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https://github.com/raphnet/4nes4snes
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1.4.1 Code cleanup
This commit is contained in:
Raphaël Assénat
parent
e4e9555583
commit
4caa7ea958
@ -1,3 +1,10 @@
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--- v1.4.1 (April 26, 2013)
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- Reduced declared max current from 120mA to 100mA. This makes
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it possible to connect the adapter to my keyboard USB port but
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is still a conservative estimate for the worst combination
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of hypothetical non-standard power hungry controllers.
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- Some code cleanups
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--- v1.4 (April 20, 2013)
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- Support for Atmega168. Use Makefile.atmega168.
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- New USB VID/PID
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@ -46,19 +46,33 @@ $(HEXFILE): $(ELFFILE)
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flash: $(HEXFILE)
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$(AVRDUDE) -Uflash:w:$(HEXFILE) -B 1.0
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# Extended fuse byte (Datasheet Table 28-5)
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#
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# - - - - - BOOTSZ1 BOOTSZ0 BOOTRST
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# 0 0 0 0 0 0 0 1
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#
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EFUSE=0x01
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# Fuse high byte (Datasheet Table 28-6)
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#
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# RSTDISBL DWEN SPIEN WDTON EESAVE BODLEVEL2 BODLEVEL1 BODLEVEL0
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# 1 1 0 1 1 1 1 1
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# 1 1 0 1 0 1 0 1
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#
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HFUSE=0xd5
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# Fuse low byte (Datasheet Table 28-7)
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#
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# CKDIV8 CKOUT SUT1 SUT0 CKSEL3 CKSEL2 CKSEL1 CKSEL0
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# 1 1 0 1 0 1 1 1
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#
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# Full swing crystal oscillator, BOD enabled
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LFUSE=0xDF
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# Full swing crystal oscillator
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# 0.4 - 20 MHz : CKSEL3..1 011
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#
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# Crystal Oscillator, BOD enabled (Table 9-6)
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# CKSEL0 : 1
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# SUT1..0 : 01
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#
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LFUSE=0xD7
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fuse:
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$(AVRDUDE) -e -Uefuse:w:$(EFUSE):m -Uhfuse:w:$(HFUSE):m -Ulfuse:w:$(LFUSE):m -B 20.0 -v
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@ -13,7 +13,6 @@
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#include <avr/pgmspace.h>
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#include <string.h>
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#include "gamepad.h"
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#include "leds.h"
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#include "fournsnes.h"
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#define GAMEPAD_BYTES 8 /* 2 byte per snes controller * 4 controllers */
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18
leds.h
18
leds.h
@ -1,18 +0,0 @@
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#ifndef _leds_h__
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#define _leds_h__
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#ifndef PORTD
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#include <avr/io.h>
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#endif
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#define LED_OFF()
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#define LED_ON();
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#define LED_TOGGLE();
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//#define LED_OFF() do { PORTD |= 0x20; } while(0)
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//#define LED_ON() do { PORTD &= ~0x20; } while(0)
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//#define LED_TOGGLE() do { PORTD ^= 0x20; } while(0)
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#endif
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65
main.c
65
main.c
@ -18,7 +18,6 @@
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#include "fournsnes.h"
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#include "leds.h"
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#include "devdesc.h"
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static uchar *rt_usbHidReportDescriptor=NULL;
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@ -101,32 +100,40 @@ static Gamepad *curGamepad;
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static void hardwareInit(void)
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{
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uchar i, j;
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/* PORTB
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*
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* Bit Description Direction Level/pu
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* 0 Jumpers common Out 0
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* 1 JP1 In 1
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* 2 JP2 In 1
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* 3 MOSI In 1
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* 4 MISO In 1
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* 5 SCK In 1
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* 6 -
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* 7 -
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*/
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DDRB = 0x01;
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PORTB = 0xFE;
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// init port C as input with pullup
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DDRC = 0x00;
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PORTC = 0xff;
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/* 1101 1000 bin: activate pull-ups except on USB lines
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/*
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* For port D, activate pull-ups on all lines except the D+, D- and bit 1.
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*
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* USB signals are on bit 0 and 2.
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* For historical reasons (a mistake on an old PCB), bit 1
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* is now always connected with bit 0. So bit 1 configured
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* as an input without pullup.
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*
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* Bit 1 is connected with bit 0 (rev.C pcb error), so the pullup
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* is not enabled.
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* */
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* Usb pin are init as output, low. (device reset). They are released
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* later when usbReset() is called.
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*/
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PORTD = 0xf8;
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/* Usb pin are init as outputs */
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DDRD = 0x01 | 0x04;
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j = 0;
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while(--j){ /* USB Reset by device only required on Watchdog Reset */
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i = 0;
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while(--i); /* delay >10ms for USB reset */
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}
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DDRD = 0x00; /* 0000 0000 bin: remove USB reset condition */
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/* Configure timers */
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#if defined(AT168_COMPATIBLE)
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TCCR2A= (1<<WGM21);
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TCCR2B=(1<<CS22)|(1<<CS21)|(1<<CS20);
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@ -137,6 +144,19 @@ static void hardwareInit(void)
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#endif
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}
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static void usbReset(void)
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{
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/* [...] a single ended zero or SE0 can be used to signify a device
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reset if held for more than 10mS. A SE0 is generated by holding
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both th D- and D+ low (< 0.3V).
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*/
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PORTD &= ~(0x01 | 0x04); // Set D+ and D- to 0
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DDRD |= 0x01 | 0x04;
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_delay_ms(15);
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DDRD &= ~(0x01 | 0x04);
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}
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#if defined(AT168_COMPATIBLE)
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#define mustPollControllers() (TIFR2 & (1<<OCF2A))
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@ -213,17 +233,11 @@ uchar usbFunctionSetup(uchar data[8])
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int main(void)
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{
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char must_report = 0; /* bitfield */
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uchar idleCounters[MAX_REPORTS];
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int i;
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unsigned char run_mode;
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memset(idleCounters, 0, MAX_REPORTS);
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DDRB |= 0x01;
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DDRB &= ~0x06;
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PORTB |= 0x06; /* enable pull up on DB1 and DB2 */
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PORTB &= ~0x01; /* Set DB0 to low */
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hardwareInit();
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_delay_ms(10); /* let pins settle */
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run_mode = (PINB & 0x06)>>1;
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@ -264,8 +278,7 @@ int main(void)
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// patch the config descriptor with the HID report descriptor size
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my_usbDescriptorConfiguration[25] = rt_usbHidReportDescriptorSize;
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//wdt_enable(WDTO_2S);
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hardwareInit();
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usbReset();
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curGamepad->init();
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usbInit();
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@ -5,7 +5,7 @@
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* Tabsize: 4
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* Copyright: (c) 2005 by OBJECTIVE DEVELOPMENT Software GmbH
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* License: GNU GPL v2 (see License.txt) or proprietary (CommercialLicense.txt)
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* This Revision: $Id: usbconfig.h,v 1.9 2013-04-20 17:24:53 cvs Exp $
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* This Revision: $Id: usbconfig.h,v 1.10 2013-04-26 12:23:38 cvs Exp $
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*/
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#ifndef __usbconfig_h_included__
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@ -89,7 +89,7 @@ rename it to "usbconfig.h". Then edit it accordingly.
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/* Define this to 1 if the device has its own power supply. Set it to 0 if the
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* device is powered from the USB bus.
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*/
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#define USB_CFG_MAX_BUS_POWER 120
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#define USB_CFG_MAX_BUS_POWER 100
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/* Set this variable to the maximum USB bus power consumption of your device.
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* The value is in milliamperes. [It will be divided by two since USB
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* communicates power requirements in units of 2 mA.]
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