample 291
|
||||
" in r16, %1\n st z+, r16 \n" // sample 292
|
||||
" in r16, %1\n st z+, r16 \n" // sample 293
|
||||
" in r16, %1\n st z+, r16 \n" // sample 294
|
||||
" in r16, %1\n st z+, r16 \n" // sample 295
|
||||
" in r16, %1\n st z+, r16 \n" // sample 296
|
||||
" in r16, %1\n st z+, r16 \n" // sample 297
|
||||
" in r16, %1\n st z+, r16 \n" // sample 298
|
||||
" in r16, %1\n st z+, r16 \n" // sample 299
|
||||
" in r16, %1\n st z+, r16 \n" // sample 300
|
||||
" in r16, %1\n st z+, r16 \n" // sample 301
|
||||
" in r16, %1\n st z+, r16 \n" // sample 302
|
||||
" in r16, %1\n st z+, r16 \n" // sample 303
|
||||
" in r16, %1\n st z+, r16 \n" // sample 304
|
||||
" in r16, %1\n st z+, r16 \n" // sample 305
|
||||
" in r16, %1\n st z+, r16 \n" // sample 306
|
||||
" in r16, %1\n st z+, r16 \n" // sample 307
|
||||
" in r16, %1\n st z+, r16 \n" // sample 308
|
||||
" in r16, %1\n st z+, r16 \n" // sample 309
|
||||
" in r16, %1\n st z+, r16 \n" // sample 310
|
||||
" in r16, %1\n st z+, r16 \n" // sample 311
|
||||
" in r16, %1\n st z+, r16 \n" // sample 312
|
||||
" in r16, %1\n st z+, r16 \n" // sample 313
|
||||
" in r16, %1\n st z+, r16 \n" // sample 314
|
||||
" in r16, %1\n st z+, r16 \n" // sample 315
|
||||
" in r16, %1\n st z+, r16 \n" // sample 316
|
||||
" in r16, %1\n st z+, r16 \n" // sample 317
|
||||
" in r16, %1\n st z+, r16 \n" // sample 318
|
||||
" in r16, %1\n st z+, r16 \n" // sample 319
|
||||
" in r16, %1\n st z+, r16 \n" // sample 320
|
||||
" in r16, %1\n st z+, r16 \n" // sample 321
|
||||
" in r16, %1\n st z+, r16 \n" // sample 322
|
||||
" in r16, %1\n st z+, r16 \n" // sample 323
|
||||
" in r16, %1\n st z+, r16 \n" // sample 324
|
||||
" in r16, %1\n st z+, r16 \n" // sample 325
|
||||
" in r16, %1\n st z+, r16 \n" // sample 326
|
||||
" in r16, %1\n st z+, r16 \n" // sample 327
|
||||
" in r16, %1\n st z+, r16 \n" // sample 328
|
||||
" in r16, %1\n st z+, r16 \n" // sample 329
|
||||
" in r16, %1\n st z+, r16 \n" // sample 330
|
||||
" in r16, %1\n st z+, r16 \n" // sample 331
|
||||
" in r16, %1\n st z+, r16 \n" // sample 332
|
||||
" in r16, %1\n st z+, r16 \n" // sample 333
|
||||
" in r16, %1\n st z+, r16 \n" // sample 334
|
||||
" in r16, %1\n st z+, r16 \n" // sample 335
|
||||
" in r16, %1\n st z+, r16 \n" // sample 336
|
||||
" in r16, %1\n st z+, r16 \n" // sample 337
|
||||
" in r16, %1\n st z+, r16 \n" // sample 338
|
||||
" in r16, %1\n st z+, r16 \n" // sample 339
|
||||
" in r16, %1\n st z+, r16 \n" // sample 340
|
||||
" in r16, %1\n st z+, r16 \n" // sample 341
|
||||
" in r16, %1\n st z+, r16 \n" // sample 342
|
||||
" in r16, %1\n st z+, r16 \n" // sample 343
|
||||
" in r16, %1\n st z+, r16 \n" // sample 344
|
||||
" in r16, %1\n st z+, r16 \n" // sample 345
|
||||
" in r16, %1\n st z+, r16 \n" // sample 346
|
||||
" in r16, %1\n st z+, r16 \n" // sample 347
|
||||
" in r16, %1\n st z+, r16 \n" // sample 348
|
||||
" in r16, %1\n st z+, r16 \n" // sample 349
|
||||
" in r16, %1\n st z+, r16 \n" // sample 350
|
||||
" in r16, %1\n st z+, r16 \n" // sample 351
|
||||
" in r16, %1\n st z+, r16 \n" // sample 352
|
||||
" in r16, %1\n st z+, r16 \n" // sample 353
|
||||
" in r16, %1\n st z+, r16 \n" // sample 354
|
||||
" in r16, %1\n st z+, r16 \n" // sample 355
|
||||
" in r16, %1\n st z+, r16 \n" // sample 356
|
||||
" in r16, %1\n st z+, r16 \n" // sample 357
|
||||
" in r16, %1\n st z+, r16 \n" // sample 358
|
||||
" in r16, %1\n st z+, r16 \n" // sample 359
|
||||
" in r16, %1\n st z+, r16 \n" // sample 360
|
||||
" in r16, %1\n st z+, r16 \n" // sample 361
|
||||
" in r16, %1\n st z+, r16 \n" // sample 362
|
||||
" in r16, %1\n st z+, r16 \n" // sample 363
|
||||
" in r16, %1\n st z+, r16 \n" // sample 364
|
||||
" in r16, %1\n st z+, r16 \n" // sample 365
|
||||
" in r16, %1\n st z+, r16 \n" // sample 366
|
||||
" in r16, %1\n st z+, r16 \n" // sample 367
|
||||
" in r16, %1\n st z+, r16 \n" // sample 368
|
||||
" in r16, %1\n st z+, r16 \n" // sample 369
|
||||
" in r16, %1\n st z+, r16 \n" // sample 370
|
||||
" in r16, %1\n st z+, r16 \n" // sample 371
|
||||
" in r16, %1\n st z+, r16 \n" // sample 372
|
||||
" in r16, %1\n st z+, r16 \n" // sample 373
|
||||
" in r16, %1\n st z+, r16 \n" // sample 374
|
||||
" in r16, %1\n st z+, r16 \n" // sample 375
|
||||
" in r16, %1\n st z+, r16 \n" // sample 376
|
||||
" in r16, %1\n st z+, r16 \n" // sample 377
|
||||
" in r16, %1\n st z+, r16 \n" // sample 378
|
||||
" in r16, %1\n st z+, r16 \n" // sample 379
|
||||
" in r16, %1\n st z+, r16 \n" // sample 380
|
||||
" in r16, %1\n st z+, r16 \n" // sample 381
|
||||
" in r16, %1\n st z+, r16 \n" // sample 382
|
||||
" in r16, %1\n st z+, r16 \n" // sample 383
|
||||
" in r16, %1\n st z+, r16 \n" // sample 384
|
||||
" in r16, %1\n st z+, r16 \n" // sample 385
|
||||
" in r16, %1\n st z+, r16 \n" // sample 386
|
||||
" in r16, %1\n st z+, r16 \n" // sample 387
|
||||
" in r16, %1\n st z+, r16 \n" // sample 388
|
||||
" in r16, %1\n st z+, r16 \n" // sample 389
|
||||
" in r16, %1\n st z+, r16 \n" // sample 390
|
||||
" in r16, %1\n st z+, r16 \n" // sample 391
|
||||
" in r16, %1\n st z+, r16 \n" // sample 392
|
||||
" in r16, %1\n st z+, r16 \n" // sample 393
|
||||
" in r16, %1\n st z+, r16 \n" // sample 394
|
||||
" in r16, %1\n st z+, r16 \n" // sample 395
|
||||
" in r16, %1\n st z+, r16 \n" // sample 396
|
||||
" in r16, %1\n st z+, r16 \n" // sample 397
|
||||
" in r16, %1\n st z+, r16 \n" // sample 398
|
||||
" in r16, %1\n st z+, r16 \n" // sample 399
|
||||
" in r16, %1\n st z+, r16 \n" // sample 400
|
||||
" in r16, %1\n st z+, r16 \n" // sample 401
|
||||
" in r16, %1\n st z+, r16 \n" // sample 402
|
||||
" in r16, %1\n st z+, r16 \n" // sample 403
|
||||
" in r16, %1\n st z+, r16 \n" // sample 404
|
||||
" in r16, %1\n st z+, r16 \n" // sample 405
|
||||
" in r16, %1\n st z+, r16 \n" // sample 406
|
||||
" in r16, %1\n st z+, r16 \n" // sample 407
|
||||
" in r16, %1\n st z+, r16 \n" // sample 408
|
||||
" in r16, %1\n st z+, r16 \n" // sample 409
|
||||
" in r16, %1\n st z+, r16 \n" // sample 410
|
||||
" in r16, %1\n st z+, r16 \n" // sample 411
|
||||
" in r16, %1\n st z+, r16 \n" // sample 412
|
||||
" in r16, %1\n st z+, r16 \n" // sample 413
|
||||
" in r16, %1\n st z+, r16 \n" // sample 414
|
||||
" in r16, %1\n st z+, r16 \n" // sample 415
|
||||
" in r16, %1\n st z+, r16 \n" // sample 416
|
||||
" in r16, %1\n st z+, r16 \n" // sample 417
|
||||
" in r16, %1\n st z+, r16 \n" // sample 418
|
||||
" in r16, %1\n st z+, r16 \n" // sample 419
|
||||
" in r16, %1\n st z+, r16 \n" // sample 420
|
||||
" in r16, %1\n st z+, r16 \n" // sample 421
|
||||
" in r16, %1\n st z+, r16 \n" // sample 422
|
||||
" in r16, %1\n st z+, r16 \n" // sample 423
|
||||
" in r16, %1\n st z+, r16 \n" // sample 424
|
||||
" in r16, %1\n st z+, r16 \n" // sample 425
|
||||
" in r16, %1\n st z+, r16 \n" // sample 426
|
||||
" in r16, %1\n st z+, r16 \n" // sample 427
|
||||
" in r16, %1\n st z+, r16 \n" // sample 428
|
||||
" in r16, %1\n st z+, r16 \n" // sample 429
|
||||
" in r16, %1\n st z+, r16 \n" // sample 430
|
||||
" in r16, %1\n st z+, r16 \n" // sample 431
|
||||
" in r16, %1\n st z+, r16 \n" // sample 432
|
||||
" in r16, %1\n st z+, r16 \n" // sample 433
|
||||
" in r16, %1\n st z+, r16 \n" // sample 434
|
||||
" in r16, %1\n st z+, r16 \n" // sample 435
|
||||
" in r16, %1\n st z+, r16 \n" // sample 436
|
||||
" in r16, %1\n st z+, r16 \n" // sample 437
|
||||
" in r16, %1\n st z+, r16 \n" // sample 438
|
||||
" in r16, %1\n st z+, r16 \n" // sample 439
|
||||
" in r16, %1\n st z+, r16 \n" // sample 440
|
||||
" in r16, %1\n st z+, r16 \n" // sample 441
|
||||
" in r16, %1\n st z+, r16 \n" // sample 442
|
||||
" in r16, %1\n st z+, r16 \n" // sample 443
|
||||
" in r16, %1\n st z+, r16 \n" // sample 444
|
||||
" in r16, %1\n st z+, r16 \n" // sample 445
|
||||
" in r16, %1\n st z+, r16 \n" // sample 446
|
||||
" in r16, %1\n st z+, r16 \n" // sample 447
|
||||
" in r16, %1\n st z+, r16 \n" // sample 448
|
||||
" in r16, %1\n st z+, r16 \n" // sample 449
|
||||
" in r16, %1\n st z+, r16 \n" // sample 450
|
||||
" in r16, %1\n st z+, r16 \n" // sample 451
|
||||
" in r16, %1\n st z+, r16 \n" // sample 452
|
||||
" in r16, %1\n st z+, r16 \n" // sample 453
|
||||
" in r16, %1\n st z+, r16 \n" // sample 454
|
||||
" in r16, %1\n st z+, r16 \n" // sample 455
|
||||
" in r16, %1\n st z+, r16 \n" // sample 456
|
||||
" in r16, %1\n st z+, r16 \n" // sample 457
|
||||
" in r16, %1\n st z+, r16 \n" // sample 458
|
||||
" in r16, %1\n st z+, r16 \n" // sample 459
|
||||
" in r16, %1\n st z+, r16 \n" // sample 460
|
||||
" in r16, %1\n st z+, r16 \n" // sample 461
|
||||
" in r16, %1\n st z+, r16 \n" // sample 462
|
||||
" in r16, %1\n st z+, r16 \n" // sample 463
|
||||
" in r16, %1\n st z+, r16 \n" // sample 464
|
||||
" in r16, %1\n st z+, r16 \n" // sample 465
|
||||
" in r16, %1\n st z+, r16 \n" // sample 466
|
||||
" in r16, %1\n st z+, r16 \n" // sample 467
|
||||
" in r16, %1\n st z+, r16 \n" // sample 468
|
||||
" in r16, %1\n st z+, r16 \n" // sample 469
|
||||
" in r16, %1\n st z+, r16 \n" // sample 470
|
||||
" in r16, %1\n st z+, r16 \n" // sample 471
|
||||
" in r16, %1\n st z+, r16 \n" // sample 472
|
||||
" in r16, %1\n st z+, r16 \n" // sample 473
|
||||
" in r16, %1\n st z+, r16 \n" // sample 474
|
||||
" in r16, %1\n st z+, r16 \n" // sample 475
|
||||
" in r16, %1\n st z+, r16 \n" // sample 476
|
||||
" in r16, %1\n st z+, r16 \n" // sample 477
|
||||
" in r16, %1\n st z+, r16 \n" // sample 478
|
||||
" in r16, %1\n st z+, r16 \n" // sample 479
|
||||
" in r16, %1\n st z+, r16 \n" // sample 480
|
||||
" in r16, %1\n st z+, r16 \n" // sample 481
|
||||
" in r16, %1\n st z+, r16 \n" // sample 482
|
||||
" in r16, %1\n st z+, r16 \n" // sample 483
|
||||
" in r16, %1\n st z+, r16 \n" // sample 484
|
||||
" in r16, %1\n st z+, r16 \n" // sample 485
|
||||
" in r16, %1\n st z+, r16 \n" // sample 486
|
||||
" in r16, %1\n st z+, r16 \n" // sample 487
|
||||
" in r16, %1\n st z+, r16 \n" // sample 488
|
||||
" in r16, %1\n st z+, r16 \n" // sample 489
|
||||
" in r16, %1\n st z+, r16 \n" // sample 490
|
||||
" in r16, %1\n st z+, r16 \n" // sample 491
|
||||
" in r16, %1\n st z+, r16 \n" // sample 492
|
||||
" in r16, %1\n st z+, r16 \n" // sample 493
|
||||
" in r16, %1\n st z+, r16 \n" // sample 494
|
||||
" in r16, %1\n st z+, r16 \n" // sample 495
|
||||
" in r16, %1\n st z+, r16 \n" // sample 496
|
||||
" in r16, %1\n st z+, r16 \n" // sample 497
|
||||
" in r16, %1\n st z+, r16 \n" // sample 498
|
||||
" in r16, %1\n st z+, r16 \n" // sample 499
|
||||
" in r16, %1\n st z+, r16 \n" // sample 500
|
||||
" in r16, %1\n st z+, r16 \n" // sample 501
|
||||
" in r16, %1\n st z+, r16 \n" // sample 502
|
||||
" in r16, %1\n st z+, r16 \n" // sample 503
|
||||
" in r16, %1\n st z+, r16 \n" // sample 504
|
||||
" in r16, %1\n st z+, r16 \n" // sample 505
|
||||
" in r16, %1\n st z+, r16 \n" // sample 506
|
||||
" in r16, %1\n st z+, r16 \n" // sample 507
|
||||
" in r16, %1\n st z+, r16 \n" // sample 508
|
||||
" in r16, %1\n st z+, r16 \n" // sample 509
|
||||
" in r16, %1\n st z+, r16 \n" // sample 510
|
||||
" in r16, %1\n st z+, r16 \n" // sample 511
|
||||
" in r16, %1\n st z+, r16 \n" // sample 512
|
||||
" in r16, %1\n st z+, r16 \n" // sample 513
|
||||
" in r16, %1\n st z+, r16 \n" // sample 514
|
||||
" in r16, %1\n st z+, r16 \n" // sample 515
|
||||
" in r16, %1\n st z+, r16 \n" // sample 516
|
||||
" in r16, %1\n st z+, r16 \n" // sample 517
|
||||
" in r16, %1\n st z+, r16 \n" // sample 518
|
||||
" in r16, %1\n st z+, r16 \n" // sample 519
|
||||
" in r16, %1\n st z+, r16 \n" // sample 520
|
||||
" in r16, %1\n st z+, r16 \n" // sample 521
|
||||
" in r16, %1\n st z+, r16 \n" // sample 522
|
||||
" in r16, %1\n st z+, r16 \n" // sample 523
|
||||
" in r16, %1\n st z+, r16 \n" // sample 524
|
||||
" in r16, %1\n st z+, r16 \n" // sample 525
|
||||
" in r16, %1\n st z+, r16 \n" // sample 526
|
||||
" in r16, %1\n st z+, r16 \n" // sample 527
|
||||
" in r16, %1\n st z+, r16 \n" // sample 528
|
||||
" in r16, %1\n st z+, r16 \n" // sample 529
|
||||
" in r16, %1\n st z+, r16 \n" // sample 530
|
||||
" in r16, %1\n st z+, r16 \n" // sample 531
|
||||
" in r16, %1\n st z+, r16 \n" // sample 532
|
||||
" in r16, %1\n st z+, r16 \n" // sample 533
|
||||
" in r16, %1\n st z+, r16 \n" // sample 534
|
||||
" in r16, %1\n st z+, r16 \n" // sample 535
|
||||
" in r16, %1\n st z+, r16 \n" // sample 536
|
||||
" in r16, %1\n st z+, r16 \n" // sample 537
|
||||
" in r16, %1\n st z+, r16 \n" // sample 538
|
||||
" in r16, %1\n st z+, r16 \n" // sample 539
|
||||
" in r16, %1\n st z+, r16 \n" // sample 540
|
||||
" in r16, %1\n st z+, r16 \n" // sample 541
|
||||
" in r16, %1\n st z+, r16 \n" // sample 542
|
||||
" in r16, %1\n st z+, r16 \n" // sample 543
|
||||
" in r16, %1\n st z+, r16 \n" // sample 544
|
||||
" in r16, %1\n st z+, r16 \n" // sample 545
|
||||
" in r16, %1\n st z+, r16 \n" // sample 546
|
||||
" in r16, %1\n st z+, r16 \n" // sample 547
|
||||
" in r16, %1\n st z+, r16 \n" // sample 548
|
||||
" in r16, %1\n st z+, r16 \n" // sample 549
|
||||
" in r16, %1\n st z+, r16 \n" // sample 550
|
||||
" in r16, %1\n st z+, r16 \n" // sample 551
|
||||
" in r16, %1\n st z+, r16 \n" // sample 552
|
||||
" in r16, %1\n st z+, r16 \n" // sample 553
|
||||
" in r16, %1\n st z+, r16 \n" // sample 554
|
||||
" in r16, %1\n st z+, r16 \n" // sample 555
|
||||
" in r16, %1\n st z+, r16 \n" // sample 556
|
||||
" in r16, %1\n st z+, r16 \n" // sample 557
|
||||
" in r16, %1\n st z+, r16 \n" // sample 558
|
||||
" in r16, %1\n st z+, r16 \n" // sample 559
|
||||
" in r16, %1\n st z+, r16 \n" // sample 560
|
||||
" in r16, %1\n st z+, r16 \n" // sample 561
|
||||
" in r16, %1\n st z+, r16 \n" // sample 562
|
||||
" in r16, %1\n st z+, r16 \n" // sample 563
|
||||
" in r16, %1\n st z+, r16 \n" // sample 564
|
||||
" in r16, %1\n st z+, r16 \n" // sample 565
|
||||
" in r16, %1\n st z+, r16 \n" // sample 566
|
||||
" in r16, %1\n st z+, r16 \n" // sample 567
|
||||
" in r16, %1\n st z+, r16 \n" // sample 568
|
||||
" in r16, %1\n st z+, r16 \n" // sample 569
|
||||
" in r16, %1\n st z+, r16 \n" // sample 570
|
||||
" in r16, %1\n st z+, r16 \n" // sample 571
|
||||
" in r16, %1\n st z+, r16 \n" // sample 572
|
||||
" in r16, %1\n st z+, r16 \n" // sample 573
|
||||
" in r16, %1\n st z+, r16 \n" // sample 574
|
||||
" in r16, %1\n st z+, r16 \n" // sample 575
|
||||
" in r16, %1\n st z+, r16 \n" // sample 576
|
||||
" in r16, %1\n st z+, r16 \n" // sample 577
|
||||
" in r16, %1\n st z+, r16 \n" // sample 578
|
||||
" in r16, %1\n st z+, r16 \n" // sample 579
|
||||
" in r16, %1\n st z+, r16 \n" // sample 580
|
||||
" in r16, %1\n st z+, r16 \n" // sample 581
|
||||
" in r16, %1\n st z+, r16 \n" // sample 582
|
||||
" in r16, %1\n st z+, r16 \n" // sample 583
|
||||
" in r16, %1\n st z+, r16 \n" // sample 584
|
||||
" in r16, %1\n st z+, r16 \n" // sample 585
|
||||
" in r16, %1\n st z+, r16 \n" // sample 586
|
||||
" in r16, %1\n st z+, r16 \n" // sample 587
|
||||
" in r16, %1\n st z+, r16 \n" // sample 588
|
||||
" in r16, %1\n st z+, r16 \n" // sample 589
|
||||
" in r16, %1\n st z+, r16 \n" // sample 590
|
||||
" in r16, %1\n st z+, r16 \n" // sample 591
|
||||
" in r16, %1\n st z+, r16 \n" // sample 592
|
||||
" in r16, %1\n st z+, r16 \n" // sample 593
|
||||
" in r16, %1\n st z+, r16 \n" // sample 594
|
||||
" in r16, %1\n st z+, r16 \n" // sample 595
|
||||
" in r16, %1\n st z+, r16 \n" // sample 596
|
||||
" in r16, %1\n st z+, r16 \n" // sample 597
|
||||
" in r16, %1\n st z+, r16 \n" // sample 598
|
||||
" in r16, %1\n st z+, r16 \n" // sample 599
|
||||
" in r16, %1\n st z+, r16 \n" // sample 600
|
||||
" in r16, %1\n st z+, r16 \n" // sample 601
|
||||
" in r16, %1\n st z+, r16 \n" // sample 602
|
||||
" in r16, %1\n st z+, r16 \n" // sample 603
|
||||
" in r16, %1\n st z+, r16 \n" // sample 604
|
||||
" in r16, %1\n st z+, r16 \n" // sample 605
|
||||
" in r16, %1\n st z+, r16 \n" // sample 606
|
||||
" in r16, %1\n st z+, r16 \n" // sample 607
|
||||
" in r16, %1\n st z+, r16 \n" // sample 608
|
||||
" in r16, %1\n st z+, r16 \n" // sample 609
|
||||
" in r16, %1\n st z+, r16 \n" // sample 610
|
||||
" in r16, %1\n st z+, r16 \n" // sample 611
|
||||
" in r16, %1\n st z+, r16 \n" // sample 612
|
||||
" in r16, %1\n st z+, r16 \n" // sample 613
|
||||
" in r16, %1\n st z+, r16 \n" // sample 614
|
||||
" in r16, %1\n st z+, r16 \n" // sample 615
|
||||
" in r16, %1\n st z+, r16 \n" // sample 616
|
||||
" in r16, %1\n st z+, r16 \n" // sample 617
|
||||
" in r16, %1\n st z+, r16 \n" // sample 618
|
||||
" in r16, %1\n st z+, r16 \n" // sample 619
|
||||
" in r16, %1\n st z+, r16 \n" // sample 620
|
||||
" in r16, %1\n st z+, r16 \n" // sample 621
|
||||
" in r16, %1\n st z+, r16 \n" // sample 622
|
||||
" in r16, %1\n st z+, r16 \n" // sample 623
|
||||
" in r16, %1\n st z+, r16 \n" // sample 624
|
||||
" in r16, %1\n st z+, r16 \n" // sample 625
|
||||
" in r16, %1\n st z+, r16 \n" // sample 626
|
||||
" in r16, %1\n st z+, r16 \n" // sample 627
|
||||
" in r16, %1\n st z+, r16 \n" // sample 628
|
||||
" in r16, %1\n st z+, r16 \n" // sample 629
|
||||
" in r16, %1\n st z+, r16 \n" // sample 630
|
||||
" in r16, %1\n st z+, r16 \n" // sample 631
|
||||
" in r16, %1\n st z+, r16 \n" // sample 632
|
||||
" in r16, %1\n st z+, r16 \n" // sample 633
|
||||
" in r16, %1\n st z+, r16 \n" // sample 634
|
||||
" in r16, %1\n st z+, r16 \n" // sample 635
|
||||
" in r16, %1\n st z+, r16 \n" // sample 636
|
||||
" in r16, %1\n st z+, r16 \n" // sample 637
|
||||
" in r16, %1\n st z+, r16 \n" // sample 638
|
||||
" in r16, %1\n st z+, r16 \n" // sample 639
|
||||
" in r16, %1\n st z+, r16 \n" // sample 640
|
||||
364
usbconfig.h
Normal file
364
usbconfig.h
Normal file
@ -0,0 +1,364 @@
|
||||
/* Name: usbconfig.h
|
||||
* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
|
||||
* Author: Christian Starkjohann
|
||||
* Creation Date: 2005-04-01
|
||||
* Tabsize: 4
|
||||
* Copyright: (c) 2005 by OBJECTIVE DEVELOPMENT Software GmbH
|
||||
* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
|
||||
*/
|
||||
|
||||
#ifndef __usbconfig_h_included__
|
||||
#define __usbconfig_h_included__
|
||||
|
||||
/*
|
||||
General Description:
|
||||
This file is an example configuration (with inline documentation) for the USB
|
||||
driver. It configures V-USB for USB D+ connected to Port D bit 2 (which is
|
||||
also hardware interrupt 0 on many devices) and USB D- to Port D bit 4. You may
|
||||
wire the lines to any other port, as long as D+ is also wired to INT0 (or any
|
||||
other hardware interrupt, as long as it is the highest level interrupt, see
|
||||
section at the end of this file).
|
||||
+ To create your own usbconfig.h file, copy this file to your project's
|
||||
+ firmware source directory) and rename it to "usbconfig.h".
|
||||
+ Then edit it accordingly.
|
||||
*/
|
||||
|
||||
/* ---------------------------- Hardware Config ---------------------------- */
|
||||
|
||||
#define USB_CFG_IOPORTNAME D
|
||||
/* This is the port where the USB bus is connected. When you configure it to
|
||||
* "B", the registers PORTB, PINB and DDRB will be used.
|
||||
*/
|
||||
#define USB_CFG_DMINUS_BIT 0
|
||||
/* This is the bit number in USB_CFG_IOPORT where the USB D- line is connected.
|
||||
* This may be any bit in the port.
|
||||
*/
|
||||
#define USB_CFG_DPLUS_BIT 2
|
||||
/* This is the bit number in USB_CFG_IOPORT where the USB D+ line is connected.
|
||||
* This may be any bit in the port. Please note that D+ must also be connected
|
||||
* to interrupt pin INT0! [You can also use other interrupts, see section
|
||||
* "Optional MCU Description" below, or you can connect D- to the interrupt, as
|
||||
* it is required if you use the USB_COUNT_SOF feature. If you use D- for the
|
||||
* interrupt, the USB interrupt will also be triggered at Start-Of-Frame
|
||||
* markers every millisecond.]
|
||||
*/
|
||||
#define USB_CFG_CLOCK_KHZ (F_CPU/1000)
|
||||
/* Clock rate of the AVR in kHz. Legal values are 12000, 12800, 15000, 16000,
|
||||
* 16500, 18000 and 20000. The 12.8 MHz and 16.5 MHz versions of the code
|
||||
* require no crystal, they tolerate +/- 1% deviation from the nominal
|
||||
* frequency. All other rates require a precision of 2000 ppm and thus a
|
||||
* crystal!
|
||||
* Since F_CPU should be defined to your actual clock rate anyway, you should
|
||||
* not need to modify this setting.
|
||||
*/
|
||||
#define USB_CFG_CHECK_CRC 0
|
||||
/* Define this to 1 if you want that the driver checks integrity of incoming
|
||||
* data packets (CRC checks). CRC checks cost quite a bit of code size and are
|
||||
* currently only available for 18 MHz crystal clock. You must choose
|
||||
* USB_CFG_CLOCK_KHZ = 18000 if you enable this option.
|
||||
*/
|
||||
|
||||
/* ----------------------- Optional Hardware Config ------------------------ */
|
||||
|
||||
/* #define USB_CFG_PULLUP_IOPORTNAME D */
|
||||
/* If you connect the 1.5k pullup resistor from D- to a port pin instead of
|
||||
* V+, you can connect and disconnect the device from firmware by calling
|
||||
* the macros usbDeviceConnect() and usbDeviceDisconnect() (see usbdrv.h).
|
||||
* This constant defines the port on which the pullup resistor is connected.
|
||||
*/
|
||||
/* #define USB_CFG_PULLUP_BIT 4 */
|
||||
/* This constant defines the bit number in USB_CFG_PULLUP_IOPORT (defined
|
||||
* above) where the 1.5k pullup resistor is connected. See description
|
||||
* above for details.
|
||||
*/
|
||||
|
||||
/* --------------------------- Functional Range ---------------------------- */
|
||||
|
||||
#define USB_CFG_HAVE_INTRIN_ENDPOINT 1
|
||||
/* Define this to 1 if you want to compile a version with two endpoints: The
|
||||
* default control endpoint 0 and an interrupt-in endpoint (any other endpoint
|
||||
* number).
|
||||
*/
|
||||
#define USB_CFG_HAVE_INTRIN_ENDPOINT3 0
|
||||
/* Define this to 1 if you want to compile a version with three endpoints: The
|
||||
* default control endpoint 0, an interrupt-in endpoint 3 (or the number
|
||||
* configured below) and a catch-all default interrupt-in endpoint as above.
|
||||
* You must also define USB_CFG_HAVE_INTRIN_ENDPOINT to 1 for this feature.
|
||||
*/
|
||||
#define USB_CFG_EP3_NUMBER 3
|
||||
/* If the so-called endpoint 3 is used, it can now be configured to any other
|
||||
* endpoint number (except 0) with this macro. Default if undefined is 3.
|
||||
*/
|
||||
/* #define USB_INITIAL_DATATOKEN USBPID_DATA1 */
|
||||
/* The above macro defines the startup condition for data toggling on the
|
||||
* interrupt/bulk endpoints 1 and 3. Defaults to USBPID_DATA1.
|
||||
* Since the token is toggled BEFORE sending any data, the first packet is
|
||||
* sent with the oposite value of this configuration!
|
||||
*/
|
||||
#define USB_CFG_IMPLEMENT_HALT 0
|
||||
/* Define this to 1 if you also want to implement the ENDPOINT_HALT feature
|
||||
* for endpoint 1 (interrupt endpoint). Although you may not need this feature,
|
||||
* it is required by the standard. We have made it a config option because it
|
||||
* bloats the code considerably.
|
||||
*/
|
||||
#define USB_CFG_SUPPRESS_INTR_CODE 0
|
||||
/* Define this to 1 if you want to declare interrupt-in endpoints, but don't
|
||||
* want to send any data over them. If this macro is defined to 1, functions
|
||||
* usbSetInterrupt() and usbSetInterrupt3() are omitted. This is useful if
|
||||
* you need the interrupt-in endpoints in order to comply to an interface
|
||||
* (e.g. HID), but never want to send any data. This option saves a couple
|
||||
* of bytes in flash memory and the transmit buffers in RAM.
|
||||
*/
|
||||
#define USB_CFG_INTR_POLL_INTERVAL 10
|
||||
/* If you compile a version with endpoint 1 (interrupt-in), this is the poll
|
||||
* interval. The value is in milliseconds and must not be less than 10 ms for
|
||||
* low speed devices.
|
||||
*/
|
||||
#define USB_CFG_IS_SELF_POWERED 0
|
||||
/* Define this to 1 if the device has its own power supply. Set it to 0 if the
|
||||
* device is powered from the USB bus.
|
||||
*/
|
||||
#define USB_CFG_MAX_BUS_POWER 100
|
||||
/* Set this variable to the maximum USB bus power consumption of your device.
|
||||
* The value is in milliamperes. [It will be divided by two since USB
|
||||
* communicates power requirements in units of 2 mA.]
|
||||
*/
|
||||
#define USB_CFG_IMPLEMENT_FN_WRITE 0
|
||||
/* Set this to 1 if you want usbFunctionWrite() to be called for control-out
|
||||
* transfers. Set it to 0 if you don't need it and want to save a couple of
|
||||
* bytes.
|
||||
*/
|
||||
#define USB_CFG_IMPLEMENT_FN_READ 0
|
||||
/* Set this to 1 if you need to send control replies which are generated
|
||||
* "on the fly" when usbFunctionRead() is called. If you only want to send
|
||||
* data from a static buffer, set it to 0 and return the data from
|
||||
* usbFunctionSetup(). This saves a couple of bytes.
|
||||
*/
|
||||
#define USB_CFG_IMPLEMENT_FN_WRITEOUT 0
|
||||
/* Define this to 1 if you want to use interrupt-out (or bulk out) endpoints.
|
||||
* You must implement the function usbFunctionWriteOut() which receives all
|
||||
* interrupt/bulk data sent to any endpoint other than 0. The endpoint number
|
||||
* can be found in 'usbRxToken'.
|
||||
*/
|
||||
#define USB_CFG_HAVE_FLOWCONTROL 0
|
||||
/* Define this to 1 if you want flowcontrol over USB data. See the definition
|
||||
* of the macros usbDisableAllRequests() and usbEnableAllRequests() in
|
||||
* usbdrv.h.
|
||||
*/
|
||||
#define USB_CFG_DRIVER_FLASH_PAGE 0
|
||||
/* If the device has more than 64 kBytes of flash, define this to the 64 k page
|
||||
* where the driver's constants (descriptors) are located. Or in other words:
|
||||
* Define this to 1 for boot loaders on the ATMega128.
|
||||
*/
|
||||
#define USB_CFG_LONG_TRANSFERS 0
|
||||
/* Define this to 1 if you want to send/receive blocks of more than 254 bytes
|
||||
* in a single control-in or control-out transfer. Note that the capability
|
||||
* for long transfers increases the driver size.
|
||||
*/
|
||||
/* #define USB_RX_USER_HOOK(data, len) if(usbRxToken == (uchar)USBPID_SETUP) blinkLED(); */
|
||||
/* This macro is a hook if you want to do unconventional things. If it is
|
||||
* defined, it's inserted at the beginning of received message processing.
|
||||
* If you eat the received message and don't want default processing to
|
||||
* proceed, do a return after doing your things. One possible application
|
||||
* (besides debugging) is to flash a status LED on each packet.
|
||||
*/
|
||||
/* #define USB_RESET_HOOK(resetStarts) if(!resetStarts){hadUsbReset();} */
|
||||
/* This macro is a hook if you need to know when an USB RESET occurs. It has
|
||||
* one parameter which distinguishes between the start of RESET state and its
|
||||
* end.
|
||||
*/
|
||||
/* #define USB_SET_ADDRESS_HOOK() hadAddressAssigned(); */
|
||||
/* This macro (if defined) is executed when a USB SET_ADDRESS request was
|
||||
* received.
|
||||
*/
|
||||
#define USB_COUNT_SOF 0
|
||||
/* define this macro to 1 if you need the global variable "usbSofCount" which
|
||||
* counts SOF packets. This feature requires that the hardware interrupt is
|
||||
* connected to D- instead of D+.
|
||||
*/
|
||||
/* #ifdef __ASSEMBLER__
|
||||
* macro myAssemblerMacro
|
||||
* in YL, TCNT0
|
||||
* sts timer0Snapshot, YL
|
||||
* endm
|
||||
* #endif
|
||||
* #define USB_SOF_HOOK myAssemblerMacro
|
||||
* This macro (if defined) is executed in the assembler module when a
|
||||
* Start Of Frame condition is detected. It is recommended to define it to
|
||||
* the name of an assembler macro which is defined here as well so that more
|
||||
* than one assembler instruction can be used. The macro may use the register
|
||||
* YL and modify SREG. If it lasts longer than a couple of cycles, USB messages
|
||||
* immediately after an SOF pulse may be lost and must be retried by the host.
|
||||
* What can you do with this hook? Since the SOF signal occurs exactly every
|
||||
* 1 ms (unless the host is in sleep mode), you can use it to tune OSCCAL in
|
||||
* designs running on the internal RC oscillator.
|
||||
* Please note that Start Of Frame detection works only if D- is wired to the
|
||||
* interrupt, not D+. THIS IS DIFFERENT THAN MOST EXAMPLES!
|
||||
*/
|
||||
#define USB_CFG_CHECK_DATA_TOGGLING 0
|
||||
/* define this macro to 1 if you want to filter out duplicate data packets
|
||||
* sent by the host. Duplicates occur only as a consequence of communication
|
||||
* errors, when the host does not receive an ACK. Please note that you need to
|
||||
* implement the filtering yourself in usbFunctionWriteOut() and
|
||||
* usbFunctionWrite(). Use the global usbCurrentDataToken and a static variable
|
||||
* for each control- and out-endpoint to check for duplicate packets.
|
||||
*/
|
||||
#define USB_CFG_HAVE_MEASURE_FRAME_LENGTH 0
|
||||
/* define this macro to 1 if you want the function usbMeasureFrameLength()
|
||||
* compiled in. This function can be used to calibrate the AVR's RC oscillator.
|
||||
*/
|
||||
#define USB_USE_FAST_CRC 0
|
||||
/* The assembler module has two implementations for the CRC algorithm. One is
|
||||
* faster, the other is smaller. This CRC routine is only used for transmitted
|
||||
* messages where timing is not critical. The faster routine needs 31 cycles
|
||||
* per byte while the smaller one needs 61 to 69 cycles. The faster routine
|
||||
* may be worth the 32 bytes bigger code size if you transmit lots of data and
|
||||
* run the AVR close to its limit.
|
||||
*/
|
||||
|
||||
/* -------------------------- Device Description --------------------------- */
|
||||
|
||||
#define USB_CFG_VENDOR_ID 0x9b, 0x28 /* Dracal/raphnet */
|
||||
/* USB vendor ID for the device, low byte first. If you have registered your
|
||||
* own Vendor ID, define it here. Otherwise you may use one of obdev's free
|
||||
* shared VID/PID pairs. Be sure to read USB-IDs-for-free.txt for rules!
|
||||
*
|
||||
* *** IMPORTANT NOTE FROM RAPHNET ***
|
||||
*
|
||||
* This file use one of my Vendor ID/Product ID pairs. Please do not re-use
|
||||
* for your own projects if you plan to distribute your work. You may, however,
|
||||
* use it personally but beware of Windows' caching of report descriptors...
|
||||
*
|
||||
*/
|
||||
#define USB_CFG_DEVICE_ID 0x08, 0x00 /* Dremcast to USB */
|
||||
|
||||
#define USB_CFG_DEVICE_VERSION 0x00, 0x01
|
||||
/* Version number of the device: Minor number first, then major number.
|
||||
*/
|
||||
#define USB_CFG_VENDOR_NAME 'r', 'a', 'p', 'h', 'n', 'e', 't', '.', 'n', 'e', 't'
|
||||
#define USB_CFG_VENDOR_NAME_LEN 11
|
||||
#define USB_CFG_DEVICE_NAME 'D','r','e','a','m','c','a','s','t',' ','t','o',' ','U','S','B'
|
||||
#define USB_CFG_DEVICE_NAME_LEN 16
|
||||
/* Same as above for the serial number. If you don't want a serial number,
|
||||
* undefine the macros.
|
||||
* It may be useful to provide the serial number through other means than at
|
||||
* compile time. See the section about descriptor properties below for how
|
||||
* to fine tune control over USB descriptors such as the string descriptor
|
||||
* for the serial number.
|
||||
*/
|
||||
#define USB_CFG_DEVICE_CLASS 0 /* set to 0 if deferred to interface */
|
||||
#define USB_CFG_DEVICE_SUBCLASS 0
|
||||
/* See USB specification if you want to conform to an existing device class.
|
||||
* Class 0xff is "vendor specific".
|
||||
*/
|
||||
#define USB_CFG_INTERFACE_CLASS 3 /* HID */
|
||||
#define USB_CFG_INTERFACE_SUBCLASS 0
|
||||
#define USB_CFG_INTERFACE_PROTOCOL 0
|
||||
/* See USB specification if you want to conform to an existing device class or
|
||||
* protocol. The following classes must be set at interface level:
|
||||
* HID class is 3, no subclass and protocol required (but may be useful!)
|
||||
* CDC class is 2, use subclass 2 and protocol 1 for ACM
|
||||
*/
|
||||
#define USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH 0
|
||||
/* Define this to the length of the HID report descriptor, if you implement
|
||||
* an HID device. Otherwise don't define it or define it to 0.
|
||||
* If you use this define, you must add a PROGMEM character array named
|
||||
* "usbHidReportDescriptor" to your code which contains the report descriptor.
|
||||
* Don't forget to keep the array and this define in sync!
|
||||
*/
|
||||
|
||||
/* #define USB_PUBLIC static */
|
||||
/* Use the define above if you #include usbdrv.c instead of linking against it.
|
||||
* This technique saves a couple of bytes in flash memory.
|
||||
*/
|
||||
|
||||
/* ------------------- Fine Control over USB Descriptors ------------------- */
|
||||
/* If you don't want to use the driver's default USB descriptors, you can
|
||||
* provide our own. These can be provided as (1) fixed length static data in
|
||||
* flash memory, (2) fixed length static data in RAM or (3) dynamically at
|
||||
* runtime in the function usbFunctionDescriptor(). See usbdrv.h for more
|
||||
* information about this function.
|
||||
* Descriptor handling is configured through the descriptor's properties. If
|
||||
* no properties are defined or if they are 0, the default descriptor is used.
|
||||
* Possible properties are:
|
||||
* + USB_PROP_IS_DYNAMIC: The data for the descriptor should be fetched
|
||||
* at runtime via usbFunctionDescriptor(). If the usbMsgPtr mechanism is
|
||||
* used, the data is in FLASH by default. Add property USB_PROP_IS_RAM if
|
||||
* you want RAM pointers.
|
||||
* + USB_PROP_IS_RAM: The data returned by usbFunctionDescriptor() or found
|
||||
* in static memory is in RAM, not in flash memory.
|
||||
* + USB_PROP_LENGTH(len): If the data is in static memory (RAM or flash),
|
||||
* the driver must know the descriptor's length. The descriptor itself is
|
||||
* found at the address of a well known identifier (see below).
|
||||
* List of static descriptor names (must be declared PROGMEM if in flash):
|
||||
* char usbDescriptorDevice[];
|
||||
* char usbDescriptorConfiguration[];
|
||||
* char usbDescriptorHidReport[];
|
||||
* char usbDescriptorString0[];
|
||||
* int usbDescriptorStringVendor[];
|
||||
* int usbDescriptorStringDevice[];
|
||||
* int usbDescriptorStringSerialNumber[];
|
||||
* Other descriptors can't be provided statically, they must be provided
|
||||
* dynamically at runtime.
|
||||
*
|
||||
* Descriptor properties are or-ed or added together, e.g.:
|
||||
* #define USB_CFG_DESCR_PROPS_DEVICE (USB_PROP_IS_RAM | USB_PROP_LENGTH(18))
|
||||
*
|
||||
* The following descriptors are defined:
|
||||
* USB_CFG_DESCR_PROPS_DEVICE
|
||||
* USB_CFG_DESCR_PROPS_CONFIGURATION
|
||||
* USB_CFG_DESCR_PROPS_STRINGS
|
||||
* USB_CFG_DESCR_PROPS_STRING_0
|
||||
* USB_CFG_DESCR_PROPS_STRING_VENDOR
|
||||
* USB_CFG_DESCR_PROPS_STRING_PRODUCT
|
||||
* USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER
|
||||
* USB_CFG_DESCR_PROPS_HID
|
||||
* USB_CFG_DESCR_PROPS_HID_REPORT
|
||||
* USB_CFG_DESCR_PROPS_UNKNOWN (for all descriptors not handled by the driver)
|
||||
*
|
||||
* Note about string descriptors: String descriptors are not just strings, they
|
||||
* are Unicode strings prefixed with a 2 byte header. Example:
|
||||
* int serialNumberDescriptor[] = {
|
||||
* USB_STRING_DESCRIPTOR_HEADER(6),
|
||||
* 'S', 'e', 'r', 'i', 'a', 'l'
|
||||
* };
|
||||
*/
|
||||
|
||||
#define USB_CFG_DESCR_PROPS_DEVICE USB_PROP_IS_DYNAMIC
|
||||
#define USB_CFG_DESCR_PROPS_CONFIGURATION (USB_PROP_IS_DYNAMIC | USB_PROP_IS_RAM)
|
||||
#define USB_CFG_DESCR_PROPS_STRINGS 0
|
||||
#define USB_CFG_DESCR_PROPS_STRING_0 0
|
||||
#define USB_CFG_DESCR_PROPS_STRING_VENDOR 0
|
||||
#define USB_CFG_DESCR_PROPS_STRING_PRODUCT 0
|
||||
#define USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER USB_PROP_LENGTH((6*2))
|
||||
#define USB_CFG_DESCR_PROPS_HID 0
|
||||
#define USB_CFG_DESCR_PROPS_HID_REPORT USB_PROP_IS_DYNAMIC
|
||||
#define USB_CFG_DESCR_PROPS_UNKNOWN 0
|
||||
|
||||
|
||||
#define usbMsgPtr_t unsigned short
|
||||
/* If usbMsgPtr_t is not defined, it defaults to 'uchar *'. We define it to
|
||||
* a scalar type here because gcc generates slightly shorter code for scalar
|
||||
* arithmetics than for pointer arithmetics. Remove this define for backward
|
||||
* type compatibility or define it to an 8 bit type if you use data in RAM only
|
||||
* and all RAM is below 256 bytes (tiny memory model in IAR CC).
|
||||
*/
|
||||
|
||||
/* ----------------------- Optional MCU Description ------------------------ */
|
||||
|
||||
/* The following configurations have working defaults in usbdrv.h. You
|
||||
* usually don't need to set them explicitly. Only if you want to run
|
||||
* the driver on a device which is not yet supported or with a compiler
|
||||
* which is not fully supported (such as IAR C) or if you use a differnt
|
||||
* interrupt than INT0, you may have to define some of these.
|
||||
*/
|
||||
/* #define USB_INTR_CFG MCUCR */
|
||||
/* #define USB_INTR_CFG_SET ((1 << ISC00) | (1 << ISC01)) */
|
||||
/* #define USB_INTR_CFG_CLR 0 */
|
||||
/* #define USB_INTR_ENABLE GIMSK */
|
||||
/* #define USB_INTR_ENABLE_BIT INT0 */
|
||||
/* #define USB_INTR_PENDING GIFR */
|
||||
/* #define USB_INTR_PENDING_BIT INTF0 */
|
||||
/* #define USB_INTR_VECTOR INT0_vect */
|
||||
|
||||
#endif /* __usbconfig_h_included__ */
|
||||
329
usbdrv/Changelog.txt
Normal file
329
usbdrv/Changelog.txt
Normal file
@ -0,0 +1,329 @@
|
||||
This file documents changes in the firmware-only USB driver for atmel's AVR
|
||||
microcontrollers. New entries are always appended to the end of the file.
|
||||
Scroll down to the bottom to see the most recent changes.
|
||||
|
||||
2005-04-01:
|
||||
- Implemented endpoint 1 as interrupt-in endpoint.
|
||||
- Moved all configuration options to usbconfig.h which is not part of the
|
||||
driver.
|
||||
- Changed interface for usbVendorSetup().
|
||||
- Fixed compatibility with ATMega8 device.
|
||||
- Various minor optimizations.
|
||||
|
||||
2005-04-11:
|
||||
- Changed interface to application: Use usbFunctionSetup(), usbFunctionRead()
|
||||
and usbFunctionWrite() now. Added configuration options to choose which
|
||||
of these functions to compile in.
|
||||
- Assembler module delivers receive data non-inverted now.
|
||||
- Made register and bit names compatible with more AVR devices.
|
||||
|
||||
2005-05-03:
|
||||
- Allow address of usbRxBuf on any memory page as long as the buffer does
|
||||
not cross 256 byte page boundaries.
|
||||
- Better device compatibility: works with Mega88 now.
|
||||
- Code optimization in debugging module.
|
||||
- Documentation updates.
|
||||
|
||||
2006-01-02:
|
||||
- Added (free) default Vendor- and Product-IDs bought from voti.nl.
|
||||
- Added USBID-License.txt file which defines the rules for using the free
|
||||
shared VID/PID pair.
|
||||
- Added Readme.txt to the usbdrv directory which clarifies administrative
|
||||
issues.
|
||||
|
||||
2006-01-25:
|
||||
- Added "configured state" to become more standards compliant.
|
||||
- Added "HALT" state for interrupt endpoint.
|
||||
- Driver passes the "USB Command Verifier" test from usb.org now.
|
||||
- Made "serial number" a configuration option.
|
||||
- Minor optimizations, we now recommend compiler option "-Os" for best
|
||||
results.
|
||||
- Added a version number to usbdrv.h
|
||||
|
||||
2006-02-03:
|
||||
- New configuration variable USB_BUFFER_SECTION for the memory section where
|
||||
the USB rx buffer will go. This defaults to ".bss" if not defined. Since
|
||||
this buffer MUST NOT cross 256 byte pages (not even touch a page at the
|
||||
end), the user may want to pass a linker option similar to
|
||||
"-Wl,--section-start=.mybuffer=0x800060".
|
||||
- Provide structure for usbRequest_t.
|
||||
- New defines for USB constants.
|
||||
- Prepared for HID implementations.
|
||||
- Increased data size limit for interrupt transfers to 8 bytes.
|
||||
- New macro usbInterruptIsReady() to query interrupt buffer state.
|
||||
|
||||
2006-02-18:
|
||||
- Ensure that the data token which is sent as an ack to an OUT transfer is
|
||||
always zero sized. This fixes a bug where the host reports an error after
|
||||
sending an out transfer to the device, although all data arrived at the
|
||||
device.
|
||||
- Updated docs in usbdrv.h to reflect changed API in usbFunctionWrite().
|
||||
|
||||
* Release 2006-02-20
|
||||
|
||||
- Give a compiler warning when compiling with debugging turned on.
|
||||
- Added Oleg Semyonov's changes for IAR-cc compatibility.
|
||||
- Added new (optional) functions usbDeviceConnect() and usbDeviceDisconnect()
|
||||
(also thanks to Oleg!).
|
||||
- Rearranged tests in usbPoll() to save a couple of instructions in the most
|
||||
likely case that no actions are pending.
|
||||
- We need a delay between the SET ADDRESS request until the new address
|
||||
becomes active. This delay was handled in usbPoll() until now. Since the
|
||||
spec says that the delay must not exceed 2ms, previous versions required
|
||||
aggressive polling during the enumeration phase. We have now moved the
|
||||
handling of the delay into the interrupt routine.
|
||||
- We must not reply with NAK to a SETUP transaction. We can only achieve this
|
||||
by making sure that the rx buffer is empty when SETUP tokens are expected.
|
||||
We therefore don't pass zero sized data packets from the status phase of
|
||||
a transfer to usbPoll(). This change MAY cause troubles if you rely on
|
||||
receiving a less than 8 bytes long packet in usbFunctionWrite() to
|
||||
identify the end of a transfer. usbFunctionWrite() will NEVER be called
|
||||
with a zero length.
|
||||
|
||||
* Release 2006-03-14
|
||||
|
||||
- Improved IAR C support: tiny memory model, more devices
|
||||
- Added template usbconfig.h file under the name usbconfig-prototype.h
|
||||
|
||||
* Release 2006-03-26
|
||||
|
||||
- Added provision for one more interrupt-in endpoint (endpoint 3).
|
||||
- Added provision for one interrupt-out endpoint (endpoint 1).
|
||||
- Added flowcontrol macros for USB.
|
||||
- Added provision for custom configuration descriptor.
|
||||
- Allow ANY two port bits for D+ and D-.
|
||||
- Merged (optional) receive endpoint number into global usbRxToken variable.
|
||||
- Use USB_CFG_IOPORTNAME instead of USB_CFG_IOPORT. We now construct the
|
||||
variable name from the single port letter instead of computing the address
|
||||
of related ports from the output-port address.
|
||||
|
||||
* Release 2006-06-26
|
||||
|
||||
- Updated documentation in usbdrv.h and usbconfig-prototype.h to reflect the
|
||||
new features.
|
||||
- Removed "#warning" directives because IAR does not understand them. Use
|
||||
unused static variables instead to generate a warning.
|
||||
- Do not include <avr/io.h> when compiling with IAR.
|
||||
- Introduced USB_CFG_DESCR_PROPS_* in usbconfig.h to configure how each
|
||||
USB descriptor should be handled. It is now possible to provide descriptor
|
||||
data in Flash, RAM or dynamically at runtime.
|
||||
- STALL is now a status in usbTxLen* instead of a message. We can now conform
|
||||
to the spec and leave the stall status pending until it is cleared.
|
||||
- Made usbTxPacketCnt1 and usbTxPacketCnt3 public. This allows the
|
||||
application code to reset data toggling on interrupt pipes.
|
||||
|
||||
* Release 2006-07-18
|
||||
|
||||
- Added an #if !defined __ASSEMBLER__ to the warning in usbdrv.h. This fixes
|
||||
an assembler error.
|
||||
- usbDeviceDisconnect() takes pull-up resistor to high impedance now.
|
||||
|
||||
* Release 2007-02-01
|
||||
|
||||
- Merged in some code size improvements from usbtiny (thanks to Dick
|
||||
Streefland for these optimizations!)
|
||||
- Special alignment requirement for usbRxBuf not required any more. Thanks
|
||||
again to Dick Streefland for this hint!
|
||||
- Reverted to "#warning" instead of unused static variables -- new versions
|
||||
of IAR CC should handle this directive.
|
||||
- Changed Open Source license to GNU GPL v2 in order to make linking against
|
||||
other free libraries easier. We no longer require publication of the
|
||||
circuit diagrams, but we STRONGLY encourage it. If you improve the driver
|
||||
itself, PLEASE grant us a royalty free license to your changes for our
|
||||
commercial license.
|
||||
|
||||
* Release 2007-03-29
|
||||
|
||||
- New configuration option "USB_PUBLIC" in usbconfig.h.
|
||||
- Set USB version number to 1.10 instead of 1.01.
|
||||
- Code used USB_CFG_DESCR_PROPS_STRING_DEVICE and
|
||||
USB_CFG_DESCR_PROPS_STRING_PRODUCT inconsistently. Changed all occurrences
|
||||
to USB_CFG_DESCR_PROPS_STRING_PRODUCT.
|
||||
- New assembler module for 16.5 MHz RC oscillator clock with PLL in receiver
|
||||
code.
|
||||
- New assembler module for 16 MHz crystal.
|
||||
- usbdrvasm.S contains common code only, clock-specific parts have been moved
|
||||
to usbdrvasm12.S, usbdrvasm16.S and usbdrvasm165.S respectively.
|
||||
|
||||
* Release 2007-06-25
|
||||
|
||||
- 16 MHz module: Do SE0 check in stuffed bits as well.
|
||||
|
||||
* Release 2007-07-07
|
||||
|
||||
- Define hi8(x) for IAR compiler to limit result to 8 bits. This is necessary
|
||||
for negative values.
|
||||
- Added 15 MHz module contributed by V. Bosch.
|
||||
- Interrupt vector name can now be configured. This is useful if somebody
|
||||
wants to use a different hardware interrupt than INT0.
|
||||
|
||||
* Release 2007-08-07
|
||||
|
||||
- Moved handleIn3 routine in usbdrvasm16.S so that relative jump range is
|
||||
not exceeded.
|
||||
- More config options: USB_RX_USER_HOOK(), USB_INITIAL_DATATOKEN,
|
||||
USB_COUNT_SOF
|
||||
- USB_INTR_PENDING can now be a memory address, not just I/O
|
||||
|
||||
* Release 2007-09-19
|
||||
|
||||
- Split out common parts of assembler modules into separate include file
|
||||
- Made endpoint numbers configurable so that given interface definitions
|
||||
can be matched. See USB_CFG_EP3_NUMBER in usbconfig-prototype.h.
|
||||
- Store endpoint number for interrupt/bulk-out so that usbFunctionWriteOut()
|
||||
can handle any number of endpoints.
|
||||
- Define usbDeviceConnect() and usbDeviceDisconnect() even if no
|
||||
USB_CFG_PULLUP_IOPORTNAME is defined. Directly set D+ and D- to 0 in this
|
||||
case.
|
||||
|
||||
* Release 2007-12-01
|
||||
|
||||
- Optimize usbDeviceConnect() and usbDeviceDisconnect() for less code size
|
||||
when USB_CFG_PULLUP_IOPORTNAME is not defined.
|
||||
|
||||
* Release 2007-12-13
|
||||
|
||||
- Renamed all include-only assembler modules from *.S to *.inc so that
|
||||
people don't add them to their project sources.
|
||||
- Distribute leap bits in tx loop more evenly for 16 MHz module.
|
||||
- Use "macro" and "endm" instead of ".macro" and ".endm" for IAR
|
||||
- Avoid compiler warnings for constant expr range by casting some values in
|
||||
USB descriptors.
|
||||
|
||||
* Release 2008-01-21
|
||||
|
||||
- Fixed bug in 15 and 16 MHz module where the new address set with
|
||||
SET_ADDRESS was already accepted at the next NAK or ACK we send, not at
|
||||
the next data packet we send. This caused problems when the host polled
|
||||
too fast. Thanks to Alexander Neumann for his help and patience debugging
|
||||
this issue!
|
||||
|
||||
* Release 2008-02-05
|
||||
|
||||
- Fixed bug in 16.5 MHz module where a register was used in the interrupt
|
||||
handler before it was pushed. This bug was introduced with version
|
||||
2007-09-19 when common parts were moved to a separate file.
|
||||
- Optimized CRC routine (thanks to Reimar Doeffinger).
|
||||
|
||||
* Release 2008-02-16
|
||||
|
||||
- Removed outdated IAR compatibility stuff (code sections).
|
||||
- Added hook macros for USB_RESET_HOOK() and USB_SET_ADDRESS_HOOK().
|
||||
- Added optional routine usbMeasureFrameLength() for calibration of the
|
||||
internal RC oscillator.
|
||||
|
||||
* Release 2008-02-28
|
||||
|
||||
- USB_INITIAL_DATATOKEN defaults to USBPID_DATA1 now, which means that we
|
||||
start with sending USBPID_DATA0.
|
||||
- Changed defaults in usbconfig-prototype.h
|
||||
- Added free USB VID/PID pair for MIDI class devices
|
||||
- Restructured AVR-USB as separate package, not part of PowerSwitch any more.
|
||||
|
||||
* Release 2008-04-18
|
||||
|
||||
- Restructured usbdrv.c so that it is easier to read and understand.
|
||||
- Better code optimization with gcc 4.
|
||||
- If a second interrupt in endpoint is enabled, also add it to config
|
||||
descriptor.
|
||||
- Added config option for long transfers (above 254 bytes), see
|
||||
USB_CFG_LONG_TRANSFERS in usbconfig.h.
|
||||
- Added 20 MHz module contributed by Jeroen Benschop.
|
||||
|
||||
* Release 2008-05-13
|
||||
|
||||
- Fixed bug in libs-host/hiddata.c function usbhidGetReport(): length
|
||||
was not incremented, pointer to length was incremented instead.
|
||||
- Added code to command line tool(s) which claims an interface. This code
|
||||
is disabled by default, but may be necessary on newer Linux kernels.
|
||||
- Added usbconfig.h option "USB_CFG_CHECK_DATA_TOGGLING".
|
||||
- New header "usbportability.h" prepares ports to other development
|
||||
environments.
|
||||
- Long transfers (above 254 bytes) did not work when usbFunctionRead() was
|
||||
used to supply the data. Fixed this bug. [Thanks to Alexander Neumann!]
|
||||
- In hiddata.c (example code for sending/receiving data over HID), use
|
||||
USB_RECIP_DEVICE instead of USB_RECIP_INTERFACE for control transfers so
|
||||
that we need not claim the interface.
|
||||
- in usbPoll() loop 20 times polling for RESET state instead of 10 times.
|
||||
This accounts for the higher clock rates we now support.
|
||||
- Added a module for 12.8 MHz RC oscillator with PLL in receiver loop.
|
||||
- Added hook to SOF code so that oscillator can be tuned to USB frame clock.
|
||||
- Added timeout to waitForJ loop. Helps preventing unexpected hangs.
|
||||
- Added example code for oscillator tuning to libs-device (thanks to
|
||||
Henrik Haftmann for the idea to this routine).
|
||||
- Implemented option USB_CFG_SUPPRESS_INTR_CODE.
|
||||
|
||||
* Release 2008-10-22
|
||||
|
||||
- Fixed libs-device/osctune.h: OSCCAL is memory address on ATMega88 and
|
||||
similar, not offset of 0x20 needs to be added.
|
||||
- Allow distribution under GPLv3 for those who have to link against other
|
||||
code distributed under GPLv3.
|
||||
|
||||
* Release 2008-11-26
|
||||
|
||||
- Removed libusb-win32 dependency for hid-data example in Makefile.windows.
|
||||
It was never required and confused many people.
|
||||
- Added extern uchar usbRxToken to usbdrv.h.
|
||||
- Integrated a module with CRC checks at 18 MHz by Lukas Schrittwieser.
|
||||
|
||||
* Release 2009-03-23
|
||||
|
||||
- Hid-mouse example used settings from hid-data example, fixed that.
|
||||
- Renamed project to V-USB due to a trademark issue with Atmel(r).
|
||||
- Changed CommercialLicense.txt and USBID-License.txt to make the
|
||||
background of USB ID registration clearer.
|
||||
|
||||
* Release 2009-04-15
|
||||
|
||||
- Changed CommercialLicense.txt to reflect the new range of PIDs from
|
||||
Jason Kotzin.
|
||||
- Removed USBID-License.txt in favor of USB-IDs-for-free.txt and
|
||||
USB-ID-FAQ.txt
|
||||
- Fixed a bug in the 12.8 MHz module: End Of Packet decection was made in
|
||||
the center between bit 0 and 1 of each byte. This is where the data lines
|
||||
are expected to change and the sampled data may therefore be nonsense.
|
||||
We therefore check EOP ONLY if bits 0 AND 1 have both been read as 0 on D-.
|
||||
- Fixed a bitstuffing problem in the 16 MHz module: If bit 6 was stuffed,
|
||||
the unstuffing code in the receiver routine was 1 cycle too long. If
|
||||
multiple bytes had the unstuffing in bit 6, the error summed up until the
|
||||
receiver was out of sync.
|
||||
- Included option for faster CRC routine.
|
||||
Thanks to Slawomir Fras (BoskiDialer) for this code!
|
||||
- Updated bits in Configuration Descriptor's bmAttributes according to
|
||||
USB 1.1 (in particular bit 7, it is a must-be-set bit now).
|
||||
|
||||
* Release 2009-08-22
|
||||
|
||||
- Moved first DBG1() after odDebugInit() in all examples.
|
||||
- Use vector INT0_vect instead of SIG_INTERRUPT0 if defined. This makes
|
||||
V-USB compatible with the new "p" suffix devices (e.g. ATMega328p).
|
||||
- USB_CFG_CLOCK_KHZ setting is now required in usbconfig.h (no default any
|
||||
more).
|
||||
- New option USB_CFG_DRIVER_FLASH_PAGE allows boot loaders on devices with
|
||||
more than 64 kB flash.
|
||||
- Built-in configuration descriptor allows custom definition for second
|
||||
endpoint now.
|
||||
|
||||
* Release 2010-07-15
|
||||
|
||||
- Fixed bug in usbDriverSetup() which prevented descriptor sizes above 255
|
||||
bytes.
|
||||
- Avoid a compiler warning for unused parameter in usbHandleResetHook() when
|
||||
compiler option -Wextra is enabled.
|
||||
- Fixed wrong hex value for some IDs in USB-IDs-for-free.txt.
|
||||
- Keep a define for USBATTR_BUSPOWER, although the flag does not exist
|
||||
in USB 1.1 any more. Set it to 0. This is for backward compatibility.
|
||||
|
||||
* Release 2012-01-09
|
||||
|
||||
- Define a separate (defined) type for usbMsgPtr so that projects using a
|
||||
tiny memory model can define it to an 8 bit type in usbconfig.h. This
|
||||
change also saves a couple of bytes when using a scalar 16 bit type.
|
||||
- Inserted "const" keyword for all PROGMEM declarations because new GCC
|
||||
requires it.
|
||||
- Fixed problem with dependence of usbportability.h on usbconfig.h. This
|
||||
problem occurred with IAR CC only.
|
||||
- Prepared repository for github.com.
|
||||
|
||||
* Release 2012-12-06
|
||||
166
usbdrv/CommercialLicense.txt
Normal file
166
usbdrv/CommercialLicense.txt
Normal file
@ -0,0 +1,166 @@
|
||||
V-USB Driver Software License Agreement
|
||||
Version 2012-07-09
|
||||
|
||||
THIS LICENSE AGREEMENT GRANTS YOU CERTAIN RIGHTS IN A SOFTWARE. YOU CAN
|
||||
ENTER INTO THIS AGREEMENT AND ACQUIRE THE RIGHTS OUTLINED BELOW BY PAYING
|
||||
THE AMOUNT ACCORDING TO SECTION 4 ("PAYMENT") TO OBJECTIVE DEVELOPMENT.
|
||||
|
||||
|
||||
1 DEFINITIONS
|
||||
|
||||
1.1 "OBJECTIVE DEVELOPMENT" shall mean OBJECTIVE DEVELOPMENT Software GmbH,
|
||||
Grosse Schiffgasse 1A/7, 1020 Wien, AUSTRIA.
|
||||
|
||||
1.2 "You" shall mean the Licensee.
|
||||
|
||||
1.3 "V-USB" shall mean all files included in the package distributed under
|
||||
the name "vusb" by OBJECTIVE DEVELOPMENT (http://www.obdev.at/vusb/)
|
||||
unless otherwise noted. This includes the firmware-only USB device
|
||||
implementation for Atmel AVR microcontrollers, some simple device examples
|
||||
and host side software examples and libraries.
|
||||
|
||||
|
||||
2 LICENSE GRANTS
|
||||
|
||||
2.1 Source Code. OBJECTIVE DEVELOPMENT shall furnish you with the source
|
||||
code of V-USB.
|
||||
|
||||
2.2 Distribution and Use. OBJECTIVE DEVELOPMENT grants you the
|
||||
non-exclusive right to use, copy and distribute V-USB with your hardware
|
||||
product(s), restricted by the limitations in section 3 below.
|
||||
|
||||
2.3 Modifications. OBJECTIVE DEVELOPMENT grants you the right to modify
|
||||
the source code and your copy of V-USB according to your needs.
|
||||
|
||||
2.4 USB IDs. OBJECTIVE DEVELOPMENT furnishes you with one or two USB
|
||||
Product ID(s), sent to you in e-mail. These Product IDs are reserved
|
||||
exclusively for you. OBJECTIVE DEVELOPMENT has obtained USB Product ID
|
||||
ranges under the Vendor ID 5824 from Wouter van Ooijen (Van Ooijen
|
||||
Technische Informatica, www.voti.nl) and under the Vendor ID 8352 from
|
||||
Jason Kotzin (now flirc.tv, Inc.). Both owners of the Vendor IDs have
|
||||
obtained these IDs from the USB Implementers Forum, Inc. (www.usb.org).
|
||||
OBJECTIVE DEVELOPMENT disclaims all liability which might arise from the
|
||||
assignment of USB IDs.
|
||||
|
||||
2.5 USB Certification. Although not part of this agreement, we want to make
|
||||
it clear that you cannot become USB certified when you use V-USB or a USB
|
||||
Product ID assigned by OBJECTIVE DEVELOPMENT. AVR microcontrollers don't
|
||||
meet the electrical specifications required by the USB specification and
|
||||
the USB Implementers Forum certifies only members who bought a Vendor ID of
|
||||
their own.
|
||||
|
||||
|
||||
3 LICENSE RESTRICTIONS
|
||||
|
||||
3.1 Number of Units. Only one of the following three definitions is
|
||||
applicable. Which one is determined by the amount you pay to OBJECTIVE
|
||||
DEVELOPMENT, see section 4 ("Payment") below.
|
||||
|
||||
Hobby License: You may use V-USB according to section 2 above in no more
|
||||
than 5 hardware units. These units must not be sold for profit.
|
||||
|
||||
Entry Level License: You may use V-USB according to section 2 above in no
|
||||
more than 150 hardware units.
|
||||
|
||||
Professional License: You may use V-USB according to section 2 above in
|
||||
any number of hardware units, except for large scale production ("unlimited
|
||||
fair use"). Quantities below 10,000 units are not considered large scale
|
||||
production. If your reach quantities which are obviously large scale
|
||||
production, you must pay a license fee of 0.10 EUR per unit for all units
|
||||
above 10,000.
|
||||
|
||||
3.2 Rental. You may not rent, lease, or lend V-USB or otherwise encumber
|
||||
any copy of V-USB, or any of the rights granted herein.
|
||||
|
||||
3.3 Transfer. You may not transfer your rights under this Agreement to
|
||||
another party without OBJECTIVE DEVELOPMENT's prior written consent. If
|
||||
such consent is obtained, you may permanently transfer this License to
|
||||
another party. The recipient of such transfer must agree to all terms and
|
||||
conditions of this Agreement.
|
||||
|
||||
3.4 Reservation of Rights. OBJECTIVE DEVELOPMENT retains all rights not
|
||||
expressly granted.
|
||||
|
||||
3.5 Non-Exclusive Rights. Your license rights under this Agreement are
|
||||
non-exclusive.
|
||||
|
||||
3.6 Third Party Rights. This Agreement cannot grant you rights controlled
|
||||
by third parties. In particular, you are not allowed to use the USB logo or
|
||||
other trademarks owned by the USB Implementers Forum, Inc. without their
|
||||
consent. Since such consent depends on USB certification, it should be
|
||||
noted that V-USB will not pass certification because it does not
|
||||
implement checksum verification and the microcontroller ports do not meet
|
||||
the electrical specifications.
|
||||
|
||||
|
||||
4 PAYMENT
|
||||
|
||||
The payment amount depends on the variation of this agreement (according to
|
||||
section 3.1) into which you want to enter. Concrete prices are listed on
|
||||
OBJECTIVE DEVELOPMENT's web site, usually at
|
||||
http://www.obdev.at/vusb/license.html. You agree to pay the amount listed
|
||||
there to OBJECTIVE DEVELOPMENT or OBJECTIVE DEVELOPMENT's payment processor
|
||||
or reseller.
|
||||
|
||||
|
||||
5 COPYRIGHT AND OWNERSHIP
|
||||
|
||||
V-USB is protected by copyright laws and international copyright
|
||||
treaties, as well as other intellectual property laws and treaties. V-USB
|
||||
is licensed, not sold.
|
||||
|
||||
|
||||
6 TERM AND TERMINATION
|
||||
|
||||
6.1 Term. This Agreement shall continue indefinitely. However, OBJECTIVE
|
||||
DEVELOPMENT may terminate this Agreement and revoke the granted license and
|
||||
USB-IDs if you fail to comply with any of its terms and conditions.
|
||||
|
||||
6.2 Survival of Terms. All provisions regarding secrecy, confidentiality
|
||||
and limitation of liability shall survive termination of this agreement.
|
||||
|
||||
|
||||
7 DISCLAIMER OF WARRANTY AND LIABILITY
|
||||
|
||||
LIMITED WARRANTY. V-USB IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
|
||||
KIND. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, OBJECTIVE
|
||||
DEVELOPMENT AND ITS SUPPLIERS HEREBY DISCLAIM ALL WARRANTIES, EITHER
|
||||
EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||||
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND
|
||||
NON-INFRINGEMENT, WITH REGARD TO V-USB, AND THE PROVISION OF OR FAILURE
|
||||
TO PROVIDE SUPPORT SERVICES. THIS LIMITED WARRANTY GIVES YOU SPECIFIC LEGAL
|
||||
RIGHTS. YOU MAY HAVE OTHERS, WHICH VARY FROM STATE/JURISDICTION TO
|
||||
STATE/JURISDICTION.
|
||||
|
||||
LIMITATION OF LIABILITY. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW,
|
||||
IN NO EVENT SHALL OBJECTIVE DEVELOPMENT OR ITS SUPPLIERS BE LIABLE FOR ANY
|
||||
SPECIAL, INCIDENTAL, INDIRECT, OR CONSEQUENTIAL DAMAGES WHATSOEVER
|
||||
(INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF BUSINESS PROFITS,
|
||||
BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, OR ANY OTHER PECUNIARY
|
||||
LOSS) ARISING OUT OF THE USE OF OR INABILITY TO USE V-USB OR THE
|
||||
PROVISION OF OR FAILURE TO PROVIDE SUPPORT SERVICES, EVEN IF OBJECTIVE
|
||||
DEVELOPMENT HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. IN ANY
|
||||
CASE, OBJECTIVE DEVELOPMENT'S ENTIRE LIABILITY UNDER ANY PROVISION OF THIS
|
||||
AGREEMENT SHALL BE LIMITED TO THE AMOUNT ACTUALLY PAID BY YOU FOR V-USB.
|
||||
|
||||
|
||||
8 MISCELLANEOUS TERMS
|
||||
|
||||
8.1 Marketing. OBJECTIVE DEVELOPMENT has the right to mention for marketing
|
||||
purposes that you entered into this agreement.
|
||||
|
||||
8.2 Entire Agreement. This document represents the entire agreement between
|
||||
OBJECTIVE DEVELOPMENT and you. It may only be modified in writing signed by
|
||||
an authorized representative of both, OBJECTIVE DEVELOPMENT and you.
|
||||
|
||||
8.3 Severability. In case a provision of these terms and conditions should
|
||||
be or become partly or entirely invalid, ineffective, or not executable,
|
||||
the validity of all other provisions shall not be affected.
|
||||
|
||||
8.4 Applicable Law. This agreement is governed by the laws of the Republic
|
||||
of Austria.
|
||||
|
||||
8.5 Responsible Courts. The responsible courts in Vienna/Austria will have
|
||||
exclusive jurisdiction regarding all disputes in connection with this
|
||||
agreement.
|
||||
|
||||
361
usbdrv/License.txt
Normal file
361
usbdrv/License.txt
Normal file
@ -0,0 +1,361 @@
|
||||
OBJECTIVE DEVELOPMENT GmbH's V-USB driver software is distributed under the
|
||||
terms and conditions of the GNU GPL version 2 or the GNU GPL version 3. It is
|
||||
your choice whether you apply the terms of version 2 or version 3. The full
|
||||
text of GPLv2 is included below. In addition to the requirements in the GPL,
|
||||
we STRONGLY ENCOURAGE you to do the following:
|
||||
|
||||
(1) Publish your entire project on a web site and drop us a note with the URL.
|
||||
Use the form at http://www.obdev.at/vusb/feedback.html for your submission.
|
||||
|
||||
(2) Adhere to minimum publication standards. Please include AT LEAST:
|
||||
- a circuit diagram in PDF, PNG or GIF format
|
||||
- full source code for the host software
|
||||
- a Readme.txt file in ASCII format which describes the purpose of the
|
||||
project and what can be found in which directories and which files
|
||||
- a reference to http://www.obdev.at/vusb/
|
||||
|
||||
(3) If you improve the driver firmware itself, please give us a free license
|
||||
to your modifications for our commercial license offerings.
|
||||
|
||||
|
||||
|
||||
GNU GENERAL PUBLIC LICENSE
|
||||
Version 2, June 1991
|
||||
|
||||
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
|
||||
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
Everyone is permitted to copy and distribute verbatim copies
|
||||
of this license document, but changing it is not allowed.
|
||||
|
||||
Preamble
|
||||
|
||||
The licenses for most software are designed to take away your
|
||||
freedom to share and change it. By contrast, the GNU General Public
|
||||
License is intended to guarantee your freedom to share and change free
|
||||
software--to make sure the software is free for all its users. This
|
||||
General Public License applies to most of the Free Software
|
||||
Foundation's software and to any other program whose authors commit to
|
||||
using it. (Some other Free Software Foundation software is covered by
|
||||
the GNU Library General Public License instead.) You can apply it to
|
||||
your programs, too.
|
||||
|
||||
When we speak of free software, we are referring to freedom, not
|
||||
price. Our General Public Licenses are designed to make sure that you
|
||||
have the freedom to distribute copies of free software (and charge for
|
||||
this service if you wish), that you receive source code or can get it
|
||||
if you want it, that you can change the software or use pieces of it
|
||||
in new free programs; and that you know you can do these things.
|
||||
|
||||
To protect your rights, we need to make restrictions that forbid
|
||||
anyone to deny you these rights or to ask you to surrender the rights.
|
||||
These restrictions translate to certain responsibilities for you if you
|
||||
distribute copies of the software, or if you modify it.
|
||||
|
||||
For example, if you distribute copies of such a program, whether
|
||||
gratis or for a fee, you must give the recipients all the rights that
|
||||
you have. You must make sure that they, too, receive or can get the
|
||||
source code. And you must show them these terms so they know their
|
||||
rights.
|
||||
|
||||
We protect your rights with two steps: (1) copyright the software, and
|
||||
(2) offer you this license which gives you legal permission to copy,
|
||||
distribute and/or modify the software.
|
||||
|
||||
Also, for each author's protection and ours, we want to make certain
|
||||
that everyone understands that there is no warranty for this free
|
||||
software. If the software is modified by someone else and passed on, we
|
||||
want its recipients to know that what they have is not the original, so
|
||||
that any problems introduced by others will not reflect on the original
|
||||
authors' reputations.
|
||||
|
||||
Finally, any free program is threatened constantly by software
|
||||
patents. We wish to avoid the danger that redistributors of a free
|
||||
program will individually obtain patent licenses, in effect making the
|
||||
program proprietary. To prevent this, we have made it clear that any
|
||||
patent must be licensed for everyone's free use or not licensed at all.
|
||||
|
||||
The precise terms and conditions for copying, distribution and
|
||||
modification follow.
|
||||
|
||||
GNU GENERAL PUBLIC LICENSE
|
||||
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
|
||||
|
||||
0. This License applies to any program or other work which contains
|
||||
a notice placed by the copyright holder saying it may be distributed
|
||||
under the terms of this General Public License. The "Program", below,
|
||||
refers to any such program or work, and a "work based on the Program"
|
||||
means either the Program or any derivative work under copyright law:
|
||||
that is to say, a work containing the Program or a portion of it,
|
||||
either verbatim or with modifications and/or translated into another
|
||||
language. (Hereinafter, translation is included without limitation in
|
||||
the term "modification".) Each licensee is addressed as "you".
|
||||
|
||||
Activities other than copying, distribution and modification are not
|
||||
covered by this License; they are outside its scope. The act of
|
||||
running the Program is not restricted, and the output from the Program
|
||||
is covered only if its contents constitute a work based on the
|
||||
Program (independent of having been made by running the Program).
|
||||
Whether that is true depends on what the Program does.
|
||||
|
||||
1. You may copy and distribute verbatim copies of the Program's
|
||||
source code as you receive it, in any medium, provided that you
|
||||
conspicuously and appropriately publish on each copy an appropriate
|
||||
copyright notice and disclaimer of warranty; keep intact all the
|
||||
notices that refer to this License and to the absence of any warranty;
|
||||
and give any other recipients of the Program a copy of this License
|
||||
along with the Program.
|
||||
|
||||
You may charge a fee for the physical act of transferring a copy, and
|
||||
you may at your option offer warranty protection in exchange for a fee.
|
||||
|
||||
2. You may modify your copy or copies of the Program or any portion
|
||||
of it, thus forming a work based on the Program, and copy and
|
||||
distribute such modifications or work under the terms of Section 1
|
||||
above, provided that you also meet all of these conditions:
|
||||
|
||||
a) You must cause the modified files to carry prominent notices
|
||||
stating that you changed the files and the date of any change.
|
||||
|
||||
b) You must cause any work that you distribute or publish, that in
|
||||
whole or in part contains or is derived from the Program or any
|
||||
part thereof, to be licensed as a whole at no charge to all third
|
||||
parties under the terms of this License.
|
||||
|
||||
c) If the modified program normally reads commands interactively
|
||||
when run, you must cause it, when started running for such
|
||||
interactive use in the most ordinary way, to print or display an
|
||||
announcement including an appropriate copyright notice and a
|
||||
notice that there is no warranty (or else, saying that you provide
|
||||
a warranty) and that users may redistribute the program under
|
||||
these conditions, and telling the user how to view a copy of this
|
||||
License. (Exception: if the Program itself is interactive but
|
||||
does not normally print such an announcement, your work based on
|
||||
the Program is not required to print an announcement.)
|
||||
|
||||
These requirements apply to the modified work as a whole. If
|
||||
identifiable sections of that work are not derived from the Program,
|
||||
and can be reasonably considered independent and separate works in
|
||||
themselves, then this License, and its terms, do not apply to those
|
||||
sections when you distribute them as separate works. But when you
|
||||
distribute the same sections as part of a whole which is a work based
|
||||
on the Program, the distribution of the whole must be on the terms of
|
||||
this License, whose permissions for other licensees extend to the
|
||||
entire whole, and thus to each and every part regardless of who wrote it.
|
||||
|
||||
Thus, it is not the intent of this section to claim rights or contest
|
||||
your rights to work written entirely by you; rather, the intent is to
|
||||
exercise the right to control the distribution of derivative or
|
||||
collective works based on the Program.
|
||||
|
||||
In addition, mere aggregation of another work not based on the Program
|
||||
with the Program (or with a work based on the Program) on a volume of
|
||||
a storage or distribution medium does not bring the other work under
|
||||
the scope of this License.
|
||||
|
||||
3. You may copy and distribute the Program (or a work based on it,
|
||||
under Section 2) in object code or executable form under the terms of
|
||||
Sections 1 and 2 above provided that you also do one of the following:
|
||||
|
||||
a) Accompany it with the complete corresponding machine-readable
|
||||
source code, which must be distributed under the terms of Sections
|
||||
1 and 2 above on a medium customarily used for software interchange; or,
|
||||
|
||||
b) Accompany it with a written offer, valid for at least three
|
||||
years, to give any third party, for a charge no more than your
|
||||
cost of physically performing source distribution, a complete
|
||||
machine-readable copy of the corresponding source code, to be
|
||||
distributed under the terms of Sections 1 and 2 above on a medium
|
||||
customarily used for software interchange; or,
|
||||
|
||||
c) Accompany it with the information you received as to the offer
|
||||
to distribute corresponding source code. (This alternative is
|
||||
allowed only for noncommercial distribution and only if you
|
||||
received the program in object code or executable form with such
|
||||
an offer, in accord with Subsection b above.)
|
||||
|
||||
The source code for a work means the preferred form of the work for
|
||||
making modifications to it. For an executable work, complete source
|
||||
code means all the source code for all modules it contains, plus any
|
||||
associated interface definition files, plus the scripts used to
|
||||
control compilation and installation of the executable. However, as a
|
||||
special exception, the source code distributed need not include
|
||||
anything that is normally distributed (in either source or binary
|
||||
form) with the major components (compiler, kernel, and so on) of the
|
||||
operating system on which the executable runs, unless that component
|
||||
itself accompanies the executable.
|
||||
|
||||
If distribution of executable or object code is made by offering
|
||||
access to copy from a designated place, then offering equivalent
|
||||
access to copy the source code from the same place counts as
|
||||
distribution of the source code, even though third parties are not
|
||||
compelled to copy the source along with the object code.
|
||||
|
||||
4. You may not copy, modify, sublicense, or distribute the Program
|
||||
except as expressly provided under this License. Any attempt
|
||||
otherwise to copy, modify, sublicense or distribute the Program is
|
||||
void, and will automatically terminate your rights under this License.
|
||||
However, parties who have received copies, or rights, from you under
|
||||
this License will not have their licenses terminated so long as such
|
||||
parties remain in full compliance.
|
||||
|
||||
5. You are not required to accept this License, since you have not
|
||||
signed it. However, nothing else grants you permission to modify or
|
||||
distribute the Program or its derivative works. These actions are
|
||||
prohibited by law if you do not accept this License. Therefore, by
|
||||
modifying or distributing the Program (or any work based on the
|
||||
Program), you indicate your acceptance of this License to do so, and
|
||||
all its terms and conditions for copying, distributing or modifying
|
||||
the Program or works based on it.
|
||||
|
||||
6. Each time you redistribute the Program (or any work based on the
|
||||
Program), the recipient automatically receives a license from the
|
||||
original licensor to copy, distribute or modify the Program subject to
|
||||
these terms and conditions. You may not impose any further
|
||||
restrictions on the recipients' exercise of the rights granted herein.
|
||||
You are not responsible for enforcing compliance by third parties to
|
||||
this License.
|
||||
|
||||
7. If, as a consequence of a court judgment or allegation of patent
|
||||
infringement or for any other reason (not limited to patent issues),
|
||||
conditions are imposed on you (whether by court order, agreement or
|
||||
otherwise) that contradict the conditions of this License, they do not
|
||||
excuse you from the conditions of this License. If you cannot
|
||||
distribute so as to satisfy simultaneously your obligations under this
|
||||
License and any other pertinent obligations, then as a consequence you
|
||||
may not distribute the Program at all. For example, if a patent
|
||||
license would not permit royalty-free redistribution of the Program by
|
||||
all those who receive copies directly or indirectly through you, then
|
||||
the only way you could satisfy both it and this License would be to
|
||||
refrain entirely from distribution of the Program.
|
||||
|
||||
If any portion of this section is held invalid or unenforceable under
|
||||
any particular circumstance, the balance of the section is intended to
|
||||
apply and the section as a whole is intended to apply in other
|
||||
circumstances.
|
||||
|
||||
It is not the purpose of this section to induce you to infringe any
|
||||
patents or other property right claims or to contest validity of any
|
||||
such claims; this section has the sole purpose of protecting the
|
||||
integrity of the free software distribution system, which is
|
||||
implemented by public license practices. Many people have made
|
||||
generous contributions to the wide range of software distributed
|
||||
through that system in reliance on consistent application of that
|
||||
system; it is up to the author/donor to decide if he or she is willing
|
||||
to distribute software through any other system and a licensee cannot
|
||||
impose that choice.
|
||||
|
||||
This section is intended to make thoroughly clear what is believed to
|
||||
be a consequence of the rest of this License.
|
||||
|
||||
8. If the distribution and/or use of the Program is restricted in
|
||||
certain countries either by patents or by copyrighted interfaces, the
|
||||
original copyright holder who places the Program under this License
|
||||
may add an explicit geographical distribution limitation excluding
|
||||
those countries, so that distribution is permitted only in or among
|
||||
countries not thus excluded. In such case, this License incorporates
|
||||
the limitation as if written in the body of this License.
|
||||
|
||||
9. The Free Software Foundation may publish revised and/or new versions
|
||||
of the General Public License from time to time. Such new versions will
|
||||
be similar in spirit to the present version, but may differ in detail to
|
||||
address new problems or concerns.
|
||||
|
||||
Each version is given a distinguishing version number. If the Program
|
||||
specifies a version number of this License which applies to it and "any
|
||||
later version", you have the option of following the terms and conditions
|
||||
either of that version or of any later version published by the Free
|
||||
Software Foundation. If the Program does not specify a version number of
|
||||
this License, you may choose any version ever published by the Free Software
|
||||
Foundation.
|
||||
|
||||
10. If you wish to incorporate parts of the Program into other free
|
||||
programs whose distribution conditions are different, write to the author
|
||||
to ask for permission. For software which is copyrighted by the Free
|
||||
Software Foundation, write to the Free Software Foundation; we sometimes
|
||||
make exceptions for this. Our decision will be guided by the two goals
|
||||
of preserving the free status of all derivatives of our free software and
|
||||
of promoting the sharing and reuse of software generally.
|
||||
|
||||
NO WARRANTY
|
||||
|
||||
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
|
||||
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
|
||||
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
|
||||
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
|
||||
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||||
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
|
||||
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
|
||||
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
|
||||
REPAIR OR CORRECTION.
|
||||
|
||||
12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
|
||||
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
|
||||
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
|
||||
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
|
||||
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
|
||||
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
|
||||
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
|
||||
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
|
||||
POSSIBILITY OF SUCH DAMAGES.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
How to Apply These Terms to Your New Programs
|
||||
|
||||
If you develop a new program, and you want it to be of the greatest
|
||||
possible use to the public, the best way to achieve this is to make it
|
||||
free software which everyone can redistribute and change under these terms.
|
||||
|
||||
To do so, attach the following notices to the program. It is safest
|
||||
to attach them to the start of each source file to most effectively
|
||||
convey the exclusion of warranty; and each file should have at least
|
||||
the "copyright" line and a pointer to where the full notice is found.
|
||||
|
||||
<one line to give the program's name and a brief idea of what it does.>
|
||||
Copyright (C) <year> <name of author>
|
||||
|
||||
This program is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program; if not, write to the Free Software
|
||||
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
|
||||
|
||||
Also add information on how to contact you by electronic and paper mail.
|
||||
|
||||
If the program is interactive, make it output a short notice like this
|
||||
when it starts in an interactive mode:
|
||||
|
||||
Gnomovision version 69, Copyright (C) year name of author
|
||||
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
|
||||
This is free software, and you are welcome to redistribute it
|
||||
under certain conditions; type `show c' for details.
|
||||
|
||||
The hypothetical commands `show w' and `show c' should show the appropriate
|
||||
parts of the General Public License. Of course, the commands you use may
|
||||
be called something other than `show w' and `show c'; they could even be
|
||||
mouse-clicks or menu items--whatever suits your program.
|
||||
|
||||
You should also get your employer (if you work as a programmer) or your
|
||||
school, if any, to sign a "copyright disclaimer" for the program, if
|
||||
necessary. Here is a sample; alter the names:
|
||||
|
||||
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
|
||||
`Gnomovision' (which makes passes at compilers) written by James Hacker.
|
||||
|
||||
<signature of Ty Coon>, 1 April 1989
|
||||
Ty Coon, President of Vice
|
||||
|
||||
This General Public License does not permit incorporating your program into
|
||||
proprietary programs. If your program is a subroutine library, you may
|
||||
consider it more useful to permit linking proprietary applications with the
|
||||
library. If this is what you want to do, use the GNU Library General
|
||||
Public License instead of this License.
|
||||
172
usbdrv/Readme.txt
Normal file
172
usbdrv/Readme.txt
Normal file
@ -0,0 +1,172 @@
|
||||
This is the Readme file to Objective Development's firmware-only USB driver
|
||||
for Atmel AVR microcontrollers. For more information please visit
|
||||
http://www.obdev.at/vusb/
|
||||
|
||||
This directory contains the USB firmware only. Copy it as-is to your own
|
||||
project and add all .c and .S files to your project (these files are marked
|
||||
with an asterisk in the list below). Then copy usbconfig-prototype.h as
|
||||
usbconfig.h to your project and edit it according to your configuration.
|
||||
|
||||
|
||||
TECHNICAL DOCUMENTATION
|
||||
=======================
|
||||
The technical documentation (API) for the firmware driver is contained in the
|
||||
file "usbdrv.h". Please read all of it carefully! Configuration options are
|
||||
documented in "usbconfig-prototype.h".
|
||||
|
||||
The driver consists of the following files:
|
||||
Readme.txt ............. The file you are currently reading.
|
||||
Changelog.txt .......... Release notes for all versions of the driver.
|
||||
usbdrv.h ............... Driver interface definitions and technical docs.
|
||||
* usbdrv.c ............... High level language part of the driver. Link this
|
||||
module to your code!
|
||||
* usbdrvasm.S ............ Assembler part of the driver. This module is mostly
|
||||
a stub and includes one of the usbdrvasm*.S files
|
||||
depending on processor clock. Link this module to
|
||||
your code!
|
||||
usbdrvasm*.inc ......... Assembler routines for particular clock frequencies.
|
||||
Included by usbdrvasm.S, don't link it directly!
|
||||
asmcommon.inc .......... Common assembler routines. Included by
|
||||
usbdrvasm*.inc, don't link it directly!
|
||||
usbconfig-prototype.h .. Prototype for your own usbdrv.h file.
|
||||
* oddebug.c .............. Debug functions. Only used when DEBUG_LEVEL is
|
||||
defined to a value greater than 0. Link this module
|
||||
to your code!
|
||||
oddebug.h .............. Interface definitions of the debug module.
|
||||
usbportability.h ....... Header with compiler-dependent stuff.
|
||||
usbdrvasm.asm .......... Compatibility stub for IAR-C-compiler. Use this
|
||||
module instead of usbdrvasm.S when you assembler
|
||||
with IAR's tools.
|
||||
License.txt ............ Open Source license for this driver.
|
||||
CommercialLicense.txt .. Optional commercial license for this driver.
|
||||
USB-ID-FAQ.txt ......... General infos about USB Product- and Vendor-IDs.
|
||||
USB-IDs-for-free.txt ... List and terms of use for free shared PIDs.
|
||||
|
||||
(*) ... These files should be linked to your project.
|
||||
|
||||
|
||||
CPU CORE CLOCK FREQUENCY
|
||||
========================
|
||||
We supply assembler modules for clock frequencies of 12 MHz, 12.8 MHz, 15 MHz,
|
||||
16 MHz, 16.5 MHz 18 MHz and 20 MHz. Other clock rates are not supported. The
|
||||
actual clock rate must be configured in usbconfig.h.
|
||||
|
||||
12 MHz Clock
|
||||
This is the traditional clock rate of V-USB because it's the lowest clock
|
||||
rate where the timing constraints of the USB spec can be met.
|
||||
|
||||
15 MHz Clock
|
||||
Similar to 12 MHz, but some NOPs inserted. On the other hand, the higher clock
|
||||
rate allows for some loops which make the resulting code size somewhat smaller
|
||||
than the 12 MHz version.
|
||||
|
||||
16 MHz Clock
|
||||
This clock rate has been added for users of the Arduino board and other
|
||||
ready-made boards which come with a fixed 16 MHz crystal. It's also an option
|
||||
if you need the slightly higher clock rate for performance reasons. Since
|
||||
16 MHz is not divisible by the USB low speed bit clock of 1.5 MHz, the code
|
||||
is somewhat tricky and has to insert a leap cycle every third byte.
|
||||
|
||||
12.8 MHz and 16.5 MHz Clock
|
||||
The assembler modules for these clock rates differ from the other modules
|
||||
because they have been built for an RC oscillator with only 1% precision. The
|
||||
receiver code inserts leap cycles to compensate for clock deviations. 1% is
|
||||
also the precision which can be achieved by calibrating the internal RC
|
||||
oscillator of the AVR. Please note that only AVRs with internal 64 MHz PLL
|
||||
oscillator can reach 16.5 MHz with the RC oscillator. This includes the very
|
||||
popular ATTiny25, ATTiny45, ATTiny85 series as well as the ATTiny26. Almost
|
||||
all AVRs can reach 12.8 MHz, although this is outside the specified range.
|
||||
|
||||
See the EasyLogger example at http://www.obdev.at/vusb/easylogger.html for
|
||||
code which calibrates the RC oscillator based on the USB frame clock.
|
||||
|
||||
18 MHz Clock
|
||||
This module is closer to the USB specification because it performs an on the
|
||||
fly CRC check for incoming packets. Packets with invalid checksum are
|
||||
discarded as required by the spec. If you also implement checks for data
|
||||
PID toggling on application level (see option USB_CFG_CHECK_DATA_TOGGLING
|
||||
in usbconfig.h for more info), this ensures data integrity. Due to the CRC
|
||||
tables and alignment requirements, this code is bigger than modules for other
|
||||
clock rates. To activate this module, you must define USB_CFG_CHECK_CRC to 1
|
||||
and USB_CFG_CLOCK_KHZ to 18000 in usbconfig.h.
|
||||
|
||||
20 MHz Clock
|
||||
This module is for people who won't do it with less than the maximum. Since
|
||||
20 MHz is not divisible by the USB low speed bit clock of 1.5 MHz, the code
|
||||
uses similar tricks as the 16 MHz module to insert leap cycles.
|
||||
|
||||
|
||||
USB IDENTIFIERS
|
||||
===============
|
||||
Every USB device needs a vendor- and a product-identifier (VID and PID). VIDs
|
||||
are obtained from usb.org for a price of 1,500 USD. Once you have a VID, you
|
||||
can assign PIDs at will.
|
||||
|
||||
Since an entry level cost of 1,500 USD is too high for most small companies
|
||||
and hobbyists, we provide some VID/PID pairs for free. See the file
|
||||
USB-IDs-for-free.txt for details.
|
||||
|
||||
Objective Development also has some license offerings which include product
|
||||
IDs. See http://www.obdev.at/vusb/ for details.
|
||||
|
||||
|
||||
DEVELOPMENT SYSTEM
|
||||
==================
|
||||
This driver has been developed and optimized for the GNU compiler version 3
|
||||
and 4. We recommend that you use the GNU compiler suite because it is freely
|
||||
available. V-USB has also been ported to the IAR compiler and assembler. It
|
||||
has been tested with IAR 4.10B/W32 and 4.12A/W32 on an ATmega8 with the
|
||||
"small" and "tiny" memory model. Not every release is tested with IAR CC and
|
||||
the driver may therefore fail to compile with IAR. Please note that gcc is
|
||||
more efficient for usbdrv.c because this module has been deliberately
|
||||
optimized for gcc.
|
||||
|
||||
Gcc version 3 produces smaller code than version 4 due to new optimizing
|
||||
capabilities which don't always improve things on 8 bit CPUs. The code size
|
||||
generated by gcc 4 can be reduced with the compiler options
|
||||
-fno-move-loop-invariants, -fno-tree-scev-cprop and
|
||||
-fno-inline-small-functions in addition to -Os. On devices with more than
|
||||
8k of flash memory, we also recommend the linker option --relax (written as
|
||||
-Wl,--relax for gcc) to convert absolute calls into relative where possible.
|
||||
|
||||
For more information about optimizing options see:
|
||||
|
||||
http://www.tty1.net/blog/2008-04-29-avr-gcc-optimisations_en.html
|
||||
|
||||
These optimizations are good for gcc 4.x. Version 3.x of gcc does not support
|
||||
most of these options and produces good code anyway.
|
||||
|
||||
|
||||
USING V-USB FOR FREE
|
||||
====================
|
||||
The AVR firmware driver is published under the GNU General Public License
|
||||
Version 2 (GPL2) and the GNU General Public License Version 3 (GPL3). It is
|
||||
your choice whether you apply the terms of version 2 or version 3.
|
||||
|
||||
If you decide for the free GPL2 or GPL3, we STRONGLY ENCOURAGE you to do the
|
||||
following things IN ADDITION to the obligations from the GPL:
|
||||
|
||||
(1) Publish your entire project on a web site and drop us a note with the URL.
|
||||
Use the form at http://www.obdev.at/vusb/feedback.html for your submission.
|
||||
If you don't have a web site, you can publish the project in obdev's
|
||||
documentation wiki at
|
||||
http://www.obdev.at/goto.php?t=vusb-wiki&p=hosted-projects.
|
||||
|
||||
(2) Adhere to minimum publication standards. Please include AT LEAST:
|
||||
- a circuit diagram in PDF, PNG or GIF format
|
||||
- full source code for the host software
|
||||
- a Readme.txt file in ASCII format which describes the purpose of the
|
||||
project and what can be found in which directories and which files
|
||||
- a reference to http://www.obdev.at/vusb/
|
||||
|
||||
(3) If you improve the driver firmware itself, please give us a free license
|
||||
to your modifications for our commercial license offerings.
|
||||
|
||||
|
||||
COMMERCIAL LICENSES FOR V-USB
|
||||
=============================
|
||||
If you don't want to publish your source code under the terms of the GPL,
|
||||
you can simply pay money for V-USB. As an additional benefit you get
|
||||
USB PIDs for free, reserved exclusively to you. See the file
|
||||
"CommercialLicense.txt" for details.
|
||||
|
||||
149
usbdrv/USB-ID-FAQ.txt
Normal file
149
usbdrv/USB-ID-FAQ.txt
Normal file
@ -0,0 +1,149 @@
|
||||
Version 2012-07-09
|
||||
|
||||
==========================
|
||||
WHY DO WE NEED THESE IDs?
|
||||
==========================
|
||||
|
||||
USB is more than a low level protocol for data transport. It also defines a
|
||||
common set of requests which must be understood by all devices. And as part
|
||||
of these common requests, the specification defines data structures, the
|
||||
USB Descriptors, which are used to describe the properties of the device.
|
||||
|
||||
From the perspective of an operating system, it is therefore possible to find
|
||||
out basic properties of a device (such as e.g. the manufacturer and the name
|
||||
of the device) without a device-specific driver. This is essential because
|
||||
the operating system can choose a driver to load based on this information
|
||||
(Plug-And-Play).
|
||||
|
||||
Among the most important properties in the Device Descriptor are the USB
|
||||
Vendor- and Product-ID. Both are 16 bit integers. The most simple form of
|
||||
driver matching is based on these IDs. The driver announces the Vendor- and
|
||||
Product-IDs of the devices it can handle and the operating system loads the
|
||||
appropriate driver when the device is connected.
|
||||
|
||||
It is obvious that this technique only works if the pair Vendor- plus
|
||||
Product-ID is unique: Only devices which require the same driver can have the
|
||||
same pair of IDs.
|
||||
|
||||
|
||||
=====================================================
|
||||
HOW DOES THE USB STANDARD ENSURE THAT IDs ARE UNIQUE?
|
||||
=====================================================
|
||||
|
||||
Since it is so important that USB IDs are unique, the USB Implementers Forum,
|
||||
Inc. (usb.org) needs a way to enforce this legally. It is not forbidden by
|
||||
law to build a device and assign it any random numbers as IDs. Usb.org
|
||||
therefore needs an agreement to regulate the use of USB IDs. The agreement
|
||||
binds only parties who agreed to it, of course. Everybody else is free to use
|
||||
any numbers for their IDs.
|
||||
|
||||
So how can usb.org ensure that every manufacturer of USB devices enters into
|
||||
an agreement with them? They do it via trademark licensing. Usb.org has
|
||||
registered the trademark "USB", all associated logos and related terms. If
|
||||
you want to put an USB logo on your product or claim that it is USB
|
||||
compliant, you must license these trademarks from usb.org. And this is where
|
||||
you enter into an agreement. See the "USB-IF Trademark License Agreement and
|
||||
Usage Guidelines for the USB-IF Logo" at
|
||||
http://www.usb.org/developers/logo_license/.
|
||||
|
||||
Licensing the USB trademarks requires that you buy a USB Vendor-ID from
|
||||
usb.org (one-time fee of ca. 2,000 USD), that you become a member of usb.org
|
||||
(yearly fee of ca. 4,000 USD) and that you meet all the technical
|
||||
specifications from the USB spec.
|
||||
|
||||
This means that most hobbyists and small companies will never be able to
|
||||
become USB compliant, just because membership is so expensive. And you can't
|
||||
be compliant with a driver based on V-USB anyway, because the AVR's port pins
|
||||
don't meet the electrical specifications for USB. So, in principle, all
|
||||
hobbyists and small companies are free to choose any random numbers for their
|
||||
IDs. They have nothing to lose...
|
||||
|
||||
There is one exception worth noting, though: If you use a sub-component which
|
||||
implements USB, the vendor of the sub-components may guarantee USB
|
||||
compliance. This might apply to some or all of FTDI's solutions.
|
||||
|
||||
|
||||
=======================================================================
|
||||
WHY SHOULD YOU OBTAIN USB IDs EVEN IF YOU DON'T LICENSE USB TRADEMARKS?
|
||||
=======================================================================
|
||||
|
||||
You have learned in the previous section that you are free to choose any
|
||||
numbers for your IDs anyway. So why not do exactly this? There is still the
|
||||
technical issue. If you choose IDs which are already in use by somebody else,
|
||||
operating systems will load the wrong drivers and your device won't work.
|
||||
Even if you choose IDs which are not currently in use, they may be in use in
|
||||
the next version of the operating system or even after an automatic update.
|
||||
|
||||
So what you need is a pair of Vendor- and Product-IDs for which you have the
|
||||
guarantee that no USB compliant product uses them. This implies that no
|
||||
operating system will ever ship with drivers responsible for these IDs.
|
||||
|
||||
|
||||
==============================================
|
||||
HOW DOES OBJECTIVE DEVELOPMENT HANDLE USB IDs?
|
||||
==============================================
|
||||
|
||||
Objective Development gives away pairs of USB-IDs with their V-USB licenses.
|
||||
In order to ensure that these IDs are unique, Objective Development has an
|
||||
agreement with the company/person who has bought the USB Vendor-ID from
|
||||
usb.org. This agreement ensures that a range of USB Product-IDs is reserved
|
||||
for assignment by Objective Development and that the owner of the Vendor-ID
|
||||
won't give it to anybody else.
|
||||
|
||||
This means that you have to trust three parties to ensure uniqueness of
|
||||
your IDs:
|
||||
|
||||
- Objective Development, that they don't give the same PID to more than
|
||||
one person.
|
||||
- The owner of the Vendor-ID that they don't assign PIDs from the range
|
||||
assigned to Objective Development to anybody else.
|
||||
- Usb.org that they don't assign the same Vendor-ID a second time.
|
||||
|
||||
|
||||
==================================
|
||||
WHO IS THE OWNER OF THE VENDOR-ID?
|
||||
==================================
|
||||
|
||||
Objective Development has obtained ranges of USB Product-IDs under two
|
||||
Vendor-IDs: Under Vendor-ID 5824 from Wouter van Ooijen (Van Ooijen
|
||||
Technische Informatica, www.voti.nl) and under Vendor-ID 8352 from Jason
|
||||
Kotzin (now flirc.tv, Inc.). Both VID owners have received their Vendor-ID
|
||||
directly from usb.org.
|
||||
|
||||
|
||||
=========================================================================
|
||||
CAN I USE USB-IDs FROM OBJECTIVE DEVELOPMENT WITH OTHER DRIVERS/HARDWARE?
|
||||
=========================================================================
|
||||
|
||||
The short answer is: Yes. All you get is a guarantee that the IDs are never
|
||||
assigned to anybody else. What more do you need?
|
||||
|
||||
|
||||
============================
|
||||
WHAT ABOUT SHARED ID PAIRS?
|
||||
============================
|
||||
|
||||
Objective Development has reserved some PID/VID pairs for shared use. You
|
||||
have no guarantee of uniqueness for them, except that no USB compliant device
|
||||
uses them. In order to avoid technical problems, we must ensure that all
|
||||
devices with the same pair of IDs use the same driver on kernel level. For
|
||||
details, see the file USB-IDs-for-free.txt.
|
||||
|
||||
|
||||
======================================================
|
||||
I HAVE HEARD THAT SUB-LICENSING OF USB-IDs IS ILLEGAL?
|
||||
======================================================
|
||||
|
||||
A 16 bit integer number cannot be protected by copyright laws. It is not
|
||||
sufficiently complex. And since none of the parties involved entered into the
|
||||
USB-IF Trademark License Agreement, we are not bound by this agreement. So
|
||||
there is no reason why it should be illegal to sub-license USB-IDs.
|
||||
|
||||
|
||||
=============================================
|
||||
WHO IS LIABLE IF THERE ARE INCOMPATIBILITIES?
|
||||
=============================================
|
||||
|
||||
Objective Development disclaims all liabilities which might arise from the
|
||||
assignment of IDs. If you guarantee product features to your customers
|
||||
without proper disclaimer, YOU are liable for that.
|
||||
154
usbdrv/USB-IDs-for-free.txt
Normal file
154
usbdrv/USB-IDs-for-free.txt
Normal file
@ -0,0 +1,154 @@
|
||||
Version 2009-08-22
|
||||
|
||||
===========================
|
||||
FREE USB-IDs FOR SHARED USE
|
||||
===========================
|
||||
|
||||
Objective Development has reserved a set of USB Product-IDs for use according
|
||||
to the guidelines outlined below. For more information about the concept of
|
||||
USB IDs please see the file USB-ID-FAQ.txt. Objective Development guarantees
|
||||
that the IDs listed below are not used by any USB compliant devices.
|
||||
|
||||
|
||||
====================
|
||||
MECHANISM OF SHARING
|
||||
====================
|
||||
|
||||
From a technical point of view, two different devices can share the same USB
|
||||
Vendor- and Product-ID if they require the same driver on operating system
|
||||
level. We make use of this fact by assigning separate IDs for various device
|
||||
classes. On application layer, devices must be distinguished by their textual
|
||||
name or serial number. We offer separate sets of IDs for discrimination by
|
||||
textual name and for serial number.
|
||||
|
||||
Examples for shared use of USB IDs are included with V-USB in the "examples"
|
||||
subdirectory.
|
||||
|
||||
|
||||
======================================
|
||||
IDs FOR DISCRIMINATION BY TEXTUAL NAME
|
||||
======================================
|
||||
|
||||
If you use one of the IDs listed below, your device and host-side software
|
||||
must conform to these rules:
|
||||
|
||||
(1) The USB device MUST provide a textual representation of the manufacturer
|
||||
and product identification. The manufacturer identification MUST be available
|
||||
at least in USB language 0x0409 (English/US).
|
||||
|
||||
(2) The textual manufacturer identification MUST contain either an Internet
|
||||
domain name (e.g. "mycompany.com") registered and owned by you, or an e-mail
|
||||
address under your control (e.g. "myname@gmx.net"). You can embed the domain
|
||||
name or e-mail address in any string you like, e.g. "Objective Development
|
||||
http://www.obdev.at/vusb/".
|
||||
|
||||
(3) You are responsible for retaining ownership of the domain or e-mail
|
||||
address for as long as any of your products are in use.
|
||||
|
||||
(4) You may choose any string for the textual product identification, as long
|
||||
as this string is unique within the scope of your textual manufacturer
|
||||
identification.
|
||||
|
||||
(5) Application side device look-up MUST be based on the textual manufacturer
|
||||
and product identification in addition to VID/PID matching. The driver
|
||||
matching MUST be a comparison of the entire strings, NOT a sub-string match.
|
||||
|
||||
(6) For devices which implement a particular USB device class (e.g. HID), the
|
||||
operating system's default class driver MUST be used. If an operating system
|
||||
driver for Vendor Class devices is needed, this driver must be libusb or
|
||||
libusb-win32 (see http://libusb.org/ and
|
||||
http://libusb-win32.sourceforge.net/).
|
||||
|
||||
Table if IDs for discrimination by textual name:
|
||||
|
||||
PID dec (hex) | VID dec (hex) | Description of use
|
||||
==============+===============+============================================
|
||||
1500 (0x05dc) | 5824 (0x16c0) | For Vendor Class devices with libusb
|
||||
--------------+---------------+--------------------------------------------
|
||||
1503 (0x05df) | 5824 (0x16c0) | For generic HID class devices (which are
|
||||
| | NOT mice, keyboards or joysticks)
|
||||
--------------+---------------+--------------------------------------------
|
||||
1505 (0x05e1) | 5824 (0x16c0) | For CDC-ACM class devices (modems)
|
||||
--------------+---------------+--------------------------------------------
|
||||
1508 (0x05e4) | 5824 (0x16c0) | For MIDI class devices
|
||||
--------------+---------------+--------------------------------------------
|
||||
|
||||
Note that Windows caches the textual product- and vendor-description for
|
||||
mice, keyboards and joysticks. Name-bsed discrimination is therefore not
|
||||
recommended for these device classes.
|
||||
|
||||
|
||||
=======================================
|
||||
IDs FOR DISCRIMINATION BY SERIAL NUMBER
|
||||
=======================================
|
||||
|
||||
If you use one of the IDs listed below, your device and host-side software
|
||||
must conform to these rules:
|
||||
|
||||
(1) The USB device MUST provide a textual representation of the serial
|
||||
number, unless ONLY the operating system's default class driver is used.
|
||||
The serial number string MUST be available at least in USB language 0x0409
|
||||
(English/US).
|
||||
|
||||
(2) The serial number MUST start with either an Internet domain name (e.g.
|
||||
"mycompany.com") registered and owned by you, or an e-mail address under your
|
||||
control (e.g. "myname@gmx.net"), both terminated with a colon (":") character.
|
||||
You MAY append any string you like for further discrimination of your devices.
|
||||
|
||||
(3) You are responsible for retaining ownership of the domain or e-mail
|
||||
address for as long as any of your products are in use.
|
||||
|
||||
(5) Application side device look-up MUST be based on the serial number string
|
||||
in addition to VID/PID matching. The matching must start at the first
|
||||
character of the serial number string and include the colon character
|
||||
terminating your domain or e-mail address. It MAY stop anywhere after that.
|
||||
|
||||
(6) For devices which implement a particular USB device class (e.g. HID), the
|
||||
operating system's default class driver MUST be used. If an operating system
|
||||
driver for Vendor Class devices is needed, this driver must be libusb or
|
||||
libusb-win32 (see http://libusb.org/ and
|
||||
http://libusb-win32.sourceforge.net/).
|
||||
|
||||
(7) If ONLY the operating system's default class driver is used, e.g. for
|
||||
mice, keyboards, joysticks, CDC or MIDI devices and no discrimination by an
|
||||
application is needed, the serial number may be omitted.
|
||||
|
||||
|
||||
Table if IDs for discrimination by serial number string:
|
||||
|
||||
PID dec (hex) | VID dec (hex) | Description of use
|
||||
===============+===============+===========================================
|
||||
10200 (0x27d8) | 5824 (0x16c0) | For Vendor Class devices with libusb
|
||||
---------------+---------------+-------------------------------------------
|
||||
10201 (0x27d9) | 5824 (0x16c0) | For generic HID class devices (which are
|
||||
| | NOT mice, keyboards or joysticks)
|
||||
---------------+---------------+-------------------------------------------
|
||||
10202 (0x27da) | 5824 (0x16c0) | For USB Mice
|
||||
---------------+---------------+-------------------------------------------
|
||||
10203 (0x27db) | 5824 (0x16c0) | For USB Keyboards
|
||||
---------------+---------------+-------------------------------------------
|
||||
10204 (0x27dc) | 5824 (0x16c0) | For USB Joysticks
|
||||
---------------+---------------+-------------------------------------------
|
||||
10205 (0x27dd) | 5824 (0x16c0) | For CDC-ACM class devices (modems)
|
||||
---------------+---------------+-------------------------------------------
|
||||
10206 (0x27de) | 5824 (0x16c0) | For MIDI class devices
|
||||
---------------+---------------+-------------------------------------------
|
||||
|
||||
|
||||
=================
|
||||
ORIGIN OF USB-IDs
|
||||
=================
|
||||
|
||||
OBJECTIVE DEVELOPMENT Software GmbH has obtained all VID/PID pairs listed
|
||||
here from Wouter van Ooijen (see www.voti.nl) for exclusive disposition.
|
||||
Wouter van Ooijen has obtained the VID from the USB Implementers Forum, Inc.
|
||||
(see www.usb.org). The VID is registered for the company name "Van Ooijen
|
||||
Technische Informatica".
|
||||
|
||||
|
||||
==========
|
||||
DISCLAIMER
|
||||
==========
|
||||
|
||||
OBJECTIVE DEVELOPMENT Software GmbH disclaims all liability for any
|
||||
problems which are caused by the shared use of these VID/PID pairs.
|
||||
187
usbdrv/asmcommon.inc
Normal file
187
usbdrv/asmcommon.inc
Normal file
@ -0,0 +1,187 @@
|
||||
/* Name: asmcommon.inc
|
||||
* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
|
||||
* Author: Christian Starkjohann
|
||||
* Creation Date: 2007-11-05
|
||||
* Tabsize: 4
|
||||
* Copyright: (c) 2007 by OBJECTIVE DEVELOPMENT Software GmbH
|
||||
* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
|
||||
*/
|
||||
|
||||
/* Do not link this file! Link usbdrvasm.S instead, which includes the
|
||||
* appropriate implementation!
|
||||
*/
|
||||
|
||||
/*
|
||||
General Description:
|
||||
This file contains assembler code which is shared among the USB driver
|
||||
implementations for different CPU cocks. Since the code must be inserted
|
||||
in the middle of the module, it's split out into this file and #included.
|
||||
|
||||
Jump destinations called from outside:
|
||||
sofError: Called when no start sequence was found.
|
||||
se0: Called when a package has been successfully received.
|
||||
overflow: Called when receive buffer overflows.
|
||||
doReturn: Called after sending data.
|
||||
|
||||
Outside jump destinations used by this module:
|
||||
waitForJ: Called to receive an already arriving packet.
|
||||
sendAckAndReti:
|
||||
sendNakAndReti:
|
||||
sendCntAndReti:
|
||||
usbSendAndReti:
|
||||
|
||||
The following macros must be defined before this file is included:
|
||||
.macro POP_STANDARD
|
||||
.endm
|
||||
.macro POP_RETI
|
||||
.endm
|
||||
*/
|
||||
|
||||
#define token x1
|
||||
|
||||
overflow:
|
||||
ldi x2, 1<<USB_INTR_PENDING_BIT
|
||||
USB_STORE_PENDING(x2) ; clear any pending interrupts
|
||||
ignorePacket:
|
||||
clr token
|
||||
rjmp storeTokenAndReturn
|
||||
|
||||
;----------------------------------------------------------------------------
|
||||
; Processing of received packet (numbers in brackets are cycles after center of SE0)
|
||||
;----------------------------------------------------------------------------
|
||||
;This is the only non-error exit point for the software receiver loop
|
||||
;we don't check any CRCs here because there is no time left.
|
||||
se0:
|
||||
subi cnt, USB_BUFSIZE ;[5]
|
||||
neg cnt ;[6]
|
||||
sub YL, cnt ;[7]
|
||||
sbci YH, 0 ;[8]
|
||||
ldi x2, 1<<USB_INTR_PENDING_BIT ;[9]
|
||||
USB_STORE_PENDING(x2) ;[10] clear pending intr and check flag later. SE0 should be over.
|
||||
ld token, y ;[11]
|
||||
cpi token, USBPID_DATA0 ;[13]
|
||||
breq handleData ;[14]
|
||||
cpi token, USBPID_DATA1 ;[15]
|
||||
breq handleData ;[16]
|
||||
lds shift, usbDeviceAddr;[17]
|
||||
ldd x2, y+1 ;[19] ADDR and 1 bit endpoint number
|
||||
lsl x2 ;[21] shift out 1 bit endpoint number
|
||||
cpse x2, shift ;[22]
|
||||
rjmp ignorePacket ;[23]
|
||||
/* only compute endpoint number in x3 if required later */
|
||||
#if USB_CFG_HAVE_INTRIN_ENDPOINT || USB_CFG_IMPLEMENT_FN_WRITEOUT
|
||||
ldd x3, y+2 ;[24] endpoint number + crc
|
||||
rol x3 ;[26] shift in LSB of endpoint
|
||||
#endif
|
||||
cpi token, USBPID_IN ;[27]
|
||||
breq handleIn ;[28]
|
||||
cpi token, USBPID_SETUP ;[29]
|
||||
breq handleSetupOrOut ;[30]
|
||||
cpi token, USBPID_OUT ;[31]
|
||||
brne ignorePacket ;[32] must be ack, nak or whatever
|
||||
; rjmp handleSetupOrOut ; fallthrough
|
||||
|
||||
;Setup and Out are followed by a data packet two bit times (16 cycles) after
|
||||
;the end of SE0. The sync code allows up to 40 cycles delay from the start of
|
||||
;the sync pattern until the first bit is sampled. That's a total of 56 cycles.
|
||||
handleSetupOrOut: ;[32]
|
||||
#if USB_CFG_IMPLEMENT_FN_WRITEOUT /* if we have data for endpoint != 0, set usbCurrentTok to address */
|
||||
andi x3, 0xf ;[32]
|
||||
breq storeTokenAndReturn ;[33]
|
||||
mov token, x3 ;[34] indicate that this is endpoint x OUT
|
||||
#endif
|
||||
storeTokenAndReturn:
|
||||
sts usbCurrentTok, token;[35]
|
||||
doReturn:
|
||||
POP_STANDARD ;[37] 12...16 cycles
|
||||
USB_LOAD_PENDING(YL) ;[49]
|
||||
sbrc YL, USB_INTR_PENDING_BIT;[50] check whether data is already arriving
|
||||
rjmp waitForJ ;[51] save the pops and pushes -- a new interrupt is already pending
|
||||
sofError:
|
||||
POP_RETI ;macro call
|
||||
reti
|
||||
|
||||
handleData:
|
||||
#if USB_CFG_CHECK_CRC
|
||||
CRC_CLEANUP_AND_CHECK ; jumps to ignorePacket if CRC error
|
||||
#endif
|
||||
lds shift, usbCurrentTok;[18]
|
||||
tst shift ;[20]
|
||||
breq doReturn ;[21]
|
||||
lds x2, usbRxLen ;[22]
|
||||
tst x2 ;[24]
|
||||
brne sendNakAndReti ;[25]
|
||||
; 2006-03-11: The following two lines fix a problem where the device was not
|
||||
; recognized if usbPoll() was called less frequently than once every 4 ms.
|
||||
cpi cnt, 4 ;[26] zero sized data packets are status phase only -- ignore and ack
|
||||
brmi sendAckAndReti ;[27] keep rx buffer clean -- we must not NAK next SETUP
|
||||
#if USB_CFG_CHECK_DATA_TOGGLING
|
||||
sts usbCurrentDataToken, token ; store for checking by C code
|
||||
#endif
|
||||
sts usbRxLen, cnt ;[28] store received data, swap buffers
|
||||
sts usbRxToken, shift ;[30]
|
||||
lds x2, usbInputBufOffset;[32] swap buffers
|
||||
ldi cnt, USB_BUFSIZE ;[34]
|
||||
sub cnt, x2 ;[35]
|
||||
sts usbInputBufOffset, cnt;[36] buffers now swapped
|
||||
rjmp sendAckAndReti ;[38] 40 + 17 = 57 until SOP
|
||||
|
||||
handleIn:
|
||||
;We don't send any data as long as the C code has not processed the current
|
||||
;input data and potentially updated the output data. That's more efficient
|
||||
;in terms of code size than clearing the tx buffers when a packet is received.
|
||||
lds x1, usbRxLen ;[30]
|
||||
cpi x1, 1 ;[32] negative values are flow control, 0 means "buffer free"
|
||||
brge sendNakAndReti ;[33] unprocessed input packet?
|
||||
ldi x1, USBPID_NAK ;[34] prepare value for usbTxLen
|
||||
#if USB_CFG_HAVE_INTRIN_ENDPOINT
|
||||
andi x3, 0xf ;[35] x3 contains endpoint
|
||||
#if USB_CFG_SUPPRESS_INTR_CODE
|
||||
brne sendNakAndReti ;[36]
|
||||
#else
|
||||
brne handleIn1 ;[36]
|
||||
#endif
|
||||
#endif
|
||||
lds cnt, usbTxLen ;[37]
|
||||
sbrc cnt, 4 ;[39] all handshake tokens have bit 4 set
|
||||
rjmp sendCntAndReti ;[40] 42 + 16 = 58 until SOP
|
||||
sts usbTxLen, x1 ;[41] x1 == USBPID_NAK from above
|
||||
ldi YL, lo8(usbTxBuf) ;[43]
|
||||
ldi YH, hi8(usbTxBuf) ;[44]
|
||||
rjmp usbSendAndReti ;[45] 57 + 12 = 59 until SOP
|
||||
|
||||
; Comment about when to set usbTxLen to USBPID_NAK:
|
||||
; We should set it back when we receive the ACK from the host. This would
|
||||
; be simple to implement: One static variable which stores whether the last
|
||||
; tx was for endpoint 0 or 1 and a compare in the receiver to distinguish the
|
||||
; ACK. However, we set it back immediately when we send the package,
|
||||
; assuming that no error occurs and the host sends an ACK. We save one byte
|
||||
; RAM this way and avoid potential problems with endless retries. The rest of
|
||||
; the driver assumes error-free transfers anyway.
|
||||
|
||||
#if !USB_CFG_SUPPRESS_INTR_CODE && USB_CFG_HAVE_INTRIN_ENDPOINT /* placed here due to relative jump range */
|
||||
handleIn1: ;[38]
|
||||
#if USB_CFG_HAVE_INTRIN_ENDPOINT3
|
||||
; 2006-06-10 as suggested by O.Tamura: support second INTR IN / BULK IN endpoint
|
||||
cpi x3, USB_CFG_EP3_NUMBER;[38]
|
||||
breq handleIn3 ;[39]
|
||||
#endif
|
||||
lds cnt, usbTxLen1 ;[40]
|
||||
sbrc cnt, 4 ;[42] all handshake tokens have bit 4 set
|
||||
rjmp sendCntAndReti ;[43] 47 + 16 = 63 until SOP
|
||||
sts usbTxLen1, x1 ;[44] x1 == USBPID_NAK from above
|
||||
ldi YL, lo8(usbTxBuf1) ;[46]
|
||||
ldi YH, hi8(usbTxBuf1) ;[47]
|
||||
rjmp usbSendAndReti ;[48] 50 + 12 = 62 until SOP
|
||||
|
||||
#if USB_CFG_HAVE_INTRIN_ENDPOINT3
|
||||
handleIn3:
|
||||
lds cnt, usbTxLen3 ;[41]
|
||||
sbrc cnt, 4 ;[43]
|
||||
rjmp sendCntAndReti ;[44] 49 + 16 = 65 until SOP
|
||||
sts usbTxLen3, x1 ;[45] x1 == USBPID_NAK from above
|
||||
ldi YL, lo8(usbTxBuf3) ;[47]
|
||||
ldi YH, hi8(usbTxBuf3) ;[48]
|
||||
rjmp usbSendAndReti ;[49] 51 + 12 = 63 until SOP
|
||||
#endif
|
||||
#endif
|
||||
49
usbdrv/oddebug.c
Normal file
49
usbdrv/oddebug.c
Normal file
@ -0,0 +1,49 @@
|
||||
/* Name: oddebug.c
|
||||
* Project: AVR library
|
||||
* Author: Christian Starkjohann
|
||||
* Creation Date: 2005-01-16
|
||||
* Tabsize: 4
|
||||
* Copyright: (c) 2005 by OBJECTIVE DEVELOPMENT Software GmbH
|
||||
* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
|
||||
*/
|
||||
|
||||
#include "oddebug.h"
|
||||
|
||||
#if DEBUG_LEVEL > 0
|
||||
|
||||
#warning "Never compile production devices with debugging enabled"
|
||||
|
||||
static void uartPutc(char c)
|
||||
{
|
||||
while(!(ODDBG_USR & (1 << ODDBG_UDRE))); /* wait for data register empty */
|
||||
ODDBG_UDR = c;
|
||||
}
|
||||
|
||||
static uchar hexAscii(uchar h)
|
||||
{
|
||||
h &= 0xf;
|
||||
if(h >= 10)
|
||||
h += 'a' - (uchar)10 - '0';
|
||||
h += '0';
|
||||
return h;
|
||||
}
|
||||
|
||||
static void printHex(uchar c)
|
||||
{
|
||||
uartPutc(hexAscii(c >> 4));
|
||||
uartPutc(hexAscii(c));
|
||||
}
|
||||
|
||||
void odDebug(uchar prefix, uchar *data, uchar len)
|
||||
{
|
||||
printHex(prefix);
|
||||
uartPutc(':');
|
||||
while(len--){
|
||||
uartPutc(' ');
|
||||
printHex(*data++);
|
||||
}
|
||||
uartPutc('\r');
|
||||
uartPutc('\n');
|
||||
}
|
||||
|
||||
#endif
|
||||
122
usbdrv/oddebug.h
Normal file
122
usbdrv/oddebug.h
Normal file
@ -0,0 +1,122 @@
|
||||
/* Name: oddebug.h
|
||||
* Project: AVR library
|
||||
* Author: Christian Starkjohann
|
||||
* Creation Date: 2005-01-16
|
||||
* Tabsize: 4
|
||||
* Copyright: (c) 2005 by OBJECTIVE DEVELOPMENT Software GmbH
|
||||
* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
|
||||
*/
|
||||
|
||||
#ifndef __oddebug_h_included__
|
||||
#define __oddebug_h_included__
|
||||
|
||||
/*
|
||||
General Description:
|
||||
This module implements a function for debug logs on the serial line of the
|
||||
AVR microcontroller. Debugging can be configured with the define
|
||||
'DEBUG_LEVEL'. If this macro is not defined or defined to 0, all debugging
|
||||
calls are no-ops. If it is 1, DBG1 logs will appear, but not DBG2. If it is
|
||||
2, DBG1 and DBG2 logs will be printed.
|
||||
|
||||
A debug log consists of a label ('prefix') to indicate which debug log created
|
||||
the output and a memory block to dump in hex ('data' and 'len').
|
||||
*/
|
||||
|
||||
|
||||
#ifndef F_CPU
|
||||
# define F_CPU 12000000 /* 12 MHz */
|
||||
#endif
|
||||
|
||||
/* make sure we have the UART defines: */
|
||||
#include "usbportability.h"
|
||||
|
||||
#ifndef uchar
|
||||
# define uchar unsigned char
|
||||
#endif
|
||||
|
||||
#if DEBUG_LEVEL > 0 && !(defined TXEN || defined TXEN0) /* no UART in device */
|
||||
# warning "Debugging disabled because device has no UART"
|
||||
# undef DEBUG_LEVEL
|
||||
#endif
|
||||
|
||||
#ifndef DEBUG_LEVEL
|
||||
# define DEBUG_LEVEL 0
|
||||
#endif
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
|
||||
#if DEBUG_LEVEL > 0
|
||||
# define DBG1(prefix, data, len) odDebug(prefix, data, len)
|
||||
#else
|
||||
# define DBG1(prefix, data, len)
|
||||
#endif
|
||||
|
||||
#if DEBUG_LEVEL > 1
|
||||
# define DBG2(prefix, data, len) odDebug(prefix, data, len)
|
||||
#else
|
||||
# define DBG2(prefix, data, len)
|
||||
#endif
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
|
||||
#if DEBUG_LEVEL > 0
|
||||
extern void odDebug(uchar prefix, uchar *data, uchar len);
|
||||
|
||||
/* Try to find our control registers; ATMEL likes to rename these */
|
||||
|
||||
#if defined UBRR
|
||||
# define ODDBG_UBRR UBRR
|
||||
#elif defined UBRRL
|
||||
# define ODDBG_UBRR UBRRL
|
||||
#elif defined UBRR0
|
||||
# define ODDBG_UBRR UBRR0
|
||||
#elif defined UBRR0L
|
||||
# define ODDBG_UBRR UBRR0L
|
||||
#endif
|
||||
|
||||
#if defined UCR
|
||||
# define ODDBG_UCR UCR
|
||||
#elif defined UCSRB
|
||||
# define ODDBG_UCR UCSRB
|
||||
#elif defined UCSR0B
|
||||
# define ODDBG_UCR UCSR0B
|
||||
#endif
|
||||
|
||||
#if defined TXEN
|
||||
# define ODDBG_TXEN TXEN
|
||||
#else
|
||||
# define ODDBG_TXEN TXEN0
|
||||
#endif
|
||||
|
||||
#if defined USR
|
||||
# define ODDBG_USR USR
|
||||
#elif defined UCSRA
|
||||
# define ODDBG_USR UCSRA
|
||||
#elif defined UCSR0A
|
||||
# define ODDBG_USR UCSR0A
|
||||
#endif
|
||||
|
||||
#if defined UDRE
|
||||
# define ODDBG_UDRE UDRE
|
||||
#else
|
||||
# define ODDBG_UDRE UDRE0
|
||||
#endif
|
||||
|
||||
#if defined UDR
|
||||
# define ODDBG_UDR UDR
|
||||
#elif defined UDR0
|
||||
# define ODDBG_UDR UDR0
|
||||
#endif
|
||||
|
||||
static inline void odDebugInit(void)
|
||||
{
|
||||
ODDBG_UCR |= (1<<ODDBG_TXEN);
|
||||
ODDBG_UBRR = F_CPU / (19200 * 16L) - 1;
|
||||
}
|
||||
#else
|
||||
# define odDebugInit()
|
||||
#endif
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
|
||||
#endif /* __oddebug_h_included__ */
|
||||
384
usbdrv/usbconfig-prototype.h
Normal file
384
usbdrv/usbconfig-prototype.h
Normal file
@ -0,0 +1,384 @@
|
||||
/* Name: usbconfig.h
|
||||
* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
|
||||
* Author: Christian Starkjohann
|
||||
* Creation Date: 2005-04-01
|
||||
* Tabsize: 4
|
||||
* Copyright: (c) 2005 by OBJECTIVE DEVELOPMENT Software GmbH
|
||||
* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
|
||||
*/
|
||||
|
||||
#ifndef __usbconfig_h_included__
|
||||
#define __usbconfig_h_included__
|
||||
|
||||
/*
|
||||
General Description:
|
||||
This file is an example configuration (with inline documentation) for the USB
|
||||
driver. It configures V-USB for USB D+ connected to Port D bit 2 (which is
|
||||
also hardware interrupt 0 on many devices) and USB D- to Port D bit 4. You may
|
||||
wire the lines to any other port, as long as D+ is also wired to INT0 (or any
|
||||
other hardware interrupt, as long as it is the highest level interrupt, see
|
||||
section at the end of this file).
|
||||
+ To create your own usbconfig.h file, copy this file to your project's
|
||||
+ firmware source directory) and rename it to "usbconfig.h".
|
||||
+ Then edit it accordingly.
|
||||
*/
|
||||
|
||||
/* ---------------------------- Hardware Config ---------------------------- */
|
||||
|
||||
#define USB_CFG_IOPORTNAME D
|
||||
/* This is the port where the USB bus is connected. When you configure it to
|
||||
* "B", the registers PORTB, PINB and DDRB will be used.
|
||||
*/
|
||||
#define USB_CFG_DMINUS_BIT 4
|
||||
/* This is the bit number in USB_CFG_IOPORT where the USB D- line is connected.
|
||||
* This may be any bit in the port.
|
||||
*/
|
||||
#define USB_CFG_DPLUS_BIT 2
|
||||
/* This is the bit number in USB_CFG_IOPORT where the USB D+ line is connected.
|
||||
* This may be any bit in the port. Please note that D+ must also be connected
|
||||
* to interrupt pin INT0! [You can also use other interrupts, see section
|
||||
* "Optional MCU Description" below, or you can connect D- to the interrupt, as
|
||||
* it is required if you use the USB_COUNT_SOF feature. If you use D- for the
|
||||
* interrupt, the USB interrupt will also be triggered at Start-Of-Frame
|
||||
* markers every millisecond.]
|
||||
*/
|
||||
#define USB_CFG_CLOCK_KHZ (F_CPU/1000)
|
||||
/* Clock rate of the AVR in kHz. Legal values are 12000, 12800, 15000, 16000,
|
||||
* 16500, 18000 and 20000. The 12.8 MHz and 16.5 MHz versions of the code
|
||||
* require no crystal, they tolerate +/- 1% deviation from the nominal
|
||||
* frequency. All other rates require a precision of 2000 ppm and thus a
|
||||
* crystal!
|
||||
* Since F_CPU should be defined to your actual clock rate anyway, you should
|
||||
* not need to modify this setting.
|
||||
*/
|
||||
#define USB_CFG_CHECK_CRC 0
|
||||
/* Define this to 1 if you want that the driver checks integrity of incoming
|
||||
* data packets (CRC checks). CRC checks cost quite a bit of code size and are
|
||||
* currently only available for 18 MHz crystal clock. You must choose
|
||||
* USB_CFG_CLOCK_KHZ = 18000 if you enable this option.
|
||||
*/
|
||||
|
||||
/* ----------------------- Optional Hardware Config ------------------------ */
|
||||
|
||||
/* #define USB_CFG_PULLUP_IOPORTNAME D */
|
||||
/* If you connect the 1.5k pullup resistor from D- to a port pin instead of
|
||||
* V+, you can connect and disconnect the device from firmware by calling
|
||||
* the macros usbDeviceConnect() and usbDeviceDisconnect() (see usbdrv.h).
|
||||
* This constant defines the port on which the pullup resistor is connected.
|
||||
*/
|
||||
/* #define USB_CFG_PULLUP_BIT 4 */
|
||||
/* This constant defines the bit number in USB_CFG_PULLUP_IOPORT (defined
|
||||
* above) where the 1.5k pullup resistor is connected. See description
|
||||
* above for details.
|
||||
*/
|
||||
|
||||
/* --------------------------- Functional Range ---------------------------- */
|
||||
|
||||
#define USB_CFG_HAVE_INTRIN_ENDPOINT 0
|
||||
/* Define this to 1 if you want to compile a version with two endpoints: The
|
||||
* default control endpoint 0 and an interrupt-in endpoint (any other endpoint
|
||||
* number).
|
||||
*/
|
||||
#define USB_CFG_HAVE_INTRIN_ENDPOINT3 0
|
||||
/* Define this to 1 if you want to compile a version with three endpoints: The
|
||||
* default control endpoint 0, an interrupt-in endpoint 3 (or the number
|
||||
* configured below) and a catch-all default interrupt-in endpoint as above.
|
||||
* You must also define USB_CFG_HAVE_INTRIN_ENDPOINT to 1 for this feature.
|
||||
*/
|
||||
#define USB_CFG_EP3_NUMBER 3
|
||||
/* If the so-called endpoint 3 is used, it can now be configured to any other
|
||||
* endpoint number (except 0) with this macro. Default if undefined is 3.
|
||||
*/
|
||||
/* #define USB_INITIAL_DATATOKEN USBPID_DATA1 */
|
||||
/* The above macro defines the startup condition for data toggling on the
|
||||
* interrupt/bulk endpoints 1 and 3. Defaults to USBPID_DATA1.
|
||||
* Since the token is toggled BEFORE sending any data, the first packet is
|
||||
* sent with the oposite value of this configuration!
|
||||
*/
|
||||
#define USB_CFG_IMPLEMENT_HALT 0
|
||||
/* Define this to 1 if you also want to implement the ENDPOINT_HALT feature
|
||||
* for endpoint 1 (interrupt endpoint). Although you may not need this feature,
|
||||
* it is required by the standard. We have made it a config option because it
|
||||
* bloats the code considerably.
|
||||
*/
|
||||
#define USB_CFG_SUPPRESS_INTR_CODE 0
|
||||
/* Define this to 1 if you want to declare interrupt-in endpoints, but don't
|
||||
* want to send any data over them. If this macro is defined to 1, functions
|
||||
* usbSetInterrupt() and usbSetInterrupt3() are omitted. This is useful if
|
||||
* you need the interrupt-in endpoints in order to comply to an interface
|
||||
* (e.g. HID), but never want to send any data. This option saves a couple
|
||||
* of bytes in flash memory and the transmit buffers in RAM.
|
||||
*/
|
||||
#define USB_CFG_INTR_POLL_INTERVAL 10
|
||||
/* If you compile a version with endpoint 1 (interrupt-in), this is the poll
|
||||
* interval. The value is in milliseconds and must not be less than 10 ms for
|
||||
* low speed devices.
|
||||
*/
|
||||
#define USB_CFG_IS_SELF_POWERED 0
|
||||
/* Define this to 1 if the device has its own power supply. Set it to 0 if the
|
||||
* device is powered from the USB bus.
|
||||
*/
|
||||
#define USB_CFG_MAX_BUS_POWER 100
|
||||
/* Set this variable to the maximum USB bus power consumption of your device.
|
||||
* The value is in milliamperes. [It will be divided by two since USB
|
||||
* communicates power requirements in units of 2 mA.]
|
||||
*/
|
||||
#define USB_CFG_IMPLEMENT_FN_WRITE 0
|
||||
/* Set this to 1 if you want usbFunctionWrite() to be called for control-out
|
||||
* transfers. Set it to 0 if you don't need it and want to save a couple of
|
||||
* bytes.
|
||||
*/
|
||||
#define USB_CFG_IMPLEMENT_FN_READ 0
|
||||
/* Set this to 1 if you need to send control replies which are generated
|
||||
* "on the fly" when usbFunctionRead() is called. If you only want to send
|
||||
* data from a static buffer, set it to 0 and return the data from
|
||||
* usbFunctionSetup(). This saves a couple of bytes.
|
||||
*/
|
||||
#define USB_CFG_IMPLEMENT_FN_WRITEOUT 0
|
||||
/* Define this to 1 if you want to use interrupt-out (or bulk out) endpoints.
|
||||
* You must implement the function usbFunctionWriteOut() which receives all
|
||||
* interrupt/bulk data sent to any endpoint other than 0. The endpoint number
|
||||
* can be found in 'usbRxToken'.
|
||||
*/
|
||||
#define USB_CFG_HAVE_FLOWCONTROL 0
|
||||
/* Define this to 1 if you want flowcontrol over USB data. See the definition
|
||||
* of the macros usbDisableAllRequests() and usbEnableAllRequests() in
|
||||
* usbdrv.h.
|
||||
*/
|
||||
#define USB_CFG_DRIVER_FLASH_PAGE 0
|
||||
/* If the device has more than 64 kBytes of flash, define this to the 64 k page
|
||||
* where the driver's constants (descriptors) are located. Or in other words:
|
||||
* Define this to 1 for boot loaders on the ATMega128.
|
||||
*/
|
||||
#define USB_CFG_LONG_TRANSFERS 0
|
||||
/* Define this to 1 if you want to send/receive blocks of more than 254 bytes
|
||||
* in a single control-in or control-out transfer. Note that the capability
|
||||
* for long transfers increases the driver size.
|
||||
*/
|
||||
/* #define USB_RX_USER_HOOK(data, len) if(usbRxToken == (uchar)USBPID_SETUP) blinkLED(); */
|
||||
/* This macro is a hook if you want to do unconventional things. If it is
|
||||
* defined, it's inserted at the beginning of received message processing.
|
||||
* If you eat the received message and don't want default processing to
|
||||
* proceed, do a return after doing your things. One possible application
|
||||
* (besides debugging) is to flash a status LED on each packet.
|
||||
*/
|
||||
/* #define USB_RESET_HOOK(resetStarts) if(!resetStarts){hadUsbReset();} */
|
||||
/* This macro is a hook if you need to know when an USB RESET occurs. It has
|
||||
* one parameter which distinguishes between the start of RESET state and its
|
||||
* end.
|
||||
*/
|
||||
/* #define USB_SET_ADDRESS_HOOK() hadAddressAssigned(); */
|
||||
/* This macro (if defined) is executed when a USB SET_ADDRESS request was
|
||||
* received.
|
||||
*/
|
||||
#define USB_COUNT_SOF 0
|
||||
/* define this macro to 1 if you need the global variable "usbSofCount" which
|
||||
* counts SOF packets. This feature requires that the hardware interrupt is
|
||||
* connected to D- instead of D+.
|
||||
*/
|
||||
/* #ifdef __ASSEMBLER__
|
||||
* macro myAssemblerMacro
|
||||
* in YL, TCNT0
|
||||
* sts timer0Snapshot, YL
|
||||
* endm
|
||||
* #endif
|
||||
* #define USB_SOF_HOOK myAssemblerMacro
|
||||
* This macro (if defined) is executed in the assembler module when a
|
||||
* Start Of Frame condition is detected. It is recommended to define it to
|
||||
* the name of an assembler macro which is defined here as well so that more
|
||||
* than one assembler instruction can be used. The macro may use the register
|
||||
* YL and modify SREG. If it lasts longer than a couple of cycles, USB messages
|
||||
* immediately after an SOF pulse may be lost and must be retried by the host.
|
||||
* What can you do with this hook? Since the SOF signal occurs exactly every
|
||||
* 1 ms (unless the host is in sleep mode), you can use it to tune OSCCAL in
|
||||
* designs running on the internal RC oscillator.
|
||||
* Please note that Start Of Frame detection works only if D- is wired to the
|
||||
* interrupt, not D+. THIS IS DIFFERENT THAN MOST EXAMPLES!
|
||||
*/
|
||||
#define USB_CFG_CHECK_DATA_TOGGLING 0
|
||||
/* define this macro to 1 if you want to filter out duplicate data packets
|
||||
* sent by the host. Duplicates occur only as a consequence of communication
|
||||
* errors, when the host does not receive an ACK. Please note that you need to
|
||||
* implement the filtering yourself in usbFunctionWriteOut() and
|
||||
* usbFunctionWrite(). Use the global usbCurrentDataToken and a static variable
|
||||
* for each control- and out-endpoint to check for duplicate packets.
|
||||
*/
|
||||
#define USB_CFG_HAVE_MEASURE_FRAME_LENGTH 0
|
||||
/* define this macro to 1 if you want the function usbMeasureFrameLength()
|
||||
* compiled in. This function can be used to calibrate the AVR's RC oscillator.
|
||||
*/
|
||||
#define USB_USE_FAST_CRC 0
|
||||
/* The assembler module has two implementations for the CRC algorithm. One is
|
||||
* faster, the other is smaller. This CRC routine is only used for transmitted
|
||||
* messages where timing is not critical. The faster routine needs 31 cycles
|
||||
* per byte while the smaller one needs 61 to 69 cycles. The faster routine
|
||||
* may be worth the 32 bytes bigger code size if you transmit lots of data and
|
||||
* run the AVR close to its limit.
|
||||
*/
|
||||
|
||||
/* -------------------------- Device Description --------------------------- */
|
||||
|
||||
#define USB_CFG_VENDOR_ID 0xc0, 0x16 /* = 0x16c0 = 5824 = voti.nl */
|
||||
/* USB vendor ID for the device, low byte first. If you have registered your
|
||||
* own Vendor ID, define it here. Otherwise you may use one of obdev's free
|
||||
* shared VID/PID pairs. Be sure to read USB-IDs-for-free.txt for rules!
|
||||
* *** IMPORTANT NOTE ***
|
||||
* This template uses obdev's shared VID/PID pair for Vendor Class devices
|
||||
* with libusb: 0x16c0/0x5dc. Use this VID/PID pair ONLY if you understand
|
||||
* the implications!
|
||||
*/
|
||||
#define USB_CFG_DEVICE_ID 0xdc, 0x05 /* = 0x05dc = 1500 */
|
||||
/* This is the ID of the product, low byte first. It is interpreted in the
|
||||
* scope of the vendor ID. If you have registered your own VID with usb.org
|
||||
* or if you have licensed a PID from somebody else, define it here. Otherwise
|
||||
* you may use one of obdev's free shared VID/PID pairs. See the file
|
||||
* USB-IDs-for-free.txt for details!
|
||||
* *** IMPORTANT NOTE ***
|
||||
* This template uses obdev's shared VID/PID pair for Vendor Class devices
|
||||
* with libusb: 0x16c0/0x5dc. Use this VID/PID pair ONLY if you understand
|
||||
* the implications!
|
||||
*/
|
||||
#define USB_CFG_DEVICE_VERSION 0x00, 0x01
|
||||
/* Version number of the device: Minor number first, then major number.
|
||||
*/
|
||||
#define USB_CFG_VENDOR_NAME 'o', 'b', 'd', 'e', 'v', '.', 'a', 't'
|
||||
#define USB_CFG_VENDOR_NAME_LEN 8
|
||||
/* These two values define the vendor name returned by the USB device. The name
|
||||
* must be given as a list of characters under single quotes. The characters
|
||||
* are interpreted as Unicode (UTF-16) entities.
|
||||
* If you don't want a vendor name string, undefine these macros.
|
||||
* ALWAYS define a vendor name containing your Internet domain name if you use
|
||||
* obdev's free shared VID/PID pair. See the file USB-IDs-for-free.txt for
|
||||
* details.
|
||||
*/
|
||||
#define USB_CFG_DEVICE_NAME 'T', 'e', 'm', 'p', 'l', 'a', 't', 'e'
|
||||
#define USB_CFG_DEVICE_NAME_LEN 8
|
||||
/* Same as above for the device name. If you don't want a device name, undefine
|
||||
* the macros. See the file USB-IDs-for-free.txt before you assign a name if
|
||||
* you use a shared VID/PID.
|
||||
*/
|
||||
/*#define USB_CFG_SERIAL_NUMBER 'N', 'o', 'n', 'e' */
|
||||
/*#define USB_CFG_SERIAL_NUMBER_LEN 0 */
|
||||
/* Same as above for the serial number. If you don't want a serial number,
|
||||
* undefine the macros.
|
||||
* It may be useful to provide the serial number through other means than at
|
||||
* compile time. See the section about descriptor properties below for how
|
||||
* to fine tune control over USB descriptors such as the string descriptor
|
||||
* for the serial number.
|
||||
*/
|
||||
#define USB_CFG_DEVICE_CLASS 0xff /* set to 0 if deferred to interface */
|
||||
#define USB_CFG_DEVICE_SUBCLASS 0
|
||||
/* See USB specification if you want to conform to an existing device class.
|
||||
* Class 0xff is "vendor specific".
|
||||
*/
|
||||
#define USB_CFG_INTERFACE_CLASS 0 /* define class here if not at device level */
|
||||
#define USB_CFG_INTERFACE_SUBCLASS 0
|
||||
#define USB_CFG_INTERFACE_PROTOCOL 0
|
||||
/* See USB specification if you want to conform to an existing device class or
|
||||
* protocol. The following classes must be set at interface level:
|
||||
* HID class is 3, no subclass and protocol required (but may be useful!)
|
||||
* CDC class is 2, use subclass 2 and protocol 1 for ACM
|
||||
*/
|
||||
/* #define USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH 42 */
|
||||
/* Define this to the length of the HID report descriptor, if you implement
|
||||
* an HID device. Otherwise don't define it or define it to 0.
|
||||
* If you use this define, you must add a PROGMEM character array named
|
||||
* "usbHidReportDescriptor" to your code which contains the report descriptor.
|
||||
* Don't forget to keep the array and this define in sync!
|
||||
*/
|
||||
|
||||
/* #define USB_PUBLIC static */
|
||||
/* Use the define above if you #include usbdrv.c instead of linking against it.
|
||||
* This technique saves a couple of bytes in flash memory.
|
||||
*/
|
||||
|
||||
/* ------------------- Fine Control over USB Descriptors ------------------- */
|
||||
/* If you don't want to use the driver's default USB descriptors, you can
|
||||
* provide our own. These can be provided as (1) fixed length static data in
|
||||
* flash memory, (2) fixed length static data in RAM or (3) dynamically at
|
||||
* runtime in the function usbFunctionDescriptor(). See usbdrv.h for more
|
||||
* information about this function.
|
||||
* Descriptor handling is configured through the descriptor's properties. If
|
||||
* no properties are defined or if they are 0, the default descriptor is used.
|
||||
* Possible properties are:
|
||||
* + USB_PROP_IS_DYNAMIC: The data for the descriptor should be fetched
|
||||
* at runtime via usbFunctionDescriptor(). If the usbMsgPtr mechanism is
|
||||
* used, the data is in FLASH by default. Add property USB_PROP_IS_RAM if
|
||||
* you want RAM pointers.
|
||||
* + USB_PROP_IS_RAM: The data returned by usbFunctionDescriptor() or found
|
||||
* in static memory is in RAM, not in flash memory.
|
||||
* + USB_PROP_LENGTH(len): If the data is in static memory (RAM or flash),
|
||||
* the driver must know the descriptor's length. The descriptor itself is
|
||||
* found at the address of a well known identifier (see below).
|
||||
* List of static descriptor names (must be declared PROGMEM if in flash):
|
||||
* char usbDescriptorDevice[];
|
||||
* char usbDescriptorConfiguration[];
|
||||
* char usbDescriptorHidReport[];
|
||||
* char usbDescriptorString0[];
|
||||
* int usbDescriptorStringVendor[];
|
||||
* int usbDescriptorStringDevice[];
|
||||
* int usbDescriptorStringSerialNumber[];
|
||||
* Other descriptors can't be provided statically, they must be provided
|
||||
* dynamically at runtime.
|
||||
*
|
||||
* Descriptor properties are or-ed or added together, e.g.:
|
||||
* #define USB_CFG_DESCR_PROPS_DEVICE (USB_PROP_IS_RAM | USB_PROP_LENGTH(18))
|
||||
*
|
||||
* The following descriptors are defined:
|
||||
* USB_CFG_DESCR_PROPS_DEVICE
|
||||
* USB_CFG_DESCR_PROPS_CONFIGURATION
|
||||
* USB_CFG_DESCR_PROPS_STRINGS
|
||||
* USB_CFG_DESCR_PROPS_STRING_0
|
||||
* USB_CFG_DESCR_PROPS_STRING_VENDOR
|
||||
* USB_CFG_DESCR_PROPS_STRING_PRODUCT
|
||||
* USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER
|
||||
* USB_CFG_DESCR_PROPS_HID
|
||||
* USB_CFG_DESCR_PROPS_HID_REPORT
|
||||
* USB_CFG_DESCR_PROPS_UNKNOWN (for all descriptors not handled by the driver)
|
||||
*
|
||||
* Note about string descriptors: String descriptors are not just strings, they
|
||||
* are Unicode strings prefixed with a 2 byte header. Example:
|
||||
* int serialNumberDescriptor[] = {
|
||||
* USB_STRING_DESCRIPTOR_HEADER(6),
|
||||
* 'S', 'e', 'r', 'i', 'a', 'l'
|
||||
* };
|
||||
*/
|
||||
|
||||
#define USB_CFG_DESCR_PROPS_DEVICE 0
|
||||
#define USB_CFG_DESCR_PROPS_CONFIGURATION 0
|
||||
#define USB_CFG_DESCR_PROPS_STRINGS 0
|
||||
#define USB_CFG_DESCR_PROPS_STRING_0 0
|
||||
#define USB_CFG_DESCR_PROPS_STRING_VENDOR 0
|
||||
#define USB_CFG_DESCR_PROPS_STRING_PRODUCT 0
|
||||
#define USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER 0
|
||||
#define USB_CFG_DESCR_PROPS_HID 0
|
||||
#define USB_CFG_DESCR_PROPS_HID_REPORT 0
|
||||
#define USB_CFG_DESCR_PROPS_UNKNOWN 0
|
||||
|
||||
|
||||
#define usbMsgPtr_t unsigned short
|
||||
/* If usbMsgPtr_t is not defined, it defaults to 'uchar *'. We define it to
|
||||
* a scalar type here because gcc generates slightly shorter code for scalar
|
||||
* arithmetics than for pointer arithmetics. Remove this define for backward
|
||||
* type compatibility or define it to an 8 bit type if you use data in RAM only
|
||||
* and all RAM is below 256 bytes (tiny memory model in IAR CC).
|
||||
*/
|
||||
|
||||
/* ----------------------- Optional MCU Description ------------------------ */
|
||||
|
||||
/* The following configurations have working defaults in usbdrv.h. You
|
||||
* usually don't need to set them explicitly. Only if you want to run
|
||||
* the driver on a device which is not yet supported or with a compiler
|
||||
* which is not fully supported (such as IAR C) or if you use a differnt
|
||||
* interrupt than INT0, you may have to define some of these.
|
||||
*/
|
||||
/* #define USB_INTR_CFG MCUCR */
|
||||
/* #define USB_INTR_CFG_SET ((1 << ISC00) | (1 << ISC01)) */
|
||||
/* #define USB_INTR_CFG_CLR 0 */
|
||||
/* #define USB_INTR_ENABLE GIMSK */
|
||||
/* #define USB_INTR_ENABLE_BIT INT0 */
|
||||
/* #define USB_INTR_PENDING GIFR */
|
||||
/* #define USB_INTR_PENDING_BIT INTF0 */
|
||||
/* #define USB_INTR_VECTOR INT0_vect */
|
||||
|
||||
#endif /* __usbconfig_h_included__ */
|
||||
628
usbdrv/usbdrv.c
Normal file
628
usbdrv/usbdrv.c
Normal file
@ -0,0 +1,628 @@
|
||||
/* Name: usbdrv.c
|
||||
* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
|
||||
* Author: Christian Starkjohann
|
||||
* Creation Date: 2004-12-29
|
||||
* Tabsize: 4
|
||||
* Copyright: (c) 2005 by OBJECTIVE DEVELOPMENT Software GmbH
|
||||
* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
|
||||
*/
|
||||
|
||||
#include "usbdrv.h"
|
||||
#include "oddebug.h"
|
||||
|
||||
/*
|
||||
General Description:
|
||||
This module implements the C-part of the USB driver. See usbdrv.h for a
|
||||
documentation of the entire driver.
|
||||
*/
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
|
||||
/* raw USB registers / interface to assembler code: */
|
||||
uchar usbRxBuf[2*USB_BUFSIZE]; /* raw RX buffer: PID, 8 bytes data, 2 bytes CRC */
|
||||
uchar usbInputBufOffset; /* offset in usbRxBuf used for low level receiving */
|
||||
uchar usbDeviceAddr; /* assigned during enumeration, defaults to 0 */
|
||||
uchar usbNewDeviceAddr; /* device ID which should be set after status phase */
|
||||
uchar usbConfiguration; /* currently selected configuration. Administered by driver, but not used */
|
||||
volatile schar usbRxLen; /* = 0; number of bytes in usbRxBuf; 0 means free, -1 for flow control */
|
||||
uchar usbCurrentTok; /* last token received or endpoint number for last OUT token if != 0 */
|
||||
uchar usbRxToken; /* token for data we received; or endpont number for last OUT */
|
||||
volatile uchar usbTxLen = USBPID_NAK; /* number of bytes to transmit with next IN token or handshake token */
|
||||
uchar usbTxBuf[USB_BUFSIZE];/* data to transmit with next IN, free if usbTxLen contains handshake token */
|
||||
#if USB_COUNT_SOF
|
||||
volatile uchar usbSofCount; /* incremented by assembler module every SOF */
|
||||
#endif
|
||||
#if USB_CFG_HAVE_INTRIN_ENDPOINT && !USB_CFG_SUPPRESS_INTR_CODE
|
||||
usbTxStatus_t usbTxStatus1;
|
||||
# if USB_CFG_HAVE_INTRIN_ENDPOINT3
|
||||
usbTxStatus_t usbTxStatus3;
|
||||
# endif
|
||||
#endif
|
||||
#if USB_CFG_CHECK_DATA_TOGGLING
|
||||
uchar usbCurrentDataToken;/* when we check data toggling to ignore duplicate packets */
|
||||
#endif
|
||||
|
||||
/* USB status registers / not shared with asm code */
|
||||
usbMsgPtr_t usbMsgPtr; /* data to transmit next -- ROM or RAM address */
|
||||
static usbMsgLen_t usbMsgLen = USB_NO_MSG; /* remaining number of bytes */
|
||||
static uchar usbMsgFlags; /* flag values see below */
|
||||
|
||||
#define USB_FLG_MSGPTR_IS_ROM (1<<6)
|
||||
#define USB_FLG_USE_USER_RW (1<<7)
|
||||
|
||||
/*
|
||||
optimizing hints:
|
||||
- do not post/pre inc/dec integer values in operations
|
||||
- assign value of USB_READ_FLASH() to register variables and don't use side effects in arg
|
||||
- use narrow scope for variables which should be in X/Y/Z register
|
||||
- assign char sized expressions to variables to force 8 bit arithmetics
|
||||
*/
|
||||
|
||||
/* -------------------------- String Descriptors --------------------------- */
|
||||
|
||||
#if USB_CFG_DESCR_PROPS_STRINGS == 0
|
||||
|
||||
#if USB_CFG_DESCR_PROPS_STRING_0 == 0
|
||||
#undef USB_CFG_DESCR_PROPS_STRING_0
|
||||
#define USB_CFG_DESCR_PROPS_STRING_0 sizeof(usbDescriptorString0)
|
||||
PROGMEM const char usbDescriptorString0[] = { /* language descriptor */
|
||||
4, /* sizeof(usbDescriptorString0): length of descriptor in bytes */
|
||||
3, /* descriptor type */
|
||||
0x09, 0x04, /* language index (0x0409 = US-English) */
|
||||
};
|
||||
#endif
|
||||
|
||||
#if USB_CFG_DESCR_PROPS_STRING_VENDOR == 0 && USB_CFG_VENDOR_NAME_LEN
|
||||
#undef USB_CFG_DESCR_PROPS_STRING_VENDOR
|
||||
#define USB_CFG_DESCR_PROPS_STRING_VENDOR sizeof(usbDescriptorStringVendor)
|
||||
PROGMEM const int usbDescriptorStringVendor[] = {
|
||||
USB_STRING_DESCRIPTOR_HEADER(USB_CFG_VENDOR_NAME_LEN),
|
||||
USB_CFG_VENDOR_NAME
|
||||
};
|
||||
#endif
|
||||
|
||||
#if USB_CFG_DESCR_PROPS_STRING_PRODUCT == 0 && USB_CFG_DEVICE_NAME_LEN
|
||||
#undef USB_CFG_DESCR_PROPS_STRING_PRODUCT
|
||||
#define USB_CFG_DESCR_PROPS_STRING_PRODUCT sizeof(usbDescriptorStringDevice)
|
||||
PROGMEM const int usbDescriptorStringDevice[] = {
|
||||
USB_STRING_DESCRIPTOR_HEADER(USB_CFG_DEVICE_NAME_LEN),
|
||||
USB_CFG_DEVICE_NAME
|
||||
};
|
||||
#endif
|
||||
|
||||
#if USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER == 0 && USB_CFG_SERIAL_NUMBER_LEN
|
||||
#undef USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER
|
||||
#define USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER sizeof(usbDescriptorStringSerialNumber)
|
||||
PROGMEM const int usbDescriptorStringSerialNumber[] = {
|
||||
USB_STRING_DESCRIPTOR_HEADER(USB_CFG_SERIAL_NUMBER_LEN),
|
||||
USB_CFG_SERIAL_NUMBER
|
||||
};
|
||||
#endif
|
||||
|
||||
#endif /* USB_CFG_DESCR_PROPS_STRINGS == 0 */
|
||||
|
||||
/* --------------------------- Device Descriptor --------------------------- */
|
||||
|
||||
#if USB_CFG_DESCR_PROPS_DEVICE == 0
|
||||
#undef USB_CFG_DESCR_PROPS_DEVICE
|
||||
#define USB_CFG_DESCR_PROPS_DEVICE sizeof(usbDescriptorDevice)
|
||||
PROGMEM const char usbDescriptorDevice[] = { /* USB device descriptor */
|
||||
18, /* sizeof(usbDescriptorDevice): length of descriptor in bytes */
|
||||
USBDESCR_DEVICE, /* descriptor type */
|
||||
0x10, 0x01, /* USB version supported */
|
||||
USB_CFG_DEVICE_CLASS,
|
||||
USB_CFG_DEVICE_SUBCLASS,
|
||||
0, /* protocol */
|
||||
8, /* max packet size */
|
||||
/* the following two casts affect the first byte of the constant only, but
|
||||
* that's sufficient to avoid a warning with the default values.
|
||||
*/
|
||||
(char)USB_CFG_VENDOR_ID,/* 2 bytes */
|
||||
(char)USB_CFG_DEVICE_ID,/* 2 bytes */
|
||||
USB_CFG_DEVICE_VERSION, /* 2 bytes */
|
||||
USB_CFG_DESCR_PROPS_STRING_VENDOR != 0 ? 1 : 0, /* manufacturer string index */
|
||||
USB_CFG_DESCR_PROPS_STRING_PRODUCT != 0 ? 2 : 0, /* product string index */
|
||||
USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER != 0 ? 3 : 0, /* serial number string index */
|
||||
1, /* number of configurations */
|
||||
};
|
||||
#endif
|
||||
|
||||
/* ----------------------- Configuration Descriptor ------------------------ */
|
||||
|
||||
#if USB_CFG_DESCR_PROPS_HID_REPORT != 0 && USB_CFG_DESCR_PROPS_HID == 0
|
||||
#undef USB_CFG_DESCR_PROPS_HID
|
||||
#define USB_CFG_DESCR_PROPS_HID 9 /* length of HID descriptor in config descriptor below */
|
||||
#endif
|
||||
|
||||
#if USB_CFG_DESCR_PROPS_CONFIGURATION == 0
|
||||
#undef USB_CFG_DESCR_PROPS_CONFIGURATION
|
||||
#define USB_CFG_DESCR_PROPS_CONFIGURATION sizeof(usbDescriptorConfiguration)
|
||||
PROGMEM const char usbDescriptorConfiguration[] = { /* USB configuration descriptor */
|
||||
9, /* sizeof(usbDescriptorConfiguration): length of descriptor in bytes */
|
||||
USBDESCR_CONFIG, /* descriptor type */
|
||||
18 + 7 * USB_CFG_HAVE_INTRIN_ENDPOINT + 7 * USB_CFG_HAVE_INTRIN_ENDPOINT3 +
|
||||
(USB_CFG_DESCR_PROPS_HID & 0xff), 0,
|
||||
/* total length of data returned (including inlined descriptors) */
|
||||
1, /* number of interfaces in this configuration */
|
||||
1, /* index of this configuration */
|
||||
0, /* configuration name string index */
|
||||
#if USB_CFG_IS_SELF_POWERED
|
||||
(1 << 7) | USBATTR_SELFPOWER, /* attributes */
|
||||
#else
|
||||
(1 << 7), /* attributes */
|
||||
#endif
|
||||
USB_CFG_MAX_BUS_POWER/2, /* max USB current in 2mA units */
|
||||
/* interface descriptor follows inline: */
|
||||
9, /* sizeof(usbDescrInterface): length of descriptor in bytes */
|
||||
USBDESCR_INTERFACE, /* descriptor type */
|
||||
0, /* index of this interface */
|
||||
0, /* alternate setting for this interface */
|
||||
USB_CFG_HAVE_INTRIN_ENDPOINT + USB_CFG_HAVE_INTRIN_ENDPOINT3, /* endpoints excl 0: number of endpoint descriptors to follow */
|
||||
USB_CFG_INTERFACE_CLASS,
|
||||
USB_CFG_INTERFACE_SUBCLASS,
|
||||
USB_CFG_INTERFACE_PROTOCOL,
|
||||
0, /* string index for interface */
|
||||
#if (USB_CFG_DESCR_PROPS_HID & 0xff) /* HID descriptor */
|
||||
9, /* sizeof(usbDescrHID): length of descriptor in bytes */
|
||||
USBDESCR_HID, /* descriptor type: HID */
|
||||
0x01, 0x01, /* BCD representation of HID version */
|
||||
0x00, /* target country code */
|
||||
0x01, /* number of HID Report (or other HID class) Descriptor infos to follow */
|
||||
0x22, /* descriptor type: report */
|
||||
USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH, 0, /* total length of report descriptor */
|
||||
#endif
|
||||
#if USB_CFG_HAVE_INTRIN_ENDPOINT /* endpoint descriptor for endpoint 1 */
|
||||
7, /* sizeof(usbDescrEndpoint) */
|
||||
USBDESCR_ENDPOINT, /* descriptor type = endpoint */
|
||||
(char)0x81, /* IN endpoint number 1 */
|
||||
0x03, /* attrib: Interrupt endpoint */
|
||||
8, 0, /* maximum packet size */
|
||||
USB_CFG_INTR_POLL_INTERVAL, /* in ms */
|
||||
#endif
|
||||
#if USB_CFG_HAVE_INTRIN_ENDPOINT3 /* endpoint descriptor for endpoint 3 */
|
||||
7, /* sizeof(usbDescrEndpoint) */
|
||||
USBDESCR_ENDPOINT, /* descriptor type = endpoint */
|
||||
(char)(0x80 | USB_CFG_EP3_NUMBER), /* IN endpoint number 3 */
|
||||
0x03, /* attrib: Interrupt endpoint */
|
||||
8, 0, /* maximum packet size */
|
||||
USB_CFG_INTR_POLL_INTERVAL, /* in ms */
|
||||
#endif
|
||||
};
|
||||
#endif
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
|
||||
static inline void usbResetDataToggling(void)
|
||||
{
|
||||
#if USB_CFG_HAVE_INTRIN_ENDPOINT && !USB_CFG_SUPPRESS_INTR_CODE
|
||||
USB_SET_DATATOKEN1(USB_INITIAL_DATATOKEN); /* reset data toggling for interrupt endpoint */
|
||||
# if USB_CFG_HAVE_INTRIN_ENDPOINT3
|
||||
USB_SET_DATATOKEN3(USB_INITIAL_DATATOKEN); /* reset data toggling for interrupt endpoint */
|
||||
# endif
|
||||
#endif
|
||||
}
|
||||
|
||||
static inline void usbResetStall(void)
|
||||
{
|
||||
#if USB_CFG_IMPLEMENT_HALT && USB_CFG_HAVE_INTRIN_ENDPOINT
|
||||
usbTxLen1 = USBPID_NAK;
|
||||
#if USB_CFG_HAVE_INTRIN_ENDPOINT3
|
||||
usbTxLen3 = USBPID_NAK;
|
||||
#endif
|
||||
#endif
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
|
||||
#if !USB_CFG_SUPPRESS_INTR_CODE
|
||||
#if USB_CFG_HAVE_INTRIN_ENDPOINT
|
||||
static void usbGenericSetInterrupt(uchar *data, uchar len, usbTxStatus_t *txStatus)
|
||||
{
|
||||
uchar *p;
|
||||
char i;
|
||||
|
||||
#if USB_CFG_IMPLEMENT_HALT
|
||||
if(usbTxLen1 == USBPID_STALL)
|
||||
return;
|
||||
#endif
|
||||
if(txStatus->len & 0x10){ /* packet buffer was empty */
|
||||
txStatus->buffer[0] ^= USBPID_DATA0 ^ USBPID_DATA1; /* toggle token */
|
||||
}else{
|
||||
txStatus->len = USBPID_NAK; /* avoid sending outdated (overwritten) interrupt data */
|
||||
}
|
||||
p = txStatus->buffer + 1;
|
||||
i = len;
|
||||
do{ /* if len == 0, we still copy 1 byte, but that's no problem */
|
||||
*p++ = *data++;
|
||||
}while(--i > 0); /* loop control at the end is 2 bytes shorter than at beginning */
|
||||
usbCrc16Append(&txStatus->buffer[1], len);
|
||||
txStatus->len = len + 4; /* len must be given including sync byte */
|
||||
DBG2(0x21 + (((int)txStatus >> 3) & 3), txStatus->buffer, len + 3);
|
||||
}
|
||||
|
||||
USB_PUBLIC void usbSetInterrupt(uchar *data, uchar len)
|
||||
{
|
||||
usbGenericSetInterrupt(data, len, &usbTxStatus1);
|
||||
}
|
||||
#endif
|
||||
|
||||
#if USB_CFG_HAVE_INTRIN_ENDPOINT3
|
||||
USB_PUBLIC void usbSetInterrupt3(uchar *data, uchar len)
|
||||
{
|
||||
usbGenericSetInterrupt(data, len, &usbTxStatus3);
|
||||
}
|
||||
#endif
|
||||
#endif /* USB_CFG_SUPPRESS_INTR_CODE */
|
||||
|
||||
/* ------------------ utilities for code following below ------------------- */
|
||||
|
||||
/* Use defines for the switch statement so that we can choose between an
|
||||
* if()else if() and a switch/case based implementation. switch() is more
|
||||
* efficient for a LARGE set of sequential choices, if() is better in all other
|
||||
* cases.
|
||||
*/
|
||||
#if USB_CFG_USE_SWITCH_STATEMENT
|
||||
# define SWITCH_START(cmd) switch(cmd){{
|
||||
# define SWITCH_CASE(value) }break; case (value):{
|
||||
# define SWITCH_CASE2(v1,v2) }break; case (v1): case(v2):{
|
||||
# define SWITCH_CASE3(v1,v2,v3) }break; case (v1): case(v2): case(v3):{
|
||||
# define SWITCH_DEFAULT }break; default:{
|
||||
# define SWITCH_END }}
|
||||
#else
|
||||
# define SWITCH_START(cmd) {uchar _cmd = cmd; if(0){
|
||||
# define SWITCH_CASE(value) }else if(_cmd == (value)){
|
||||
# define SWITCH_CASE2(v1,v2) }else if(_cmd == (v1) || _cmd == (v2)){
|
||||
# define SWITCH_CASE3(v1,v2,v3) }else if(_cmd == (v1) || _cmd == (v2) || (_cmd == v3)){
|
||||
# define SWITCH_DEFAULT }else{
|
||||
# define SWITCH_END }}
|
||||
#endif
|
||||
|
||||
#ifndef USB_RX_USER_HOOK
|
||||
#define USB_RX_USER_HOOK(data, len)
|
||||
#endif
|
||||
#ifndef USB_SET_ADDRESS_HOOK
|
||||
#define USB_SET_ADDRESS_HOOK()
|
||||
#endif
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
|
||||
/* We use if() instead of #if in the macro below because #if can't be used
|
||||
* in macros and the compiler optimizes constant conditions anyway.
|
||||
* This may cause problems with undefined symbols if compiled without
|
||||
* optimizing!
|
||||
*/
|
||||
#define GET_DESCRIPTOR(cfgProp, staticName) \
|
||||
if(cfgProp){ \
|
||||
if((cfgProp) & USB_PROP_IS_RAM) \
|
||||
flags = 0; \
|
||||
if((cfgProp) & USB_PROP_IS_DYNAMIC){ \
|
||||
len = usbFunctionDescriptor(rq); \
|
||||
}else{ \
|
||||
len = USB_PROP_LENGTH(cfgProp); \
|
||||
usbMsgPtr = (usbMsgPtr_t)(staticName); \
|
||||
} \
|
||||
}
|
||||
|
||||
/* usbDriverDescriptor() is similar to usbFunctionDescriptor(), but used
|
||||
* internally for all types of descriptors.
|
||||
*/
|
||||
static inline usbMsgLen_t usbDriverDescriptor(usbRequest_t *rq)
|
||||
{
|
||||
usbMsgLen_t len = 0;
|
||||
uchar flags = USB_FLG_MSGPTR_IS_ROM;
|
||||
|
||||
SWITCH_START(rq->wValue.bytes[1])
|
||||
SWITCH_CASE(USBDESCR_DEVICE) /* 1 */
|
||||
GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_DEVICE, usbDescriptorDevice)
|
||||
SWITCH_CASE(USBDESCR_CONFIG) /* 2 */
|
||||
GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_CONFIGURATION, usbDescriptorConfiguration)
|
||||
SWITCH_CASE(USBDESCR_STRING) /* 3 */
|
||||
#if USB_CFG_DESCR_PROPS_STRINGS & USB_PROP_IS_DYNAMIC
|
||||
if(USB_CFG_DESCR_PROPS_STRINGS & USB_PROP_IS_RAM)
|
||||
flags = 0;
|
||||
len = usbFunctionDescriptor(rq);
|
||||
#else /* USB_CFG_DESCR_PROPS_STRINGS & USB_PROP_IS_DYNAMIC */
|
||||
SWITCH_START(rq->wValue.bytes[0])
|
||||
SWITCH_CASE(0)
|
||||
GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_STRING_0, usbDescriptorString0)
|
||||
SWITCH_CASE(1)
|
||||
GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_STRING_VENDOR, usbDescriptorStringVendor)
|
||||
SWITCH_CASE(2)
|
||||
GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_STRING_PRODUCT, usbDescriptorStringDevice)
|
||||
SWITCH_CASE(3)
|
||||
GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER, usbDescriptorStringSerialNumber)
|
||||
SWITCH_DEFAULT
|
||||
if(USB_CFG_DESCR_PROPS_UNKNOWN & USB_PROP_IS_DYNAMIC){
|
||||
len = usbFunctionDescriptor(rq);
|
||||
}
|
||||
SWITCH_END
|
||||
#endif /* USB_CFG_DESCR_PROPS_STRINGS & USB_PROP_IS_DYNAMIC */
|
||||
#if USB_CFG_DESCR_PROPS_HID_REPORT /* only support HID descriptors if enabled */
|
||||
SWITCH_CASE(USBDESCR_HID) /* 0x21 */
|
||||
GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_HID, usbDescriptorConfiguration + 18)
|
||||
SWITCH_CASE(USBDESCR_HID_REPORT)/* 0x22 */
|
||||
GET_DESCRIPTOR(USB_CFG_DESCR_PROPS_HID_REPORT, usbDescriptorHidReport)
|
||||
#endif
|
||||
SWITCH_DEFAULT
|
||||
if(USB_CFG_DESCR_PROPS_UNKNOWN & USB_PROP_IS_DYNAMIC){
|
||||
len = usbFunctionDescriptor(rq);
|
||||
}
|
||||
SWITCH_END
|
||||
usbMsgFlags = flags;
|
||||
return len;
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
|
||||
/* usbDriverSetup() is similar to usbFunctionSetup(), but it's used for
|
||||
* standard requests instead of class and custom requests.
|
||||
*/
|
||||
static inline usbMsgLen_t usbDriverSetup(usbRequest_t *rq)
|
||||
{
|
||||
usbMsgLen_t len = 0;
|
||||
uchar *dataPtr = usbTxBuf + 9; /* there are 2 bytes free space at the end of the buffer */
|
||||
uchar value = rq->wValue.bytes[0];
|
||||
#if USB_CFG_IMPLEMENT_HALT
|
||||
uchar index = rq->wIndex.bytes[0];
|
||||
#endif
|
||||
|
||||
dataPtr[0] = 0; /* default reply common to USBRQ_GET_STATUS and USBRQ_GET_INTERFACE */
|
||||
SWITCH_START(rq->bRequest)
|
||||
SWITCH_CASE(USBRQ_GET_STATUS) /* 0 */
|
||||
uchar recipient = rq->bmRequestType & USBRQ_RCPT_MASK; /* assign arith ops to variables to enforce byte size */
|
||||
if(USB_CFG_IS_SELF_POWERED && recipient == USBRQ_RCPT_DEVICE)
|
||||
dataPtr[0] = USB_CFG_IS_SELF_POWERED;
|
||||
#if USB_CFG_IMPLEMENT_HALT
|
||||
if(recipient == USBRQ_RCPT_ENDPOINT && index == 0x81) /* request status for endpoint 1 */
|
||||
dataPtr[0] = usbTxLen1 == USBPID_STALL;
|
||||
#endif
|
||||
dataPtr[1] = 0;
|
||||
len = 2;
|
||||
#if USB_CFG_IMPLEMENT_HALT
|
||||
SWITCH_CASE2(USBRQ_CLEAR_FEATURE, USBRQ_SET_FEATURE) /* 1, 3 */
|
||||
if(value == 0 && index == 0x81){ /* feature 0 == HALT for endpoint == 1 */
|
||||
usbTxLen1 = rq->bRequest == USBRQ_CLEAR_FEATURE ? USBPID_NAK : USBPID_STALL;
|
||||
usbResetDataToggling();
|
||||
}
|
||||
#endif
|
||||
SWITCH_CASE(USBRQ_SET_ADDRESS) /* 5 */
|
||||
usbNewDeviceAddr = value;
|
||||
USB_SET_ADDRESS_HOOK();
|
||||
SWITCH_CASE(USBRQ_GET_DESCRIPTOR) /* 6 */
|
||||
len = usbDriverDescriptor(rq);
|
||||
goto skipMsgPtrAssignment;
|
||||
SWITCH_CASE(USBRQ_GET_CONFIGURATION) /* 8 */
|
||||
dataPtr = &usbConfiguration; /* send current configuration value */
|
||||
len = 1;
|
||||
SWITCH_CASE(USBRQ_SET_CONFIGURATION) /* 9 */
|
||||
usbConfiguration = value;
|
||||
usbResetStall();
|
||||
SWITCH_CASE(USBRQ_GET_INTERFACE) /* 10 */
|
||||
len = 1;
|
||||
#if USB_CFG_HAVE_INTRIN_ENDPOINT && !USB_CFG_SUPPRESS_INTR_CODE
|
||||
SWITCH_CASE(USBRQ_SET_INTERFACE) /* 11 */
|
||||
usbResetDataToggling();
|
||||
usbResetStall();
|
||||
#endif
|
||||
SWITCH_DEFAULT /* 7=SET_DESCRIPTOR, 12=SYNC_FRAME */
|
||||
/* Should we add an optional hook here? */
|
||||
SWITCH_END
|
||||
usbMsgPtr = (usbMsgPtr_t)dataPtr;
|
||||
skipMsgPtrAssignment:
|
||||
return len;
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
|
||||
/* usbProcessRx() is called for every message received by the interrupt
|
||||
* routine. It distinguishes between SETUP and DATA packets and processes
|
||||
* them accordingly.
|
||||
*/
|
||||
static inline void usbProcessRx(uchar *data, uchar len)
|
||||
{
|
||||
usbRequest_t *rq = (void *)data;
|
||||
|
||||
/* usbRxToken can be:
|
||||
* 0x2d 00101101 (USBPID_SETUP for setup data)
|
||||
* 0xe1 11100001 (USBPID_OUT: data phase of setup transfer)
|
||||
* 0...0x0f for OUT on endpoint X
|
||||
*/
|
||||
DBG2(0x10 + (usbRxToken & 0xf), data, len + 2); /* SETUP=1d, SETUP-DATA=11, OUTx=1x */
|
||||
USB_RX_USER_HOOK(data, len)
|
||||
#if USB_CFG_IMPLEMENT_FN_WRITEOUT
|
||||
if(usbRxToken < 0x10){ /* OUT to endpoint != 0: endpoint number in usbRxToken */
|
||||
usbFunctionWriteOut(data, len);
|
||||
return;
|
||||
}
|
||||
#endif
|
||||
if(usbRxToken == (uchar)USBPID_SETUP){
|
||||
if(len != 8) /* Setup size must be always 8 bytes. Ignore otherwise. */
|
||||
return;
|
||||
usbMsgLen_t replyLen;
|
||||
usbTxBuf[0] = USBPID_DATA0; /* initialize data toggling */
|
||||
usbTxLen = USBPID_NAK; /* abort pending transmit */
|
||||
usbMsgFlags = 0;
|
||||
uchar type = rq->bmRequestType & USBRQ_TYPE_MASK;
|
||||
if(type != USBRQ_TYPE_STANDARD){ /* standard requests are handled by driver */
|
||||
replyLen = usbFunctionSetup(data);
|
||||
}else{
|
||||
replyLen = usbDriverSetup(rq);
|
||||
}
|
||||
#if USB_CFG_IMPLEMENT_FN_READ || USB_CFG_IMPLEMENT_FN_WRITE
|
||||
if(replyLen == USB_NO_MSG){ /* use user-supplied read/write function */
|
||||
/* do some conditioning on replyLen, but on IN transfers only */
|
||||
if((rq->bmRequestType & USBRQ_DIR_MASK) != USBRQ_DIR_HOST_TO_DEVICE){
|
||||
if(sizeof(replyLen) < sizeof(rq->wLength.word)){ /* help compiler with optimizing */
|
||||
replyLen = rq->wLength.bytes[0];
|
||||
}else{
|
||||
replyLen = rq->wLength.word;
|
||||
}
|
||||
}
|
||||
usbMsgFlags = USB_FLG_USE_USER_RW;
|
||||
}else /* The 'else' prevents that we limit a replyLen of USB_NO_MSG to the maximum transfer len. */
|
||||
#endif
|
||||
if(sizeof(replyLen) < sizeof(rq->wLength.word)){ /* help compiler with optimizing */
|
||||
if(!rq->wLength.bytes[1] && replyLen > rq->wLength.bytes[0]) /* limit length to max */
|
||||
replyLen = rq->wLength.bytes[0];
|
||||
}else{
|
||||
if(replyLen > rq->wLength.word) /* limit length to max */
|
||||
replyLen = rq->wLength.word;
|
||||
}
|
||||
usbMsgLen = replyLen;
|
||||
}else{ /* usbRxToken must be USBPID_OUT, which means data phase of setup (control-out) */
|
||||
#if USB_CFG_IMPLEMENT_FN_WRITE
|
||||
if(usbMsgFlags & USB_FLG_USE_USER_RW){
|
||||
uchar rval = usbFunctionWrite(data, len);
|
||||
if(rval == 0xff){ /* an error occurred */
|
||||
usbTxLen = USBPID_STALL;
|
||||
}else if(rval != 0){ /* This was the final package */
|
||||
usbMsgLen = 0; /* answer with a zero-sized data packet */
|
||||
}
|
||||
}
|
||||
#endif
|
||||
}
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
|
||||
/* This function is similar to usbFunctionRead(), but it's also called for
|
||||
* data handled automatically by the driver (e.g. descriptor reads).
|
||||
*/
|
||||
static uchar usbDeviceRead(uchar *data, uchar len)
|
||||
{
|
||||
if(len > 0){ /* don't bother app with 0 sized reads */
|
||||
#if USB_CFG_IMPLEMENT_FN_READ
|
||||
if(usbMsgFlags & USB_FLG_USE_USER_RW){
|
||||
len = usbFunctionRead(data, len);
|
||||
}else
|
||||
#endif
|
||||
{
|
||||
uchar i = len;
|
||||
usbMsgPtr_t r = usbMsgPtr;
|
||||
if(usbMsgFlags & USB_FLG_MSGPTR_IS_ROM){ /* ROM data */
|
||||
do{
|
||||
uchar c = USB_READ_FLASH(r); /* assign to char size variable to enforce byte ops */
|
||||
*data++ = c;
|
||||
r++;
|
||||
}while(--i);
|
||||
}else{ /* RAM data */
|
||||
do{
|
||||
*data++ = *((uchar *)r);
|
||||
r++;
|
||||
}while(--i);
|
||||
}
|
||||
usbMsgPtr = r;
|
||||
}
|
||||
}
|
||||
return len;
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
|
||||
/* usbBuildTxBlock() is called when we have data to transmit and the
|
||||
* interrupt routine's transmit buffer is empty.
|
||||
*/
|
||||
static inline void usbBuildTxBlock(void)
|
||||
{
|
||||
usbMsgLen_t wantLen;
|
||||
uchar len;
|
||||
|
||||
wantLen = usbMsgLen;
|
||||
if(wantLen > 8)
|
||||
wantLen = 8;
|
||||
usbMsgLen -= wantLen;
|
||||
usbTxBuf[0] ^= USBPID_DATA0 ^ USBPID_DATA1; /* DATA toggling */
|
||||
len = usbDeviceRead(usbTxBuf + 1, wantLen);
|
||||
if(len <= 8){ /* valid data packet */
|
||||
usbCrc16Append(&usbTxBuf[1], len);
|
||||
len += 4; /* length including sync byte */
|
||||
if(len < 12) /* a partial package identifies end of message */
|
||||
usbMsgLen = USB_NO_MSG;
|
||||
}else{
|
||||
len = USBPID_STALL; /* stall the endpoint */
|
||||
usbMsgLen = USB_NO_MSG;
|
||||
}
|
||||
usbTxLen = len;
|
||||
DBG2(0x20, usbTxBuf, len-1);
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
|
||||
static inline void usbHandleResetHook(uchar notResetState)
|
||||
{
|
||||
#ifdef USB_RESET_HOOK
|
||||
static uchar wasReset;
|
||||
uchar isReset = !notResetState;
|
||||
|
||||
if(wasReset != isReset){
|
||||
USB_RESET_HOOK(isReset);
|
||||
wasReset = isReset;
|
||||
}
|
||||
#else
|
||||
notResetState = notResetState; // avoid compiler warning
|
||||
#endif
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
|
||||
USB_PUBLIC void usbPoll(void)
|
||||
{
|
||||
schar len;
|
||||
uchar i;
|
||||
|
||||
len = usbRxLen - 3;
|
||||
if(len >= 0){
|
||||
/* We could check CRC16 here -- but ACK has already been sent anyway. If you
|
||||
* need data integrity checks with this driver, check the CRC in your app
|
||||
* code and report errors back to the host. Since the ACK was already sent,
|
||||
* retries must be handled on application level.
|
||||
* unsigned crc = usbCrc16(buffer + 1, usbRxLen - 3);
|
||||
*/
|
||||
usbProcessRx(usbRxBuf + USB_BUFSIZE + 1 - usbInputBufOffset, len);
|
||||
#if USB_CFG_HAVE_FLOWCONTROL
|
||||
if(usbRxLen > 0) /* only mark as available if not inactivated */
|
||||
usbRxLen = 0;
|
||||
#else
|
||||
usbRxLen = 0; /* mark rx buffer as available */
|
||||
#endif
|
||||
}
|
||||
if(usbTxLen & 0x10){ /* transmit system idle */
|
||||
if(usbMsgLen != USB_NO_MSG){ /* transmit data pending? */
|
||||
usbBuildTxBlock();
|
||||
}
|
||||
}
|
||||
for(i = 20; i > 0; i--){
|
||||
uchar usbLineStatus = USBIN & USBMASK;
|
||||
if(usbLineStatus != 0) /* SE0 has ended */
|
||||
goto isNotReset;
|
||||
}
|
||||
/* RESET condition, called multiple times during reset */
|
||||
usbNewDeviceAddr = 0;
|
||||
usbDeviceAddr = 0;
|
||||
usbResetStall();
|
||||
DBG1(0xff, 0, 0);
|
||||
isNotReset:
|
||||
usbHandleResetHook(i);
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
|
||||
USB_PUBLIC void usbInit(void)
|
||||
{
|
||||
#if USB_INTR_CFG_SET != 0
|
||||
USB_INTR_CFG |= USB_INTR_CFG_SET;
|
||||
#endif
|
||||
#if USB_INTR_CFG_CLR != 0
|
||||
USB_INTR_CFG &= ~(USB_INTR_CFG_CLR);
|
||||
#endif
|
||||
USB_INTR_ENABLE |= (1 << USB_INTR_ENABLE_BIT);
|
||||
usbResetDataToggling();
|
||||
#if USB_CFG_HAVE_INTRIN_ENDPOINT && !USB_CFG_SUPPRESS_INTR_CODE
|
||||
usbTxLen1 = USBPID_NAK;
|
||||
#if USB_CFG_HAVE_INTRIN_ENDPOINT3
|
||||
usbTxLen3 = USBPID_NAK;
|
||||
#endif
|
||||
#endif
|
||||
}
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
746
usbdrv/usbdrv.h
Normal file
746
usbdrv/usbdrv.h
Normal file
@ -0,0 +1,746 @@
|
||||
/* Name: usbdrv.h
|
||||
* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
|
||||
* Author: Christian Starkjohann
|
||||
* Creation Date: 2004-12-29
|
||||
* Tabsize: 4
|
||||
* Copyright: (c) 2005 by OBJECTIVE DEVELOPMENT Software GmbH
|
||||
* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
|
||||
*/
|
||||
|
||||
#ifndef __usbdrv_h_included__
|
||||
#define __usbdrv_h_included__
|
||||
#include "usbconfig.h"
|
||||
#include "usbportability.h"
|
||||
|
||||
/*
|
||||
Hardware Prerequisites:
|
||||
=======================
|
||||
USB lines D+ and D- MUST be wired to the same I/O port. We recommend that D+
|
||||
triggers the interrupt (best achieved by using INT0 for D+), but it is also
|
||||
possible to trigger the interrupt from D-. If D- is used, interrupts are also
|
||||
triggered by SOF packets. D- requires a pull-up of 1.5k to +3.5V (and the
|
||||
device must be powered at 3.5V) to identify as low-speed USB device. A
|
||||
pull-down or pull-up of 1M SHOULD be connected from D+ to +3.5V to prevent
|
||||
interference when no USB master is connected. If you use Zener diodes to limit
|
||||
the voltage on D+ and D-, you MUST use a pull-down resistor, not a pull-up.
|
||||
We use D+ as interrupt source and not D- because it does not trigger on
|
||||
keep-alive and RESET states. If you want to count keep-alive events with
|
||||
USB_COUNT_SOF, you MUST use D- as an interrupt source.
|
||||
|
||||
As a compile time option, the 1.5k pull-up resistor on D- can be made
|
||||
switchable to allow the device to disconnect at will. See the definition of
|
||||
usbDeviceConnect() and usbDeviceDisconnect() further down in this file.
|
||||
|
||||
Please adapt the values in usbconfig.h according to your hardware!
|
||||
|
||||
The device MUST be clocked at exactly 12 MHz, 15 MHz, 16 MHz or 20 MHz
|
||||
or at 12.8 MHz resp. 16.5 MHz +/- 1%. See usbconfig-prototype.h for details.
|
||||
|
||||
|
||||
Limitations:
|
||||
============
|
||||
Robustness with respect to communication errors:
|
||||
The driver assumes error-free communication. It DOES check for errors in
|
||||
the PID, but does NOT check bit stuffing errors, SE0 in middle of a byte,
|
||||
token CRC (5 bit) and data CRC (16 bit). CRC checks can not be performed due
|
||||
to timing constraints: We must start sending a reply within 7 bit times.
|
||||
Bit stuffing and misplaced SE0 would have to be checked in real-time, but CPU
|
||||
performance does not permit that. The driver does not check Data0/Data1
|
||||
toggling, but application software can implement the check.
|
||||
|
||||
Input characteristics:
|
||||
Since no differential receiver circuit is used, electrical interference
|
||||
robustness may suffer. The driver samples only one of the data lines with
|
||||
an ordinary I/O pin's input characteristics. However, since this is only a
|
||||
low speed USB implementation and the specification allows for 8 times the
|
||||
bit rate over the same hardware, we should be on the safe side. Even the spec
|
||||
requires detection of asymmetric states at high bit rate for SE0 detection.
|
||||
|
||||
Number of endpoints:
|
||||
The driver supports the following endpoints:
|
||||
|
||||
- Endpoint 0, the default control endpoint.
|
||||
- Any number of interrupt- or bulk-out endpoints. The data is sent to
|
||||
usbFunctionWriteOut() and USB_CFG_IMPLEMENT_FN_WRITEOUT must be defined
|
||||
to 1 to activate this feature. The endpoint number can be found in the
|
||||
global variable 'usbRxToken'.
|
||||
- One default interrupt- or bulk-in endpoint. This endpoint is used for
|
||||
interrupt- or bulk-in transfers which are not handled by any other endpoint.
|
||||
You must define USB_CFG_HAVE_INTRIN_ENDPOINT in order to activate this
|
||||
feature and call usbSetInterrupt() to send interrupt/bulk data.
|
||||
- One additional interrupt- or bulk-in endpoint. This was endpoint 3 in
|
||||
previous versions of this driver but can now be configured to any endpoint
|
||||
number. You must define USB_CFG_HAVE_INTRIN_ENDPOINT3 in order to activate
|
||||
this feature and call usbSetInterrupt3() to send interrupt/bulk data. The
|
||||
endpoint number can be set with USB_CFG_EP3_NUMBER.
|
||||
|
||||
Please note that the USB standard forbids bulk endpoints for low speed devices!
|
||||
Most operating systems allow them anyway, but the AVR will spend 90% of the CPU
|
||||
time in the USB interrupt polling for bulk data.
|
||||
|
||||
Maximum data payload:
|
||||
Data payload of control in and out transfers may be up to 254 bytes. In order
|
||||
to accept payload data of out transfers, you need to implement
|
||||
'usbFunctionWrite()'.
|
||||
|
||||
USB Suspend Mode supply current:
|
||||
The USB standard limits power consumption to 500uA when the bus is in suspend
|
||||
mode. This is not a problem for self-powered devices since they don't need
|
||||
bus power anyway. Bus-powered devices can achieve this only by putting the
|
||||
CPU in sleep mode. The driver does not implement suspend handling by itself.
|
||||
However, the application may implement activity monitoring and wakeup from
|
||||
sleep. The host sends regular SE0 states on the bus to keep it active. These
|
||||
SE0 states can be detected by using D- as the interrupt source. Define
|
||||
USB_COUNT_SOF to 1 and use the global variable usbSofCount to check for bus
|
||||
activity.
|
||||
|
||||
Operation without an USB master:
|
||||
The driver behaves neutral without connection to an USB master if D- reads
|
||||
as 1. To avoid spurious interrupts, we recommend a high impedance (e.g. 1M)
|
||||
pull-down or pull-up resistor on D+ (interrupt). If Zener diodes are used,
|
||||
use a pull-down. If D- becomes statically 0, the driver may block in the
|
||||
interrupt routine.
|
||||
|
||||
Interrupt latency:
|
||||
The application must ensure that the USB interrupt is not disabled for more
|
||||
than 25 cycles (this is for 12 MHz, faster clocks allow longer latency).
|
||||
This implies that all interrupt routines must either have the "ISR_NOBLOCK"
|
||||
attribute set (see "avr/interrupt.h") or be written in assembler with "sei"
|
||||
as the first instruction.
|
||||
|
||||
Maximum interrupt duration / CPU cycle consumption:
|
||||
The driver handles all USB communication during the interrupt service
|
||||
routine. The routine will not return before an entire USB message is received
|
||||
and the reply is sent. This may be up to ca. 1200 cycles @ 12 MHz (= 100us) if
|
||||
the host conforms to the standard. The driver will consume CPU cycles for all
|
||||
USB messages, even if they address another (low-speed) device on the same bus.
|
||||
|
||||
*/
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
/* --------------------------- Module Interface ---------------------------- */
|
||||
/* ------------------------------------------------------------------------- */
|
||||
|
||||
#define USBDRV_VERSION 20121206
|
||||
/* This define uniquely identifies a driver version. It is a decimal number
|
||||
* constructed from the driver's release date in the form YYYYMMDD. If the
|
||||
* driver's behavior or interface changes, you can use this constant to
|
||||
* distinguish versions. If it is not defined, the driver's release date is
|
||||
* older than 2006-01-25.
|
||||
*/
|
||||
|
||||
|
||||
#ifndef USB_PUBLIC
|
||||
#define USB_PUBLIC
|
||||
#endif
|
||||
/* USB_PUBLIC is used as declaration attribute for all functions exported by
|
||||
* the USB driver. The default is no attribute (see above). You may define it
|
||||
* to static either in usbconfig.h or from the command line if you include
|
||||
* usbdrv.c instead of linking against it. Including the C module of the driver
|
||||
* directly in your code saves a couple of bytes in flash memory.
|
||||
*/
|
||||
|
||||
#ifndef __ASSEMBLER__
|
||||
#ifndef uchar
|
||||
#define uchar unsigned char
|
||||
#endif
|
||||
#ifndef schar
|
||||
#define schar signed char
|
||||
#endif
|
||||
/* shortcuts for well defined 8 bit integer types */
|
||||
|
||||
#if USB_CFG_LONG_TRANSFERS /* if more than 254 bytes transfer size required */
|
||||
# define usbMsgLen_t unsigned
|
||||
#else
|
||||
# define usbMsgLen_t uchar
|
||||
#endif
|
||||
/* usbMsgLen_t is the data type used for transfer lengths. By default, it is
|
||||
* defined to uchar, allowing a maximum of 254 bytes (255 is reserved for
|
||||
* USB_NO_MSG below). If the usbconfig.h defines USB_CFG_LONG_TRANSFERS to 1,
|
||||
* a 16 bit data type is used, allowing up to 16384 bytes (the rest is used
|
||||
* for flags in the descriptor configuration).
|
||||
*/
|
||||
#define USB_NO_MSG ((usbMsgLen_t)-1) /* constant meaning "no message" */
|
||||
|
||||
#ifndef usbMsgPtr_t
|
||||
#define usbMsgPtr_t uchar *
|
||||
#endif
|
||||
/* Making usbMsgPtr_t a define allows the user of this library to define it to
|
||||
* an 8 bit type on tiny devices. This reduces code size, especially if the
|
||||
* compiler supports a tiny memory model.
|
||||
* The type can be a pointer or scalar type, casts are made where necessary.
|
||||
* Although it's paradoxical, Gcc 4 generates slightly better code for scalar
|
||||
* types than for pointers.
|
||||
*/
|
||||
|
||||
struct usbRequest; /* forward declaration */
|
||||
|
||||
USB_PUBLIC void usbInit(void);
|
||||
/* This function must be called before interrupts are enabled and the main
|
||||
* loop is entered. We exepct that the PORT and DDR bits for D+ and D- have
|
||||
* not been changed from their default status (which is 0). If you have changed
|
||||
* them, set both back to 0 (configure them as input with no internal pull-up).
|
||||
*/
|
||||
USB_PUBLIC void usbPoll(void);
|
||||
/* This function must be called at regular intervals from the main loop.
|
||||
* Maximum delay between calls is somewhat less than 50ms (USB timeout for
|
||||
* accepting a Setup message). Otherwise the device will not be recognized.
|
||||
* Please note that debug outputs through the UART take ~ 0.5ms per byte
|
||||
* at 19200 bps.
|
||||
*/
|
||||
extern usbMsgPtr_t usbMsgPtr;
|
||||
/* This variable may be used to pass transmit data to the driver from the
|
||||
* implementation of usbFunctionWrite(). It is also used internally by the
|
||||
* driver for standard control requests.
|
||||
*/
|
||||
USB_PUBLIC usbMsgLen_t usbFunctionSetup(uchar data[8]);
|
||||
/* This function is called when the driver receives a SETUP transaction from
|
||||
* the host which is not answered by the driver itself (in practice: class and
|
||||
* vendor requests). All control transfers start with a SETUP transaction where
|
||||
* the host communicates the parameters of the following (optional) data
|
||||
* transfer. The SETUP data is available in the 'data' parameter which can
|
||||
* (and should) be casted to 'usbRequest_t *' for a more user-friendly access
|
||||
* to parameters.
|
||||
*
|
||||
* If the SETUP indicates a control-in transfer, you should provide the
|
||||
* requested data to the driver. There are two ways to transfer this data:
|
||||
* (1) Set the global pointer 'usbMsgPtr' to the base of the static RAM data
|
||||
* block and return the length of the data in 'usbFunctionSetup()'. The driver
|
||||
* will handle the rest. Or (2) return USB_NO_MSG in 'usbFunctionSetup()'. The
|
||||
* driver will then call 'usbFunctionRead()' when data is needed. See the
|
||||
* documentation for usbFunctionRead() for details.
|
||||
*
|
||||
* If the SETUP indicates a control-out transfer, the only way to receive the
|
||||
* data from the host is through the 'usbFunctionWrite()' call. If you
|
||||
* implement this function, you must return USB_NO_MSG in 'usbFunctionSetup()'
|
||||
* to indicate that 'usbFunctionWrite()' should be used. See the documentation
|
||||
* of this function for more information. If you just want to ignore the data
|
||||
* sent by the host, return 0 in 'usbFunctionSetup()'.
|
||||
*
|
||||
* Note that calls to the functions usbFunctionRead() and usbFunctionWrite()
|
||||
* are only done if enabled by the configuration in usbconfig.h.
|
||||
*/
|
||||
USB_PUBLIC usbMsgLen_t usbFunctionDescriptor(struct usbRequest *rq);
|
||||
/* You need to implement this function ONLY if you provide USB descriptors at
|
||||
* runtime (which is an expert feature). It is very similar to
|
||||
* usbFunctionSetup() above, but it is called only to request USB descriptor
|
||||
* data. See the documentation of usbFunctionSetup() above for more info.
|
||||
*/
|
||||
#if USB_CFG_HAVE_INTRIN_ENDPOINT
|
||||
USB_PUBLIC void usbSetInterrupt(uchar *data, uchar len);
|
||||
/* This function sets the message which will be sent during the next interrupt
|
||||
* IN transfer. The message is copied to an internal buffer and must not exceed
|
||||
* a length of 8 bytes. The message may be 0 bytes long just to indicate the
|
||||
* interrupt status to the host.
|
||||
* If you need to transfer more bytes, use a control read after the interrupt.
|
||||
*/
|
||||
#define usbInterruptIsReady() (usbTxLen1 & 0x10)
|
||||
/* This macro indicates whether the last interrupt message has already been
|
||||
* sent. If you set a new interrupt message before the old was sent, the
|
||||
* message already buffered will be lost.
|
||||
*/
|
||||
#if USB_CFG_HAVE_INTRIN_ENDPOINT3
|
||||
USB_PUBLIC void usbSetInterrupt3(uchar *data, uchar len);
|
||||
#define usbInterruptIsReady3() (usbTxLen3 & 0x10)
|
||||
/* Same as above for endpoint 3 */
|
||||
#endif
|
||||
#endif /* USB_CFG_HAVE_INTRIN_ENDPOINT */
|
||||
#if USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH /* simplified interface for backward compatibility */
|
||||
#define usbHidReportDescriptor usbDescriptorHidReport
|
||||
/* should be declared as: PROGMEM char usbHidReportDescriptor[]; */
|
||||
/* If you implement an HID device, you need to provide a report descriptor.
|
||||
* The HID report descriptor syntax is a bit complex. If you understand how
|
||||
* report descriptors are constructed, we recommend that you use the HID
|
||||
* Descriptor Tool from usb.org, see http://www.usb.org/developers/hidpage/.
|
||||
* Otherwise you should probably start with a working example.
|
||||
*/
|
||||
#endif /* USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH */
|
||||
#if USB_CFG_IMPLEMENT_FN_WRITE
|
||||
USB_PUBLIC uchar usbFunctionWrite(uchar *data, uchar len);
|
||||
/* This function is called by the driver to provide a control transfer's
|
||||
* payload data (control-out). It is called in chunks of up to 8 bytes. The
|
||||
* total count provided in the current control transfer can be obtained from
|
||||
* the 'length' property in the setup data. If an error occurred during
|
||||
* processing, return 0xff (== -1). The driver will answer the entire transfer
|
||||
* with a STALL token in this case. If you have received the entire payload
|
||||
* successfully, return 1. If you expect more data, return 0. If you don't
|
||||
* know whether the host will send more data (you should know, the total is
|
||||
* provided in the usbFunctionSetup() call!), return 1.
|
||||
* NOTE: If you return 0xff for STALL, 'usbFunctionWrite()' may still be called
|
||||
* for the remaining data. You must continue to return 0xff for STALL in these
|
||||
* calls.
|
||||
* In order to get usbFunctionWrite() called, define USB_CFG_IMPLEMENT_FN_WRITE
|
||||
* to 1 in usbconfig.h and return 0xff in usbFunctionSetup()..
|
||||
*/
|
||||
#endif /* USB_CFG_IMPLEMENT_FN_WRITE */
|
||||
#if USB_CFG_IMPLEMENT_FN_READ
|
||||
USB_PUBLIC uchar usbFunctionRead(uchar *data, uchar len);
|
||||
/* This function is called by the driver to ask the application for a control
|
||||
* transfer's payload data (control-in). It is called in chunks of up to 8
|
||||
* bytes each. You should copy the data to the location given by 'data' and
|
||||
* return the actual number of bytes copied. If you return less than requested,
|
||||
* the control-in transfer is terminated. If you return 0xff, the driver aborts
|
||||
* the transfer with a STALL token.
|
||||
* In order to get usbFunctionRead() called, define USB_CFG_IMPLEMENT_FN_READ
|
||||
* to 1 in usbconfig.h and return 0xff in usbFunctionSetup()..
|
||||
*/
|
||||
#endif /* USB_CFG_IMPLEMENT_FN_READ */
|
||||
|
||||
extern uchar usbRxToken; /* may be used in usbFunctionWriteOut() below */
|
||||
#if USB_CFG_IMPLEMENT_FN_WRITEOUT
|
||||
USB_PUBLIC void usbFunctionWriteOut(uchar *data, uchar len);
|
||||
/* This function is called by the driver when data is received on an interrupt-
|
||||
* or bulk-out endpoint. The endpoint number can be found in the global
|
||||
* variable usbRxToken. You must define USB_CFG_IMPLEMENT_FN_WRITEOUT to 1 in
|
||||
* usbconfig.h to get this function called.
|
||||
*/
|
||||
#endif /* USB_CFG_IMPLEMENT_FN_WRITEOUT */
|
||||
#ifdef USB_CFG_PULLUP_IOPORTNAME
|
||||
#define usbDeviceConnect() ((USB_PULLUP_DDR |= (1<<USB_CFG_PULLUP_BIT)), \
|
||||
(USB_PULLUP_OUT |= (1<<USB_CFG_PULLUP_BIT)))
|
||||
#define usbDeviceDisconnect() ((USB_PULLUP_DDR &= ~(1<<USB_CFG_PULLUP_BIT)), \
|
||||
(USB_PULLUP_OUT &= ~(1<<USB_CFG_PULLUP_BIT)))
|
||||
#else /* USB_CFG_PULLUP_IOPORTNAME */
|
||||
#define usbDeviceConnect() (USBDDR &= ~(1<<USBMINUS))
|
||||
#define usbDeviceDisconnect() (USBDDR |= (1<<USBMINUS))
|
||||
#endif /* USB_CFG_PULLUP_IOPORTNAME */
|
||||
/* The macros usbDeviceConnect() and usbDeviceDisconnect() (intended to look
|
||||
* like a function) connect resp. disconnect the device from the host's USB.
|
||||
* If the constants USB_CFG_PULLUP_IOPORT and USB_CFG_PULLUP_BIT are defined
|
||||
* in usbconfig.h, a disconnect consists of removing the pull-up resisitor
|
||||
* from D-, otherwise the disconnect is done by brute-force pulling D- to GND.
|
||||
* This does not conform to the spec, but it works.
|
||||
* Please note that the USB interrupt must be disabled while the device is
|
||||
* in disconnected state, or the interrupt handler will hang! You can either
|
||||
* turn off the USB interrupt selectively with
|
||||
* USB_INTR_ENABLE &= ~(1 << USB_INTR_ENABLE_BIT)
|
||||
* or use cli() to disable interrupts globally.
|
||||
*/
|
||||
extern unsigned usbCrc16(unsigned data, uchar len);
|
||||
#define usbCrc16(data, len) usbCrc16((unsigned)(data), len)
|
||||
/* This function calculates the binary complement of the data CRC used in
|
||||
* USB data packets. The value is used to build raw transmit packets.
|
||||
* You may want to use this function for data checksums or to verify received
|
||||
* data. We enforce 16 bit calling conventions for compatibility with IAR's
|
||||
* tiny memory model.
|
||||
*/
|
||||
extern unsigned usbCrc16Append(unsigned data, uchar len);
|
||||
#define usbCrc16Append(data, len) usbCrc16Append((unsigned)(data), len)
|
||||
/* This function is equivalent to usbCrc16() above, except that it appends
|
||||
* the 2 bytes CRC (lowbyte first) in the 'data' buffer after reading 'len'
|
||||
* bytes.
|
||||
*/
|
||||
#if USB_CFG_HAVE_MEASURE_FRAME_LENGTH
|
||||
extern unsigned usbMeasureFrameLength(void);
|
||||
/* This function MUST be called IMMEDIATELY AFTER USB reset and measures 1/7 of
|
||||
* the number of CPU cycles during one USB frame minus one low speed bit
|
||||
* length. In other words: return value = 1499 * (F_CPU / 10.5 MHz)
|
||||
* Since this is a busy wait, you MUST disable all interrupts with cli() before
|
||||
* calling this function.
|
||||
* This can be used to calibrate the AVR's RC oscillator.
|
||||
*/
|
||||
#endif
|
||||
extern uchar usbConfiguration;
|
||||
/* This value contains the current configuration set by the host. The driver
|
||||
* allows setting and querying of this variable with the USB SET_CONFIGURATION
|
||||
* and GET_CONFIGURATION requests, but does not use it otherwise.
|
||||
* You may want to reflect the "configured" status with a LED on the device or
|
||||
* switch on high power parts of the circuit only if the device is configured.
|
||||
*/
|
||||
#if USB_COUNT_SOF
|
||||
extern volatile uchar usbSofCount;
|
||||
/* This variable is incremented on every SOF packet. It is only available if
|
||||
* the macro USB_COUNT_SOF is defined to a value != 0.
|
||||
*/
|
||||
#endif
|
||||
#if USB_CFG_CHECK_DATA_TOGGLING
|
||||
extern uchar usbCurrentDataToken;
|
||||
/* This variable can be checked in usbFunctionWrite() and usbFunctionWriteOut()
|
||||
* to ignore duplicate packets.
|
||||
*/
|
||||
#endif
|
||||
|
||||
#define USB_STRING_DESCRIPTOR_HEADER(stringLength) ((2*(stringLength)+2) | (3<<8))
|
||||
/* This macro builds a descriptor header for a string descriptor given the
|
||||
* string's length. See usbdrv.c for an example how to use it.
|
||||
*/
|
||||
#if USB_CFG_HAVE_FLOWCONTROL
|
||||
extern volatile schar usbRxLen;
|
||||
#define usbDisableAllRequests() usbRxLen = -1
|
||||
/* Must be called from usbFunctionWrite(). This macro disables all data input
|
||||
* from the USB interface. Requests from the host are answered with a NAK
|
||||
* while they are disabled.
|
||||
*/
|
||||
#define usbEnableAllRequests() usbRxLen = 0
|
||||
/* May only be called if requests are disabled. This macro enables input from
|
||||
* the USB interface after it has been disabled with usbDisableAllRequests().
|
||||
*/
|
||||
#define usbAllRequestsAreDisabled() (usbRxLen < 0)
|
||||
/* Use this macro to find out whether requests are disabled. It may be needed
|
||||
* to ensure that usbEnableAllRequests() is never called when requests are
|
||||
* enabled.
|
||||
*/
|
||||
#endif
|
||||
|
||||
#define USB_SET_DATATOKEN1(token) usbTxBuf1[0] = token
|
||||
#define USB_SET_DATATOKEN3(token) usbTxBuf3[0] = token
|
||||
/* These two macros can be used by application software to reset data toggling
|
||||
* for interrupt-in endpoints 1 and 3. Since the token is toggled BEFORE
|
||||
* sending data, you must set the opposite value of the token which should come
|
||||
* first.
|
||||
*/
|
||||
|
||||
#endif /* __ASSEMBLER__ */
|
||||
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
/* ----------------- Definitions for Descriptor Properties ----------------- */
|
||||
/* ------------------------------------------------------------------------- */
|
||||
/* This is advanced stuff. See usbconfig-prototype.h for more information
|
||||
* about the various methods to define USB descriptors. If you do nothing,
|
||||
* the default descriptors will be used.
|
||||
*/
|
||||
#define USB_PROP_IS_DYNAMIC (1u << 14)
|
||||
/* If this property is set for a descriptor, usbFunctionDescriptor() will be
|
||||
* used to obtain the particular descriptor. Data directly returned via
|
||||
* usbMsgPtr are FLASH data by default, combine (OR) with USB_PROP_IS_RAM to
|
||||
* return RAM data.
|
||||
*/
|
||||
#define USB_PROP_IS_RAM (1u << 15)
|
||||
/* If this property is set for a descriptor, the data is read from RAM
|
||||
* memory instead of Flash. The property is used for all methods to provide
|
||||
* external descriptors.
|
||||
*/
|
||||
#define USB_PROP_LENGTH(len) ((len) & 0x3fff)
|
||||
/* If a static external descriptor is used, this is the total length of the
|
||||
* descriptor in bytes.
|
||||
*/
|
||||
|
||||
/* all descriptors which may have properties: */
|
||||
#ifndef USB_CFG_DESCR_PROPS_DEVICE
|
||||
#define USB_CFG_DESCR_PROPS_DEVICE 0
|
||||
#endif
|
||||
#ifndef USB_CFG_DESCR_PROPS_CONFIGURATION
|
||||
#define USB_CFG_DESCR_PROPS_CONFIGURATION 0
|
||||
#endif
|
||||
#ifndef USB_CFG_DESCR_PROPS_STRINGS
|
||||
#define USB_CFG_DESCR_PROPS_STRINGS 0
|
||||
#endif
|
||||
#ifndef USB_CFG_DESCR_PROPS_STRING_0
|
||||
#define USB_CFG_DESCR_PROPS_STRING_0 0
|
||||
#endif
|
||||
#ifndef USB_CFG_DESCR_PROPS_STRING_VENDOR
|
||||
#define USB_CFG_DESCR_PROPS_STRING_VENDOR 0
|
||||
#endif
|
||||
#ifndef USB_CFG_DESCR_PROPS_STRING_PRODUCT
|
||||
#define USB_CFG_DESCR_PROPS_STRING_PRODUCT 0
|
||||
#endif
|
||||
#ifndef USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER
|
||||
#define USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER 0
|
||||
#endif
|
||||
#ifndef USB_CFG_DESCR_PROPS_HID
|
||||
#define USB_CFG_DESCR_PROPS_HID 0
|
||||
#endif
|
||||
#if !(USB_CFG_DESCR_PROPS_HID_REPORT)
|
||||
# undef USB_CFG_DESCR_PROPS_HID_REPORT
|
||||
# if USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH /* do some backward compatibility tricks */
|
||||
# define USB_CFG_DESCR_PROPS_HID_REPORT USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH
|
||||
# else
|
||||
# define USB_CFG_DESCR_PROPS_HID_REPORT 0
|
||||
# endif
|
||||
#endif
|
||||
#ifndef USB_CFG_DESCR_PROPS_UNKNOWN
|
||||
#define USB_CFG_DESCR_PROPS_UNKNOWN 0
|
||||
#endif
|
||||
|
||||
/* ------------------ forward declaration of descriptors ------------------- */
|
||||
/* If you use external static descriptors, they must be stored in global
|
||||
* arrays as declared below:
|
||||
*/
|
||||
#ifndef __ASSEMBLER__
|
||||
extern
|
||||
#if !(USB_CFG_DESCR_PROPS_DEVICE & USB_PROP_IS_RAM)
|
||||
PROGMEM const
|
||||
#endif
|
||||
char usbDescriptorDevice[];
|
||||
|
||||
extern
|
||||
#if !(USB_CFG_DESCR_PROPS_CONFIGURATION & USB_PROP_IS_RAM)
|
||||
PROGMEM const
|
||||
#endif
|
||||
char usbDescriptorConfiguration[];
|
||||
|
||||
extern
|
||||
#if !(USB_CFG_DESCR_PROPS_HID_REPORT & USB_PROP_IS_RAM)
|
||||
PROGMEM const
|
||||
#endif
|
||||
char usbDescriptorHidReport[];
|
||||
|
||||
extern
|
||||
#if !(USB_CFG_DESCR_PROPS_STRING_0 & USB_PROP_IS_RAM)
|
||||
PROGMEM const
|
||||
#endif
|
||||
char usbDescriptorString0[];
|
||||
|
||||
extern
|
||||
#if !(USB_CFG_DESCR_PROPS_STRING_VENDOR & USB_PROP_IS_RAM)
|
||||
PROGMEM const
|
||||
#endif
|
||||
int usbDescriptorStringVendor[];
|
||||
|
||||
extern
|
||||
#if !(USB_CFG_DESCR_PROPS_STRING_PRODUCT & USB_PROP_IS_RAM)
|
||||
PROGMEM const
|
||||
#endif
|
||||
int usbDescriptorStringDevice[];
|
||||
|
||||
extern
|
||||
#if !(USB_CFG_DESCR_PROPS_STRING_SERIAL_NUMBER & USB_PROP_IS_RAM)
|
||||
PROGMEM const
|
||||
#endif
|
||||
int usbDescriptorStringSerialNumber[];
|
||||
|
||||
#endif /* __ASSEMBLER__ */
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
/* ------------------------ General Purpose Macros ------------------------- */
|
||||
/* ------------------------------------------------------------------------- */
|
||||
|
||||
#define USB_CONCAT(a, b) a ## b
|
||||
#define USB_CONCAT_EXPANDED(a, b) USB_CONCAT(a, b)
|
||||
|
||||
#define USB_OUTPORT(name) USB_CONCAT(PORT, name)
|
||||
#define USB_INPORT(name) USB_CONCAT(PIN, name)
|
||||
#define USB_DDRPORT(name) USB_CONCAT(DDR, name)
|
||||
/* The double-define trick above lets us concatenate strings which are
|
||||
* defined by macros.
|
||||
*/
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
/* ------------------------- Constant definitions -------------------------- */
|
||||
/* ------------------------------------------------------------------------- */
|
||||
|
||||
#if !defined __ASSEMBLER__ && (!defined USB_CFG_VENDOR_ID || !defined USB_CFG_DEVICE_ID)
|
||||
#warning "You should define USB_CFG_VENDOR_ID and USB_CFG_DEVICE_ID in usbconfig.h"
|
||||
/* If the user has not defined IDs, we default to obdev's free IDs.
|
||||
* See USB-IDs-for-free.txt for details.
|
||||
*/
|
||||
#endif
|
||||
|
||||
/* make sure we have a VID and PID defined, byte order is lowbyte, highbyte */
|
||||
#ifndef USB_CFG_VENDOR_ID
|
||||
# define USB_CFG_VENDOR_ID 0xc0, 0x16 /* = 0x16c0 = 5824 = voti.nl */
|
||||
#endif
|
||||
|
||||
#ifndef USB_CFG_DEVICE_ID
|
||||
# if USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH
|
||||
# define USB_CFG_DEVICE_ID 0xdf, 0x05 /* = 0x5df = 1503, shared PID for HIDs */
|
||||
# elif USB_CFG_INTERFACE_CLASS == 2
|
||||
# define USB_CFG_DEVICE_ID 0xe1, 0x05 /* = 0x5e1 = 1505, shared PID for CDC Modems */
|
||||
# else
|
||||
# define USB_CFG_DEVICE_ID 0xdc, 0x05 /* = 0x5dc = 1500, obdev's free PID */
|
||||
# endif
|
||||
#endif
|
||||
|
||||
/* Derive Output, Input and DataDirection ports from port names */
|
||||
#ifndef USB_CFG_IOPORTNAME
|
||||
#error "You must define USB_CFG_IOPORTNAME in usbconfig.h, see usbconfig-prototype.h"
|
||||
#endif
|
||||
|
||||
#define USBOUT USB_OUTPORT(USB_CFG_IOPORTNAME)
|
||||
#define USB_PULLUP_OUT USB_OUTPORT(USB_CFG_PULLUP_IOPORTNAME)
|
||||
#define USBIN USB_INPORT(USB_CFG_IOPORTNAME)
|
||||
#define USBDDR USB_DDRPORT(USB_CFG_IOPORTNAME)
|
||||
#define USB_PULLUP_DDR USB_DDRPORT(USB_CFG_PULLUP_IOPORTNAME)
|
||||
|
||||
#define USBMINUS USB_CFG_DMINUS_BIT
|
||||
#define USBPLUS USB_CFG_DPLUS_BIT
|
||||
#define USBIDLE (1<<USB_CFG_DMINUS_BIT) /* value representing J state */
|
||||
#define USBMASK ((1<<USB_CFG_DPLUS_BIT) | (1<<USB_CFG_DMINUS_BIT)) /* mask for USB I/O bits */
|
||||
|
||||
/* defines for backward compatibility with older driver versions: */
|
||||
#define USB_CFG_IOPORT USB_OUTPORT(USB_CFG_IOPORTNAME)
|
||||
#ifdef USB_CFG_PULLUP_IOPORTNAME
|
||||
#define USB_CFG_PULLUP_IOPORT USB_OUTPORT(USB_CFG_PULLUP_IOPORTNAME)
|
||||
#endif
|
||||
|
||||
#ifndef USB_CFG_EP3_NUMBER /* if not defined in usbconfig.h */
|
||||
#define USB_CFG_EP3_NUMBER 3
|
||||
#endif
|
||||
|
||||
#ifndef USB_CFG_HAVE_INTRIN_ENDPOINT3
|
||||
#define USB_CFG_HAVE_INTRIN_ENDPOINT3 0
|
||||
#endif
|
||||
|
||||
#define USB_BUFSIZE 11 /* PID, 8 bytes data, 2 bytes CRC */
|
||||
|
||||
/* ----- Try to find registers and bits responsible for ext interrupt 0 ----- */
|
||||
|
||||
#ifndef USB_INTR_CFG /* allow user to override our default */
|
||||
# if defined EICRA
|
||||
# define USB_INTR_CFG EICRA
|
||||
# else
|
||||
# define USB_INTR_CFG MCUCR
|
||||
# endif
|
||||
#endif
|
||||
#ifndef USB_INTR_CFG_SET /* allow user to override our default */
|
||||
# if defined(USB_COUNT_SOF) || defined(USB_SOF_HOOK)
|
||||
# define USB_INTR_CFG_SET (1 << ISC01) /* cfg for falling edge */
|
||||
/* If any SOF logic is used, the interrupt must be wired to D- where
|
||||
* we better trigger on falling edge
|
||||
*/
|
||||
# else
|
||||
# define USB_INTR_CFG_SET ((1 << ISC00) | (1 << ISC01)) /* cfg for rising edge */
|
||||
# endif
|
||||
#endif
|
||||
#ifndef USB_INTR_CFG_CLR /* allow user to override our default */
|
||||
# define USB_INTR_CFG_CLR 0 /* no bits to clear */
|
||||
#endif
|
||||
|
||||
#ifndef USB_INTR_ENABLE /* allow user to override our default */
|
||||
# if defined GIMSK
|
||||
# define USB_INTR_ENABLE GIMSK
|
||||
# elif defined EIMSK
|
||||
# define USB_INTR_ENABLE EIMSK
|
||||
# else
|
||||
# define USB_INTR_ENABLE GICR
|
||||
# endif
|
||||
#endif
|
||||
#ifndef USB_INTR_ENABLE_BIT /* allow user to override our default */
|
||||
# define USB_INTR_ENABLE_BIT INT0
|
||||
#endif
|
||||
|
||||
#ifndef USB_INTR_PENDING /* allow user to override our default */
|
||||
# if defined EIFR
|
||||
# define USB_INTR_PENDING EIFR
|
||||
# else
|
||||
# define USB_INTR_PENDING GIFR
|
||||
# endif
|
||||
#endif
|
||||
#ifndef USB_INTR_PENDING_BIT /* allow user to override our default */
|
||||
# define USB_INTR_PENDING_BIT INTF0
|
||||
#endif
|
||||
|
||||
/*
|
||||
The defines above don't work for the following chips
|
||||
at90c8534: no ISC0?, no PORTB, can't find a data sheet
|
||||
at86rf401: no PORTB, no MCUCR etc, low clock rate
|
||||
atmega103: no ISC0? (maybe omission in header, can't find data sheet)
|
||||
atmega603: not defined in avr-libc
|
||||
at43usb320, at43usb355, at76c711: have USB anyway
|
||||
at94k: is different...
|
||||
|
||||
at90s1200, attiny11, attiny12, attiny15, attiny28: these have no RAM
|
||||
*/
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
/* ----------------- USB Specification Constants and Types ----------------- */
|
||||
/* ------------------------------------------------------------------------- */
|
||||
|
||||
/* USB Token values */
|
||||
#define USBPID_SETUP 0x2d
|
||||
#define USBPID_OUT 0xe1
|
||||
#define USBPID_IN 0x69
|
||||
#define USBPID_DATA0 0xc3
|
||||
#define USBPID_DATA1 0x4b
|
||||
|
||||
#define USBPID_ACK 0xd2
|
||||
#define USBPID_NAK 0x5a
|
||||
#define USBPID_STALL 0x1e
|
||||
|
||||
#ifndef USB_INITIAL_DATATOKEN
|
||||
#define USB_INITIAL_DATATOKEN USBPID_DATA1
|
||||
#endif
|
||||
|
||||
#ifndef __ASSEMBLER__
|
||||
|
||||
typedef struct usbTxStatus{
|
||||
volatile uchar len;
|
||||
uchar buffer[USB_BUFSIZE];
|
||||
}usbTxStatus_t;
|
||||
|
||||
extern usbTxStatus_t usbTxStatus1, usbTxStatus3;
|
||||
#define usbTxLen1 usbTxStatus1.len
|
||||
#define usbTxBuf1 usbTxStatus1.buffer
|
||||
#define usbTxLen3 usbTxStatus3.len
|
||||
#define usbTxBuf3 usbTxStatus3.buffer
|
||||
|
||||
|
||||
typedef union usbWord{
|
||||
unsigned word;
|
||||
uchar bytes[2];
|
||||
}usbWord_t;
|
||||
|
||||
typedef struct usbRequest{
|
||||
uchar bmRequestType;
|
||||
uchar bRequest;
|
||||
usbWord_t wValue;
|
||||
usbWord_t wIndex;
|
||||
usbWord_t wLength;
|
||||
}usbRequest_t;
|
||||
/* This structure matches the 8 byte setup request */
|
||||
#endif
|
||||
|
||||
/* bmRequestType field in USB setup:
|
||||
* d t t r r r r r, where
|
||||
* d ..... direction: 0=host->device, 1=device->host
|
||||
* t ..... type: 0=standard, 1=class, 2=vendor, 3=reserved
|
||||
* r ..... recipient: 0=device, 1=interface, 2=endpoint, 3=other
|
||||
*/
|
||||
|
||||
/* USB setup recipient values */
|
||||
#define USBRQ_RCPT_MASK 0x1f
|
||||
#define USBRQ_RCPT_DEVICE 0
|
||||
#define USBRQ_RCPT_INTERFACE 1
|
||||
#define USBRQ_RCPT_ENDPOINT 2
|
||||
|
||||
/* USB request type values */
|
||||
#define USBRQ_TYPE_MASK 0x60
|
||||
#define USBRQ_TYPE_STANDARD (0<<5)
|
||||
#define USBRQ_TYPE_CLASS (1<<5)
|
||||
#define USBRQ_TYPE_VENDOR (2<<5)
|
||||
|
||||
/* USB direction values: */
|
||||
#define USBRQ_DIR_MASK 0x80
|
||||
#define USBRQ_DIR_HOST_TO_DEVICE (0<<7)
|
||||
#define USBRQ_DIR_DEVICE_TO_HOST (1<<7)
|
||||
|
||||
/* USB Standard Requests */
|
||||
#define USBRQ_GET_STATUS 0
|
||||
#define USBRQ_CLEAR_FEATURE 1
|
||||
#define USBRQ_SET_FEATURE 3
|
||||
#define USBRQ_SET_ADDRESS 5
|
||||
#define USBRQ_GET_DESCRIPTOR 6
|
||||
#define USBRQ_SET_DESCRIPTOR 7
|
||||
#define USBRQ_GET_CONFIGURATION 8
|
||||
#define USBRQ_SET_CONFIGURATION 9
|
||||
#define USBRQ_GET_INTERFACE 10
|
||||
#define USBRQ_SET_INTERFACE 11
|
||||
#define USBRQ_SYNCH_FRAME 12
|
||||
|
||||
/* USB descriptor constants */
|
||||
#define USBDESCR_DEVICE 1
|
||||
#define USBDESCR_CONFIG 2
|
||||
#define USBDESCR_STRING 3
|
||||
#define USBDESCR_INTERFACE 4
|
||||
#define USBDESCR_ENDPOINT 5
|
||||
#define USBDESCR_HID 0x21
|
||||
#define USBDESCR_HID_REPORT 0x22
|
||||
#define USBDESCR_HID_PHYS 0x23
|
||||
|
||||
//#define USBATTR_BUSPOWER 0x80 // USB 1.1 does not define this value any more
|
||||
#define USBATTR_BUSPOWER 0
|
||||
#define USBATTR_SELFPOWER 0x40
|
||||
#define USBATTR_REMOTEWAKE 0x20
|
||||
|
||||
/* USB HID Requests */
|
||||
#define USBRQ_HID_GET_REPORT 0x01
|
||||
#define USBRQ_HID_GET_IDLE 0x02
|
||||
#define USBRQ_HID_GET_PROTOCOL 0x03
|
||||
#define USBRQ_HID_SET_REPORT 0x09
|
||||
#define USBRQ_HID_SET_IDLE 0x0a
|
||||
#define USBRQ_HID_SET_PROTOCOL 0x0b
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
|
||||
#endif /* __usbdrv_h_included__ */
|
||||
392
usbdrv/usbdrvasm.S
Normal file
392
usbdrv/usbdrvasm.S
Normal file
@ -0,0 +1,392 @@
|
||||
/* Name: usbdrvasm.S
|
||||
* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
|
||||
* Author: Christian Starkjohann
|
||||
* Creation Date: 2007-06-13
|
||||
* Tabsize: 4
|
||||
* Copyright: (c) 2007 by OBJECTIVE DEVELOPMENT Software GmbH
|
||||
* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
|
||||
*/
|
||||
|
||||
/*
|
||||
General Description:
|
||||
This module is the assembler part of the USB driver. This file contains
|
||||
general code (preprocessor acrobatics and CRC computation) and then includes
|
||||
the file appropriate for the given clock rate.
|
||||
*/
|
||||
|
||||
#define __SFR_OFFSET 0 /* used by avr-libc's register definitions */
|
||||
#include "usbportability.h"
|
||||
#include "usbdrv.h" /* for common defs */
|
||||
|
||||
/* register names */
|
||||
#define x1 r16
|
||||
#define x2 r17
|
||||
#define shift r18
|
||||
#define cnt r19
|
||||
#define x3 r20
|
||||
#define x4 r21
|
||||
#define x5 r22
|
||||
#define bitcnt x5
|
||||
#define phase x4
|
||||
#define leap x4
|
||||
|
||||
/* Some assembler dependent definitions and declarations: */
|
||||
|
||||
#ifdef __IAR_SYSTEMS_ASM__
|
||||
extern usbRxBuf, usbDeviceAddr, usbNewDeviceAddr, usbInputBufOffset
|
||||
extern usbCurrentTok, usbRxLen, usbRxToken, usbTxLen
|
||||
extern usbTxBuf, usbTxStatus1, usbTxStatus3
|
||||
# if USB_COUNT_SOF
|
||||
extern usbSofCount
|
||||
# endif
|
||||
public usbCrc16
|
||||
public usbCrc16Append
|
||||
|
||||
COMMON INTVEC
|
||||
# ifndef USB_INTR_VECTOR
|
||||
ORG INT0_vect
|
||||
# else /* USB_INTR_VECTOR */
|
||||
ORG USB_INTR_VECTOR
|
||||
# undef USB_INTR_VECTOR
|
||||
# endif /* USB_INTR_VECTOR */
|
||||
# define USB_INTR_VECTOR usbInterruptHandler
|
||||
rjmp USB_INTR_VECTOR
|
||||
RSEG CODE
|
||||
|
||||
#else /* __IAR_SYSTEMS_ASM__ */
|
||||
|
||||
# ifndef USB_INTR_VECTOR /* default to hardware interrupt INT0 */
|
||||
# ifdef INT0_vect
|
||||
# define USB_INTR_VECTOR INT0_vect // this is the "new" define for the vector
|
||||
# else
|
||||
# define USB_INTR_VECTOR SIG_INTERRUPT0 // this is the "old" vector
|
||||
# endif
|
||||
# endif
|
||||
.text
|
||||
.global USB_INTR_VECTOR
|
||||
.type USB_INTR_VECTOR, @function
|
||||
.global usbCrc16
|
||||
.global usbCrc16Append
|
||||
#endif /* __IAR_SYSTEMS_ASM__ */
|
||||
|
||||
|
||||
#if USB_INTR_PENDING < 0x40 /* This is an I/O address, use in and out */
|
||||
# define USB_LOAD_PENDING(reg) in reg, USB_INTR_PENDING
|
||||
# define USB_STORE_PENDING(reg) out USB_INTR_PENDING, reg
|
||||
#else /* It's a memory address, use lds and sts */
|
||||
# define USB_LOAD_PENDING(reg) lds reg, USB_INTR_PENDING
|
||||
# define USB_STORE_PENDING(reg) sts USB_INTR_PENDING, reg
|
||||
#endif
|
||||
|
||||
#define usbTxLen1 usbTxStatus1
|
||||
#define usbTxBuf1 (usbTxStatus1 + 1)
|
||||
#define usbTxLen3 usbTxStatus3
|
||||
#define usbTxBuf3 (usbTxStatus3 + 1)
|
||||
|
||||
|
||||
;----------------------------------------------------------------------------
|
||||
; Utility functions
|
||||
;----------------------------------------------------------------------------
|
||||
|
||||
#ifdef __IAR_SYSTEMS_ASM__
|
||||
/* Register assignments for usbCrc16 on IAR cc */
|
||||
/* Calling conventions on IAR:
|
||||
* First parameter passed in r16/r17, second in r18/r19 and so on.
|
||||
* Callee must preserve r4-r15, r24-r29 (r28/r29 is frame pointer)
|
||||
* Result is passed in r16/r17
|
||||
* In case of the "tiny" memory model, pointers are only 8 bit with no
|
||||
* padding. We therefore pass argument 1 as "16 bit unsigned".
|
||||
*/
|
||||
RTMODEL "__rt_version", "3"
|
||||
/* The line above will generate an error if cc calling conventions change.
|
||||
* The value "3" above is valid for IAR 4.10B/W32
|
||||
*/
|
||||
# define argLen r18 /* argument 2 */
|
||||
# define argPtrL r16 /* argument 1 */
|
||||
# define argPtrH r17 /* argument 1 */
|
||||
|
||||
# define resCrcL r16 /* result */
|
||||
# define resCrcH r17 /* result */
|
||||
|
||||
# define ptrL ZL
|
||||
# define ptrH ZH
|
||||
# define ptr Z
|
||||
# define byte r22
|
||||
# define bitCnt r19
|
||||
# define polyL r20
|
||||
# define polyH r21
|
||||
# define scratch r23
|
||||
|
||||
#else /* __IAR_SYSTEMS_ASM__ */
|
||||
/* Register assignments for usbCrc16 on gcc */
|
||||
/* Calling conventions on gcc:
|
||||
* First parameter passed in r24/r25, second in r22/23 and so on.
|
||||
* Callee must preserve r1-r17, r28/r29
|
||||
* Result is passed in r24/r25
|
||||
*/
|
||||
# define argLen r22 /* argument 2 */
|
||||
# define argPtrL r24 /* argument 1 */
|
||||
# define argPtrH r25 /* argument 1 */
|
||||
|
||||
# define resCrcL r24 /* result */
|
||||
# define resCrcH r25 /* result */
|
||||
|
||||
# define ptrL XL
|
||||
# define ptrH XH
|
||||
# define ptr x
|
||||
# define byte r18
|
||||
# define bitCnt r19
|
||||
# define polyL r20
|
||||
# define polyH r21
|
||||
# define scratch r23
|
||||
|
||||
#endif
|
||||
|
||||
#if USB_USE_FAST_CRC
|
||||
|
||||
; This implementation is faster, but has bigger code size
|
||||
; Thanks to Slawomir Fras (BoskiDialer) for this code!
|
||||
; It implements the following C pseudo-code:
|
||||
; unsigned table(unsigned char x)
|
||||
; {
|
||||
; unsigned value;
|
||||
;
|
||||
; value = (unsigned)x << 6;
|
||||
; value ^= (unsigned)x << 7;
|
||||
; if(parity(x))
|
||||
; value ^= 0xc001;
|
||||
; return value;
|
||||
; }
|
||||
; unsigned usbCrc16(unsigned char *argPtr, unsigned char argLen)
|
||||
; {
|
||||
; unsigned crc = 0xffff;
|
||||
;
|
||||
; while(argLen--)
|
||||
; crc = table(lo8(crc) ^ *argPtr++) ^ hi8(crc);
|
||||
; return ~crc;
|
||||
; }
|
||||
|
||||
; extern unsigned usbCrc16(unsigned char *argPtr, unsigned char argLen);
|
||||
; argPtr r24+25 / r16+r17
|
||||
; argLen r22 / r18
|
||||
; temp variables:
|
||||
; byte r18 / r22
|
||||
; scratch r23
|
||||
; resCrc r24+r25 / r16+r17
|
||||
; ptr X / Z
|
||||
usbCrc16:
|
||||
mov ptrL, argPtrL
|
||||
mov ptrH, argPtrH
|
||||
ldi resCrcL, 0xFF
|
||||
ldi resCrcH, 0xFF
|
||||
rjmp usbCrc16LoopTest
|
||||
usbCrc16ByteLoop:
|
||||
ld byte, ptr+
|
||||
eor resCrcL, byte ; resCrcL is now 'x' in table()
|
||||
mov byte, resCrcL ; compute parity of 'x'
|
||||
swap byte
|
||||
eor byte, resCrcL
|
||||
mov scratch, byte
|
||||
lsr byte
|
||||
lsr byte
|
||||
eor byte, scratch
|
||||
inc byte
|
||||
lsr byte
|
||||
andi byte, 1 ; byte is now parity(x)
|
||||
mov scratch, resCrcL
|
||||
mov resCrcL, resCrcH
|
||||
eor resCrcL, byte ; low byte of if(parity(x)) value ^= 0xc001;
|
||||
neg byte
|
||||
andi byte, 0xc0
|
||||
mov resCrcH, byte ; high byte of if(parity(x)) value ^= 0xc001;
|
||||
clr byte
|
||||
lsr scratch
|
||||
ror byte
|
||||
eor resCrcH, scratch
|
||||
eor resCrcL, byte
|
||||
lsr scratch
|
||||
ror byte
|
||||
eor resCrcH, scratch
|
||||
eor resCrcL, byte
|
||||
usbCrc16LoopTest:
|
||||
subi argLen, 1
|
||||
brsh usbCrc16ByteLoop
|
||||
com resCrcL
|
||||
com resCrcH
|
||||
ret
|
||||
|
||||
#else /* USB_USE_FAST_CRC */
|
||||
|
||||
; This implementation is slower, but has less code size
|
||||
;
|
||||
; extern unsigned usbCrc16(unsigned char *argPtr, unsigned char argLen);
|
||||
; argPtr r24+25 / r16+r17
|
||||
; argLen r22 / r18
|
||||
; temp variables:
|
||||
; byte r18 / r22
|
||||
; bitCnt r19
|
||||
; poly r20+r21
|
||||
; scratch r23
|
||||
; resCrc r24+r25 / r16+r17
|
||||
; ptr X / Z
|
||||
usbCrc16:
|
||||
mov ptrL, argPtrL
|
||||
mov ptrH, argPtrH
|
||||
ldi resCrcL, 0
|
||||
ldi resCrcH, 0
|
||||
ldi polyL, lo8(0xa001)
|
||||
ldi polyH, hi8(0xa001)
|
||||
com argLen ; argLen = -argLen - 1: modified loop to ensure that carry is set
|
||||
ldi bitCnt, 0 ; loop counter with starnd condition = end condition
|
||||
rjmp usbCrcLoopEntry
|
||||
usbCrcByteLoop:
|
||||
ld byte, ptr+
|
||||
eor resCrcL, byte
|
||||
usbCrcBitLoop:
|
||||
ror resCrcH ; carry is always set here (see brcs jumps to here)
|
||||
ror resCrcL
|
||||
brcs usbCrcNoXor
|
||||
eor resCrcL, polyL
|
||||
eor resCrcH, polyH
|
||||
usbCrcNoXor:
|
||||
subi bitCnt, 224 ; (8 * 224) % 256 = 0; this loop iterates 8 times
|
||||
brcs usbCrcBitLoop
|
||||
usbCrcLoopEntry:
|
||||
subi argLen, -1
|
||||
brcs usbCrcByteLoop
|
||||
usbCrcReady:
|
||||
ret
|
||||
; Thanks to Reimar Doeffinger for optimizing this CRC routine!
|
||||
|
||||
#endif /* USB_USE_FAST_CRC */
|
||||
|
||||
; extern unsigned usbCrc16Append(unsigned char *data, unsigned char len);
|
||||
usbCrc16Append:
|
||||
rcall usbCrc16
|
||||
st ptr+, resCrcL
|
||||
st ptr+, resCrcH
|
||||
ret
|
||||
|
||||
#undef argLen
|
||||
#undef argPtrL
|
||||
#undef argPtrH
|
||||
#undef resCrcL
|
||||
#undef resCrcH
|
||||
#undef ptrL
|
||||
#undef ptrH
|
||||
#undef ptr
|
||||
#undef byte
|
||||
#undef bitCnt
|
||||
#undef polyL
|
||||
#undef polyH
|
||||
#undef scratch
|
||||
|
||||
|
||||
#if USB_CFG_HAVE_MEASURE_FRAME_LENGTH
|
||||
#ifdef __IAR_SYSTEMS_ASM__
|
||||
/* Register assignments for usbMeasureFrameLength on IAR cc */
|
||||
/* Calling conventions on IAR:
|
||||
* First parameter passed in r16/r17, second in r18/r19 and so on.
|
||||
* Callee must preserve r4-r15, r24-r29 (r28/r29 is frame pointer)
|
||||
* Result is passed in r16/r17
|
||||
* In case of the "tiny" memory model, pointers are only 8 bit with no
|
||||
* padding. We therefore pass argument 1 as "16 bit unsigned".
|
||||
*/
|
||||
# define resL r16
|
||||
# define resH r17
|
||||
# define cnt16L r30
|
||||
# define cnt16H r31
|
||||
# define cntH r18
|
||||
|
||||
#else /* __IAR_SYSTEMS_ASM__ */
|
||||
/* Register assignments for usbMeasureFrameLength on gcc */
|
||||
/* Calling conventions on gcc:
|
||||
* First parameter passed in r24/r25, second in r22/23 and so on.
|
||||
* Callee must preserve r1-r17, r28/r29
|
||||
* Result is passed in r24/r25
|
||||
*/
|
||||
# define resL r24
|
||||
# define resH r25
|
||||
# define cnt16L r24
|
||||
# define cnt16H r25
|
||||
# define cntH r26
|
||||
#endif
|
||||
# define cnt16 cnt16L
|
||||
|
||||
; extern unsigned usbMeasurePacketLength(void);
|
||||
; returns time between two idle strobes in multiples of 7 CPU clocks
|
||||
.global usbMeasureFrameLength
|
||||
usbMeasureFrameLength:
|
||||
ldi cntH, 6 ; wait ~ 10 ms for D- == 0
|
||||
clr cnt16L
|
||||
clr cnt16H
|
||||
usbMFTime16:
|
||||
dec cntH
|
||||
breq usbMFTimeout
|
||||
usbMFWaitStrobe: ; first wait for D- == 0 (idle strobe)
|
||||
sbiw cnt16, 1 ;[0] [6]
|
||||
breq usbMFTime16 ;[2]
|
||||
sbic USBIN, USBMINUS ;[3]
|
||||
rjmp usbMFWaitStrobe ;[4]
|
||||
usbMFWaitIdle: ; then wait until idle again
|
||||
sbis USBIN, USBMINUS ;1 wait for D- == 1
|
||||
rjmp usbMFWaitIdle ;2
|
||||
ldi cnt16L, 1 ;1 represents cycles so far
|
||||
clr cnt16H ;1
|
||||
usbMFWaitLoop:
|
||||
in cntH, USBIN ;[0] [7]
|
||||
adiw cnt16, 1 ;[1]
|
||||
breq usbMFTimeout ;[3]
|
||||
andi cntH, USBMASK ;[4]
|
||||
brne usbMFWaitLoop ;[5]
|
||||
usbMFTimeout:
|
||||
#if resL != cnt16L
|
||||
mov resL, cnt16L
|
||||
mov resH, cnt16H
|
||||
#endif
|
||||
ret
|
||||
|
||||
#undef resL
|
||||
#undef resH
|
||||
#undef cnt16
|
||||
#undef cnt16L
|
||||
#undef cnt16H
|
||||
#undef cntH
|
||||
|
||||
#endif /* USB_CFG_HAVE_MEASURE_FRAME_LENGTH */
|
||||
|
||||
;----------------------------------------------------------------------------
|
||||
; Now include the clock rate specific code
|
||||
;----------------------------------------------------------------------------
|
||||
|
||||
#ifndef USB_CFG_CLOCK_KHZ
|
||||
# ifdef F_CPU
|
||||
# define USB_CFG_CLOCK_KHZ (F_CPU/1000)
|
||||
# else
|
||||
# error "USB_CFG_CLOCK_KHZ not defined in usbconfig.h and no F_CPU set!"
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#if USB_CFG_CHECK_CRC /* separate dispatcher for CRC type modules */
|
||||
# if USB_CFG_CLOCK_KHZ == 18000
|
||||
# include "usbdrvasm18-crc.inc"
|
||||
# else
|
||||
# error "USB_CFG_CLOCK_KHZ is not one of the supported crc-rates!"
|
||||
# endif
|
||||
#else /* USB_CFG_CHECK_CRC */
|
||||
# if USB_CFG_CLOCK_KHZ == 12000
|
||||
# include "usbdrvasm12.inc"
|
||||
# elif USB_CFG_CLOCK_KHZ == 12800
|
||||
# include "usbdrvasm128.inc"
|
||||
# elif USB_CFG_CLOCK_KHZ == 15000
|
||||
# include "usbdrvasm15.inc"
|
||||
# elif USB_CFG_CLOCK_KHZ == 16000
|
||||
# include "usbdrvasm16.inc"
|
||||
# elif USB_CFG_CLOCK_KHZ == 16500
|
||||
# include "usbdrvasm165.inc"
|
||||
# elif USB_CFG_CLOCK_KHZ == 20000
|
||||
# include "usbdrvasm20.inc"
|
||||
# else
|
||||
# error "USB_CFG_CLOCK_KHZ is not one of the supported non-crc-rates!"
|
||||
# endif
|
||||
#endif /* USB_CFG_CHECK_CRC */
|
||||
20
usbdrv/usbdrvasm.asm
Normal file
20
usbdrv/usbdrvasm.asm
Normal file
@ -0,0 +1,20 @@
|
||||
/* Name: usbdrvasm.asm
|
||||
* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
|
||||
* Author: Christian Starkjohann
|
||||
* Creation Date: 2006-03-01
|
||||
* Tabsize: 4
|
||||
* Copyright: (c) 2006 by OBJECTIVE DEVELOPMENT Software GmbH
|
||||
* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
|
||||
*/
|
||||
|
||||
/*
|
||||
General Description:
|
||||
The IAR compiler/assembler system prefers assembler files with file extension
|
||||
".asm". We simply provide this file as an alias for usbdrvasm.S.
|
||||
|
||||
Thanks to Oleg Semyonov for his help with the IAR tools port!
|
||||
*/
|
||||
|
||||
#include "usbdrvasm.S"
|
||||
|
||||
end
|
||||
392
usbdrv/usbdrvasm12.inc
Normal file
392
usbdrv/usbdrvasm12.inc
Normal file
@ -0,0 +1,392 @@
|
||||
/* Name: usbdrvasm12.inc
|
||||
* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
|
||||
* Author: Christian Starkjohann
|
||||
* Creation Date: 2004-12-29
|
||||
* Tabsize: 4
|
||||
* Copyright: (c) 2007 by OBJECTIVE DEVELOPMENT Software GmbH
|
||||
* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
|
||||
*/
|
||||
|
||||
/* Do not link this file! Link usbdrvasm.S instead, which includes the
|
||||
* appropriate implementation!
|
||||
*/
|
||||
|
||||
/*
|
||||
General Description:
|
||||
This file is the 12 MHz version of the asssembler part of the USB driver. It
|
||||
requires a 12 MHz crystal (not a ceramic resonator and not a calibrated RC
|
||||
oscillator).
|
||||
|
||||
See usbdrv.h for a description of the entire driver.
|
||||
|
||||
Since almost all of this code is timing critical, don't change unless you
|
||||
really know what you are doing! Many parts require not only a maximum number
|
||||
of CPU cycles, but even an exact number of cycles!
|
||||
|
||||
|
||||
Timing constraints according to spec (in bit times):
|
||||
timing subject min max CPUcycles
|
||||
---------------------------------------------------------------------------
|
||||
EOP of OUT/SETUP to sync pattern of DATA0 (both rx) 2 16 16-128
|
||||
EOP of IN to sync pattern of DATA0 (rx, then tx) 2 7.5 16-60
|
||||
DATAx (rx) to ACK/NAK/STALL (tx) 2 7.5 16-60
|
||||
*/
|
||||
|
||||
;Software-receiver engine. Strict timing! Don't change unless you can preserve timing!
|
||||
;interrupt response time: 4 cycles + insn running = 7 max if interrupts always enabled
|
||||
;max allowable interrupt latency: 34 cycles -> max 25 cycles interrupt disable
|
||||
;max stack usage: [ret(2), YL, SREG, YH, shift, x1, x2, x3, cnt, x4] = 11 bytes
|
||||
;Numbers in brackets are maximum cycles since SOF.
|
||||
USB_INTR_VECTOR:
|
||||
;order of registers pushed: YL, SREG [sofError], YH, shift, x1, x2, x3, cnt
|
||||
push YL ;2 [35] push only what is necessary to sync with edge ASAP
|
||||
in YL, SREG ;1 [37]
|
||||
push YL ;2 [39]
|
||||
;----------------------------------------------------------------------------
|
||||
; Synchronize with sync pattern:
|
||||
;----------------------------------------------------------------------------
|
||||
;sync byte (D-) pattern LSb to MSb: 01010100 [1 = idle = J, 0 = K]
|
||||
;sync up with J to K edge during sync pattern -- use fastest possible loops
|
||||
;The first part waits at most 1 bit long since we must be in sync pattern.
|
||||
;YL is guarenteed to be < 0x80 because I flag is clear. When we jump to
|
||||
;waitForJ, ensure that this prerequisite is met.
|
||||
waitForJ:
|
||||
inc YL
|
||||
sbis USBIN, USBMINUS
|
||||
brne waitForJ ; just make sure we have ANY timeout
|
||||
waitForK:
|
||||
;The following code results in a sampling window of 1/4 bit which meets the spec.
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
#if USB_COUNT_SOF
|
||||
lds YL, usbSofCount
|
||||
inc YL
|
||||
sts usbSofCount, YL
|
||||
#endif /* USB_COUNT_SOF */
|
||||
#ifdef USB_SOF_HOOK
|
||||
USB_SOF_HOOK
|
||||
#endif
|
||||
rjmp sofError
|
||||
foundK:
|
||||
;{3, 5} after falling D- edge, average delay: 4 cycles [we want 4 for center sampling]
|
||||
;we have 1 bit time for setup purposes, then sample again. Numbers in brackets
|
||||
;are cycles from center of first sync (double K) bit after the instruction
|
||||
push YH ;2 [2]
|
||||
lds YL, usbInputBufOffset;2 [4]
|
||||
clr YH ;1 [5]
|
||||
subi YL, lo8(-(usbRxBuf));1 [6]
|
||||
sbci YH, hi8(-(usbRxBuf));1 [7]
|
||||
|
||||
sbis USBIN, USBMINUS ;1 [8] we want two bits K [sample 1 cycle too early]
|
||||
rjmp haveTwoBitsK ;2 [10]
|
||||
pop YH ;2 [11] undo the push from before
|
||||
rjmp waitForK ;2 [13] this was not the end of sync, retry
|
||||
haveTwoBitsK:
|
||||
;----------------------------------------------------------------------------
|
||||
; push more registers and initialize values while we sample the first bits:
|
||||
;----------------------------------------------------------------------------
|
||||
push shift ;2 [16]
|
||||
push x1 ;2 [12]
|
||||
push x2 ;2 [14]
|
||||
|
||||
in x1, USBIN ;1 [17] <-- sample bit 0
|
||||
ldi shift, 0xff ;1 [18]
|
||||
bst x1, USBMINUS ;1 [19]
|
||||
bld shift, 0 ;1 [20]
|
||||
push x3 ;2 [22]
|
||||
push cnt ;2 [24]
|
||||
|
||||
in x2, USBIN ;1 [25] <-- sample bit 1
|
||||
ser x3 ;1 [26] [inserted init instruction]
|
||||
eor x1, x2 ;1 [27]
|
||||
bst x1, USBMINUS ;1 [28]
|
||||
bld shift, 1 ;1 [29]
|
||||
ldi cnt, USB_BUFSIZE;1 [30] [inserted init instruction]
|
||||
rjmp rxbit2 ;2 [32]
|
||||
|
||||
;----------------------------------------------------------------------------
|
||||
; Receiver loop (numbers in brackets are cycles within byte after instr)
|
||||
;----------------------------------------------------------------------------
|
||||
|
||||
unstuff0: ;1 (branch taken)
|
||||
andi x3, ~0x01 ;1 [15]
|
||||
mov x1, x2 ;1 [16] x2 contains last sampled (stuffed) bit
|
||||
in x2, USBIN ;1 [17] <-- sample bit 1 again
|
||||
ori shift, 0x01 ;1 [18]
|
||||
rjmp didUnstuff0 ;2 [20]
|
||||
|
||||
unstuff1: ;1 (branch taken)
|
||||
mov x2, x1 ;1 [21] x1 contains last sampled (stuffed) bit
|
||||
andi x3, ~0x02 ;1 [22]
|
||||
ori shift, 0x02 ;1 [23]
|
||||
nop ;1 [24]
|
||||
in x1, USBIN ;1 [25] <-- sample bit 2 again
|
||||
rjmp didUnstuff1 ;2 [27]
|
||||
|
||||
unstuff2: ;1 (branch taken)
|
||||
andi x3, ~0x04 ;1 [29]
|
||||
ori shift, 0x04 ;1 [30]
|
||||
mov x1, x2 ;1 [31] x2 contains last sampled (stuffed) bit
|
||||
nop ;1 [32]
|
||||
in x2, USBIN ;1 [33] <-- sample bit 3
|
||||
rjmp didUnstuff2 ;2 [35]
|
||||
|
||||
unstuff3: ;1 (branch taken)
|
||||
in x2, USBIN ;1 [34] <-- sample stuffed bit 3 [one cycle too late]
|
||||
andi x3, ~0x08 ;1 [35]
|
||||
ori shift, 0x08 ;1 [36]
|
||||
rjmp didUnstuff3 ;2 [38]
|
||||
|
||||
unstuff4: ;1 (branch taken)
|
||||
andi x3, ~0x10 ;1 [40]
|
||||
in x1, USBIN ;1 [41] <-- sample stuffed bit 4
|
||||
ori shift, 0x10 ;1 [42]
|
||||
rjmp didUnstuff4 ;2 [44]
|
||||
|
||||
unstuff5: ;1 (branch taken)
|
||||
andi x3, ~0x20 ;1 [48]
|
||||
in x2, USBIN ;1 [49] <-- sample stuffed bit 5
|
||||
ori shift, 0x20 ;1 [50]
|
||||
rjmp didUnstuff5 ;2 [52]
|
||||
|
||||
unstuff6: ;1 (branch taken)
|
||||
andi x3, ~0x40 ;1 [56]
|
||||
in x1, USBIN ;1 [57] <-- sample stuffed bit 6
|
||||
ori shift, 0x40 ;1 [58]
|
||||
rjmp didUnstuff6 ;2 [60]
|
||||
|
||||
; extra jobs done during bit interval:
|
||||
; bit 0: store, clear [SE0 is unreliable here due to bit dribbling in hubs]
|
||||
; bit 1: se0 check
|
||||
; bit 2: overflow check
|
||||
; bit 3: recovery from delay [bit 0 tasks took too long]
|
||||
; bit 4: none
|
||||
; bit 5: none
|
||||
; bit 6: none
|
||||
; bit 7: jump, eor
|
||||
rxLoop:
|
||||
eor x3, shift ;1 [0] reconstruct: x3 is 0 at bit locations we changed, 1 at others
|
||||
in x1, USBIN ;1 [1] <-- sample bit 0
|
||||
st y+, x3 ;2 [3] store data
|
||||
ser x3 ;1 [4]
|
||||
nop ;1 [5]
|
||||
eor x2, x1 ;1 [6]
|
||||
bst x2, USBMINUS;1 [7]
|
||||
bld shift, 0 ;1 [8]
|
||||
in x2, USBIN ;1 [9] <-- sample bit 1 (or possibly bit 0 stuffed)
|
||||
andi x2, USBMASK ;1 [10]
|
||||
breq se0 ;1 [11] SE0 check for bit 1
|
||||
andi shift, 0xf9 ;1 [12]
|
||||
didUnstuff0:
|
||||
breq unstuff0 ;1 [13]
|
||||
eor x1, x2 ;1 [14]
|
||||
bst x1, USBMINUS;1 [15]
|
||||
bld shift, 1 ;1 [16]
|
||||
rxbit2:
|
||||
in x1, USBIN ;1 [17] <-- sample bit 2 (or possibly bit 1 stuffed)
|
||||
andi shift, 0xf3 ;1 [18]
|
||||
breq unstuff1 ;1 [19] do remaining work for bit 1
|
||||
didUnstuff1:
|
||||
subi cnt, 1 ;1 [20]
|
||||
brcs overflow ;1 [21] loop control
|
||||
eor x2, x1 ;1 [22]
|
||||
bst x2, USBMINUS;1 [23]
|
||||
bld shift, 2 ;1 [24]
|
||||
in x2, USBIN ;1 [25] <-- sample bit 3 (or possibly bit 2 stuffed)
|
||||
andi shift, 0xe7 ;1 [26]
|
||||
breq unstuff2 ;1 [27]
|
||||
didUnstuff2:
|
||||
eor x1, x2 ;1 [28]
|
||||
bst x1, USBMINUS;1 [29]
|
||||
bld shift, 3 ;1 [30]
|
||||
didUnstuff3:
|
||||
andi shift, 0xcf ;1 [31]
|
||||
breq unstuff3 ;1 [32]
|
||||
in x1, USBIN ;1 [33] <-- sample bit 4
|
||||
eor x2, x1 ;1 [34]
|
||||
bst x2, USBMINUS;1 [35]
|
||||
bld shift, 4 ;1 [36]
|
||||
didUnstuff4:
|
||||
andi shift, 0x9f ;1 [37]
|
||||
breq unstuff4 ;1 [38]
|
||||
nop2 ;2 [40]
|
||||
in x2, USBIN ;1 [41] <-- sample bit 5
|
||||
eor x1, x2 ;1 [42]
|
||||
bst x1, USBMINUS;1 [43]
|
||||
bld shift, 5 ;1 [44]
|
||||
didUnstuff5:
|
||||
andi shift, 0x3f ;1 [45]
|
||||
breq unstuff5 ;1 [46]
|
||||
nop2 ;2 [48]
|
||||
in x1, USBIN ;1 [49] <-- sample bit 6
|
||||
eor x2, x1 ;1 [50]
|
||||
bst x2, USBMINUS;1 [51]
|
||||
bld shift, 6 ;1 [52]
|
||||
didUnstuff6:
|
||||
cpi shift, 0x02 ;1 [53]
|
||||
brlo unstuff6 ;1 [54]
|
||||
nop2 ;2 [56]
|
||||
in x2, USBIN ;1 [57] <-- sample bit 7
|
||||
eor x1, x2 ;1 [58]
|
||||
bst x1, USBMINUS;1 [59]
|
||||
bld shift, 7 ;1 [60]
|
||||
didUnstuff7:
|
||||
cpi shift, 0x04 ;1 [61]
|
||||
brsh rxLoop ;2 [63] loop control
|
||||
unstuff7:
|
||||
andi x3, ~0x80 ;1 [63]
|
||||
ori shift, 0x80 ;1 [64]
|
||||
in x2, USBIN ;1 [65] <-- sample stuffed bit 7
|
||||
nop ;1 [66]
|
||||
rjmp didUnstuff7 ;2 [68]
|
||||
|
||||
macro POP_STANDARD ; 12 cycles
|
||||
pop cnt
|
||||
pop x3
|
||||
pop x2
|
||||
pop x1
|
||||
pop shift
|
||||
pop YH
|
||||
endm
|
||||
macro POP_RETI ; 5 cycles
|
||||
pop YL
|
||||
out SREG, YL
|
||||
pop YL
|
||||
endm
|
||||
|
||||
#include "asmcommon.inc"
|
||||
|
||||
;----------------------------------------------------------------------------
|
||||
; Transmitting data
|
||||
;----------------------------------------------------------------------------
|
||||
|
||||
txByteLoop:
|
||||
txBitloop:
|
||||
stuffN1Delay: ; [03]
|
||||
ror shift ;[-5] [11] [59]
|
||||
brcc doExorN1 ;[-4] [60]
|
||||
subi x4, 1 ;[-3]
|
||||
brne commonN1 ;[-2]
|
||||
lsl shift ;[-1] compensate ror after rjmp stuffDelay
|
||||
nop ;[00] stuffing consists of just waiting 8 cycles
|
||||
rjmp stuffN1Delay ;[01] after ror, C bit is reliably clear
|
||||
|
||||
sendNakAndReti: ;0 [-19] 19 cycles until SOP
|
||||
ldi x3, USBPID_NAK ;1 [-18]
|
||||
rjmp usbSendX3 ;2 [-16]
|
||||
sendAckAndReti: ;0 [-19] 19 cycles until SOP
|
||||
ldi x3, USBPID_ACK ;1 [-18]
|
||||
rjmp usbSendX3 ;2 [-16]
|
||||
sendCntAndReti: ;0 [-17] 17 cycles until SOP
|
||||
mov x3, cnt ;1 [-16]
|
||||
usbSendX3: ;0 [-16]
|
||||
ldi YL, 20 ;1 [-15] 'x3' is R20
|
||||
ldi YH, 0 ;1 [-14]
|
||||
ldi cnt, 2 ;1 [-13]
|
||||
; rjmp usbSendAndReti fallthrough
|
||||
|
||||
; USB spec says:
|
||||
; idle = J
|
||||
; J = (D+ = 0), (D- = 1) or USBOUT = 0x01
|
||||
; K = (D+ = 1), (D- = 0) or USBOUT = 0x02
|
||||
; Spec allows 7.5 bit times from EOP to SOP for replies (= 60 cycles)
|
||||
|
||||
;usbSend:
|
||||
;pointer to data in 'Y'
|
||||
;number of bytes in 'cnt' -- including sync byte
|
||||
;uses: x1...x2, x4, shift, cnt, Y [x1 = mirror USBOUT, x2 = USBMASK, x4 = bitstuff cnt]
|
||||
;Numbers in brackets are time since first bit of sync pattern is sent (start of instruction)
|
||||
usbSendAndReti:
|
||||
in x2, USBDDR ;[-12] 12 cycles until SOP
|
||||
ori x2, USBMASK ;[-11]
|
||||
sbi USBOUT, USBMINUS ;[-10] prepare idle state; D+ and D- must have been 0 (no pullups)
|
||||
out USBDDR, x2 ;[-8] <--- acquire bus
|
||||
in x1, USBOUT ;[-7] port mirror for tx loop
|
||||
ldi shift, 0x40 ;[-6] sync byte is first byte sent (we enter loop after ror)
|
||||
ldi x2, USBMASK ;[-5]
|
||||
push x4 ;[-4]
|
||||
doExorN1:
|
||||
eor x1, x2 ;[-2] [06] [62]
|
||||
ldi x4, 6 ;[-1] [07] [63]
|
||||
commonN1:
|
||||
stuffN2Delay:
|
||||
out USBOUT, x1 ;[00] [08] [64] <--- set bit
|
||||
ror shift ;[01]
|
||||
brcc doExorN2 ;[02]
|
||||
subi x4, 1 ;[03]
|
||||
brne commonN2 ;[04]
|
||||
lsl shift ;[05] compensate ror after rjmp stuffDelay
|
||||
rjmp stuffN2Delay ;[06] after ror, C bit is reliably clear
|
||||
doExorN2:
|
||||
eor x1, x2 ;[04] [12]
|
||||
ldi x4, 6 ;[05] [13]
|
||||
commonN2:
|
||||
nop ;[06] [14]
|
||||
subi cnt, 171 ;[07] [15] trick: (3 * 171) & 0xff = 1
|
||||
out USBOUT, x1 ;[08] [16] <--- set bit
|
||||
brcs txBitloop ;[09] [25] [41]
|
||||
|
||||
stuff6Delay:
|
||||
ror shift ;[42] [50]
|
||||
brcc doExor6 ;[43]
|
||||
subi x4, 1 ;[44]
|
||||
brne common6 ;[45]
|
||||
lsl shift ;[46] compensate ror after rjmp stuffDelay
|
||||
nop ;[47] stuffing consists of just waiting 8 cycles
|
||||
rjmp stuff6Delay ;[48] after ror, C bit is reliably clear
|
||||
doExor6:
|
||||
eor x1, x2 ;[45] [53]
|
||||
ldi x4, 6 ;[46]
|
||||
common6:
|
||||
stuff7Delay:
|
||||
ror shift ;[47] [55]
|
||||
out USBOUT, x1 ;[48] <--- set bit
|
||||
brcc doExor7 ;[49]
|
||||
subi x4, 1 ;[50]
|
||||
brne common7 ;[51]
|
||||
lsl shift ;[52] compensate ror after rjmp stuffDelay
|
||||
rjmp stuff7Delay ;[53] after ror, C bit is reliably clear
|
||||
doExor7:
|
||||
eor x1, x2 ;[51] [59]
|
||||
ldi x4, 6 ;[52]
|
||||
common7:
|
||||
ld shift, y+ ;[53]
|
||||
tst cnt ;[55]
|
||||
out USBOUT, x1 ;[56] <--- set bit
|
||||
brne txByteLoop ;[57]
|
||||
|
||||
;make SE0:
|
||||
cbr x1, USBMASK ;[58] prepare SE0 [spec says EOP may be 15 to 18 cycles]
|
||||
lds x2, usbNewDeviceAddr;[59]
|
||||
lsl x2 ;[61] we compare with left shifted address
|
||||
subi YL, 2 + 20 ;[62] Only assign address on data packets, not ACK/NAK in x3
|
||||
sbci YH, 0 ;[63]
|
||||
out USBOUT, x1 ;[00] <-- out SE0 -- from now 2 bits = 16 cycles until bus idle
|
||||
;2006-03-06: moved transfer of new address to usbDeviceAddr from C-Code to asm:
|
||||
;set address only after data packet was sent, not after handshake
|
||||
breq skipAddrAssign ;[01]
|
||||
sts usbDeviceAddr, x2 ; if not skipped: SE0 is one cycle longer
|
||||
skipAddrAssign:
|
||||
;end of usbDeviceAddress transfer
|
||||
ldi x2, 1<<USB_INTR_PENDING_BIT;[03] int0 occurred during TX -- clear pending flag
|
||||
USB_STORE_PENDING(x2) ;[04]
|
||||
ori x1, USBIDLE ;[05]
|
||||
in x2, USBDDR ;[06]
|
||||
cbr x2, USBMASK ;[07] set both pins to input
|
||||
mov x3, x1 ;[08]
|
||||
cbr x3, USBMASK ;[09] configure no pullup on both pins
|
||||
pop x4 ;[10]
|
||||
nop2 ;[12]
|
||||
nop2 ;[14]
|
||||
out USBOUT, x1 ;[16] <-- out J (idle) -- end of SE0 (EOP signal)
|
||||
out USBDDR, x2 ;[17] <-- release bus now
|
||||
out USBOUT, x3 ;[18] <-- ensure no pull-up resistors are active
|
||||
rjmp doReturn
|
||||
749
usbdrv/usbdrvasm128.inc
Normal file
749
usbdrv/usbdrvasm128.inc
Normal file
@ -0,0 +1,749 @@
|
||||
/* Name: usbdrvasm128.inc
|
||||
* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
|
||||
* Author: Christian Starkjohann
|
||||
* Creation Date: 2008-10-11
|
||||
* Tabsize: 4
|
||||
* Copyright: (c) 2008 by OBJECTIVE DEVELOPMENT Software GmbH
|
||||
* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
|
||||
*/
|
||||
|
||||
/* Do not link this file! Link usbdrvasm.S instead, which includes the
|
||||
* appropriate implementation!
|
||||
*/
|
||||
|
||||
/*
|
||||
General Description:
|
||||
This file is the 12.8 MHz version of the USB driver. It is intended for use
|
||||
with the internal RC oscillator. Although 12.8 MHz is outside the guaranteed
|
||||
calibration range of the oscillator, almost all AVRs can reach this frequency.
|
||||
This version contains a phase locked loop in the receiver routine to cope with
|
||||
slight clock rate deviations of up to +/- 1%.
|
||||
|
||||
See usbdrv.h for a description of the entire driver.
|
||||
|
||||
LIMITATIONS
|
||||
===========
|
||||
Although it may seem very handy to save the crystal and use the internal
|
||||
RC oscillator of the CPU, this method (and this module) has some serious
|
||||
limitations:
|
||||
(1) The guaranteed calibration range of the oscillator is only 8.1 MHz.
|
||||
They typical range is 14.5 MHz and most AVRs can actually reach this rate.
|
||||
(2) Writing EEPROM and Flash may be unreliable (short data lifetime) since
|
||||
the write procedure is timed from the RC oscillator.
|
||||
(3) End Of Packet detection (SE0) should be in bit 1, bit it is only checked
|
||||
if bits 0 and 1 both read as 0 on D- and D+ read as 0 in the middle. This may
|
||||
cause problems with old hubs which delay SE0 by up to one cycle.
|
||||
(4) Code size is much larger than that of the other modules.
|
||||
|
||||
Since almost all of this code is timing critical, don't change unless you
|
||||
really know what you are doing! Many parts require not only a maximum number
|
||||
of CPU cycles, but even an exact number of cycles!
|
||||
|
||||
Implementation notes:
|
||||
======================
|
||||
min frequency: 67 cycles for 8 bit -> 12.5625 MHz
|
||||
max frequency: 69.286 cycles for 8 bit -> 12.99 MHz
|
||||
nominal frequency: 12.77 MHz ( = sqrt(min * max))
|
||||
|
||||
sampling positions: (next even number in range [+/- 0.5])
|
||||
cycle index range: 0 ... 66
|
||||
bits:
|
||||
.5, 8.875, 17.25, 25.625, 34, 42.375, 50.75, 59.125
|
||||
[0/1], [9], [17], [25/+26], [34], [+42/43], [51], [59]
|
||||
|
||||
bit number: 0 1 2 3 4 5 6 7
|
||||
spare cycles 1 2 1 2 1 1 1 0
|
||||
|
||||
operations to perform: duration cycle
|
||||
----------------
|
||||
eor fix, shift 1 -> 00
|
||||
andi phase, USBMASK 1 -> 08
|
||||
breq se0 1 -> 16 (moved to 11)
|
||||
st y+, data 2 -> 24, 25
|
||||
mov data, fix 1 -> 33
|
||||
ser data 1 -> 41
|
||||
subi cnt, 1 1 -> 49
|
||||
brcs overflow 1 -> 50
|
||||
|
||||
layout of samples and operations:
|
||||
[##] = sample bit
|
||||
<##> = sample phase
|
||||
*##* = operation
|
||||
|
||||
0: *00* [01] 02 03 04 <05> 06 07
|
||||
1: *08* [09] 10 11 12 <13> 14 15 *16*
|
||||
2: [17] 18 19 20 <21> 22 23
|
||||
3: *24* *25* [26] 27 28 29 <30> 31 32
|
||||
4: *33* [34] 35 36 37 <38> 39 40
|
||||
5: *41* [42] 43 44 45 <46> 47 48
|
||||
6: *49* *50* [51] 52 53 54 <55> 56 57 58
|
||||
7: [59] 60 61 62 <63> 64 65 66
|
||||
*****************************************************************************/
|
||||
|
||||
/* we prefer positive expressions (do if condition) instead of negative
|
||||
* (skip if condition), therefore use defines for skip instructions:
|
||||
*/
|
||||
#define ifioclr sbis
|
||||
#define ifioset sbic
|
||||
#define ifrclr sbrs
|
||||
#define ifrset sbrc
|
||||
|
||||
/* The registers "fix" and "data" swap their meaning during the loop. Use
|
||||
* defines to keep their name constant.
|
||||
*/
|
||||
#define fix x2
|
||||
#define data x1
|
||||
#undef phase /* phase has a default definition to x4 */
|
||||
#define phase x3
|
||||
|
||||
|
||||
USB_INTR_VECTOR:
|
||||
;order of registers pushed: YL, SREG [sofError], YH, shift, x1, x2, x3, cnt, r0
|
||||
push YL ;2 push only what is necessary to sync with edge ASAP
|
||||
in YL, SREG ;1
|
||||
push YL ;2
|
||||
;----------------------------------------------------------------------------
|
||||
; Synchronize with sync pattern:
|
||||
;----------------------------------------------------------------------------
|
||||
;sync byte (D-) pattern LSb to MSb: 01010100 [1 = idle = J, 0 = K]
|
||||
;sync up with J to K edge during sync pattern -- use fastest possible loops
|
||||
;The first part waits at most 1 bit long since we must be in sync pattern.
|
||||
;YL is guarenteed to be < 0x80 because I flag is clear. When we jump to
|
||||
;waitForJ, ensure that this prerequisite is met.
|
||||
waitForJ:
|
||||
inc YL
|
||||
sbis USBIN, USBMINUS
|
||||
brne waitForJ ; just make sure we have ANY timeout
|
||||
waitForK:
|
||||
;The following code results in a sampling window of 1/4 bit which meets the spec.
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS ;[0]
|
||||
rjmp foundK ;[1]
|
||||
#if USB_COUNT_SOF
|
||||
lds YL, usbSofCount
|
||||
inc YL
|
||||
sts usbSofCount, YL
|
||||
#endif /* USB_COUNT_SOF */
|
||||
#ifdef USB_SOF_HOOK
|
||||
USB_SOF_HOOK
|
||||
#endif
|
||||
rjmp sofError
|
||||
|
||||
foundK:
|
||||
;{3, 5} after falling D- edge, average delay: 4 cycles [we want 4 for center sampling]
|
||||
;we have 1 bit time for setup purposes, then sample again. Numbers in brackets
|
||||
;are cycles from center of first sync (double K) bit after the instruction
|
||||
push YH ;[2]
|
||||
lds YL, usbInputBufOffset;[4]
|
||||
clr YH ;[6]
|
||||
subi YL, lo8(-(usbRxBuf));[7]
|
||||
sbci YH, hi8(-(usbRxBuf));[8]
|
||||
|
||||
sbis USBIN, USBMINUS ;[9] we want two bits K [we want to sample at 8 + 4 - 1.5 = 10.5]
|
||||
rjmp haveTwoBitsK ;[10]
|
||||
pop YH ;[11] undo the push from before
|
||||
rjmp waitForK ;[13] this was not the end of sync, retry
|
||||
haveTwoBitsK:
|
||||
;----------------------------------------------------------------------------
|
||||
; push more registers and initialize values while we sample the first bits:
|
||||
;----------------------------------------------------------------------------
|
||||
#define fix x2
|
||||
#define data x1
|
||||
|
||||
push shift ;[12]
|
||||
push x1 ;[14]
|
||||
push x2 ;[16]
|
||||
ldi shift, 0x80 ;[18] prevent bit-unstuffing but init low bits to 0
|
||||
ifioset USBIN, USBMINUS ;[19] [01] <--- bit 0 [10.5 + 8 = 18.5]
|
||||
ori shift, 1<<0 ;[02]
|
||||
push x3 ;[03]
|
||||
push cnt ;[05]
|
||||
push r0 ;[07]
|
||||
ifioset USBIN, USBMINUS ;[09] <--- bit 1
|
||||
ori shift, 1<<1 ;[10]
|
||||
ser fix ;[11]
|
||||
ldi cnt, USB_BUFSIZE ;[12]
|
||||
mov data, shift ;[13]
|
||||
lsl shift ;[14]
|
||||
nop2 ;[15]
|
||||
ifioset USBIN, USBMINUS ;[17] <--- bit 2
|
||||
ori data, 3<<2 ;[18] store in bit 2 AND bit 3
|
||||
eor shift, data ;[19] do nrzi decoding
|
||||
andi data, 1<<3 ;[20]
|
||||
in phase, USBIN ;[21] <- phase
|
||||
brne jumpToEntryAfterSet ;[22] if USBMINS at bit 3 was 1
|
||||
nop ;[23]
|
||||
rjmp entryAfterClr ;[24]
|
||||
jumpToEntryAfterSet:
|
||||
rjmp entryAfterSet ;[24]
|
||||
|
||||
;----------------------------------------------------------------------------
|
||||
; Receiver loop (numbers in brackets are cycles within byte after instr)
|
||||
;----------------------------------------------------------------------------
|
||||
#undef fix
|
||||
#define fix x1
|
||||
#undef data
|
||||
#define data x2
|
||||
|
||||
bit7IsSet:
|
||||
ifrclr phase, USBMINUS ;[62] check phase only if D- changed
|
||||
lpm ;[63]
|
||||
in phase, USBIN ;[64] <- phase (one cycle too late)
|
||||
ori shift, 1 << 7 ;[65]
|
||||
nop ;[66]
|
||||
;;;;rjmp bit0AfterSet ; -> [00] == [67] moved block up to save jump
|
||||
bit0AfterSet:
|
||||
eor fix, shift ;[00]
|
||||
#undef fix
|
||||
#define fix x2
|
||||
#undef data
|
||||
#define data x1 /* we now have result in data, fix is reset to 0xff */
|
||||
ifioclr USBIN, USBMINUS ;[01] <--- sample 0
|
||||
rjmp bit0IsClr ;[02]
|
||||
andi shift, ~(7 << 0) ;[03]
|
||||
breq unstuff0s ;[04]
|
||||
in phase, USBIN ;[05] <- phase
|
||||
rjmp bit1AfterSet ;[06]
|
||||
unstuff0s:
|
||||
in phase, USBIN ;[06] <- phase (one cycle too late)
|
||||
andi fix, ~(1 << 0) ;[07]
|
||||
ifioclr USBIN, USBMINUS ;[00]
|
||||
ifioset USBIN, USBPLUS ;[01]
|
||||
rjmp bit0IsClr ;[02] executed if first expr false or second true
|
||||
se0AndStore: ; executed only if both bits 0
|
||||
st y+, x1 ;[15/17] cycles after start of byte
|
||||
rjmp se0 ;[17/19]
|
||||
|
||||
bit0IsClr:
|
||||
ifrset phase, USBMINUS ;[04] check phase only if D- changed
|
||||
lpm ;[05]
|
||||
in phase, USBIN ;[06] <- phase (one cycle too late)
|
||||
ori shift, 1 << 0 ;[07]
|
||||
bit1AfterClr:
|
||||
andi phase, USBMASK ;[08]
|
||||
ifioset USBIN, USBMINUS ;[09] <--- sample 1
|
||||
rjmp bit1IsSet ;[10]
|
||||
breq se0AndStore ;[11] if D- was 0 in bits 0 AND 1 and D+ was 0 in between, we have SE0
|
||||
andi shift, ~(7 << 1) ;[12]
|
||||
in phase, USBIN ;[13] <- phase
|
||||
breq unstuff1c ;[14]
|
||||
rjmp bit2AfterClr ;[15]
|
||||
unstuff1c:
|
||||
andi fix, ~(1 << 1) ;[16]
|
||||
nop2 ;[08]
|
||||
nop2 ;[10]
|
||||
bit1IsSet:
|
||||
ifrclr phase, USBMINUS ;[12] check phase only if D- changed
|
||||
lpm ;[13]
|
||||
in phase, USBIN ;[14] <- phase (one cycle too late)
|
||||
ori shift, 1 << 1 ;[15]
|
||||
nop ;[16]
|
||||
bit2AfterSet:
|
||||
ifioclr USBIN, USBMINUS ;[17] <--- sample 2
|
||||
rjmp bit2IsClr ;[18]
|
||||
andi shift, ~(7 << 2) ;[19]
|
||||
breq unstuff2s ;[20]
|
||||
in phase, USBIN ;[21] <- phase
|
||||
rjmp bit3AfterSet ;[22]
|
||||
unstuff2s:
|
||||
in phase, USBIN ;[22] <- phase (one cycle too late)
|
||||
andi fix, ~(1 << 2) ;[23]
|
||||
nop2 ;[16]
|
||||
nop2 ;[18]
|
||||
bit2IsClr:
|
||||
ifrset phase, USBMINUS ;[20] check phase only if D- changed
|
||||
lpm ;[21]
|
||||
in phase, USBIN ;[22] <- phase (one cycle too late)
|
||||
ori shift, 1 << 2 ;[23]
|
||||
bit3AfterClr:
|
||||
st y+, data ;[24]
|
||||
entryAfterClr:
|
||||
ifioset USBIN, USBMINUS ;[26] <--- sample 3
|
||||
rjmp bit3IsSet ;[27]
|
||||
andi shift, ~(7 << 3) ;[28]
|
||||
breq unstuff3c ;[29]
|
||||
in phase, USBIN ;[30] <- phase
|
||||
rjmp bit4AfterClr ;[31]
|
||||
unstuff3c:
|
||||
in phase, USBIN ;[31] <- phase (one cycle too late)
|
||||
andi fix, ~(1 << 3) ;[32]
|
||||
nop2 ;[25]
|
||||
nop2 ;[27]
|
||||
bit3IsSet:
|
||||
ifrclr phase, USBMINUS ;[29] check phase only if D- changed
|
||||
lpm ;[30]
|
||||
in phase, USBIN ;[31] <- phase (one cycle too late)
|
||||
ori shift, 1 << 3 ;[32]
|
||||
bit4AfterSet:
|
||||
mov data, fix ;[33] undo this move by swapping defines
|
||||
#undef fix
|
||||
#define fix x1
|
||||
#undef data
|
||||
#define data x2
|
||||
ifioclr USBIN, USBMINUS ;[34] <--- sample 4
|
||||
rjmp bit4IsClr ;[35]
|
||||
andi shift, ~(7 << 4) ;[36]
|
||||
breq unstuff4s ;[37]
|
||||
in phase, USBIN ;[38] <- phase
|
||||
rjmp bit5AfterSet ;[39]
|
||||
unstuff4s:
|
||||
in phase, USBIN ;[39] <- phase (one cycle too late)
|
||||
andi fix, ~(1 << 4) ;[40]
|
||||
nop2 ;[33]
|
||||
nop2 ;[35]
|
||||
bit4IsClr:
|
||||
ifrset phase, USBMINUS ;[37] check phase only if D- changed
|
||||
lpm ;[38]
|
||||
in phase, USBIN ;[39] <- phase (one cycle too late)
|
||||
ori shift, 1 << 4 ;[40]
|
||||
bit5AfterClr:
|
||||
ser data ;[41]
|
||||
ifioset USBIN, USBMINUS ;[42] <--- sample 5
|
||||
rjmp bit5IsSet ;[43]
|
||||
andi shift, ~(7 << 5) ;[44]
|
||||
breq unstuff5c ;[45]
|
||||
in phase, USBIN ;[46] <- phase
|
||||
rjmp bit6AfterClr ;[47]
|
||||
unstuff5c:
|
||||
in phase, USBIN ;[47] <- phase (one cycle too late)
|
||||
andi fix, ~(1 << 5) ;[48]
|
||||
nop2 ;[41]
|
||||
nop2 ;[43]
|
||||
bit5IsSet:
|
||||
ifrclr phase, USBMINUS ;[45] check phase only if D- changed
|
||||
lpm ;[46]
|
||||
in phase, USBIN ;[47] <- phase (one cycle too late)
|
||||
ori shift, 1 << 5 ;[48]
|
||||
bit6AfterSet:
|
||||
subi cnt, 1 ;[49]
|
||||
brcs jumpToOverflow ;[50]
|
||||
ifioclr USBIN, USBMINUS ;[51] <--- sample 6
|
||||
rjmp bit6IsClr ;[52]
|
||||
andi shift, ~(3 << 6) ;[53]
|
||||
cpi shift, 2 ;[54]
|
||||
in phase, USBIN ;[55] <- phase
|
||||
brlt unstuff6s ;[56]
|
||||
rjmp bit7AfterSet ;[57]
|
||||
|
||||
jumpToOverflow:
|
||||
rjmp overflow
|
||||
|
||||
unstuff6s:
|
||||
andi fix, ~(1 << 6) ;[50]
|
||||
lpm ;[51]
|
||||
bit6IsClr:
|
||||
ifrset phase, USBMINUS ;[54] check phase only if D- changed
|
||||
lpm ;[55]
|
||||
in phase, USBIN ;[56] <- phase (one cycle too late)
|
||||
ori shift, 1 << 6 ;[57]
|
||||
nop ;[58]
|
||||
bit7AfterClr:
|
||||
ifioset USBIN, USBMINUS ;[59] <--- sample 7
|
||||
rjmp bit7IsSet ;[60]
|
||||
andi shift, ~(1 << 7) ;[61]
|
||||
cpi shift, 4 ;[62]
|
||||
in phase, USBIN ;[63] <- phase
|
||||
brlt unstuff7c ;[64]
|
||||
rjmp bit0AfterClr ;[65] -> [00] == [67]
|
||||
unstuff7c:
|
||||
andi fix, ~(1 << 7) ;[58]
|
||||
nop ;[59]
|
||||
rjmp bit7IsSet ;[60]
|
||||
|
||||
bit7IsClr:
|
||||
ifrset phase, USBMINUS ;[62] check phase only if D- changed
|
||||
lpm ;[63]
|
||||
in phase, USBIN ;[64] <- phase (one cycle too late)
|
||||
ori shift, 1 << 7 ;[65]
|
||||
nop ;[66]
|
||||
;;;;rjmp bit0AfterClr ; -> [00] == [67] moved block up to save jump
|
||||
bit0AfterClr:
|
||||
eor fix, shift ;[00]
|
||||
#undef fix
|
||||
#define fix x2
|
||||
#undef data
|
||||
#define data x1 /* we now have result in data, fix is reset to 0xff */
|
||||
ifioset USBIN, USBMINUS ;[01] <--- sample 0
|
||||
rjmp bit0IsSet ;[02]
|
||||
andi shift, ~(7 << 0) ;[03]
|
||||
breq unstuff0c ;[04]
|
||||
in phase, USBIN ;[05] <- phase
|
||||
rjmp bit1AfterClr ;[06]
|
||||
unstuff0c:
|
||||
in phase, USBIN ;[06] <- phase (one cycle too late)
|
||||
andi fix, ~(1 << 0) ;[07]
|
||||
ifioclr USBIN, USBMINUS ;[00]
|
||||
ifioset USBIN, USBPLUS ;[01]
|
||||
rjmp bit0IsSet ;[02] executed if first expr false or second true
|
||||
rjmp se0AndStore ;[03] executed only if both bits 0
|
||||
bit0IsSet:
|
||||
ifrclr phase, USBMINUS ;[04] check phase only if D- changed
|
||||
lpm ;[05]
|
||||
in phase, USBIN ;[06] <- phase (one cycle too late)
|
||||
ori shift, 1 << 0 ;[07]
|
||||
bit1AfterSet:
|
||||
andi shift, ~(7 << 1) ;[08] compensated by "ori shift, 1<<1" if bit1IsClr
|
||||
ifioclr USBIN, USBMINUS ;[09] <--- sample 1
|
||||
rjmp bit1IsClr ;[10]
|
||||
breq unstuff1s ;[11]
|
||||
nop2 ;[12] do not check for SE0 if bit 0 was 1
|
||||
in phase, USBIN ;[14] <- phase (one cycle too late)
|
||||
rjmp bit2AfterSet ;[15]
|
||||
unstuff1s:
|
||||
in phase, USBIN ;[13] <- phase
|
||||
andi fix, ~(1 << 1) ;[14]
|
||||
lpm ;[07]
|
||||
nop2 ;[10]
|
||||
bit1IsClr:
|
||||
ifrset phase, USBMINUS ;[12] check phase only if D- changed
|
||||
lpm ;[13]
|
||||
in phase, USBIN ;[14] <- phase (one cycle too late)
|
||||
ori shift, 1 << 1 ;[15]
|
||||
nop ;[16]
|
||||
bit2AfterClr:
|
||||
ifioset USBIN, USBMINUS ;[17] <--- sample 2
|
||||
rjmp bit2IsSet ;[18]
|
||||
andi shift, ~(7 << 2) ;[19]
|
||||
breq unstuff2c ;[20]
|
||||
in phase, USBIN ;[21] <- phase
|
||||
rjmp bit3AfterClr ;[22]
|
||||
unstuff2c:
|
||||
in phase, USBIN ;[22] <- phase (one cycle too late)
|
||||
andi fix, ~(1 << 2) ;[23]
|
||||
nop2 ;[16]
|
||||
nop2 ;[18]
|
||||
bit2IsSet:
|
||||
ifrclr phase, USBMINUS ;[20] check phase only if D- changed
|
||||
lpm ;[21]
|
||||
in phase, USBIN ;[22] <- phase (one cycle too late)
|
||||
ori shift, 1 << 2 ;[23]
|
||||
bit3AfterSet:
|
||||
st y+, data ;[24]
|
||||
entryAfterSet:
|
||||
ifioclr USBIN, USBMINUS ;[26] <--- sample 3
|
||||
rjmp bit3IsClr ;[27]
|
||||
andi shift, ~(7 << 3) ;[28]
|
||||
breq unstuff3s ;[29]
|
||||
in phase, USBIN ;[30] <- phase
|
||||
rjmp bit4AfterSet ;[31]
|
||||
unstuff3s:
|
||||
in phase, USBIN ;[31] <- phase (one cycle too late)
|
||||
andi fix, ~(1 << 3) ;[32]
|
||||
nop2 ;[25]
|
||||
nop2 ;[27]
|
||||
bit3IsClr:
|
||||
ifrset phase, USBMINUS ;[29] check phase only if D- changed
|
||||
lpm ;[30]
|
||||
in phase, USBIN ;[31] <- phase (one cycle too late)
|
||||
ori shift, 1 << 3 ;[32]
|
||||
bit4AfterClr:
|
||||
mov data, fix ;[33] undo this move by swapping defines
|
||||
#undef fix
|
||||
#define fix x1
|
||||
#undef data
|
||||
#define data x2
|
||||
ifioset USBIN, USBMINUS ;[34] <--- sample 4
|
||||
rjmp bit4IsSet ;[35]
|
||||
andi shift, ~(7 << 4) ;[36]
|
||||
breq unstuff4c ;[37]
|
||||
in phase, USBIN ;[38] <- phase
|
||||
rjmp bit5AfterClr ;[39]
|
||||
unstuff4c:
|
||||
in phase, USBIN ;[39] <- phase (one cycle too late)
|
||||
andi fix, ~(1 << 4) ;[40]
|
||||
nop2 ;[33]
|
||||
nop2 ;[35]
|
||||
bit4IsSet:
|
||||
ifrclr phase, USBMINUS ;[37] check phase only if D- changed
|
||||
lpm ;[38]
|
||||
in phase, USBIN ;[39] <- phase (one cycle too late)
|
||||
ori shift, 1 << 4 ;[40]
|
||||
bit5AfterSet:
|
||||
ser data ;[41]
|
||||
ifioclr USBIN, USBMINUS ;[42] <--- sample 5
|
||||
rjmp bit5IsClr ;[43]
|
||||
andi shift, ~(7 << 5) ;[44]
|
||||
breq unstuff5s ;[45]
|
||||
in phase, USBIN ;[46] <- phase
|
||||
rjmp bit6AfterSet ;[47]
|
||||
unstuff5s:
|
||||
in phase, USBIN ;[47] <- phase (one cycle too late)
|
||||
andi fix, ~(1 << 5) ;[48]
|
||||
nop2 ;[41]
|
||||
nop2 ;[43]
|
||||
bit5IsClr:
|
||||
ifrset phase, USBMINUS ;[45] check phase only if D- changed
|
||||
lpm ;[46]
|
||||
in phase, USBIN ;[47] <- phase (one cycle too late)
|
||||
ori shift, 1 << 5 ;[48]
|
||||
bit6AfterClr:
|
||||
subi cnt, 1 ;[49]
|
||||
brcs overflow ;[50]
|
||||
ifioset USBIN, USBMINUS ;[51] <--- sample 6
|
||||
rjmp bit6IsSet ;[52]
|
||||
andi shift, ~(3 << 6) ;[53]
|
||||
cpi shift, 2 ;[54]
|
||||
in phase, USBIN ;[55] <- phase
|
||||
brlt unstuff6c ;[56]
|
||||
rjmp bit7AfterClr ;[57]
|
||||
unstuff6c:
|
||||
andi fix, ~(1 << 6) ;[50]
|
||||
lpm ;[51]
|
||||
bit6IsSet:
|
||||
ifrclr phase, USBMINUS ;[54] check phase only if D- changed
|
||||
lpm ;[55]
|
||||
in phase, USBIN ;[56] <- phase (one cycle too late)
|
||||
ori shift, 1 << 6 ;[57]
|
||||
bit7AfterSet:
|
||||
ifioclr USBIN, USBMINUS ;[59] <--- sample 7
|
||||
rjmp bit7IsClr ;[60]
|
||||
andi shift, ~(1 << 7) ;[61]
|
||||
cpi shift, 4 ;[62]
|
||||
in phase, USBIN ;[63] <- phase
|
||||
brlt unstuff7s ;[64]
|
||||
rjmp bit0AfterSet ;[65] -> [00] == [67]
|
||||
unstuff7s:
|
||||
andi fix, ~(1 << 7) ;[58]
|
||||
nop ;[59]
|
||||
rjmp bit7IsClr ;[60]
|
||||
|
||||
macro POP_STANDARD ; 14 cycles
|
||||
pop r0
|
||||
pop cnt
|
||||
pop x3
|
||||
pop x2
|
||||
pop x1
|
||||
pop shift
|
||||
pop YH
|
||||
endm
|
||||
macro POP_RETI ; 5 cycles
|
||||
pop YL
|
||||
out SREG, YL
|
||||
pop YL
|
||||
endm
|
||||
|
||||
#include "asmcommon.inc"
|
||||
|
||||
;----------------------------------------------------------------------------
|
||||
; Transmitting data
|
||||
;----------------------------------------------------------------------------
|
||||
|
||||
txByteLoop:
|
||||
txBitloop:
|
||||
stuffN1Delay: ; [03]
|
||||
ror shift ;[-5] [11] [63]
|
||||
brcc doExorN1 ;[-4] [64]
|
||||
subi x3, 1 ;[-3]
|
||||
brne commonN1 ;[-2]
|
||||
lsl shift ;[-1] compensate ror after rjmp stuffDelay
|
||||
nop ;[00] stuffing consists of just waiting 8 cycles
|
||||
rjmp stuffN1Delay ;[01] after ror, C bit is reliably clear
|
||||
|
||||
sendNakAndReti:
|
||||
ldi cnt, USBPID_NAK ;[-19]
|
||||
rjmp sendCntAndReti ;[-18]
|
||||
sendAckAndReti:
|
||||
ldi cnt, USBPID_ACK ;[-17]
|
||||
sendCntAndReti:
|
||||
mov r0, cnt ;[-16]
|
||||
ldi YL, 0 ;[-15] R0 address is 0
|
||||
ldi YH, 0 ;[-14]
|
||||
ldi cnt, 2 ;[-13]
|
||||
; rjmp usbSendAndReti fallthrough
|
||||
|
||||
; USB spec says:
|
||||
; idle = J
|
||||
; J = (D+ = 0), (D- = 1) or USBOUT = 0x01
|
||||
; K = (D+ = 1), (D- = 0) or USBOUT = 0x02
|
||||
; Spec allows 7.5 bit times from EOP to SOP for replies (= 60 cycles)
|
||||
|
||||
;usbSend:
|
||||
;pointer to data in 'Y'
|
||||
;number of bytes in 'cnt' -- including sync byte
|
||||
;uses: x1...x3, shift, cnt, Y [x1 = mirror USBOUT, x2 = USBMASK, x3 = bitstuff cnt]
|
||||
;Numbers in brackets are time since first bit of sync pattern is sent (start of instruction)
|
||||
usbSendAndReti:
|
||||
in x2, USBDDR ;[-10] 10 cycles until SOP
|
||||
ori x2, USBMASK ;[-9]
|
||||
sbi USBOUT, USBMINUS ;[-8] prepare idle state; D+ and D- must have been 0 (no pullups)
|
||||
out USBDDR, x2 ;[-6] <--- acquire bus
|
||||
in x1, USBOUT ;[-5] port mirror for tx loop
|
||||
ldi shift, 0x40 ;[-4] sync byte is first byte sent (we enter loop after ror)
|
||||
ldi x2, USBMASK ;[-3]
|
||||
doExorN1:
|
||||
eor x1, x2 ;[-2] [06] [62]
|
||||
ldi x3, 6 ;[-1] [07] [63]
|
||||
commonN1:
|
||||
stuffN2Delay:
|
||||
out USBOUT, x1 ;[00] [08] [64] <--- set bit
|
||||
ror shift ;[01]
|
||||
brcc doExorN2 ;[02]
|
||||
subi x3, 1 ;[03]
|
||||
brne commonN2 ;[04]
|
||||
lsl shift ;[05] compensate ror after rjmp stuffDelay
|
||||
rjmp stuffN2Delay ;[06] after ror, C bit is reliably clear
|
||||
doExorN2:
|
||||
eor x1, x2 ;[04] [12]
|
||||
ldi x3, 6 ;[05] [13]
|
||||
commonN2:
|
||||
nop2 ;[06] [14]
|
||||
subi cnt, 171 ;[08] [16] trick: (3 * 171) & 0xff = 1
|
||||
out USBOUT, x1 ;[09] [17] <--- set bit
|
||||
brcs txBitloop ;[10] [27] [44]
|
||||
|
||||
stuff6Delay:
|
||||
ror shift ;[45] [53]
|
||||
brcc doExor6 ;[46]
|
||||
subi x3, 1 ;[47]
|
||||
brne common6 ;[48]
|
||||
lsl shift ;[49] compensate ror after rjmp stuffDelay
|
||||
nop ;[50] stuffing consists of just waiting 8 cycles
|
||||
rjmp stuff6Delay ;[51] after ror, C bit is reliably clear
|
||||
doExor6:
|
||||
eor x1, x2 ;[48] [56]
|
||||
ldi x3, 6 ;[49]
|
||||
common6:
|
||||
stuff7Delay:
|
||||
ror shift ;[50] [58]
|
||||
out USBOUT, x1 ;[51] <--- set bit
|
||||
brcc doExor7 ;[52]
|
||||
subi x3, 1 ;[53]
|
||||
brne common7 ;[54]
|
||||
lsl shift ;[55] compensate ror after rjmp stuffDelay
|
||||
rjmp stuff7Delay ;[56] after ror, C bit is reliably clear
|
||||
doExor7:
|
||||
eor x1, x2 ;[54] [62]
|
||||
ldi x3, 6 ;[55]
|
||||
common7:
|
||||
ld shift, y+ ;[56]
|
||||
nop ;[58]
|
||||
tst cnt ;[59]
|
||||
out USBOUT, x1 ;[60] [00]<--- set bit
|
||||
brne txByteLoop ;[61] [01]
|
||||
;make SE0:
|
||||
cbr x1, USBMASK ;[02] prepare SE0 [spec says EOP may be 15 to 18 cycles]
|
||||
lds x2, usbNewDeviceAddr;[03]
|
||||
lsl x2 ;[05] we compare with left shifted address
|
||||
subi YL, 2 + 0 ;[06] Only assign address on data packets, not ACK/NAK in r0
|
||||
sbci YH, 0 ;[07]
|
||||
out USBOUT, x1 ;[00] <-- out SE0 -- from now 2 bits = 16 cycles until bus idle
|
||||
;2006-03-06: moved transfer of new address to usbDeviceAddr from C-Code to asm:
|
||||
;set address only after data packet was sent, not after handshake
|
||||
breq skipAddrAssign ;[01]
|
||||
sts usbDeviceAddr, x2 ; if not skipped: SE0 is one cycle longer
|
||||
skipAddrAssign:
|
||||
;end of usbDeviceAddress transfer
|
||||
ldi x2, 1<<USB_INTR_PENDING_BIT;[03] int0 occurred during TX -- clear pending flag
|
||||
USB_STORE_PENDING(x2) ;[04]
|
||||
ori x1, USBIDLE ;[05]
|
||||
in x2, USBDDR ;[06]
|
||||
cbr x2, USBMASK ;[07] set both pins to input
|
||||
mov x3, x1 ;[08]
|
||||
cbr x3, USBMASK ;[09] configure no pullup on both pins
|
||||
lpm ;[10]
|
||||
lpm ;[13]
|
||||
out USBOUT, x1 ;[16] <-- out J (idle) -- end of SE0 (EOP signal)
|
||||
out USBDDR, x2 ;[17] <-- release bus now
|
||||
out USBOUT, x3 ;[18] <-- ensure no pull-up resistors are active
|
||||
rjmp doReturn
|
||||
|
||||
|
||||
|
||||
/*****************************************************************************
|
||||
The following PHP script generates a code skeleton for the receiver routine:
|
||||
|
||||
<?php
|
||||
|
||||
function printCmdBuffer($thisBit)
|
||||
{
|
||||
global $cycle;
|
||||
|
||||
$nextBit = ($thisBit + 1) % 8;
|
||||
$s = ob_get_contents();
|
||||
ob_end_clean();
|
||||
$s = str_replace("#", $thisBit, $s);
|
||||
$s = str_replace("@", $nextBit, $s);
|
||||
$lines = explode("\n", $s);
|
||||
for($i = 0; $i < count($lines); $i++){
|
||||
$s = $lines[$i];
|
||||
if(ereg("\\[([0-9-][0-9])\\]", $s, $regs)){
|
||||
$c = $cycle + (int)$regs[1];
|
||||
$s = ereg_replace("\\[[0-9-][0-9]\\]", sprintf("[%02d]", $c), $s);
|
||||
}
|
||||
if(strlen($s) > 0)
|
||||
echo "$s\n";
|
||||
}
|
||||
}
|
||||
|
||||
function printBit($isAfterSet, $bitNum)
|
||||
{
|
||||
ob_start();
|
||||
if($isAfterSet){
|
||||
?>
|
||||
ifioclr USBIN, USBMINUS ;[00] <--- sample
|
||||
rjmp bit#IsClr ;[01]
|
||||
andi shift, ~(7 << #) ;[02]
|
||||
breq unstuff#s ;[03]
|
||||
in phase, USBIN ;[04] <- phase
|
||||
rjmp bit@AfterSet ;[05]
|
||||
unstuff#s:
|
||||
in phase, USBIN ;[05] <- phase (one cycle too late)
|
||||
andi fix, ~(1 << #) ;[06]
|
||||
nop2 ;[-1]
|
||||
nop2 ;[01]
|
||||
bit#IsClr:
|
||||
ifrset phase, USBMINUS ;[03] check phase only if D- changed
|
||||
lpm ;[04]
|
||||
in phase, USBIN ;[05] <- phase (one cycle too late)
|
||||
ori shift, 1 << # ;[06]
|
||||
<?php
|
||||
}else{
|
||||
?>
|
||||
ifioset USBIN, USBMINUS ;[00] <--- sample
|
||||
rjmp bit#IsSet ;[01]
|
||||
andi shift, ~(7 << #) ;[02]
|
||||
breq unstuff#c ;[03]
|
||||
in phase, USBIN ;[04] <- phase
|
||||
rjmp bit@AfterClr ;[05]
|
||||
unstuff#c:
|
||||
in phase, USBIN ;[05] <- phase (one cycle too late)
|
||||
andi fix, ~(1 << #) ;[06]
|
||||
nop2 ;[-1]
|
||||
nop2 ;[01]
|
||||
bit#IsSet:
|
||||
ifrclr phase, USBMINUS ;[03] check phase only if D- changed
|
||||
lpm ;[04]
|
||||
in phase, USBIN ;[05] <- phase (one cycle too late)
|
||||
ori shift, 1 << # ;[06]
|
||||
<?php
|
||||
}
|
||||
printCmdBuffer($bitNum);
|
||||
}
|
||||
|
||||
$bitStartCycles = array(1, 9, 17, 26, 34, 42, 51, 59);
|
||||
for($i = 0; $i < 16; $i++){
|
||||
$bit = $i % 8;
|
||||
$emitClrCode = ($i + (int)($i / 8)) % 2;
|
||||
$cycle = $bitStartCycles[$bit];
|
||||
if($emitClrCode){
|
||||
printf("bit%dAfterClr:\n", $bit);
|
||||
}else{
|
||||
printf("bit%dAfterSet:\n", $bit);
|
||||
}
|
||||
ob_start();
|
||||
echo " ***** ;[-1]\n";
|
||||
printCmdBuffer($bit);
|
||||
printBit(!$emitClrCode, $bit);
|
||||
if($i == 7)
|
||||
echo "\n";
|
||||
}
|
||||
|
||||
?>
|
||||
*****************************************************************************/
|
||||
422
usbdrv/usbdrvasm15.inc
Normal file
422
usbdrv/usbdrvasm15.inc
Normal file
@ -0,0 +1,422 @@
|
||||
/* Name: usbdrvasm15.inc
|
||||
* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
|
||||
* Author: contributed by V. Bosch
|
||||
* Creation Date: 2007-08-06
|
||||
* Tabsize: 4
|
||||
* Copyright: (c) 2007 by OBJECTIVE DEVELOPMENT Software GmbH
|
||||
* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
|
||||
*/
|
||||
|
||||
/* Do not link this file! Link usbdrvasm.S instead, which includes the
|
||||
* appropriate implementation!
|
||||
*/
|
||||
|
||||
/*
|
||||
General Description:
|
||||
This file is the 15 MHz version of the asssembler part of the USB driver. It
|
||||
requires a 15 MHz crystal (not a ceramic resonator and not a calibrated RC
|
||||
oscillator).
|
||||
|
||||
See usbdrv.h for a description of the entire driver.
|
||||
|
||||
Since almost all of this code is timing critical, don't change unless you
|
||||
really know what you are doing! Many parts require not only a maximum number
|
||||
of CPU cycles, but even an exact number of cycles!
|
||||
*/
|
||||
|
||||
;max stack usage: [ret(2), YL, SREG, YH, bitcnt, shift, x1, x2, x3, x4, cnt] = 12 bytes
|
||||
;nominal frequency: 15 MHz -> 10.0 cycles per bit, 80.0 cycles per byte
|
||||
; Numbers in brackets are clocks counted from center of last sync bit
|
||||
; when instruction starts
|
||||
|
||||
;----------------------------------------------------------------------------
|
||||
; order of registers pushed:
|
||||
; YL, SREG [sofError] YH, shift, x1, x2, x3, bitcnt, cnt, x4
|
||||
;----------------------------------------------------------------------------
|
||||
USB_INTR_VECTOR:
|
||||
push YL ;2 push only what is necessary to sync with edge ASAP
|
||||
in YL, SREG ;1
|
||||
push YL ;2
|
||||
;----------------------------------------------------------------------------
|
||||
; Synchronize with sync pattern:
|
||||
;
|
||||
; sync byte (D-) pattern LSb to MSb: 01010100 [1 = idle = J, 0 = K]
|
||||
; sync up with J to K edge during sync pattern -- use fastest possible loops
|
||||
;The first part waits at most 1 bit long since we must be in sync pattern.
|
||||
;YL is guarenteed to be < 0x80 because I flag is clear. When we jump to
|
||||
;waitForJ, ensure that this prerequisite is met.
|
||||
waitForJ:
|
||||
inc YL
|
||||
sbis USBIN, USBMINUS
|
||||
brne waitForJ ; just make sure we have ANY timeout
|
||||
;-------------------------------------------------------------------------------
|
||||
; The following code results in a sampling window of < 1/4 bit
|
||||
; which meets the spec.
|
||||
;-------------------------------------------------------------------------------
|
||||
waitForK: ;-
|
||||
sbis USBIN, USBMINUS ;1 [00] <-- sample
|
||||
rjmp foundK ;2 [01]
|
||||
sbis USBIN, USBMINUS ; <-- sample
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS ; <-- sample
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS ; <-- sample
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS ; <-- sample
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS ; <-- sample
|
||||
rjmp foundK
|
||||
#if USB_COUNT_SOF
|
||||
lds YL, usbSofCount
|
||||
inc YL
|
||||
sts usbSofCount, YL
|
||||
#endif /* USB_COUNT_SOF */
|
||||
#ifdef USB_SOF_HOOK
|
||||
USB_SOF_HOOK
|
||||
#endif
|
||||
rjmp sofError
|
||||
;------------------------------------------------------------------------------
|
||||
; {3, 5} after falling D- edge, average delay: 4 cycles [we want 5 for
|
||||
; center sampling]
|
||||
; we have 1 bit time for setup purposes, then sample again.
|
||||
; Numbers in brackets are cycles from center of first sync (double K)
|
||||
; bit after the instruction
|
||||
;------------------------------------------------------------------------------
|
||||
foundK: ;- [02]
|
||||
lds YL, usbInputBufOffset;2 [03+04] tx loop
|
||||
push YH ;2 [05+06]
|
||||
clr YH ;1 [07]
|
||||
subi YL, lo8(-(usbRxBuf)) ;1 [08] [rx loop init]
|
||||
sbci YH, hi8(-(usbRxBuf)) ;1 [09] [rx loop init]
|
||||
push shift ;2 [10+11]
|
||||
ser shift ;1 [12]
|
||||
sbis USBIN, USBMINUS ;1 [-1] [13] <--sample:we want two bits K (sample 1 cycle too early)
|
||||
rjmp haveTwoBitsK ;2 [00] [14]
|
||||
pop shift ;2 [15+16] undo the push from before
|
||||
pop YH ;2 [17+18] undo the push from before
|
||||
rjmp waitForK ;2 [19+20] this was not the end of sync, retry
|
||||
; The entire loop from waitForK until rjmp waitForK above must not exceed two
|
||||
; bit times (= 20 cycles).
|
||||
|
||||
;----------------------------------------------------------------------------
|
||||
; push more registers and initialize values while we sample the first bits:
|
||||
;----------------------------------------------------------------------------
|
||||
haveTwoBitsK: ;- [01]
|
||||
push x1 ;2 [02+03]
|
||||
push x2 ;2 [04+05]
|
||||
push x3 ;2 [06+07]
|
||||
push bitcnt ;2 [08+09]
|
||||
in x1, USBIN ;1 [00] [10] <-- sample bit 0
|
||||
bst x1, USBMINUS ;1 [01]
|
||||
bld shift, 0 ;1 [02]
|
||||
push cnt ;2 [03+04]
|
||||
ldi cnt, USB_BUFSIZE ;1 [05]
|
||||
push x4 ;2 [06+07] tx loop
|
||||
rjmp rxLoop ;2 [08]
|
||||
;----------------------------------------------------------------------------
|
||||
; Receiver loop (numbers in brackets are cycles within byte after instr)
|
||||
;----------------------------------------------------------------------------
|
||||
unstuff0: ;- [07] (branch taken)
|
||||
andi x3, ~0x01 ;1 [08]
|
||||
mov x1, x2 ;1 [09] x2 contains last sampled (stuffed) bit
|
||||
in x2, USBIN ;1 [00] [10] <-- sample bit 1 again
|
||||
andi x2, USBMASK ;1 [01]
|
||||
breq se0Hop ;1 [02] SE0 check for bit 1
|
||||
ori shift, 0x01 ;1 [03] 0b00000001
|
||||
nop ;1 [04]
|
||||
rjmp didUnstuff0 ;2 [05]
|
||||
;-----------------------------------------------------
|
||||
unstuff1: ;- [05] (branch taken)
|
||||
mov x2, x1 ;1 [06] x1 contains last sampled (stuffed) bit
|
||||
andi x3, ~0x02 ;1 [07]
|
||||
ori shift, 0x02 ;1 [08] 0b00000010
|
||||
nop ;1 [09]
|
||||
in x1, USBIN ;1 [00] [10] <-- sample bit 2 again
|
||||
andi x1, USBMASK ;1 [01]
|
||||
breq se0Hop ;1 [02] SE0 check for bit 2
|
||||
rjmp didUnstuff1 ;2 [03]
|
||||
;-----------------------------------------------------
|
||||
unstuff2: ;- [05] (branch taken)
|
||||
andi x3, ~0x04 ;1 [06]
|
||||
ori shift, 0x04 ;1 [07] 0b00000100
|
||||
mov x1, x2 ;1 [08] x2 contains last sampled (stuffed) bit
|
||||
nop ;1 [09]
|
||||
in x2, USBIN ;1 [00] [10] <-- sample bit 3
|
||||
andi x2, USBMASK ;1 [01]
|
||||
breq se0Hop ;1 [02] SE0 check for bit 3
|
||||
rjmp didUnstuff2 ;2 [03]
|
||||
;-----------------------------------------------------
|
||||
unstuff3: ;- [00] [10] (branch taken)
|
||||
in x2, USBIN ;1 [01] [11] <-- sample stuffed bit 3 one cycle too late
|
||||
andi x2, USBMASK ;1 [02]
|
||||
breq se0Hop ;1 [03] SE0 check for stuffed bit 3
|
||||
andi x3, ~0x08 ;1 [04]
|
||||
ori shift, 0x08 ;1 [05] 0b00001000
|
||||
rjmp didUnstuff3 ;2 [06]
|
||||
;----------------------------------------------------------------------------
|
||||
; extra jobs done during bit interval:
|
||||
;
|
||||
; bit 0: store, clear [SE0 is unreliable here due to bit dribbling in hubs],
|
||||
; overflow check, jump to the head of rxLoop
|
||||
; bit 1: SE0 check
|
||||
; bit 2: SE0 check, recovery from delay [bit 0 tasks took too long]
|
||||
; bit 3: SE0 check, recovery from delay [bit 0 tasks took too long]
|
||||
; bit 4: SE0 check, none
|
||||
; bit 5: SE0 check, none
|
||||
; bit 6: SE0 check, none
|
||||
; bit 7: SE0 check, reconstruct: x3 is 0 at bit locations we changed, 1 at others
|
||||
;----------------------------------------------------------------------------
|
||||
rxLoop: ;- [09]
|
||||
in x2, USBIN ;1 [00] [10] <-- sample bit 1 (or possibly bit 0 stuffed)
|
||||
andi x2, USBMASK ;1 [01]
|
||||
brne SkipSe0Hop ;1 [02]
|
||||
se0Hop: ;- [02]
|
||||
rjmp se0 ;2 [03] SE0 check for bit 1
|
||||
SkipSe0Hop: ;- [03]
|
||||
ser x3 ;1 [04]
|
||||
andi shift, 0xf9 ;1 [05] 0b11111001
|
||||
breq unstuff0 ;1 [06]
|
||||
didUnstuff0: ;- [06]
|
||||
eor x1, x2 ;1 [07]
|
||||
bst x1, USBMINUS ;1 [08]
|
||||
bld shift, 1 ;1 [09]
|
||||
in x1, USBIN ;1 [00] [10] <-- sample bit 2 (or possibly bit 1 stuffed)
|
||||
andi x1, USBMASK ;1 [01]
|
||||
breq se0Hop ;1 [02] SE0 check for bit 2
|
||||
andi shift, 0xf3 ;1 [03] 0b11110011
|
||||
breq unstuff1 ;1 [04] do remaining work for bit 1
|
||||
didUnstuff1: ;- [04]
|
||||
eor x2, x1 ;1 [05]
|
||||
bst x2, USBMINUS ;1 [06]
|
||||
bld shift, 2 ;1 [07]
|
||||
nop2 ;2 [08+09]
|
||||
in x2, USBIN ;1 [00] [10] <-- sample bit 3 (or possibly bit 2 stuffed)
|
||||
andi x2, USBMASK ;1 [01]
|
||||
breq se0Hop ;1 [02] SE0 check for bit 3
|
||||
andi shift, 0xe7 ;1 [03] 0b11100111
|
||||
breq unstuff2 ;1 [04]
|
||||
didUnstuff2: ;- [04]
|
||||
eor x1, x2 ;1 [05]
|
||||
bst x1, USBMINUS ;1 [06]
|
||||
bld shift, 3 ;1 [07]
|
||||
didUnstuff3: ;- [07]
|
||||
andi shift, 0xcf ;1 [08] 0b11001111
|
||||
breq unstuff3 ;1 [09]
|
||||
in x1, USBIN ;1 [00] [10] <-- sample bit 4
|
||||
andi x1, USBMASK ;1 [01]
|
||||
breq se0Hop ;1 [02] SE0 check for bit 4
|
||||
eor x2, x1 ;1 [03]
|
||||
bst x2, USBMINUS ;1 [04]
|
||||
bld shift, 4 ;1 [05]
|
||||
didUnstuff4: ;- [05]
|
||||
andi shift, 0x9f ;1 [06] 0b10011111
|
||||
breq unstuff4 ;1 [07]
|
||||
nop2 ;2 [08+09]
|
||||
in x2, USBIN ;1 [00] [10] <-- sample bit 5
|
||||
andi x2, USBMASK ;1 [01]
|
||||
breq se0 ;1 [02] SE0 check for bit 5
|
||||
eor x1, x2 ;1 [03]
|
||||
bst x1, USBMINUS ;1 [04]
|
||||
bld shift, 5 ;1 [05]
|
||||
didUnstuff5: ;- [05]
|
||||
andi shift, 0x3f ;1 [06] 0b00111111
|
||||
breq unstuff5 ;1 [07]
|
||||
nop2 ;2 [08+09]
|
||||
in x1, USBIN ;1 [00] [10] <-- sample bit 6
|
||||
andi x1, USBMASK ;1 [01]
|
||||
breq se0 ;1 [02] SE0 check for bit 6
|
||||
eor x2, x1 ;1 [03]
|
||||
bst x2, USBMINUS ;1 [04]
|
||||
bld shift, 6 ;1 [05]
|
||||
didUnstuff6: ;- [05]
|
||||
cpi shift, 0x02 ;1 [06] 0b00000010
|
||||
brlo unstuff6 ;1 [07]
|
||||
nop2 ;2 [08+09]
|
||||
in x2, USBIN ;1 [00] [10] <-- sample bit 7
|
||||
andi x2, USBMASK ;1 [01]
|
||||
breq se0 ;1 [02] SE0 check for bit 7
|
||||
eor x1, x2 ;1 [03]
|
||||
bst x1, USBMINUS ;1 [04]
|
||||
bld shift, 7 ;1 [05]
|
||||
didUnstuff7: ;- [05]
|
||||
cpi shift, 0x04 ;1 [06] 0b00000100
|
||||
brlo unstuff7 ;1 [07]
|
||||
eor x3, shift ;1 [08] reconstruct: x3 is 0 at bit locations we changed, 1 at others
|
||||
nop ;1 [09]
|
||||
in x1, USBIN ;1 [00] [10] <-- sample bit 0
|
||||
st y+, x3 ;2 [01+02] store data
|
||||
eor x2, x1 ;1 [03]
|
||||
bst x2, USBMINUS ;1 [04]
|
||||
bld shift, 0 ;1 [05]
|
||||
subi cnt, 1 ;1 [06]
|
||||
brcs overflow ;1 [07]
|
||||
rjmp rxLoop ;2 [08]
|
||||
;-----------------------------------------------------
|
||||
unstuff4: ;- [08]
|
||||
andi x3, ~0x10 ;1 [09]
|
||||
in x1, USBIN ;1 [00] [10] <-- sample stuffed bit 4
|
||||
andi x1, USBMASK ;1 [01]
|
||||
breq se0 ;1 [02] SE0 check for stuffed bit 4
|
||||
ori shift, 0x10 ;1 [03]
|
||||
rjmp didUnstuff4 ;2 [04]
|
||||
;-----------------------------------------------------
|
||||
unstuff5: ;- [08]
|
||||
ori shift, 0x20 ;1 [09]
|
||||
in x2, USBIN ;1 [00] [10] <-- sample stuffed bit 5
|
||||
andi x2, USBMASK ;1 [01]
|
||||
breq se0 ;1 [02] SE0 check for stuffed bit 5
|
||||
andi x3, ~0x20 ;1 [03]
|
||||
rjmp didUnstuff5 ;2 [04]
|
||||
;-----------------------------------------------------
|
||||
unstuff6: ;- [08]
|
||||
andi x3, ~0x40 ;1 [09]
|
||||
in x1, USBIN ;1 [00] [10] <-- sample stuffed bit 6
|
||||
andi x1, USBMASK ;1 [01]
|
||||
breq se0 ;1 [02] SE0 check for stuffed bit 6
|
||||
ori shift, 0x40 ;1 [03]
|
||||
rjmp didUnstuff6 ;2 [04]
|
||||
;-----------------------------------------------------
|
||||
unstuff7: ;- [08]
|
||||
andi x3, ~0x80 ;1 [09]
|
||||
in x2, USBIN ;1 [00] [10] <-- sample stuffed bit 7
|
||||
andi x2, USBMASK ;1 [01]
|
||||
breq se0 ;1 [02] SE0 check for stuffed bit 7
|
||||
ori shift, 0x80 ;1 [03]
|
||||
rjmp didUnstuff7 ;2 [04]
|
||||
|
||||
macro POP_STANDARD ; 16 cycles
|
||||
pop x4
|
||||
pop cnt
|
||||
pop bitcnt
|
||||
pop x3
|
||||
pop x2
|
||||
pop x1
|
||||
pop shift
|
||||
pop YH
|
||||
endm
|
||||
macro POP_RETI ; 5 cycles
|
||||
pop YL
|
||||
out SREG, YL
|
||||
pop YL
|
||||
endm
|
||||
|
||||
#include "asmcommon.inc"
|
||||
|
||||
;---------------------------------------------------------------------------
|
||||
; USB spec says:
|
||||
; idle = J
|
||||
; J = (D+ = 0), (D- = 1)
|
||||
; K = (D+ = 1), (D- = 0)
|
||||
; Spec allows 7.5 bit times from EOP to SOP for replies
|
||||
;---------------------------------------------------------------------------
|
||||
bitstuffN: ;- [04]
|
||||
eor x1, x4 ;1 [05]
|
||||
clr x2 ;1 [06]
|
||||
nop ;1 [07]
|
||||
rjmp didStuffN ;1 [08]
|
||||
;---------------------------------------------------------------------------
|
||||
bitstuff6: ;- [04]
|
||||
eor x1, x4 ;1 [05]
|
||||
clr x2 ;1 [06]
|
||||
rjmp didStuff6 ;1 [07]
|
||||
;---------------------------------------------------------------------------
|
||||
bitstuff7: ;- [02]
|
||||
eor x1, x4 ;1 [03]
|
||||
clr x2 ;1 [06]
|
||||
nop ;1 [05]
|
||||
rjmp didStuff7 ;1 [06]
|
||||
;---------------------------------------------------------------------------
|
||||
sendNakAndReti: ;- [-19]
|
||||
ldi x3, USBPID_NAK ;1 [-18]
|
||||
rjmp sendX3AndReti ;1 [-17]
|
||||
;---------------------------------------------------------------------------
|
||||
sendAckAndReti: ;- [-17]
|
||||
ldi cnt, USBPID_ACK ;1 [-16]
|
||||
sendCntAndReti: ;- [-16]
|
||||
mov x3, cnt ;1 [-15]
|
||||
sendX3AndReti: ;- [-15]
|
||||
ldi YL, 20 ;1 [-14] x3==r20 address is 20
|
||||
ldi YH, 0 ;1 [-13]
|
||||
ldi cnt, 2 ;1 [-12]
|
||||
; rjmp usbSendAndReti fallthrough
|
||||
;---------------------------------------------------------------------------
|
||||
;usbSend:
|
||||
;pointer to data in 'Y'
|
||||
;number of bytes in 'cnt' -- including sync byte [range 2 ... 12]
|
||||
;uses: x1...x4, btcnt, shift, cnt, Y
|
||||
;Numbers in brackets are time since first bit of sync pattern is sent
|
||||
;We need not to match the transfer rate exactly because the spec demands
|
||||
;only 1.5% precision anyway.
|
||||
usbSendAndReti: ;- [-13] 13 cycles until SOP
|
||||
in x2, USBDDR ;1 [-12]
|
||||
ori x2, USBMASK ;1 [-11]
|
||||
sbi USBOUT, USBMINUS ;2 [-09-10] prepare idle state; D+ and D- must have been 0 (no pullups)
|
||||
in x1, USBOUT ;1 [-08] port mirror for tx loop
|
||||
out USBDDR, x2 ;1 [-07] <- acquire bus
|
||||
; need not init x2 (bitstuff history) because sync starts with 0
|
||||
ldi x4, USBMASK ;1 [-06] exor mask
|
||||
ldi shift, 0x80 ;1 [-05] sync byte is first byte sent
|
||||
ldi bitcnt, 6 ;1 [-04]
|
||||
txBitLoop: ;- [-04] [06]
|
||||
sbrs shift, 0 ;1 [-03] [07]
|
||||
eor x1, x4 ;1 [-02] [08]
|
||||
ror shift ;1 [-01] [09]
|
||||
didStuffN: ;- [09]
|
||||
out USBOUT, x1 ;1 [00] [10] <-- out N
|
||||
ror x2 ;1 [01]
|
||||
cpi x2, 0xfc ;1 [02]
|
||||
brcc bitstuffN ;1 [03]
|
||||
dec bitcnt ;1 [04]
|
||||
brne txBitLoop ;1 [05]
|
||||
sbrs shift, 0 ;1 [06]
|
||||
eor x1, x4 ;1 [07]
|
||||
ror shift ;1 [08]
|
||||
didStuff6: ;- [08]
|
||||
nop ;1 [09]
|
||||
out USBOUT, x1 ;1 [00] [10] <-- out 6
|
||||
ror x2 ;1 [01]
|
||||
cpi x2, 0xfc ;1 [02]
|
||||
brcc bitstuff6 ;1 [03]
|
||||
sbrs shift, 0 ;1 [04]
|
||||
eor x1, x4 ;1 [05]
|
||||
ror shift ;1 [06]
|
||||
ror x2 ;1 [07]
|
||||
didStuff7: ;- [07]
|
||||
ldi bitcnt, 6 ;1 [08]
|
||||
cpi x2, 0xfc ;1 [09]
|
||||
out USBOUT, x1 ;1 [00] [10] <-- out 7
|
||||
brcc bitstuff7 ;1 [01]
|
||||
ld shift, y+ ;2 [02+03]
|
||||
dec cnt ;1 [04]
|
||||
brne txBitLoop ;1 [05]
|
||||
makeSE0:
|
||||
cbr x1, USBMASK ;1 [06] prepare SE0 [spec says EOP may be 19 to 23 cycles]
|
||||
lds x2, usbNewDeviceAddr;2 [07+08]
|
||||
lsl x2 ;1 [09] we compare with left shifted address
|
||||
;2006-03-06: moved transfer of new address to usbDeviceAddr from C-Code to asm:
|
||||
;set address only after data packet was sent, not after handshake
|
||||
out USBOUT, x1 ;1 [00] [10] <-- out SE0-- from now 2 bits==20 cycl. until bus idle
|
||||
subi YL, 20 + 2 ;1 [01] Only assign address on data packets, not ACK/NAK in x3
|
||||
sbci YH, 0 ;1 [02]
|
||||
breq skipAddrAssign ;1 [03]
|
||||
sts usbDeviceAddr, x2 ;2 [04+05] if not skipped: SE0 is one cycle longer
|
||||
;----------------------------------------------------------------------------
|
||||
;end of usbDeviceAddress transfer
|
||||
skipAddrAssign: ;- [03/04]
|
||||
ldi x2, 1<<USB_INTR_PENDING_BIT ;1 [05] int0 occurred during TX -- clear pending flag
|
||||
USB_STORE_PENDING(x2) ;1 [06]
|
||||
ori x1, USBIDLE ;1 [07]
|
||||
in x2, USBDDR ;1 [08]
|
||||
cbr x2, USBMASK ;1 [09] set both pins to input
|
||||
mov x3, x1 ;1 [10]
|
||||
cbr x3, USBMASK ;1 [11] configure no pullup on both pins
|
||||
ldi x4, 3 ;1 [12]
|
||||
se0Delay: ;- [12] [15]
|
||||
dec x4 ;1 [13] [16]
|
||||
brne se0Delay ;1 [14] [17]
|
||||
nop2 ;2 [18+19]
|
||||
out USBOUT, x1 ;1 [20] <--out J (idle) -- end of SE0 (EOP sig.)
|
||||
out USBDDR, x2 ;1 [21] <--release bus now
|
||||
out USBOUT, x3 ;1 [22] <--ensure no pull-up resistors are active
|
||||
rjmp doReturn ;1 [23]
|
||||
;---------------------------------------------------------------------------
|
||||
345
usbdrv/usbdrvasm16.inc
Normal file
345
usbdrv/usbdrvasm16.inc
Normal file
@ -0,0 +1,345 @@
|
||||
/* Name: usbdrvasm16.inc
|
||||
* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
|
||||
* Author: Christian Starkjohann
|
||||
* Creation Date: 2007-06-15
|
||||
* Tabsize: 4
|
||||
* Copyright: (c) 2007 by OBJECTIVE DEVELOPMENT Software GmbH
|
||||
* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
|
||||
*/
|
||||
|
||||
/* Do not link this file! Link usbdrvasm.S instead, which includes the
|
||||
* appropriate implementation!
|
||||
*/
|
||||
|
||||
/*
|
||||
General Description:
|
||||
This file is the 16 MHz version of the asssembler part of the USB driver. It
|
||||
requires a 16 MHz crystal (not a ceramic resonator and not a calibrated RC
|
||||
oscillator).
|
||||
|
||||
See usbdrv.h for a description of the entire driver.
|
||||
|
||||
Since almost all of this code is timing critical, don't change unless you
|
||||
really know what you are doing! Many parts require not only a maximum number
|
||||
of CPU cycles, but even an exact number of cycles!
|
||||
*/
|
||||
|
||||
;max stack usage: [ret(2), YL, SREG, YH, bitcnt, shift, x1, x2, x3, x4, cnt] = 12 bytes
|
||||
;nominal frequency: 16 MHz -> 10.6666666 cycles per bit, 85.333333333 cycles per byte
|
||||
; Numbers in brackets are clocks counted from center of last sync bit
|
||||
; when instruction starts
|
||||
|
||||
USB_INTR_VECTOR:
|
||||
;order of registers pushed: YL, SREG YH, [sofError], bitcnt, shift, x1, x2, x3, x4, cnt
|
||||
push YL ;[-25] push only what is necessary to sync with edge ASAP
|
||||
in YL, SREG ;[-23]
|
||||
push YL ;[-22]
|
||||
push YH ;[-20]
|
||||
;----------------------------------------------------------------------------
|
||||
; Synchronize with sync pattern:
|
||||
;----------------------------------------------------------------------------
|
||||
;sync byte (D-) pattern LSb to MSb: 01010100 [1 = idle = J, 0 = K]
|
||||
;sync up with J to K edge during sync pattern -- use fastest possible loops
|
||||
;The first part waits at most 1 bit long since we must be in sync pattern.
|
||||
;YL is guarenteed to be < 0x80 because I flag is clear. When we jump to
|
||||
;waitForJ, ensure that this prerequisite is met.
|
||||
waitForJ:
|
||||
inc YL
|
||||
sbis USBIN, USBMINUS
|
||||
brne waitForJ ; just make sure we have ANY timeout
|
||||
waitForK:
|
||||
;The following code results in a sampling window of < 1/4 bit which meets the spec.
|
||||
sbis USBIN, USBMINUS ;[-15]
|
||||
rjmp foundK ;[-14]
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
#if USB_COUNT_SOF
|
||||
lds YL, usbSofCount
|
||||
inc YL
|
||||
sts usbSofCount, YL
|
||||
#endif /* USB_COUNT_SOF */
|
||||
#ifdef USB_SOF_HOOK
|
||||
USB_SOF_HOOK
|
||||
#endif
|
||||
rjmp sofError
|
||||
foundK: ;[-12]
|
||||
;{3, 5} after falling D- edge, average delay: 4 cycles [we want 5 for center sampling]
|
||||
;we have 1 bit time for setup purposes, then sample again. Numbers in brackets
|
||||
;are cycles from center of first sync (double K) bit after the instruction
|
||||
push bitcnt ;[-12]
|
||||
; [---] ;[-11]
|
||||
lds YL, usbInputBufOffset;[-10]
|
||||
; [---] ;[-9]
|
||||
clr YH ;[-8]
|
||||
subi YL, lo8(-(usbRxBuf));[-7] [rx loop init]
|
||||
sbci YH, hi8(-(usbRxBuf));[-6] [rx loop init]
|
||||
push shift ;[-5]
|
||||
; [---] ;[-4]
|
||||
ldi bitcnt, 0x55 ;[-3] [rx loop init]
|
||||
sbis USBIN, USBMINUS ;[-2] we want two bits K (sample 2 cycles too early)
|
||||
rjmp haveTwoBitsK ;[-1]
|
||||
pop shift ;[0] undo the push from before
|
||||
pop bitcnt ;[2] undo the push from before
|
||||
rjmp waitForK ;[4] this was not the end of sync, retry
|
||||
; The entire loop from waitForK until rjmp waitForK above must not exceed two
|
||||
; bit times (= 21 cycles).
|
||||
|
||||
;----------------------------------------------------------------------------
|
||||
; push more registers and initialize values while we sample the first bits:
|
||||
;----------------------------------------------------------------------------
|
||||
haveTwoBitsK:
|
||||
push x1 ;[1]
|
||||
push x2 ;[3]
|
||||
push x3 ;[5]
|
||||
ldi shift, 0 ;[7]
|
||||
ldi x3, 1<<4 ;[8] [rx loop init] first sample is inverse bit, compensate that
|
||||
push x4 ;[9] == leap
|
||||
|
||||
in x1, USBIN ;[11] <-- sample bit 0
|
||||
andi x1, USBMASK ;[12]
|
||||
bst x1, USBMINUS ;[13]
|
||||
bld shift, 7 ;[14]
|
||||
push cnt ;[15]
|
||||
ldi leap, 0 ;[17] [rx loop init]
|
||||
ldi cnt, USB_BUFSIZE;[18] [rx loop init]
|
||||
rjmp rxbit1 ;[19] arrives at [21]
|
||||
|
||||
;----------------------------------------------------------------------------
|
||||
; Receiver loop (numbers in brackets are cycles within byte after instr)
|
||||
;----------------------------------------------------------------------------
|
||||
|
||||
; duration of unstuffing code should be 10.66666667 cycles. We adjust "leap"
|
||||
; accordingly to approximate this value in the long run.
|
||||
|
||||
unstuff6:
|
||||
andi x2, USBMASK ;[03]
|
||||
ori x3, 1<<6 ;[04] will not be shifted any more
|
||||
andi shift, ~0x80;[05]
|
||||
mov x1, x2 ;[06] sampled bit 7 is actually re-sampled bit 6
|
||||
subi leap, -1 ;[07] total duration = 11 bits -> subtract 1/3
|
||||
rjmp didUnstuff6 ;[08]
|
||||
|
||||
unstuff7:
|
||||
ori x3, 1<<7 ;[09] will not be shifted any more
|
||||
in x2, USBIN ;[00] [10] re-sample bit 7
|
||||
andi x2, USBMASK ;[01]
|
||||
andi shift, ~0x80;[02]
|
||||
subi leap, 2 ;[03] total duration = 10 bits -> add 1/3
|
||||
rjmp didUnstuff7 ;[04]
|
||||
|
||||
unstuffEven:
|
||||
ori x3, 1<<6 ;[09] will be shifted right 6 times for bit 0
|
||||
in x1, USBIN ;[00] [10]
|
||||
andi shift, ~0x80;[01]
|
||||
andi x1, USBMASK ;[02]
|
||||
breq se0 ;[03]
|
||||
subi leap, -1 ;[04] total duration = 11 bits -> subtract 1/3
|
||||
nop2 ;[05]
|
||||
rjmp didUnstuffE ;[06]
|
||||
|
||||
unstuffOdd:
|
||||
ori x3, 1<<5 ;[09] will be shifted right 4 times for bit 1
|
||||
in x2, USBIN ;[00] [10]
|
||||
andi shift, ~0x80;[01]
|
||||
andi x2, USBMASK ;[02]
|
||||
breq se0 ;[03]
|
||||
subi leap, -1 ;[04] total duration = 11 bits -> subtract 1/3
|
||||
nop2 ;[05]
|
||||
rjmp didUnstuffO ;[06]
|
||||
|
||||
rxByteLoop:
|
||||
andi x1, USBMASK ;[03]
|
||||
eor x2, x1 ;[04]
|
||||
subi leap, 1 ;[05]
|
||||
brpl skipLeap ;[06]
|
||||
subi leap, -3 ;1 one leap cycle every 3rd byte -> 85 + 1/3 cycles per byte
|
||||
nop ;1
|
||||
skipLeap:
|
||||
subi x2, 1 ;[08]
|
||||
ror shift ;[09]
|
||||
didUnstuff6:
|
||||
cpi shift, 0xfc ;[10]
|
||||
in x2, USBIN ;[00] [11] <-- sample bit 7
|
||||
brcc unstuff6 ;[01]
|
||||
andi x2, USBMASK ;[02]
|
||||
eor x1, x2 ;[03]
|
||||
subi x1, 1 ;[04]
|
||||
ror shift ;[05]
|
||||
didUnstuff7:
|
||||
cpi shift, 0xfc ;[06]
|
||||
brcc unstuff7 ;[07]
|
||||
eor x3, shift ;[08] reconstruct: x3 is 1 at bit locations we changed, 0 at others
|
||||
st y+, x3 ;[09] store data
|
||||
rxBitLoop:
|
||||
in x1, USBIN ;[00] [11] <-- sample bit 0/2/4
|
||||
andi x1, USBMASK ;[01]
|
||||
eor x2, x1 ;[02]
|
||||
andi x3, 0x3f ;[03] topmost two bits reserved for 6 and 7
|
||||
subi x2, 1 ;[04]
|
||||
ror shift ;[05]
|
||||
cpi shift, 0xfc ;[06]
|
||||
brcc unstuffEven ;[07]
|
||||
didUnstuffE:
|
||||
lsr x3 ;[08]
|
||||
lsr x3 ;[09]
|
||||
rxbit1:
|
||||
in x2, USBIN ;[00] [10] <-- sample bit 1/3/5
|
||||
andi x2, USBMASK ;[01]
|
||||
breq se0 ;[02]
|
||||
eor x1, x2 ;[03]
|
||||
subi x1, 1 ;[04]
|
||||
ror shift ;[05]
|
||||
cpi shift, 0xfc ;[06]
|
||||
brcc unstuffOdd ;[07]
|
||||
didUnstuffO:
|
||||
subi bitcnt, 0xab;[08] == addi 0x55, 0x55 = 0x100/3
|
||||
brcs rxBitLoop ;[09]
|
||||
|
||||
subi cnt, 1 ;[10]
|
||||
in x1, USBIN ;[00] [11] <-- sample bit 6
|
||||
brcc rxByteLoop ;[01]
|
||||
rjmp overflow
|
||||
|
||||
macro POP_STANDARD ; 14 cycles
|
||||
pop cnt
|
||||
pop x4
|
||||
pop x3
|
||||
pop x2
|
||||
pop x1
|
||||
pop shift
|
||||
pop bitcnt
|
||||
endm
|
||||
macro POP_RETI ; 7 cycles
|
||||
pop YH
|
||||
pop YL
|
||||
out SREG, YL
|
||||
pop YL
|
||||
endm
|
||||
|
||||
#include "asmcommon.inc"
|
||||
|
||||
; USB spec says:
|
||||
; idle = J
|
||||
; J = (D+ = 0), (D- = 1)
|
||||
; K = (D+ = 1), (D- = 0)
|
||||
; Spec allows 7.5 bit times from EOP to SOP for replies
|
||||
|
||||
bitstuffN:
|
||||
eor x1, x4 ;[5]
|
||||
ldi x2, 0 ;[6]
|
||||
nop2 ;[7]
|
||||
nop ;[9]
|
||||
out USBOUT, x1 ;[10] <-- out
|
||||
rjmp didStuffN ;[0]
|
||||
|
||||
bitstuff6:
|
||||
eor x1, x4 ;[5]
|
||||
ldi x2, 0 ;[6] Carry is zero due to brcc
|
||||
rol shift ;[7] compensate for ror shift at branch destination
|
||||
rjmp didStuff6 ;[8]
|
||||
|
||||
bitstuff7:
|
||||
ldi x2, 0 ;[2] Carry is zero due to brcc
|
||||
rjmp didStuff7 ;[3]
|
||||
|
||||
|
||||
sendNakAndReti:
|
||||
ldi x3, USBPID_NAK ;[-18]
|
||||
rjmp sendX3AndReti ;[-17]
|
||||
sendAckAndReti:
|
||||
ldi cnt, USBPID_ACK ;[-17]
|
||||
sendCntAndReti:
|
||||
mov x3, cnt ;[-16]
|
||||
sendX3AndReti:
|
||||
ldi YL, 20 ;[-15] x3==r20 address is 20
|
||||
ldi YH, 0 ;[-14]
|
||||
ldi cnt, 2 ;[-13]
|
||||
; rjmp usbSendAndReti fallthrough
|
||||
|
||||
;usbSend:
|
||||
;pointer to data in 'Y'
|
||||
;number of bytes in 'cnt' -- including sync byte [range 2 ... 12]
|
||||
;uses: x1...x4, btcnt, shift, cnt, Y
|
||||
;Numbers in brackets are time since first bit of sync pattern is sent
|
||||
;We don't match the transfer rate exactly (don't insert leap cycles every third
|
||||
;byte) because the spec demands only 1.5% precision anyway.
|
||||
usbSendAndReti: ; 12 cycles until SOP
|
||||
in x2, USBDDR ;[-12]
|
||||
ori x2, USBMASK ;[-11]
|
||||
sbi USBOUT, USBMINUS;[-10] prepare idle state; D+ and D- must have been 0 (no pullups)
|
||||
in x1, USBOUT ;[-8] port mirror for tx loop
|
||||
out USBDDR, x2 ;[-7] <- acquire bus
|
||||
; need not init x2 (bitstuff history) because sync starts with 0
|
||||
ldi x4, USBMASK ;[-6] exor mask
|
||||
ldi shift, 0x80 ;[-5] sync byte is first byte sent
|
||||
txByteLoop:
|
||||
ldi bitcnt, 0x35 ;[-4] [6] binary 0011 0101
|
||||
txBitLoop:
|
||||
sbrs shift, 0 ;[-3] [7]
|
||||
eor x1, x4 ;[-2] [8]
|
||||
out USBOUT, x1 ;[-1] [9] <-- out N
|
||||
ror shift ;[0] [10]
|
||||
ror x2 ;[1]
|
||||
didStuffN:
|
||||
cpi x2, 0xfc ;[2]
|
||||
brcc bitstuffN ;[3]
|
||||
lsr bitcnt ;[4]
|
||||
brcc txBitLoop ;[5]
|
||||
brne txBitLoop ;[6]
|
||||
|
||||
sbrs shift, 0 ;[7]
|
||||
eor x1, x4 ;[8]
|
||||
didStuff6:
|
||||
out USBOUT, x1 ;[-1] [9] <-- out 6
|
||||
ror shift ;[0] [10]
|
||||
ror x2 ;[1]
|
||||
cpi x2, 0xfc ;[2]
|
||||
brcc bitstuff6 ;[3]
|
||||
ror shift ;[4]
|
||||
didStuff7:
|
||||
ror x2 ;[5]
|
||||
sbrs x2, 7 ;[6]
|
||||
eor x1, x4 ;[7]
|
||||
nop ;[8]
|
||||
cpi x2, 0xfc ;[9]
|
||||
out USBOUT, x1 ;[-1][10] <-- out 7
|
||||
brcc bitstuff7 ;[0] [11]
|
||||
ld shift, y+ ;[1]
|
||||
dec cnt ;[3]
|
||||
brne txByteLoop ;[4]
|
||||
;make SE0:
|
||||
cbr x1, USBMASK ;[5] prepare SE0 [spec says EOP may be 21 to 25 cycles]
|
||||
lds x2, usbNewDeviceAddr;[6]
|
||||
lsl x2 ;[8] we compare with left shifted address
|
||||
subi YL, 20 + 2 ;[9] Only assign address on data packets, not ACK/NAK in x3
|
||||
sbci YH, 0 ;[10]
|
||||
out USBOUT, x1 ;[11] <-- out SE0 -- from now 2 bits = 22 cycles until bus idle
|
||||
;2006-03-06: moved transfer of new address to usbDeviceAddr from C-Code to asm:
|
||||
;set address only after data packet was sent, not after handshake
|
||||
breq skipAddrAssign ;[0]
|
||||
sts usbDeviceAddr, x2; if not skipped: SE0 is one cycle longer
|
||||
skipAddrAssign:
|
||||
;end of usbDeviceAddress transfer
|
||||
ldi x2, 1<<USB_INTR_PENDING_BIT;[2] int0 occurred during TX -- clear pending flag
|
||||
USB_STORE_PENDING(x2) ;[3]
|
||||
ori x1, USBIDLE ;[4]
|
||||
in x2, USBDDR ;[5]
|
||||
cbr x2, USBMASK ;[6] set both pins to input
|
||||
mov x3, x1 ;[7]
|
||||
cbr x3, USBMASK ;[8] configure no pullup on both pins
|
||||
ldi x4, 4 ;[9]
|
||||
se0Delay:
|
||||
dec x4 ;[10] [13] [16] [19]
|
||||
brne se0Delay ;[11] [14] [17] [20]
|
||||
out USBOUT, x1 ;[21] <-- out J (idle) -- end of SE0 (EOP signal)
|
||||
out USBDDR, x2 ;[22] <-- release bus now
|
||||
out USBOUT, x3 ;[23] <-- ensure no pull-up resistors are active
|
||||
rjmp doReturn
|
||||
452
usbdrv/usbdrvasm165.inc
Normal file
452
usbdrv/usbdrvasm165.inc
Normal file
@ -0,0 +1,452 @@
|
||||
/* Name: usbdrvasm165.inc
|
||||
* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
|
||||
* Author: Christian Starkjohann
|
||||
* Creation Date: 2007-04-22
|
||||
* Tabsize: 4
|
||||
* Copyright: (c) 2007 by OBJECTIVE DEVELOPMENT Software GmbH
|
||||
* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
|
||||
*/
|
||||
|
||||
/* Do not link this file! Link usbdrvasm.S instead, which includes the
|
||||
* appropriate implementation!
|
||||
*/
|
||||
|
||||
/*
|
||||
General Description:
|
||||
This file is the 16.5 MHz version of the USB driver. It is intended for the
|
||||
ATTiny45 and similar controllers running on 16.5 MHz internal RC oscillator.
|
||||
This version contains a phase locked loop in the receiver routine to cope with
|
||||
slight clock rate deviations of up to +/- 1%.
|
||||
|
||||
See usbdrv.h for a description of the entire driver.
|
||||
|
||||
Since almost all of this code is timing critical, don't change unless you
|
||||
really know what you are doing! Many parts require not only a maximum number
|
||||
of CPU cycles, but even an exact number of cycles!
|
||||
*/
|
||||
|
||||
;Software-receiver engine. Strict timing! Don't change unless you can preserve timing!
|
||||
;interrupt response time: 4 cycles + insn running = 7 max if interrupts always enabled
|
||||
;max allowable interrupt latency: 59 cycles -> max 52 cycles interrupt disable
|
||||
;max stack usage: [ret(2), r0, SREG, YL, YH, shift, x1, x2, x3, x4, cnt] = 12 bytes
|
||||
;nominal frequency: 16.5 MHz -> 11 cycles per bit
|
||||
; 16.3125 MHz < F_CPU < 16.6875 MHz (+/- 1.1%)
|
||||
; Numbers in brackets are clocks counted from center of last sync bit
|
||||
; when instruction starts
|
||||
|
||||
|
||||
USB_INTR_VECTOR:
|
||||
;order of registers pushed: YL, SREG [sofError], r0, YH, shift, x1, x2, x3, x4, cnt
|
||||
push YL ;[-23] push only what is necessary to sync with edge ASAP
|
||||
in YL, SREG ;[-21]
|
||||
push YL ;[-20]
|
||||
;----------------------------------------------------------------------------
|
||||
; Synchronize with sync pattern:
|
||||
;----------------------------------------------------------------------------
|
||||
;sync byte (D-) pattern LSb to MSb: 01010100 [1 = idle = J, 0 = K]
|
||||
;sync up with J to K edge during sync pattern -- use fastest possible loops
|
||||
;The first part waits at most 1 bit long since we must be in sync pattern.
|
||||
;YL is guarenteed to be < 0x80 because I flag is clear. When we jump to
|
||||
;waitForJ, ensure that this prerequisite is met.
|
||||
waitForJ:
|
||||
inc YL
|
||||
sbis USBIN, USBMINUS
|
||||
brne waitForJ ; just make sure we have ANY timeout
|
||||
waitForK:
|
||||
;The following code results in a sampling window of < 1/4 bit which meets the spec.
|
||||
sbis USBIN, USBMINUS ;[-15]
|
||||
rjmp foundK ;[-14]
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
#if USB_COUNT_SOF
|
||||
lds YL, usbSofCount
|
||||
inc YL
|
||||
sts usbSofCount, YL
|
||||
#endif /* USB_COUNT_SOF */
|
||||
#ifdef USB_SOF_HOOK
|
||||
USB_SOF_HOOK
|
||||
#endif
|
||||
rjmp sofError
|
||||
foundK: ;[-12]
|
||||
;{3, 5} after falling D- edge, average delay: 4 cycles [we want 5 for center sampling]
|
||||
;we have 1 bit time for setup purposes, then sample again. Numbers in brackets
|
||||
;are cycles from center of first sync (double K) bit after the instruction
|
||||
push r0 ;[-12]
|
||||
; [---] ;[-11]
|
||||
push YH ;[-10]
|
||||
; [---] ;[-9]
|
||||
lds YL, usbInputBufOffset;[-8]
|
||||
; [---] ;[-7]
|
||||
clr YH ;[-6]
|
||||
subi YL, lo8(-(usbRxBuf));[-5] [rx loop init]
|
||||
sbci YH, hi8(-(usbRxBuf));[-4] [rx loop init]
|
||||
mov r0, x2 ;[-3] [rx loop init]
|
||||
sbis USBIN, USBMINUS ;[-2] we want two bits K (sample 2 cycles too early)
|
||||
rjmp haveTwoBitsK ;[-1]
|
||||
pop YH ;[0] undo the pushes from before
|
||||
pop r0 ;[2]
|
||||
rjmp waitForK ;[4] this was not the end of sync, retry
|
||||
; The entire loop from waitForK until rjmp waitForK above must not exceed two
|
||||
; bit times (= 22 cycles).
|
||||
|
||||
;----------------------------------------------------------------------------
|
||||
; push more registers and initialize values while we sample the first bits:
|
||||
;----------------------------------------------------------------------------
|
||||
haveTwoBitsK: ;[1]
|
||||
push shift ;[1]
|
||||
push x1 ;[3]
|
||||
push x2 ;[5]
|
||||
push x3 ;[7]
|
||||
ldi shift, 0xff ;[9] [rx loop init]
|
||||
ori x3, 0xff ;[10] [rx loop init] == ser x3, clear zero flag
|
||||
|
||||
in x1, USBIN ;[11] <-- sample bit 0
|
||||
bst x1, USBMINUS ;[12]
|
||||
bld shift, 0 ;[13]
|
||||
push x4 ;[14] == phase
|
||||
; [---] ;[15]
|
||||
push cnt ;[16]
|
||||
; [---] ;[17]
|
||||
ldi phase, 0 ;[18] [rx loop init]
|
||||
ldi cnt, USB_BUFSIZE;[19] [rx loop init]
|
||||
rjmp rxbit1 ;[20]
|
||||
; [---] ;[21]
|
||||
|
||||
;----------------------------------------------------------------------------
|
||||
; Receiver loop (numbers in brackets are cycles within byte after instr)
|
||||
;----------------------------------------------------------------------------
|
||||
/*
|
||||
byte oriented operations done during loop:
|
||||
bit 0: store data
|
||||
bit 1: SE0 check
|
||||
bit 2: overflow check
|
||||
bit 3: catch up
|
||||
bit 4: rjmp to achieve conditional jump range
|
||||
bit 5: PLL
|
||||
bit 6: catch up
|
||||
bit 7: jump, fixup bitstuff
|
||||
; 87 [+ 2] cycles
|
||||
------------------------------------------------------------------
|
||||
*/
|
||||
continueWithBit5:
|
||||
in x2, USBIN ;[055] <-- bit 5
|
||||
eor r0, x2 ;[056]
|
||||
or phase, r0 ;[057]
|
||||
sbrc phase, USBMINUS ;[058]
|
||||
lpm ;[059] optional nop3; modifies r0
|
||||
in phase, USBIN ;[060] <-- phase
|
||||
eor x1, x2 ;[061]
|
||||
bst x1, USBMINUS ;[062]
|
||||
bld shift, 5 ;[063]
|
||||
andi shift, 0x3f ;[064]
|
||||
in x1, USBIN ;[065] <-- bit 6
|
||||
breq unstuff5 ;[066] *** unstuff escape
|
||||
eor phase, x1 ;[067]
|
||||
eor x2, x1 ;[068]
|
||||
bst x2, USBMINUS ;[069]
|
||||
bld shift, 6 ;[070]
|
||||
didUnstuff6: ;[ ]
|
||||
in r0, USBIN ;[071] <-- phase
|
||||
cpi shift, 0x02 ;[072]
|
||||
brlo unstuff6 ;[073] *** unstuff escape
|
||||
didUnstuff5: ;[ ]
|
||||
nop2 ;[074]
|
||||
; [---] ;[075]
|
||||
in x2, USBIN ;[076] <-- bit 7
|
||||
eor x1, x2 ;[077]
|
||||
bst x1, USBMINUS ;[078]
|
||||
bld shift, 7 ;[079]
|
||||
didUnstuff7: ;[ ]
|
||||
eor r0, x2 ;[080]
|
||||
or phase, r0 ;[081]
|
||||
in r0, USBIN ;[082] <-- phase
|
||||
cpi shift, 0x04 ;[083]
|
||||
brsh rxLoop ;[084]
|
||||
; [---] ;[085]
|
||||
unstuff7: ;[ ]
|
||||
andi x3, ~0x80 ;[085]
|
||||
ori shift, 0x80 ;[086]
|
||||
in x2, USBIN ;[087] <-- sample stuffed bit 7
|
||||
nop ;[088]
|
||||
rjmp didUnstuff7 ;[089]
|
||||
; [---] ;[090]
|
||||
;[080]
|
||||
|
||||
unstuff5: ;[067]
|
||||
eor phase, x1 ;[068]
|
||||
andi x3, ~0x20 ;[069]
|
||||
ori shift, 0x20 ;[070]
|
||||
in r0, USBIN ;[071] <-- phase
|
||||
mov x2, x1 ;[072]
|
||||
nop ;[073]
|
||||
nop2 ;[074]
|
||||
; [---] ;[075]
|
||||
in x1, USBIN ;[076] <-- bit 6
|
||||
eor r0, x1 ;[077]
|
||||
or phase, r0 ;[078]
|
||||
eor x2, x1 ;[079]
|
||||
bst x2, USBMINUS ;[080]
|
||||
bld shift, 6 ;[081] no need to check bitstuffing, we just had one
|
||||
in r0, USBIN ;[082] <-- phase
|
||||
rjmp didUnstuff5 ;[083]
|
||||
; [---] ;[084]
|
||||
;[074]
|
||||
|
||||
unstuff6: ;[074]
|
||||
andi x3, ~0x40 ;[075]
|
||||
in x1, USBIN ;[076] <-- bit 6 again
|
||||
ori shift, 0x40 ;[077]
|
||||
nop2 ;[078]
|
||||
; [---] ;[079]
|
||||
rjmp didUnstuff6 ;[080]
|
||||
; [---] ;[081]
|
||||
;[071]
|
||||
|
||||
unstuff0: ;[013]
|
||||
eor r0, x2 ;[014]
|
||||
or phase, r0 ;[015]
|
||||
andi x2, USBMASK ;[016] check for SE0
|
||||
in r0, USBIN ;[017] <-- phase
|
||||
breq didUnstuff0 ;[018] direct jump to se0 would be too long
|
||||
andi x3, ~0x01 ;[019]
|
||||
ori shift, 0x01 ;[020]
|
||||
mov x1, x2 ;[021] mov existing sample
|
||||
in x2, USBIN ;[022] <-- bit 1 again
|
||||
rjmp didUnstuff0 ;[023]
|
||||
; [---] ;[024]
|
||||
;[014]
|
||||
|
||||
unstuff1: ;[024]
|
||||
eor r0, x1 ;[025]
|
||||
or phase, r0 ;[026]
|
||||
andi x3, ~0x02 ;[027]
|
||||
in r0, USBIN ;[028] <-- phase
|
||||
ori shift, 0x02 ;[029]
|
||||
mov x2, x1 ;[030]
|
||||
rjmp didUnstuff1 ;[031]
|
||||
; [---] ;[032]
|
||||
;[022]
|
||||
|
||||
unstuff2: ;[035]
|
||||
eor r0, x2 ;[036]
|
||||
or phase, r0 ;[037]
|
||||
andi x3, ~0x04 ;[038]
|
||||
in r0, USBIN ;[039] <-- phase
|
||||
ori shift, 0x04 ;[040]
|
||||
mov x1, x2 ;[041]
|
||||
rjmp didUnstuff2 ;[042]
|
||||
; [---] ;[043]
|
||||
;[033]
|
||||
|
||||
unstuff3: ;[043]
|
||||
in x2, USBIN ;[044] <-- bit 3 again
|
||||
eor r0, x2 ;[045]
|
||||
or phase, r0 ;[046]
|
||||
andi x3, ~0x08 ;[047]
|
||||
ori shift, 0x08 ;[048]
|
||||
nop ;[049]
|
||||
in r0, USBIN ;[050] <-- phase
|
||||
rjmp didUnstuff3 ;[051]
|
||||
; [---] ;[052]
|
||||
;[042]
|
||||
|
||||
unstuff4: ;[053]
|
||||
andi x3, ~0x10 ;[054]
|
||||
in x1, USBIN ;[055] <-- bit 4 again
|
||||
ori shift, 0x10 ;[056]
|
||||
rjmp didUnstuff4 ;[057]
|
||||
; [---] ;[058]
|
||||
;[048]
|
||||
|
||||
rxLoop: ;[085]
|
||||
eor x3, shift ;[086] reconstruct: x3 is 0 at bit locations we changed, 1 at others
|
||||
in x1, USBIN ;[000] <-- bit 0
|
||||
st y+, x3 ;[001]
|
||||
; [---] ;[002]
|
||||
eor r0, x1 ;[003]
|
||||
or phase, r0 ;[004]
|
||||
eor x2, x1 ;[005]
|
||||
in r0, USBIN ;[006] <-- phase
|
||||
ser x3 ;[007]
|
||||
bst x2, USBMINUS ;[008]
|
||||
bld shift, 0 ;[009]
|
||||
andi shift, 0xf9 ;[010]
|
||||
rxbit1: ;[ ]
|
||||
in x2, USBIN ;[011] <-- bit 1
|
||||
breq unstuff0 ;[012] *** unstuff escape
|
||||
andi x2, USBMASK ;[013] SE0 check for bit 1
|
||||
didUnstuff0: ;[ ] Z only set if we detected SE0 in bitstuff
|
||||
breq se0 ;[014]
|
||||
eor r0, x2 ;[015]
|
||||
or phase, r0 ;[016]
|
||||
in r0, USBIN ;[017] <-- phase
|
||||
eor x1, x2 ;[018]
|
||||
bst x1, USBMINUS ;[019]
|
||||
bld shift, 1 ;[020]
|
||||
andi shift, 0xf3 ;[021]
|
||||
didUnstuff1: ;[ ]
|
||||
in x1, USBIN ;[022] <-- bit 2
|
||||
breq unstuff1 ;[023] *** unstuff escape
|
||||
eor r0, x1 ;[024]
|
||||
or phase, r0 ;[025]
|
||||
subi cnt, 1 ;[026] overflow check
|
||||
brcs overflow ;[027]
|
||||
in r0, USBIN ;[028] <-- phase
|
||||
eor x2, x1 ;[029]
|
||||
bst x2, USBMINUS ;[030]
|
||||
bld shift, 2 ;[031]
|
||||
andi shift, 0xe7 ;[032]
|
||||
didUnstuff2: ;[ ]
|
||||
in x2, USBIN ;[033] <-- bit 3
|
||||
breq unstuff2 ;[034] *** unstuff escape
|
||||
eor r0, x2 ;[035]
|
||||
or phase, r0 ;[036]
|
||||
eor x1, x2 ;[037]
|
||||
bst x1, USBMINUS ;[038]
|
||||
in r0, USBIN ;[039] <-- phase
|
||||
bld shift, 3 ;[040]
|
||||
andi shift, 0xcf ;[041]
|
||||
didUnstuff3: ;[ ]
|
||||
breq unstuff3 ;[042] *** unstuff escape
|
||||
nop ;[043]
|
||||
in x1, USBIN ;[044] <-- bit 4
|
||||
eor x2, x1 ;[045]
|
||||
bst x2, USBMINUS ;[046]
|
||||
bld shift, 4 ;[047]
|
||||
didUnstuff4: ;[ ]
|
||||
eor r0, x1 ;[048]
|
||||
or phase, r0 ;[049]
|
||||
in r0, USBIN ;[050] <-- phase
|
||||
andi shift, 0x9f ;[051]
|
||||
breq unstuff4 ;[052] *** unstuff escape
|
||||
rjmp continueWithBit5;[053]
|
||||
; [---] ;[054]
|
||||
|
||||
macro POP_STANDARD ; 16 cycles
|
||||
pop cnt
|
||||
pop x4
|
||||
pop x3
|
||||
pop x2
|
||||
pop x1
|
||||
pop shift
|
||||
pop YH
|
||||
pop r0
|
||||
endm
|
||||
macro POP_RETI ; 5 cycles
|
||||
pop YL
|
||||
out SREG, YL
|
||||
pop YL
|
||||
endm
|
||||
|
||||
#include "asmcommon.inc"
|
||||
|
||||
|
||||
; USB spec says:
|
||||
; idle = J
|
||||
; J = (D+ = 0), (D- = 1)
|
||||
; K = (D+ = 1), (D- = 0)
|
||||
; Spec allows 7.5 bit times from EOP to SOP for replies
|
||||
|
||||
bitstuff7:
|
||||
eor x1, x4 ;[4]
|
||||
ldi x2, 0 ;[5]
|
||||
nop2 ;[6] C is zero (brcc)
|
||||
rjmp didStuff7 ;[8]
|
||||
|
||||
bitstuffN:
|
||||
eor x1, x4 ;[5]
|
||||
ldi x2, 0 ;[6]
|
||||
lpm ;[7] 3 cycle NOP, modifies r0
|
||||
out USBOUT, x1 ;[10] <-- out
|
||||
rjmp didStuffN ;[0]
|
||||
|
||||
#define bitStatus x3
|
||||
|
||||
sendNakAndReti:
|
||||
ldi cnt, USBPID_NAK ;[-19]
|
||||
rjmp sendCntAndReti ;[-18]
|
||||
sendAckAndReti:
|
||||
ldi cnt, USBPID_ACK ;[-17]
|
||||
sendCntAndReti:
|
||||
mov r0, cnt ;[-16]
|
||||
ldi YL, 0 ;[-15] R0 address is 0
|
||||
ldi YH, 0 ;[-14]
|
||||
ldi cnt, 2 ;[-13]
|
||||
; rjmp usbSendAndReti fallthrough
|
||||
|
||||
;usbSend:
|
||||
;pointer to data in 'Y'
|
||||
;number of bytes in 'cnt' -- including sync byte [range 2 ... 12]
|
||||
;uses: x1...x4, shift, cnt, Y
|
||||
;Numbers in brackets are time since first bit of sync pattern is sent
|
||||
usbSendAndReti: ; 12 cycles until SOP
|
||||
in x2, USBDDR ;[-12]
|
||||
ori x2, USBMASK ;[-11]
|
||||
sbi USBOUT, USBMINUS;[-10] prepare idle state; D+ and D- must have been 0 (no pullups)
|
||||
in x1, USBOUT ;[-8] port mirror for tx loop
|
||||
out USBDDR, x2 ;[-7] <- acquire bus
|
||||
; need not init x2 (bitstuff history) because sync starts with 0
|
||||
ldi x4, USBMASK ;[-6] exor mask
|
||||
ldi shift, 0x80 ;[-5] sync byte is first byte sent
|
||||
ldi bitStatus, 0xff ;[-4] init bit loop counter, works for up to 12 bytes
|
||||
byteloop:
|
||||
bitloop:
|
||||
sbrs shift, 0 ;[8] [-3]
|
||||
eor x1, x4 ;[9] [-2]
|
||||
out USBOUT, x1 ;[10] [-1] <-- out
|
||||
ror shift ;[0]
|
||||
ror x2 ;[1]
|
||||
didStuffN:
|
||||
cpi x2, 0xfc ;[2]
|
||||
brcc bitstuffN ;[3]
|
||||
nop ;[4]
|
||||
subi bitStatus, 37 ;[5] 256 / 7 ~=~ 37
|
||||
brcc bitloop ;[6] when we leave the loop, bitStatus has almost the initial value
|
||||
sbrs shift, 0 ;[7]
|
||||
eor x1, x4 ;[8]
|
||||
ror shift ;[9]
|
||||
didStuff7:
|
||||
out USBOUT, x1 ;[10] <-- out
|
||||
ror x2 ;[0]
|
||||
cpi x2, 0xfc ;[1]
|
||||
brcc bitstuff7 ;[2]
|
||||
ld shift, y+ ;[3]
|
||||
dec cnt ;[5]
|
||||
brne byteloop ;[6]
|
||||
;make SE0:
|
||||
cbr x1, USBMASK ;[7] prepare SE0 [spec says EOP may be 21 to 25 cycles]
|
||||
lds x2, usbNewDeviceAddr;[8]
|
||||
lsl x2 ;[10] we compare with left shifted address
|
||||
out USBOUT, x1 ;[11] <-- out SE0 -- from now 2 bits = 22 cycles until bus idle
|
||||
;2006-03-06: moved transfer of new address to usbDeviceAddr from C-Code to asm:
|
||||
;set address only after data packet was sent, not after handshake
|
||||
subi YL, 2 ;[0] Only assign address on data packets, not ACK/NAK in r0
|
||||
sbci YH, 0 ;[1]
|
||||
breq skipAddrAssign ;[2]
|
||||
sts usbDeviceAddr, x2; if not skipped: SE0 is one cycle longer
|
||||
skipAddrAssign:
|
||||
;end of usbDeviceAddress transfer
|
||||
ldi x2, 1<<USB_INTR_PENDING_BIT;[4] int0 occurred during TX -- clear pending flag
|
||||
USB_STORE_PENDING(x2) ;[5]
|
||||
ori x1, USBIDLE ;[6]
|
||||
in x2, USBDDR ;[7]
|
||||
cbr x2, USBMASK ;[8] set both pins to input
|
||||
mov x3, x1 ;[9]
|
||||
cbr x3, USBMASK ;[10] configure no pullup on both pins
|
||||
ldi x4, 4 ;[11]
|
||||
se0Delay:
|
||||
dec x4 ;[12] [15] [18] [21]
|
||||
brne se0Delay ;[13] [16] [19] [22]
|
||||
out USBOUT, x1 ;[23] <-- out J (idle) -- end of SE0 (EOP signal)
|
||||
out USBDDR, x2 ;[24] <-- release bus now
|
||||
out USBOUT, x3 ;[25] <-- ensure no pull-up resistors are active
|
||||
rjmp doReturn
|
||||
|
||||
706
usbdrv/usbdrvasm18-crc.inc
Normal file
706
usbdrv/usbdrvasm18-crc.inc
Normal file
@ -0,0 +1,706 @@
|
||||
/* Name: usbdrvasm18.inc
|
||||
* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
|
||||
* Author: Lukas Schrittwieser (based on 20 MHz usbdrvasm20.inc by Jeroen Benschop)
|
||||
* Creation Date: 2009-01-20
|
||||
* Tabsize: 4
|
||||
* Copyright: (c) 2008 by Lukas Schrittwieser and OBJECTIVE DEVELOPMENT Software GmbH
|
||||
* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
|
||||
*/
|
||||
|
||||
/* Do not link this file! Link usbdrvasm.S instead, which includes the
|
||||
* appropriate implementation!
|
||||
*/
|
||||
|
||||
/*
|
||||
General Description:
|
||||
This file is the 18 MHz version of the asssembler part of the USB driver. It
|
||||
requires a 18 MHz crystal (not a ceramic resonator and not a calibrated RC
|
||||
oscillator).
|
||||
|
||||
See usbdrv.h for a description of the entire driver.
|
||||
|
||||
Since almost all of this code is timing critical, don't change unless you
|
||||
really know what you are doing! Many parts require not only a maximum number
|
||||
of CPU cycles, but even an exact number of cycles!
|
||||
*/
|
||||
|
||||
|
||||
;max stack usage: [ret(2), YL, SREG, YH, [sofError], bitcnt(x5), shift, x1, x2, x3, x4, cnt, ZL, ZH] = 14 bytes
|
||||
;nominal frequency: 18 MHz -> 12 cycles per bit
|
||||
; Numbers in brackets are clocks counted from center of last sync bit
|
||||
; when instruction starts
|
||||
;register use in receive loop to receive the data bytes:
|
||||
; shift assembles the byte currently being received
|
||||
; x1 holds the D+ and D- line state
|
||||
; x2 holds the previous line state
|
||||
; cnt holds the number of bytes left in the receive buffer
|
||||
; x3 holds the higher crc byte (see algorithm below)
|
||||
; x4 is used as temporary register for the crc algorithm
|
||||
; x5 is used for unstuffing: when unstuffing the last received bit is inverted in shift (to prevent further
|
||||
; unstuffing calls. In the same time the corresponding bit in x5 is cleared to mark the bit as beening iverted
|
||||
; zl lower crc value and crc table index
|
||||
; zh used for crc table accesses
|
||||
|
||||
;--------------------------------------------------------------------------------------------------------------
|
||||
; CRC mods:
|
||||
; table driven crc checker, Z points to table in prog space
|
||||
; ZL is the lower crc byte, x3 is the higher crc byte
|
||||
; x4 is used as temp register to store different results
|
||||
; the initialization of the crc register is not 0xFFFF but 0xFE54. This is because during the receipt of the
|
||||
; first data byte an virtual zero data byte is added to the crc register, this results in the correct initial
|
||||
; value of 0xFFFF at beginning of the second data byte before the first data byte is added to the crc.
|
||||
; The magic number 0xFE54 results form the crc table: At tabH[0x54] = 0xFF = crcH (required) and
|
||||
; tabL[0x54] = 0x01 -> crcL = 0x01 xor 0xFE = 0xFF
|
||||
; bitcnt is renamed to x5 and is used for unstuffing purposes, the unstuffing works like in the 12MHz version
|
||||
;--------------------------------------------------------------------------------------------------------------
|
||||
; CRC algorithm:
|
||||
; The crc register is formed by x3 (higher byte) and ZL (lower byte). The algorithm uses a 'reversed' form
|
||||
; i.e. that it takes the least significant bit first and shifts to the right. So in fact the highest order
|
||||
; bit seen from the polynomial devision point of view is the lsb of ZL. (If this sounds strange to you i
|
||||
; propose a research on CRC :-) )
|
||||
; Each data byte received is xored to ZL, the lower crc byte. This byte now builds the crc
|
||||
; table index. Next the new high byte is loaded from the table and stored in x4 until we have space in x3
|
||||
; (its destination).
|
||||
; Afterwards the lower table is loaded from the table and stored in ZL (the old index is overwritten as
|
||||
; we don't need it anymore. In fact this is a right shift by 8 bits.) Now the old crc high value is xored
|
||||
; to ZL, this is the second shift of the old crc value. Now x4 (the temp reg) is moved to x3 and the crc
|
||||
; calculation is done.
|
||||
; Prior to the first byte the two CRC register have to be initialized to 0xFFFF (as defined in usb spec)
|
||||
; however the crc engine also runs during the receipt of the first byte, therefore x3 and zl are initialized
|
||||
; to a magic number which results in a crc value of 0xFFFF after the first complete byte.
|
||||
;
|
||||
; This algorithm is split into the extra cycles of the different bits:
|
||||
; bit7: XOR the received byte to ZL
|
||||
; bit5: load the new high byte to x4
|
||||
; bit6: load the lower xor byte from the table, xor zl and x3, store result in zl (=the new crc low value)
|
||||
; move x4 (the new high byte) to x3, the crc value is ready
|
||||
;
|
||||
|
||||
|
||||
macro POP_STANDARD ; 18 cycles
|
||||
pop ZH
|
||||
pop ZL
|
||||
pop cnt
|
||||
pop x5
|
||||
pop x3
|
||||
pop x2
|
||||
pop x1
|
||||
pop shift
|
||||
pop x4
|
||||
endm
|
||||
macro POP_RETI ; 7 cycles
|
||||
pop YH
|
||||
pop YL
|
||||
out SREG, YL
|
||||
pop YL
|
||||
endm
|
||||
|
||||
macro CRC_CLEANUP_AND_CHECK
|
||||
; the last byte has already been xored with the lower crc byte, we have to do the table lookup and xor
|
||||
; x3 is the higher crc byte, zl the lower one
|
||||
ldi ZH, hi8(usbCrcTableHigh);[+1] get the new high byte from the table
|
||||
lpm x2, Z ;[+2][+3][+4]
|
||||
ldi ZH, hi8(usbCrcTableLow);[+5] get the new low xor byte from the table
|
||||
lpm ZL, Z ;[+6][+7][+8]
|
||||
eor ZL, x3 ;[+7] xor the old high byte with the value from the table, x2:ZL now holds the crc value
|
||||
cpi ZL, 0x01 ;[+8] if the crc is ok we have a fixed remainder value of 0xb001 in x2:ZL (see usb spec)
|
||||
brne ignorePacket ;[+9] detected a crc fault -> paket is ignored and retransmitted by the host
|
||||
cpi x2, 0xb0 ;[+10]
|
||||
brne ignorePacket ;[+11] detected a crc fault -> paket is ignored and retransmitted by the host
|
||||
endm
|
||||
|
||||
|
||||
USB_INTR_VECTOR:
|
||||
;order of registers pushed: YL, SREG, YH, [sofError], x4, shift, x1, x2, x3, x5, cnt, ZL, ZH
|
||||
push YL ;[-28] push only what is necessary to sync with edge ASAP
|
||||
in YL, SREG ;[-26]
|
||||
push YL ;[-25]
|
||||
push YH ;[-23]
|
||||
;----------------------------------------------------------------------------
|
||||
; Synchronize with sync pattern:
|
||||
;----------------------------------------------------------------------------
|
||||
;sync byte (D-) pattern LSb to MSb: 01010100 [1 = idle = J, 0 = K]
|
||||
;sync up with J to K edge during sync pattern -- use fastest possible loops
|
||||
;The first part waits at most 1 bit long since we must be in sync pattern.
|
||||
;YL is guarenteed to be < 0x80 because I flag is clear. When we jump to
|
||||
;waitForJ, ensure that this prerequisite is met.
|
||||
waitForJ:
|
||||
inc YL
|
||||
sbis USBIN, USBMINUS
|
||||
brne waitForJ ; just make sure we have ANY timeout
|
||||
waitForK:
|
||||
;The following code results in a sampling window of < 1/4 bit which meets the spec.
|
||||
sbis USBIN, USBMINUS ;[-17]
|
||||
rjmp foundK ;[-16]
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
#if USB_COUNT_SOF
|
||||
lds YL, usbSofCount
|
||||
inc YL
|
||||
sts usbSofCount, YL
|
||||
#endif /* USB_COUNT_SOF */
|
||||
#ifdef USB_SOF_HOOK
|
||||
USB_SOF_HOOK
|
||||
#endif
|
||||
rjmp sofError
|
||||
foundK: ;[-15]
|
||||
;{3, 5} after falling D- edge, average delay: 4 cycles
|
||||
;bit0 should be at 30 (2.5 bits) for center sampling. Currently at 4 so 26 cylces till bit 0 sample
|
||||
;use 1 bit time for setup purposes, then sample again. Numbers in brackets
|
||||
;are cycles from center of first sync (double K) bit after the instruction
|
||||
push x4 ;[-14]
|
||||
; [---] ;[-13]
|
||||
lds YL, usbInputBufOffset;[-12] used to toggle the two usb receive buffers
|
||||
; [---] ;[-11]
|
||||
clr YH ;[-10]
|
||||
subi YL, lo8(-(usbRxBuf));[-9] [rx loop init]
|
||||
sbci YH, hi8(-(usbRxBuf));[-8] [rx loop init]
|
||||
push shift ;[-7]
|
||||
; [---] ;[-6]
|
||||
ldi shift, 0x80 ;[-5] the last bit is the end of byte marker for the pid receiver loop
|
||||
clc ;[-4] the carry has to be clear for receipt of pid bit 0
|
||||
sbis USBIN, USBMINUS ;[-3] we want two bits K (sample 3 cycles too early)
|
||||
rjmp haveTwoBitsK ;[-2]
|
||||
pop shift ;[-1] undo the push from before
|
||||
pop x4 ;[1]
|
||||
rjmp waitForK ;[3] this was not the end of sync, retry
|
||||
; The entire loop from waitForK until rjmp waitForK above must not exceed two
|
||||
; bit times (= 24 cycles).
|
||||
|
||||
;----------------------------------------------------------------------------
|
||||
; push more registers and initialize values while we sample the first bits:
|
||||
;----------------------------------------------------------------------------
|
||||
haveTwoBitsK:
|
||||
push x1 ;[0]
|
||||
push x2 ;[2]
|
||||
push x3 ;[4] crc high byte
|
||||
ldi x2, 1<<USBPLUS ;[6] [rx loop init] current line state is K state. D+=="1", D-=="0"
|
||||
push x5 ;[7]
|
||||
push cnt ;[9]
|
||||
ldi cnt, USB_BUFSIZE ;[11]
|
||||
|
||||
|
||||
;--------------------------------------------------------------------------------------------------------------
|
||||
; receives the pid byte
|
||||
; there is no real unstuffing algorithm implemented here as a stuffing bit is impossible in the pid byte.
|
||||
; That's because the last four bits of the byte are the inverted of the first four bits. If we detect a
|
||||
; unstuffing condition something went wrong and abort
|
||||
; shift has to be initialized to 0x80
|
||||
;--------------------------------------------------------------------------------------------------------------
|
||||
|
||||
; pid bit 0 - used for even more register saving (we need the z pointer)
|
||||
in x1, USBIN ;[0] sample line state
|
||||
andi x1, USBMASK ;[1] filter only D+ and D- bits
|
||||
eor x2, x1 ;[2] generate inverted of actual bit
|
||||
sbrc x2, USBMINUS ;[3] if the bit is set we received a zero
|
||||
sec ;[4]
|
||||
ror shift ;[5] we perform no unstuffing check here as this is the first bit
|
||||
mov x2, x1 ;[6]
|
||||
push ZL ;[7]
|
||||
;[8]
|
||||
push ZH ;[9]
|
||||
;[10]
|
||||
ldi x3, 0xFE ;[11] x3 is the high order crc value
|
||||
|
||||
|
||||
bitloopPid:
|
||||
in x1, USBIN ;[0] sample line state
|
||||
andi x1, USBMASK ;[1] filter only D+ and D- bits
|
||||
breq nse0 ;[2] both lines are low so handle se0
|
||||
eor x2, x1 ;[3] generate inverted of actual bit
|
||||
sbrc x2, USBMINUS ;[4] set the carry if we received a zero
|
||||
sec ;[5]
|
||||
ror shift ;[6]
|
||||
ldi ZL, 0x54 ;[7] ZL is the low order crc value
|
||||
ser x4 ;[8] the is no bit stuffing check here as the pid bit can't be stuffed. if so
|
||||
; some error occured. In this case the paket is discarded later on anyway.
|
||||
mov x2, x1 ;[9] prepare for the next cycle
|
||||
brcc bitloopPid ;[10] while 0s drop out of shift we get the next bit
|
||||
eor x4, shift ;[11] invert all bits in shift and store result in x4
|
||||
|
||||
;--------------------------------------------------------------------------------------------------------------
|
||||
; receives data bytes and calculates the crc
|
||||
; the last USBIN state has to be in x2
|
||||
; this is only the first half, due to branch distanc limitations the second half of the loop is near the end
|
||||
; of this asm file
|
||||
;--------------------------------------------------------------------------------------------------------------
|
||||
|
||||
rxDataStart:
|
||||
in x1, USBIN ;[0] sample line state (note: a se0 check is not useful due to bit dribbling)
|
||||
ser x5 ;[1] prepare the unstuff marker register
|
||||
eor x2, x1 ;[2] generates the inverted of the actual bit
|
||||
bst x2, USBMINUS ;[3] copy the bit from x2
|
||||
bld shift, 0 ;[4] and store it in shift
|
||||
mov x2, shift ;[5] make a copy of shift for unstuffing check
|
||||
andi x2, 0xF9 ;[6] mask the last six bits, if we got six zeros (which are six ones in fact)
|
||||
breq unstuff0 ;[7] then Z is set now and we branch to the unstuffing handler
|
||||
didunstuff0:
|
||||
subi cnt, 1 ;[8] cannot use dec because it doesn't affect the carry flag
|
||||
brcs nOverflow ;[9] Too many bytes received. Ignore packet
|
||||
st Y+, x4 ;[10] store the last received byte
|
||||
;[11] st needs two cycles
|
||||
|
||||
; bit1
|
||||
in x2, USBIN ;[0] sample line state
|
||||
andi x1, USBMASK ;[1] check for se0 during bit 0
|
||||
breq nse0 ;[2]
|
||||
andi x2, USBMASK ;[3] check se0 during bit 1
|
||||
breq nse0 ;[4]
|
||||
eor x1, x2 ;[5]
|
||||
bst x1, USBMINUS ;[6]
|
||||
bld shift, 1 ;[7]
|
||||
mov x1, shift ;[8]
|
||||
andi x1, 0xF3 ;[9]
|
||||
breq unstuff1 ;[10]
|
||||
didunstuff1:
|
||||
nop ;[11]
|
||||
|
||||
; bit2
|
||||
in x1, USBIN ;[0] sample line state
|
||||
andi x1, USBMASK ;[1] check for se0 (as there is nothing else to do here
|
||||
breq nOverflow ;[2]
|
||||
eor x2, x1 ;[3] generates the inverted of the actual bit
|
||||
bst x2, USBMINUS ;[4]
|
||||
bld shift, 2 ;[5] store the bit
|
||||
mov x2, shift ;[6]
|
||||
andi x2, 0xE7 ;[7] if we have six zeros here (which means six 1 in the stream)
|
||||
breq unstuff2 ;[8] the next bit is a stuffing bit
|
||||
didunstuff2:
|
||||
nop2 ;[9]
|
||||
;[10]
|
||||
nop ;[11]
|
||||
|
||||
; bit3
|
||||
in x2, USBIN ;[0] sample line state
|
||||
andi x2, USBMASK ;[1] check for se0
|
||||
breq nOverflow ;[2]
|
||||
eor x1, x2 ;[3]
|
||||
bst x1, USBMINUS ;[4]
|
||||
bld shift, 3 ;[5]
|
||||
mov x1, shift ;[6]
|
||||
andi x1, 0xCF ;[7]
|
||||
breq unstuff3 ;[8]
|
||||
didunstuff3:
|
||||
nop ;[9]
|
||||
rjmp rxDataBit4 ;[10]
|
||||
;[11]
|
||||
|
||||
; the avr branch instructions allow an offset of +63 insturction only, so we need this
|
||||
; 'local copy' of se0
|
||||
nse0:
|
||||
rjmp se0 ;[4]
|
||||
;[5]
|
||||
; the same same as for se0 is needed for overflow and StuffErr
|
||||
nOverflow:
|
||||
stuffErr:
|
||||
rjmp overflow
|
||||
|
||||
|
||||
unstuff0: ;[8] this is the branch delay of breq unstuffX
|
||||
andi x1, USBMASK ;[9] do an se0 check here (if the last crc byte ends with 5 one's we might end up here
|
||||
breq didunstuff0 ;[10] event tough the message is complete -> jump back and store the byte
|
||||
ori shift, 0x01 ;[11] invert the last received bit to prevent furhter unstuffing
|
||||
in x2, USBIN ;[0] we have some free cycles so we could check for bit stuffing errors
|
||||
andi x5, 0xFE ;[1] mark this bit as inverted (will be corrected before storing shift)
|
||||
eor x1, x2 ;[2] x1 and x2 have to be different because the stuff bit is always a zero
|
||||
andi x1, USBMASK ;[3] mask the interesting bits
|
||||
breq stuffErr ;[4] if the stuff bit is a 1-bit something went wrong
|
||||
mov x1, x2 ;[5] the next bit expects the last state to be in x1
|
||||
rjmp didunstuff0 ;[6]
|
||||
;[7] jump delay of rjmp didunstuffX
|
||||
|
||||
unstuff1: ;[11] this is the jump delay of breq unstuffX
|
||||
in x1, USBIN ;[0] we have some free cycles so we could check for bit stuffing errors
|
||||
ori shift, 0x02 ;[1] invert the last received bit to prevent furhter unstuffing
|
||||
andi x5, 0xFD ;[2] mark this bit as inverted (will be corrected before storing shift)
|
||||
eor x2, x1 ;[3] x1 and x2 have to be different because the stuff bit is always a zero
|
||||
andi x2, USBMASK ;[4] mask the interesting bits
|
||||
breq stuffErr ;[5] if the stuff bit is a 1-bit something went wrong
|
||||
mov x2, x1 ;[6] the next bit expects the last state to be in x2
|
||||
nop2 ;[7]
|
||||
;[8]
|
||||
rjmp didunstuff1 ;[9]
|
||||
;[10] jump delay of rjmp didunstuffX
|
||||
|
||||
unstuff2: ;[9] this is the jump delay of breq unstuffX
|
||||
ori shift, 0x04 ;[10] invert the last received bit to prevent furhter unstuffing
|
||||
andi x5, 0xFB ;[11] mark this bit as inverted (will be corrected before storing shift)
|
||||
in x2, USBIN ;[0] we have some free cycles so we could check for bit stuffing errors
|
||||
eor x1, x2 ;[1] x1 and x2 have to be different because the stuff bit is always a zero
|
||||
andi x1, USBMASK ;[2] mask the interesting bits
|
||||
breq stuffErr ;[3] if the stuff bit is a 1-bit something went wrong
|
||||
mov x1, x2 ;[4] the next bit expects the last state to be in x1
|
||||
nop2 ;[5]
|
||||
;[6]
|
||||
rjmp didunstuff2 ;[7]
|
||||
;[8] jump delay of rjmp didunstuffX
|
||||
|
||||
unstuff3: ;[9] this is the jump delay of breq unstuffX
|
||||
ori shift, 0x08 ;[10] invert the last received bit to prevent furhter unstuffing
|
||||
andi x5, 0xF7 ;[11] mark this bit as inverted (will be corrected before storing shift)
|
||||
in x1, USBIN ;[0] we have some free cycles so we could check for bit stuffing errors
|
||||
eor x2, x1 ;[1] x1 and x2 have to be different because the stuff bit is always a zero
|
||||
andi x2, USBMASK ;[2] mask the interesting bits
|
||||
breq stuffErr ;[3] if the stuff bit is a 1-bit something went wrong
|
||||
mov x2, x1 ;[4] the next bit expects the last state to be in x2
|
||||
nop2 ;[5]
|
||||
;[6]
|
||||
rjmp didunstuff3 ;[7]
|
||||
;[8] jump delay of rjmp didunstuffX
|
||||
|
||||
|
||||
|
||||
; the include has to be here due to branch distance restirctions
|
||||
#define __USE_CRC__
|
||||
#include "asmcommon.inc"
|
||||
|
||||
|
||||
|
||||
; USB spec says:
|
||||
; idle = J
|
||||
; J = (D+ = 0), (D- = 1)
|
||||
; K = (D+ = 1), (D- = 0)
|
||||
; Spec allows 7.5 bit times from EOP to SOP for replies
|
||||
; 7.5 bit times is 90 cycles. ...there is plenty of time
|
||||
|
||||
|
||||
sendNakAndReti:
|
||||
ldi x3, USBPID_NAK ;[-18]
|
||||
rjmp sendX3AndReti ;[-17]
|
||||
sendAckAndReti:
|
||||
ldi cnt, USBPID_ACK ;[-17]
|
||||
sendCntAndReti:
|
||||
mov x3, cnt ;[-16]
|
||||
sendX3AndReti:
|
||||
ldi YL, 20 ;[-15] x3==r20 address is 20
|
||||
ldi YH, 0 ;[-14]
|
||||
ldi cnt, 2 ;[-13]
|
||||
; rjmp usbSendAndReti fallthrough
|
||||
|
||||
;usbSend:
|
||||
;pointer to data in 'Y'
|
||||
;number of bytes in 'cnt' -- including sync byte [range 2 ... 12]
|
||||
;uses: x1...x4, btcnt, shift, cnt, Y
|
||||
;Numbers in brackets are time since first bit of sync pattern is sent
|
||||
|
||||
usbSendAndReti: ; 12 cycles until SOP
|
||||
in x2, USBDDR ;[-12]
|
||||
ori x2, USBMASK ;[-11]
|
||||
sbi USBOUT, USBMINUS;[-10] prepare idle state; D+ and D- must have been 0 (no pullups)
|
||||
in x1, USBOUT ;[-8] port mirror for tx loop
|
||||
out USBDDR, x2 ;[-6] <- acquire bus
|
||||
ldi x2, 0 ;[-6] init x2 (bitstuff history) because sync starts with 0
|
||||
ldi x4, USBMASK ;[-5] exor mask
|
||||
ldi shift, 0x80 ;[-4] sync byte is first byte sent
|
||||
txByteLoop:
|
||||
ldi bitcnt, 0x40 ;[-3]=[9] binary 01000000
|
||||
txBitLoop: ; the loop sends the first 7 bits of the byte
|
||||
sbrs shift, 0 ;[-2]=[10] if we have to send a 1 don't change the line state
|
||||
eor x1, x4 ;[-1]=[11]
|
||||
out USBOUT, x1 ;[0]
|
||||
ror shift ;[1]
|
||||
ror x2 ;[2] transfers the last sent bit to the stuffing history
|
||||
didStuffN:
|
||||
nop ;[3]
|
||||
nop ;[4]
|
||||
cpi x2, 0xfc ;[5] if we sent six consecutive ones
|
||||
brcc bitstuffN ;[6]
|
||||
lsr bitcnt ;[7]
|
||||
brne txBitLoop ;[8] restart the loop while the 1 is still in the bitcount
|
||||
|
||||
; transmit bit 7
|
||||
sbrs shift, 0 ;[9]
|
||||
eor x1, x4 ;[10]
|
||||
didStuff7:
|
||||
ror shift ;[11]
|
||||
out USBOUT, x1 ;[0] transfer bit 7 to the pins
|
||||
ror x2 ;[1] move the bit into the stuffing history
|
||||
cpi x2, 0xfc ;[2]
|
||||
brcc bitstuff7 ;[3]
|
||||
ld shift, y+ ;[4] get next byte to transmit
|
||||
dec cnt ;[5] decrement byte counter
|
||||
brne txByteLoop ;[7] if we have more bytes start next one
|
||||
;[8] branch delay
|
||||
|
||||
;make SE0:
|
||||
cbr x1, USBMASK ;[8] prepare SE0 [spec says EOP may be 25 to 30 cycles]
|
||||
lds x2, usbNewDeviceAddr;[9]
|
||||
lsl x2 ;[11] we compare with left shifted address
|
||||
out USBOUT, x1 ;[0] <-- out SE0 -- from now 2 bits = 24 cycles until bus idle
|
||||
subi YL, 20 + 2 ;[1] Only assign address on data packets, not ACK/NAK in x3
|
||||
sbci YH, 0 ;[2]
|
||||
;2006-03-06: moved transfer of new address to usbDeviceAddr from C-Code to asm:
|
||||
;set address only after data packet was sent, not after handshake
|
||||
breq skipAddrAssign ;[3]
|
||||
sts usbDeviceAddr, x2 ; if not skipped: SE0 is one cycle longer
|
||||
skipAddrAssign:
|
||||
;end of usbDeviceAddress transfer
|
||||
ldi x2, 1<<USB_INTR_PENDING_BIT;[5] int0 occurred during TX -- clear pending flag
|
||||
USB_STORE_PENDING(x2) ;[6]
|
||||
ori x1, USBIDLE ;[7]
|
||||
in x2, USBDDR ;[8]
|
||||
cbr x2, USBMASK ;[9] set both pins to input
|
||||
mov x3, x1 ;[10]
|
||||
cbr x3, USBMASK ;[11] configure no pullup on both pins
|
||||
ldi x4, 4 ;[12]
|
||||
se0Delay:
|
||||
dec x4 ;[13] [16] [19] [22]
|
||||
brne se0Delay ;[14] [17] [20] [23]
|
||||
out USBOUT, x1 ;[24] <-- out J (idle) -- end of SE0 (EOP signal)
|
||||
out USBDDR, x2 ;[25] <-- release bus now
|
||||
out USBOUT, x3 ;[26] <-- ensure no pull-up resistors are active
|
||||
rjmp doReturn
|
||||
|
||||
bitstuffN:
|
||||
eor x1, x4 ;[8] generate a zero
|
||||
ldi x2, 0 ;[9] reset the bit stuffing history
|
||||
nop2 ;[10]
|
||||
out USBOUT, x1 ;[0] <-- send the stuffing bit
|
||||
rjmp didStuffN ;[1]
|
||||
|
||||
bitstuff7:
|
||||
eor x1, x4 ;[5]
|
||||
ldi x2, 0 ;[6] reset bit stuffing history
|
||||
clc ;[7] fill a zero into the shift register
|
||||
rol shift ;[8] compensate for ror shift at branch destination
|
||||
rjmp didStuff7 ;[9]
|
||||
;[10] jump delay
|
||||
|
||||
;--------------------------------------------------------------------------------------------------------------
|
||||
; receives data bytes and calculates the crc
|
||||
; second half of the data byte receiver loop
|
||||
; most parts of the crc algorithm are here
|
||||
;--------------------------------------------------------------------------------------------------------------
|
||||
|
||||
nOverflow2:
|
||||
rjmp overflow
|
||||
|
||||
rxDataBit4:
|
||||
in x1, USBIN ;[0] sample line state
|
||||
andi x1, USBMASK ;[1] check for se0
|
||||
breq nOverflow2 ;[2]
|
||||
eor x2, x1 ;[3]
|
||||
bst x2, USBMINUS ;[4]
|
||||
bld shift, 4 ;[5]
|
||||
mov x2, shift ;[6]
|
||||
andi x2, 0x9F ;[7]
|
||||
breq unstuff4 ;[8]
|
||||
didunstuff4:
|
||||
nop2 ;[9][10]
|
||||
nop ;[11]
|
||||
|
||||
; bit5
|
||||
in x2, USBIN ;[0] sample line state
|
||||
ldi ZH, hi8(usbCrcTableHigh);[1] use the table for the higher byte
|
||||
eor x1, x2 ;[2]
|
||||
bst x1, USBMINUS ;[3]
|
||||
bld shift, 5 ;[4]
|
||||
mov x1, shift ;[5]
|
||||
andi x1, 0x3F ;[6]
|
||||
breq unstuff5 ;[7]
|
||||
didunstuff5:
|
||||
lpm x4, Z ;[8] load the higher crc xor-byte and store it for later use
|
||||
;[9] lpm needs 3 cycles
|
||||
;[10]
|
||||
ldi ZH, hi8(usbCrcTableLow);[11] load the lower crc xor byte adress
|
||||
|
||||
; bit6
|
||||
in x1, USBIN ;[0] sample line state
|
||||
eor x2, x1 ;[1]
|
||||
bst x2, USBMINUS ;[2]
|
||||
bld shift, 6 ;[3]
|
||||
mov x2, shift ;[4]
|
||||
andi x2, 0x7E ;[5]
|
||||
breq unstuff6 ;[6]
|
||||
didunstuff6:
|
||||
lpm ZL, Z ;[7] load the lower xor crc byte
|
||||
;[8] lpm needs 3 cycles
|
||||
;[9]
|
||||
eor ZL, x3 ;[10] xor the old high crc byte with the low xor-byte
|
||||
mov x3, x4 ;[11] move the new high order crc value from temp to its destination
|
||||
|
||||
; bit7
|
||||
in x2, USBIN ;[0] sample line state
|
||||
eor x1, x2 ;[1]
|
||||
bst x1, USBMINUS ;[2]
|
||||
bld shift, 7 ;[3] now shift holds the complete but inverted data byte
|
||||
mov x1, shift ;[4]
|
||||
andi x1, 0xFC ;[5]
|
||||
breq unstuff7 ;[6]
|
||||
didunstuff7:
|
||||
eor x5, shift ;[7] x5 marks all bits which have not been inverted by the unstuffing subs
|
||||
mov x4, x5 ;[8] keep a copy of the data byte it will be stored during next bit0
|
||||
eor ZL, x4 ;[9] feed the actual byte into the crc algorithm
|
||||
rjmp rxDataStart ;[10] next byte
|
||||
;[11] during the reception of the next byte this one will be fed int the crc algorithm
|
||||
|
||||
unstuff4: ;[9] this is the jump delay of rjmp unstuffX
|
||||
ori shift, 0x10 ;[10] invert the last received bit to prevent furhter unstuffing
|
||||
andi x5, 0xEF ;[11] mark this bit as inverted (will be corrected before storing shift)
|
||||
in x2, USBIN ;[0] we have some free cycles so we could check for bit stuffing errors
|
||||
eor x1, x2 ;[1] x1 and x2 have to be different because the stuff bit is always a zero
|
||||
andi x1, USBMASK ;[2] mask the interesting bits
|
||||
breq stuffErr2 ;[3] if the stuff bit is a 1-bit something went wrong
|
||||
mov x1, x2 ;[4] the next bit expects the last state to be in x1
|
||||
nop2 ;[5]
|
||||
;[6]
|
||||
rjmp didunstuff4 ;[7]
|
||||
;[8] jump delay of rjmp didunstuffX
|
||||
|
||||
unstuff5: ;[8] this is the jump delay of rjmp unstuffX
|
||||
nop ;[9]
|
||||
ori shift, 0x20 ;[10] invert the last received bit to prevent furhter unstuffing
|
||||
andi x5, 0xDF ;[11] mark this bit as inverted (will be corrected before storing shift)
|
||||
in x1, USBIN ;[0] we have some free cycles so we could check for bit stuffing errors
|
||||
eor x2, x1 ;[1] x1 and x2 have to be different because the stuff bit is always a zero
|
||||
andi x2, USBMASK ;[2] mask the interesting bits
|
||||
breq stuffErr2 ;[3] if the stuff bit is a 1-bit something went wrong
|
||||
mov x2, x1 ;[4] the next bit expects the last state to be in x2
|
||||
nop ;[5]
|
||||
rjmp didunstuff5 ;[6]
|
||||
;[7] jump delay of rjmp didunstuffX
|
||||
|
||||
unstuff6: ;[7] this is the jump delay of rjmp unstuffX
|
||||
nop2 ;[8]
|
||||
;[9]
|
||||
ori shift, 0x40 ;[10] invert the last received bit to prevent furhter unstuffing
|
||||
andi x5, 0xBF ;[11] mark this bit as inverted (will be corrected before storing shift)
|
||||
in x2, USBIN ;[0] we have some free cycles so we could check for bit stuffing errors
|
||||
eor x1, x2 ;[1] x1 and x2 have to be different because the stuff bit is always a zero
|
||||
andi x1, USBMASK ;[2] mask the interesting bits
|
||||
breq stuffErr2 ;[3] if the stuff bit is a 1-bit something went wrong
|
||||
mov x1, x2 ;[4] the next bit expects the last state to be in x1
|
||||
rjmp didunstuff6 ;[5]
|
||||
;[6] jump delay of rjmp didunstuffX
|
||||
|
||||
unstuff7: ;[7] this is the jump delay of rjmp unstuffX
|
||||
nop ;[8]
|
||||
nop ;[9]
|
||||
ori shift, 0x80 ;[10] invert the last received bit to prevent furhter unstuffing
|
||||
andi x5, 0x7F ;[11] mark this bit as inverted (will be corrected before storing shift)
|
||||
in x1, USBIN ;[0] we have some free cycles so we could check for bit stuffing errors
|
||||
eor x2, x1 ;[1] x1 and x2 have to be different because the stuff bit is always a zero
|
||||
andi x2, USBMASK ;[2] mask the interesting bits
|
||||
breq stuffErr2 ;[3] if the stuff bit is a 1-bit something went wrong
|
||||
mov x2, x1 ;[4] the next bit expects the last state to be in x2
|
||||
rjmp didunstuff7 ;[5]
|
||||
;[6] jump delay of rjmp didunstuff7
|
||||
|
||||
; local copy of the stuffErr desitnation for the second half of the receiver loop
|
||||
stuffErr2:
|
||||
rjmp stuffErr
|
||||
|
||||
;--------------------------------------------------------------------------------------------------------------
|
||||
; The crc table follows. It has to be aligned to enable a fast loading of the needed bytes.
|
||||
; There are two tables of 256 entries each, the low and the high byte table.
|
||||
; Table values were generated with the following C code:
|
||||
/*
|
||||
#include <stdio.h>
|
||||
int main (int argc, char **argv)
|
||||
{
|
||||
int i, j;
|
||||
for (i=0; i<512; i++){
|
||||
unsigned short crc = i & 0xff;
|
||||
for(j=0; j<8; j++) crc = (crc >> 1) ^ ((crc & 1) ? 0xa001 : 0);
|
||||
if((i & 7) == 0) printf("\n.byte ");
|
||||
printf("0x%02x, ", (i > 0xff ? (crc >> 8) : crc) & 0xff);
|
||||
if(i == 255) printf("\n");
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
// Use the following algorithm to compute CRC values:
|
||||
ushort computeCrc(uchar *msg, uchar msgLen)
|
||||
{
|
||||
uchar i;
|
||||
ushort crc = 0xffff;
|
||||
for(i = 0; i < msgLen; i++)
|
||||
crc = usbCrcTable16[lo8(crc) ^ msg[i]] ^ hi8(crc);
|
||||
return crc;
|
||||
}
|
||||
*/
|
||||
|
||||
.balign 256
|
||||
usbCrcTableLow:
|
||||
.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
|
||||
.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
|
||||
.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
|
||||
.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
|
||||
.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
|
||||
.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
|
||||
.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
|
||||
.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
|
||||
.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
|
||||
.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
|
||||
.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
|
||||
.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
|
||||
.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
|
||||
.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
|
||||
.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
|
||||
.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
|
||||
.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
|
||||
.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
|
||||
.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
|
||||
.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
|
||||
.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
|
||||
.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
|
||||
.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
|
||||
.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
|
||||
.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
|
||||
.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
|
||||
.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
|
||||
.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
|
||||
.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
|
||||
.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
|
||||
.byte 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41
|
||||
.byte 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
|
||||
|
||||
; .balign 256
|
||||
usbCrcTableHigh:
|
||||
.byte 0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2
|
||||
.byte 0xC6, 0x06, 0x07, 0xC7, 0x05, 0xC5, 0xC4, 0x04
|
||||
.byte 0xCC, 0x0C, 0x0D, 0xCD, 0x0F, 0xCF, 0xCE, 0x0E
|
||||
.byte 0x0A, 0xCA, 0xCB, 0x0B, 0xC9, 0x09, 0x08, 0xC8
|
||||
.byte 0xD8, 0x18, 0x19, 0xD9, 0x1B, 0xDB, 0xDA, 0x1A
|
||||
.byte 0x1E, 0xDE, 0xDF, 0x1F, 0xDD, 0x1D, 0x1C, 0xDC
|
||||
.byte 0x14, 0xD4, 0xD5, 0x15, 0xD7, 0x17, 0x16, 0xD6
|
||||
.byte 0xD2, 0x12, 0x13, 0xD3, 0x11, 0xD1, 0xD0, 0x10
|
||||
.byte 0xF0, 0x30, 0x31, 0xF1, 0x33, 0xF3, 0xF2, 0x32
|
||||
.byte 0x36, 0xF6, 0xF7, 0x37, 0xF5, 0x35, 0x34, 0xF4
|
||||
.byte 0x3C, 0xFC, 0xFD, 0x3D, 0xFF, 0x3F, 0x3E, 0xFE
|
||||
.byte 0xFA, 0x3A, 0x3B, 0xFB, 0x39, 0xF9, 0xF8, 0x38
|
||||
.byte 0x28, 0xE8, 0xE9, 0x29, 0xEB, 0x2B, 0x2A, 0xEA
|
||||
.byte 0xEE, 0x2E, 0x2F, 0xEF, 0x2D, 0xED, 0xEC, 0x2C
|
||||
.byte 0xE4, 0x24, 0x25, 0xE5, 0x27, 0xE7, 0xE6, 0x26
|
||||
.byte 0x22, 0xE2, 0xE3, 0x23, 0xE1, 0x21, 0x20, 0xE0
|
||||
.byte 0xA0, 0x60, 0x61, 0xA1, 0x63, 0xA3, 0xA2, 0x62
|
||||
.byte 0x66, 0xA6, 0xA7, 0x67, 0xA5, 0x65, 0x64, 0xA4
|
||||
.byte 0x6C, 0xAC, 0xAD, 0x6D, 0xAF, 0x6F, 0x6E, 0xAE
|
||||
.byte 0xAA, 0x6A, 0x6B, 0xAB, 0x69, 0xA9, 0xA8, 0x68
|
||||
.byte 0x78, 0xB8, 0xB9, 0x79, 0xBB, 0x7B, 0x7A, 0xBA
|
||||
.byte 0xBE, 0x7E, 0x7F, 0xBF, 0x7D, 0xBD, 0xBC, 0x7C
|
||||
.byte 0xB4, 0x74, 0x75, 0xB5, 0x77, 0xB7, 0xB6, 0x76
|
||||
.byte 0x72, 0xB2, 0xB3, 0x73, 0xB1, 0x71, 0x70, 0xB0
|
||||
.byte 0x50, 0x90, 0x91, 0x51, 0x93, 0x53, 0x52, 0x92
|
||||
.byte 0x96, 0x56, 0x57, 0x97, 0x55, 0x95, 0x94, 0x54
|
||||
.byte 0x9C, 0x5C, 0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E
|
||||
.byte 0x5A, 0x9A, 0x9B, 0x5B, 0x99, 0x59, 0x58, 0x98
|
||||
.byte 0x88, 0x48, 0x49, 0x89, 0x4B, 0x8B, 0x8A, 0x4A
|
||||
.byte 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C
|
||||
.byte 0x44, 0x84, 0x85, 0x45, 0x87, 0x47, 0x46, 0x86
|
||||
.byte 0x82, 0x42, 0x43, 0x83, 0x41, 0x81, 0x80, 0x40
|
||||
|
||||
359
usbdrv/usbdrvasm20.inc
Normal file
359
usbdrv/usbdrvasm20.inc
Normal file
@ -0,0 +1,359 @@
|
||||
/* Name: usbdrvasm20.inc
|
||||
* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
|
||||
* Author: Jeroen Benschop
|
||||
* Based on usbdrvasm16.inc from Christian Starkjohann
|
||||
* Creation Date: 2008-03-05
|
||||
* Tabsize: 4
|
||||
* Copyright: (c) 2008 by Jeroen Benschop and OBJECTIVE DEVELOPMENT Software GmbH
|
||||
* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
|
||||
*/
|
||||
|
||||
/* Do not link this file! Link usbdrvasm.S instead, which includes the
|
||||
* appropriate implementation!
|
||||
*/
|
||||
|
||||
/*
|
||||
General Description:
|
||||
This file is the 20 MHz version of the asssembler part of the USB driver. It
|
||||
requires a 20 MHz crystal (not a ceramic resonator and not a calibrated RC
|
||||
oscillator).
|
||||
|
||||
See usbdrv.h for a description of the entire driver.
|
||||
|
||||
Since almost all of this code is timing critical, don't change unless you
|
||||
really know what you are doing! Many parts require not only a maximum number
|
||||
of CPU cycles, but even an exact number of cycles!
|
||||
*/
|
||||
|
||||
#define leap2 x3
|
||||
#ifdef __IAR_SYSTEMS_ASM__
|
||||
#define nextInst $+2
|
||||
#else
|
||||
#define nextInst .+0
|
||||
#endif
|
||||
|
||||
;max stack usage: [ret(2), YL, SREG, YH, bitcnt, shift, x1, x2, x3, x4, cnt] = 12 bytes
|
||||
;nominal frequency: 20 MHz -> 13.333333 cycles per bit, 106.666667 cycles per byte
|
||||
; Numbers in brackets are clocks counted from center of last sync bit
|
||||
; when instruction starts
|
||||
;register use in receive loop:
|
||||
; shift assembles the byte currently being received
|
||||
; x1 holds the D+ and D- line state
|
||||
; x2 holds the previous line state
|
||||
; x4 (leap) is used to add a leap cycle once every three bytes received
|
||||
; X3 (leap2) is used to add a leap cycle once every three stuff bits received
|
||||
; bitcnt is used to determine when a stuff bit is due
|
||||
; cnt holds the number of bytes left in the receive buffer
|
||||
|
||||
USB_INTR_VECTOR:
|
||||
;order of registers pushed: YL, SREG YH, [sofError], bitcnt, shift, x1, x2, x3, x4, cnt
|
||||
push YL ;[-28] push only what is necessary to sync with edge ASAP
|
||||
in YL, SREG ;[-26]
|
||||
push YL ;[-25]
|
||||
push YH ;[-23]
|
||||
;----------------------------------------------------------------------------
|
||||
; Synchronize with sync pattern:
|
||||
;----------------------------------------------------------------------------
|
||||
;sync byte (D-) pattern LSb to MSb: 01010100 [1 = idle = J, 0 = K]
|
||||
;sync up with J to K edge during sync pattern -- use fastest possible loops
|
||||
;The first part waits at most 1 bit long since we must be in sync pattern.
|
||||
;YL is guarenteed to be < 0x80 because I flag is clear. When we jump to
|
||||
;waitForJ, ensure that this prerequisite is met.
|
||||
waitForJ:
|
||||
inc YL
|
||||
sbis USBIN, USBMINUS
|
||||
brne waitForJ ; just make sure we have ANY timeout
|
||||
waitForK:
|
||||
;The following code results in a sampling window of < 1/4 bit which meets the spec.
|
||||
sbis USBIN, USBMINUS ;[-19]
|
||||
rjmp foundK ;[-18]
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
sbis USBIN, USBMINUS
|
||||
rjmp foundK
|
||||
#if USB_COUNT_SOF
|
||||
lds YL, usbSofCount
|
||||
inc YL
|
||||
sts usbSofCount, YL
|
||||
#endif /* USB_COUNT_SOF */
|
||||
#ifdef USB_SOF_HOOK
|
||||
USB_SOF_HOOK
|
||||
#endif
|
||||
rjmp sofError
|
||||
foundK: ;[-16]
|
||||
;{3, 5} after falling D- edge, average delay: 4 cycles
|
||||
;bit0 should be at 34 for center sampling. Currently at 4 so 30 cylces till bit 0 sample
|
||||
;use 1 bit time for setup purposes, then sample again. Numbers in brackets
|
||||
;are cycles from center of first sync (double K) bit after the instruction
|
||||
push bitcnt ;[-16]
|
||||
; [---] ;[-15]
|
||||
lds YL, usbInputBufOffset;[-14]
|
||||
; [---] ;[-13]
|
||||
clr YH ;[-12]
|
||||
subi YL, lo8(-(usbRxBuf));[-11] [rx loop init]
|
||||
sbci YH, hi8(-(usbRxBuf));[-10] [rx loop init]
|
||||
push shift ;[-9]
|
||||
; [---] ;[-8]
|
||||
ldi shift,0x40 ;[-7] set msb to "1" so processing bit7 can be detected
|
||||
nop2 ;[-6]
|
||||
; [---] ;[-5]
|
||||
ldi bitcnt, 5 ;[-4] [rx loop init]
|
||||
sbis USBIN, USBMINUS ;[-3] we want two bits K (sample 3 cycles too early)
|
||||
rjmp haveTwoBitsK ;[-2]
|
||||
pop shift ;[-1] undo the push from before
|
||||
pop bitcnt ;[1]
|
||||
rjmp waitForK ;[3] this was not the end of sync, retry
|
||||
; The entire loop from waitForK until rjmp waitForK above must not exceed two
|
||||
; bit times (= 27 cycles).
|
||||
|
||||
;----------------------------------------------------------------------------
|
||||
; push more registers and initialize values while we sample the first bits:
|
||||
;----------------------------------------------------------------------------
|
||||
haveTwoBitsK:
|
||||
push x1 ;[0]
|
||||
push x2 ;[2]
|
||||
push x3 ;[4] (leap2)
|
||||
ldi leap2, 0x55 ;[6] add leap cycle on 2nd,5th,8th,... stuff bit
|
||||
push x4 ;[7] == leap
|
||||
ldi leap, 0x55 ;[9] skip leap cycle on 2nd,5th,8th,... byte received
|
||||
push cnt ;[10]
|
||||
ldi cnt, USB_BUFSIZE ;[12] [rx loop init]
|
||||
ldi x2, 1<<USBPLUS ;[13] current line state is K state. D+=="1", D-=="0"
|
||||
bit0:
|
||||
in x1, USBIN ;[0] sample line state
|
||||
andi x1, USBMASK ;[1] filter only D+ and D- bits
|
||||
rjmp handleBit ;[2] make bit0 14 cycles long
|
||||
|
||||
;----------------------------------------------------------------------------
|
||||
; Process bit7. However, bit 6 still may need unstuffing.
|
||||
;----------------------------------------------------------------------------
|
||||
|
||||
b6checkUnstuff:
|
||||
dec bitcnt ;[9]
|
||||
breq unstuff6 ;[10]
|
||||
bit7:
|
||||
subi cnt, 1 ;[11] cannot use dec becaus it does not affect the carry flag
|
||||
brcs overflow ;[12] Too many bytes received. Ignore packet
|
||||
in x1, USBIN ;[0] sample line state
|
||||
andi x1, USBMASK ;[1] filter only D+ and D- bits
|
||||
cpse x1, x2 ;[2] when previous line state equals current line state, handle "1"
|
||||
rjmp b7handle0 ;[3] when line state differs, handle "0"
|
||||
sec ;[4]
|
||||
ror shift ;[5] shift "1" into the data
|
||||
st y+, shift ;[6] store the data into the buffer
|
||||
ldi shift, 0x40 ;[7] reset data for receiving the next byte
|
||||
subi leap, 0x55 ;[9] trick to introduce a leap cycle every 3 bytes
|
||||
brcc nextInst ;[10 or 11] it will fail after 85 bytes. However low speed can only receive 11
|
||||
dec bitcnt ;[11 or 12]
|
||||
brne bit0 ;[12 or 13]
|
||||
ldi x1, 1 ;[13 or 14] unstuffing bit 7
|
||||
in bitcnt, USBIN ;[0] sample stuff bit
|
||||
rjmp unstuff ;[1]
|
||||
|
||||
b7handle0:
|
||||
mov x2,x1 ;[5] Set x2 to current line state
|
||||
ldi bitcnt, 6 ;[6]
|
||||
lsr shift ;[7] shift "0" into the data
|
||||
st y+, shift ;[8] store data into the buffer
|
||||
ldi shift, 0x40 ;[10] reset data for receiving the next byte
|
||||
subi leap, 0x55 ;[11] trick to introduce a leap cycle every 3 bytes
|
||||
brcs bit0 ;[12] it will fail after 85 bytes. However low speed can only receive 11
|
||||
rjmp bit0 ;[13]
|
||||
|
||||
|
||||
;----------------------------------------------------------------------------
|
||||
; Handle unstuff
|
||||
; x1==0xFF indicate unstuffing bit6
|
||||
;----------------------------------------------------------------------------
|
||||
|
||||
unstuff6:
|
||||
ldi x1,0xFF ;[12] indicate unstuffing bit 6
|
||||
in bitcnt, USBIN ;[0] sample stuff bit
|
||||
nop ;[1] fix timing
|
||||
unstuff: ;b0-5 b6 b7
|
||||
mov x2,bitcnt ;[3] [2] [3] Set x2 to match line state
|
||||
subi leap2, 0x55 ;[4] [3] [4] delay loop
|
||||
brcs nextInst ;[5] [4] [5] add one cycle every three stuff bits
|
||||
sbci leap2,0 ;[6] [5] [6]
|
||||
ldi bitcnt,6 ;[7] [6] [7] reset bit stuff counter
|
||||
andi x2, USBMASK ;[8] [7] [8] only keep D+ and D-
|
||||
cpi x1,0 ;[9] [8] [9]
|
||||
brmi bit7 ;[10] [9] [10] finished unstuffing bit6 When x1<0
|
||||
breq bitloop ;[11] --- [11] finished unstuffing bit0-5 when x1=0
|
||||
nop ;--- --- [12]
|
||||
in x1, USBIN ;--- --- [0] sample line state for bit0
|
||||
andi x1, USBMASK ;--- --- [1] filter only D+ and D- bits
|
||||
rjmp handleBit ;--- --- [2] make bit0 14 cycles long
|
||||
|
||||
;----------------------------------------------------------------------------
|
||||
; Receiver loop (numbers in brackets are cycles within byte after instr)
|
||||
;----------------------------------------------------------------------------
|
||||
bitloop:
|
||||
in x1, USBIN ;[0] sample line state
|
||||
andi x1, USBMASK ;[1] filter only D+ and D- bits
|
||||
breq se0 ;[2] both lines are low so handle se0
|
||||
handleBit:
|
||||
cpse x1, x2 ;[3] when previous line state equals current line state, handle "1"
|
||||
rjmp handle0 ;[4] when line state differs, handle "0"
|
||||
sec ;[5]
|
||||
ror shift ;[6] shift "1" into the data
|
||||
brcs b6checkUnstuff ;[7] When after shift C is set, next bit is bit7
|
||||
nop2 ;[8]
|
||||
dec bitcnt ;[10]
|
||||
brne bitloop ;[11]
|
||||
ldi x1,0 ;[12] indicate unstuff for bit other than bit6 or bit7
|
||||
in bitcnt, USBIN ;[0] sample stuff bit
|
||||
rjmp unstuff ;[1]
|
||||
|
||||
handle0:
|
||||
mov x2, x1 ;[6] Set x2 to current line state
|
||||
ldi bitcnt, 6 ;[7] reset unstuff counter.
|
||||
lsr shift ;[8] shift "0" into the data
|
||||
brcs bit7 ;[9] When after shift C is set, next bit is bit7
|
||||
nop ;[10]
|
||||
rjmp bitloop ;[11]
|
||||
|
||||
;----------------------------------------------------------------------------
|
||||
; End of receive loop. Now start handling EOP
|
||||
;----------------------------------------------------------------------------
|
||||
|
||||
macro POP_STANDARD ; 14 cycles
|
||||
pop cnt
|
||||
pop x4
|
||||
pop x3
|
||||
pop x2
|
||||
pop x1
|
||||
pop shift
|
||||
pop bitcnt
|
||||
endm
|
||||
macro POP_RETI ; 7 cycles
|
||||
pop YH
|
||||
pop YL
|
||||
out SREG, YL
|
||||
pop YL
|
||||
endm
|
||||
|
||||
|
||||
|
||||
#include "asmcommon.inc"
|
||||
|
||||
; USB spec says:
|
||||
; idle = J
|
||||
; J = (D+ = 0), (D- = 1)
|
||||
; K = (D+ = 1), (D- = 0)
|
||||
; Spec allows 7.5 bit times from EOP to SOP for replies
|
||||
; 7.5 bit times is 100 cycles. This implementation arrives a bit later at se0
|
||||
; then specified in the include file but there is plenty of time
|
||||
|
||||
bitstuffN:
|
||||
eor x1, x4 ;[8]
|
||||
ldi x2, 0 ;[9]
|
||||
nop2 ;[10]
|
||||
out USBOUT, x1 ;[12] <-- out
|
||||
rjmp didStuffN ;[0]
|
||||
|
||||
bitstuff7:
|
||||
eor x1, x4 ;[6]
|
||||
ldi x2, 0 ;[7] Carry is zero due to brcc
|
||||
rol shift ;[8] compensate for ror shift at branch destination
|
||||
nop2 ;[9]
|
||||
rjmp didStuff7 ;[11]
|
||||
|
||||
sendNakAndReti:
|
||||
ldi x3, USBPID_NAK ;[-18]
|
||||
rjmp sendX3AndReti ;[-17]
|
||||
sendAckAndReti:
|
||||
ldi cnt, USBPID_ACK ;[-17]
|
||||
sendCntAndReti:
|
||||
mov x3, cnt ;[-16]
|
||||
sendX3AndReti:
|
||||
ldi YL, 20 ;[-15] x3==r20 address is 20
|
||||
ldi YH, 0 ;[-14]
|
||||
ldi cnt, 2 ;[-13]
|
||||
; rjmp usbSendAndReti fallthrough
|
||||
|
||||
;usbSend:
|
||||
;pointer to data in 'Y'
|
||||
;number of bytes in 'cnt' -- including sync byte [range 2 ... 12]
|
||||
;uses: x1...x4, btcnt, shift, cnt, Y
|
||||
;Numbers in brackets are time since first bit of sync pattern is sent
|
||||
;We don't match the transfer rate exactly (don't insert leap cycles every third
|
||||
;byte) because the spec demands only 1.5% precision anyway.
|
||||
usbSendAndReti: ; 12 cycles until SOP
|
||||
in x2, USBDDR ;[-12]
|
||||
ori x2, USBMASK ;[-11]
|
||||
sbi USBOUT, USBMINUS;[-10] prepare idle state; D+ and D- must have been 0 (no pullups)
|
||||
in x1, USBOUT ;[-8] port mirror for tx loop
|
||||
out USBDDR, x2 ;[-7] <- acquire bus
|
||||
; need not init x2 (bitstuff history) because sync starts with 0
|
||||
ldi x4, USBMASK ;[-6] exor mask
|
||||
ldi shift, 0x80 ;[-5] sync byte is first byte sent
|
||||
txByteLoop:
|
||||
ldi bitcnt, 0x49 ;[-4] [10] binary 01001001
|
||||
txBitLoop:
|
||||
sbrs shift, 0 ;[-3] [10] [11]
|
||||
eor x1, x4 ;[-2] [11] [12]
|
||||
out USBOUT, x1 ;[-1] [12] [13] <-- out N
|
||||
ror shift ;[0] [13] [14]
|
||||
ror x2 ;[1]
|
||||
didStuffN:
|
||||
nop2 ;[2]
|
||||
nop ;[4]
|
||||
cpi x2, 0xfc ;[5]
|
||||
brcc bitstuffN ;[6]
|
||||
lsr bitcnt ;[7]
|
||||
brcc txBitLoop ;[8]
|
||||
brne txBitLoop ;[9]
|
||||
|
||||
sbrs shift, 0 ;[10]
|
||||
eor x1, x4 ;[11]
|
||||
didStuff7:
|
||||
out USBOUT, x1 ;[-1] [13] <-- out 7
|
||||
ror shift ;[0] [14]
|
||||
ror x2 ;[1]
|
||||
nop ;[2]
|
||||
cpi x2, 0xfc ;[3]
|
||||
brcc bitstuff7 ;[4]
|
||||
ld shift, y+ ;[5]
|
||||
dec cnt ;[7]
|
||||
brne txByteLoop ;[8]
|
||||
;make SE0:
|
||||
cbr x1, USBMASK ;[9] prepare SE0 [spec says EOP may be 25 to 30 cycles]
|
||||
lds x2, usbNewDeviceAddr;[10]
|
||||
lsl x2 ;[12] we compare with left shifted address
|
||||
out USBOUT, x1 ;[13] <-- out SE0 -- from now 2 bits = 22 cycles until bus idle
|
||||
subi YL, 20 + 2 ;[0] Only assign address on data packets, not ACK/NAK in x3
|
||||
sbci YH, 0 ;[1]
|
||||
;2006-03-06: moved transfer of new address to usbDeviceAddr from C-Code to asm:
|
||||
;set address only after data packet was sent, not after handshake
|
||||
breq skipAddrAssign ;[2]
|
||||
sts usbDeviceAddr, x2; if not skipped: SE0 is one cycle longer
|
||||
skipAddrAssign:
|
||||
;end of usbDeviceAddress transfer
|
||||
ldi x2, 1<<USB_INTR_PENDING_BIT;[4] int0 occurred during TX -- clear pending flag
|
||||
USB_STORE_PENDING(x2) ;[5]
|
||||
ori x1, USBIDLE ;[6]
|
||||
in x2, USBDDR ;[7]
|
||||
cbr x2, USBMASK ;[8] set both pins to input
|
||||
mov x3, x1 ;[9]
|
||||
cbr x3, USBMASK ;[10] configure no pullup on both pins
|
||||
ldi x4, 5 ;[11]
|
||||
se0Delay:
|
||||
dec x4 ;[12] [15] [18] [21] [24]
|
||||
brne se0Delay ;[13] [16] [19] [22] [25]
|
||||
out USBOUT, x1 ;[26] <-- out J (idle) -- end of SE0 (EOP signal)
|
||||
out USBDDR, x2 ;[27] <-- release bus now
|
||||
out USBOUT, x3 ;[28] <-- ensure no pull-up resistors are active
|
||||
rjmp doReturn
|
||||
143
usbdrv/usbportability.h
Normal file
143
usbdrv/usbportability.h
Normal file
@ -0,0 +1,143 @@
|
||||
/* Name: usbportability.h
|
||||
* Project: V-USB, virtual USB port for Atmel's(r) AVR(r) microcontrollers
|
||||
* Author: Christian Starkjohann
|
||||
* Creation Date: 2008-06-17
|
||||
* Tabsize: 4
|
||||
* Copyright: (c) 2008 by OBJECTIVE DEVELOPMENT Software GmbH
|
||||
* License: GNU GPL v2 (see License.txt), GNU GPL v3 or proprietary (CommercialLicense.txt)
|
||||
*/
|
||||
|
||||
/*
|
||||
General Description:
|
||||
This header is intended to contain all (or at least most of) the compiler
|
||||
and library dependent stuff. The C code is written for avr-gcc and avr-libc.
|
||||
The API of other development environments is converted to gcc's and avr-libc's
|
||||
API by means of defines.
|
||||
|
||||
This header also contains all system includes since they depend on the
|
||||
development environment.
|
||||
|
||||
Thanks to Oleg Semyonov for his help with the IAR tools port!
|
||||
*/
|
||||
|
||||
#ifndef __usbportability_h_INCLUDED__
|
||||
#define __usbportability_h_INCLUDED__
|
||||
|
||||
/* We check explicitly for IAR and CodeVision. Default is avr-gcc/avr-libc. */
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
#if defined __IAR_SYSTEMS_ICC__ || defined __IAR_SYSTEMS_ASM__ /* check for IAR */
|
||||
/* ------------------------------------------------------------------------- */
|
||||
|
||||
#ifndef ENABLE_BIT_DEFINITIONS
|
||||
# define ENABLE_BIT_DEFINITIONS 1 /* Enable bit definitions */
|
||||
#endif
|
||||
|
||||
/* Include IAR headers */
|
||||
#include <ioavr.h>
|
||||
#ifndef __IAR_SYSTEMS_ASM__
|
||||
# include <inavr.h>
|
||||
#endif
|
||||
|
||||
#define __attribute__(arg) /* not supported on IAR */
|
||||
|
||||
#ifdef __IAR_SYSTEMS_ASM__
|
||||
# define __ASSEMBLER__ /* IAR does not define standard macro for asm */
|
||||
#endif
|
||||
|
||||
#ifdef __HAS_ELPM__
|
||||
# define PROGMEM __farflash
|
||||
#else
|
||||
# define PROGMEM __flash
|
||||
#endif
|
||||
|
||||
#define USB_READ_FLASH(addr) (*(PROGMEM char *)(addr))
|
||||
|
||||
/* The following definitions are not needed by the driver, but may be of some
|
||||
* help if you port a gcc based project to IAR.
|
||||
*/
|
||||
#define cli() __disable_interrupt()
|
||||
#define sei() __enable_interrupt()
|
||||
#define wdt_reset() __watchdog_reset()
|
||||
#define _BV(x) (1 << (x))
|
||||
|
||||
/* assembler compatibility macros */
|
||||
#define nop2 rjmp $+2 /* jump to next instruction */
|
||||
#define XL r26
|
||||
#define XH r27
|
||||
#define YL r28
|
||||
#define YH r29
|
||||
#define ZL r30
|
||||
#define ZH r31
|
||||
#define lo8(x) LOW(x)
|
||||
#define hi8(x) (((x)>>8) & 0xff) /* not HIGH to allow XLINK to make a proper range check */
|
||||
|
||||
/* Depending on the device you use, you may get problems with the way usbdrv.h
|
||||
* handles the differences between devices. Since IAR does not use #defines
|
||||
* for MCU registers, we can't check for the existence of a particular
|
||||
* register with an #ifdef. If the autodetection mechanism fails, include
|
||||
* definitions for the required USB_INTR_* macros in your usbconfig.h. See
|
||||
* usbconfig-prototype.h and usbdrv.h for details.
|
||||
*/
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
#elif __CODEVISIONAVR__ /* check for CodeVision AVR */
|
||||
/* ------------------------------------------------------------------------- */
|
||||
/* This port is not working (yet) */
|
||||
|
||||
/* #define F_CPU _MCU_CLOCK_FREQUENCY_ seems to be defined automatically */
|
||||
|
||||
#include <io.h>
|
||||
#include <delay.h>
|
||||
|
||||
#define __attribute__(arg) /* not supported on IAR */
|
||||
|
||||
#define PROGMEM __flash
|
||||
#define USB_READ_FLASH(addr) (*(PROGMEM char *)(addr))
|
||||
|
||||
#ifndef __ASSEMBLER__
|
||||
static inline void cli(void)
|
||||
{
|
||||
#asm("cli");
|
||||
}
|
||||
static inline void sei(void)
|
||||
{
|
||||
#asm("sei");
|
||||
}
|
||||
#endif
|
||||
#define _delay_ms(t) delay_ms(t)
|
||||
#define _BV(x) (1 << (x))
|
||||
#define USB_CFG_USE_SWITCH_STATEMENT 1 /* macro for if() cascase fails for unknown reason */
|
||||
|
||||
#define macro .macro
|
||||
#define endm .endmacro
|
||||
#define nop2 rjmp .+0 /* jump to next instruction */
|
||||
|
||||
/* ------------------------------------------------------------------------- */
|
||||
#else /* default development environment is avr-gcc/avr-libc */
|
||||
/* ------------------------------------------------------------------------- */
|
||||
|
||||
#include <avr/io.h>
|
||||
#ifdef __ASSEMBLER__
|
||||
# define _VECTOR(N) __vector_ ## N /* io.h does not define this for asm */
|
||||
#else
|
||||
# include <avr/pgmspace.h>
|
||||
#endif
|
||||
|
||||
#if USB_CFG_DRIVER_FLASH_PAGE
|
||||
# define USB_READ_FLASH(addr) pgm_read_byte_far(((long)USB_CFG_DRIVER_FLASH_PAGE << 16) | (long)(addr))
|
||||
#else
|
||||
# define USB_READ_FLASH(addr) pgm_read_byte(addr)
|
||||
#endif
|
||||
|
||||
#define macro .macro
|
||||
#define endm .endm
|
||||
#define nop2 rjmp .+0 /* jump to next instruction */
|
||||
|
||||
#endif /* development environment */
|
||||
|
||||
/* for conveniecne, ensure that PRG_RDB exists */
|
||||
#ifndef PRG_RDB
|
||||
# define PRG_RDB(addr) USB_READ_FLASH(addr)
|
||||
#endif
|
||||
#endif /* __usbportability_h_INCLUDED__ */
|
||||
Loading…
Reference in New Issue
Block a user