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Cleanup and license

This commit is contained in:
Raphaël Assénat 2013-10-17 02:26:13 +00:00
parent 64e8a750ec
commit d92797a6ef
4 changed files with 86 additions and 58 deletions
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80
dc_pad.c
View File

@ -1,5 +1,5 @@
/* Saturn to USB : Sega dc controllers to USB adapter
* Copyright (C) 2011-2013 Raphaël Assénat
/* Dreamcast to USB : Sega dc controllers to USB adapter
* Copyright (C) 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
@ -27,7 +27,7 @@
#include "dc_pad.h"
#include "maplebus.h"
#define MAX_REPORT_SIZE 4
#define MAX_REPORT_SIZE 6
#define NUM_REPORTS 1
// report matching the most recent bytes from the controller
@ -36,7 +36,7 @@ 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 char report_sizes[NUM_REPORTS] = { 6 };
static Gamepad dcGamepad;
static void dcUpdate(void);
@ -44,8 +44,10 @@ static void dcUpdate(void);
/*
* [0] X
* [1] Y
* [2] Btn 0-7
* [3] Btn 8-15
* [2] Ltrig
* [3] Rtrig
* [4] Btn 0-7
* [5] Btn 8-15
*/
static const unsigned char dcPadReport[] PROGMEM = {
0x05, 0x01, // USAGE_PAGE (Generic Desktop)
@ -55,10 +57,12 @@ static const unsigned char dcPadReport[] PROGMEM = {
0xa1, 0x00, // COLLECTION (Physical)
0x09, 0x30, // USAGE (X)
0x09, 0x31, // USAGE (Y)
0x09, 0x36, // USAGE (Slider)
0x09, 0x36,
0x15, 0x00, // LOGICAL_MINIMUM (0)
0x26, 0xff, 0x00, // LOGICAL_MAXIMUM (255)
0x75, 0x08, // REPORT_SIZE (8)
0x95, 0x02, // REPORT_COUNT (2)
0x95, 0x04, // REPORT_COUNT (4)
0x81, 0x02, // INPUT (Data,Var,Abs)
0x05, 0x09, // USAGE_PAGE (Button)
0x19, 0x01, // USAGE_MINIMUM (Button 1)
@ -105,68 +109,39 @@ static void dcInit(void)
#define MAX_ERRORS 10
#define STATE_GET_INFO 0
#define STATE_WRITE_LCD 1
#define STATE_READ_PAD 2
#define STATE_READ_PAD 1
#define MAPLE_CMD_RQ_DEV_INFO 1
#define MAPLE_CMD_RESET_DEVICE 3
#define MAPLE_CMD_GET_CONDITION 9
#define MAPLE_CMD_BLOCK_WRITE 12
#define MAPLE_ADDR_PORT(id) ((id)<<6)
#define MAPLE_ADDR_PORTA MAPLE_ADDR_PORT(0)
#define MAPLE_ADDR_PORTB MAPLE_ADDR_PORT(1)
#define MAPLE_ADDR_PORTC MAPLE_ADDR_PORT(2)
#define MAPLE_ADDR_PORTD MAPLE_ADDR_PORT(3)
#define MAPLE_ADDR_MAIN 0x20
#define MAPLE_ADDR_SUB(id) ((1)<<id) /* where id is 0 to 4 */
#define MAPLE_DC_ADDR 0
#define MAPLE_HEADER(cmd,dst_addr,src_addr,len) ( (((cmd)&0xfful)<<24) | (((dst_addr)&0xfful)<<16) | (((src_addr)&0xfful)<<8) | ((len)&0xff))
static uint32_t request_device_info[1] = { MAPLE_HEADER(MAPLE_CMD_RQ_DEV_INFO, MAPLE_ADDR_MAIN | MAPLE_ADDR_PORTA, MAPLE_DC_ADDR, 0) };
static uint32_t get_condition[2] = { 0x09200001, 0x00000001 };
static uint32_t block_write_lcd[4] = { 0x0c300003, 0x004, 0, 0xf0f0f0f0 };
static void dcReadPad(void)
{
static unsigned char state = STATE_GET_INFO;
static unsigned char err_count = 0;
static unsigned char controller_address = 0;
unsigned char tmp[30];
int v;
switch (state)
{
case STATE_GET_INFO:
{
uint32_t request_device_info[1] = { MAPLE_HEADER(MAPLE_CMD_RQ_DEV_INFO, MAPLE_ADDR_MAIN | MAPLE_ADDR_PORTA, MAPLE_DC_ADDR, 0) };
maple_sendFrame(request_device_info, 1);
v = maple_receivePacket(tmp, 30);
// Too many data arrives and we stop listening before the controller stop transmitting. The delay
// here is to wait until the bus is idle again before continuing.
_delay_ms(2);
if (v==-2) {
controller_address = tmp[1]; // sender address
state = STATE_WRITE_LCD;
state = STATE_READ_PAD;
}
break;
case STATE_WRITE_LCD:
{
int i;
for (i=0; i<5; i++)
{
uint32_t request_device_info1[1] = { MAPLE_HEADER(MAPLE_CMD_RQ_DEV_INFO, MAPLE_ADDR_PORTA | MAPLE_ADDR_SUB(i), MAPLE_DC_ADDR, 0) };
if (controller_address & (1<<i)) {
maple_sendFrame(request_device_info1, 1);
_delay_us(300);
}
}
}
break;
case STATE_READ_PAD:
{
uint32_t get_condition[2] = {
MAPLE_HEADER(MAPLE_CMD_GET_CONDITION, MAPLE_ADDR_MAIN | MAPLE_ADDR_PORTA, MAPLE_DC_ADDR, 1),
MAPLE_FUNC_CONTROLLER
};
maple_sendFrame(get_condition, 2);
v = maple_receivePacket(tmp, 30);
if (v<=0) {
@ -177,6 +152,8 @@ static void dcReadPad(void)
}
err_count = 0;
if (v < 16)
return;
// 8 : Buttons
// 9 : Buttons
@ -188,8 +165,11 @@ static void dcReadPad(void)
// 15 : Joy Y2 axis
last_built_report[0][0] = tmp[12]-1;
last_built_report[0][1] = tmp[13]-1;
last_built_report[0][2] = tmp[8] ^ 0xff;
last_built_report[0][3] = tmp[9] ^ 0xff;
last_built_report[0][2] = tmp[10];
last_built_report[0][3] = tmp[11];
last_built_report[0][4] = tmp[8] ^ 0xff;
last_built_report[0][5] = tmp[9] ^ 0xff;
}
break;
}
}

4
main.c
View File

@ -1,5 +1,5 @@
/* Saturn to USB : Sega saturn controllers to USB adapter
* Copyright (C) 2011 Raphaël Assénat
/* Dreamcast to USB : Sega dc controllers to USB adapter
* Copyright (C) 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

19
maplebus.c
View File

@ -1,3 +1,22 @@
/* Dreamcast to USB : Sega dc controllers to USB adapter
* Copyright (C) 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 <util/delay.h>
#include "usbdrv.h"

31
maplebus.h
View File

@ -1,7 +1,36 @@
#ifndef _maplebus_h__
#define _maplebus_h__
#include <stdint.h>
/* Most of the information here is from
* http://mc.pp.se/dc/maplebus.html
*/
#define MAPLE_CMD_RQ_DEV_INFO 1
#define MAPLE_CMD_RESET_DEVICE 3
#define MAPLE_CMD_GET_CONDITION 9
#define MAPLE_CMD_BLOCK_WRITE 12
#define MAPLE_FUNC_CONTROLLER 0x001
#define MAPLE_FUNC_MEMCARD 0x002
#define MAPLE_FUNC_LCD 0x004
#define MAPLE_FUNC_CLOCK 0x008
#define MAPLE_FUNC_MIC 0x010
#define MAPLE_FUNC_AR_GUN 0x020
#define MAPLE_FUNC_KEYBOARD 0x040
#define MAPLE_FUNC_LIGHT_GUN 0x080
#define MAPLE_FUNC_PURUPURU 0x100
#define MAPLE_FUNC_MOUSE 0x200
#define MAPLE_ADDR_PORT(id) ((id)<<6)
#define MAPLE_ADDR_PORTA MAPLE_ADDR_PORT(0)
#define MAPLE_ADDR_PORTB MAPLE_ADDR_PORT(1)
#define MAPLE_ADDR_PORTC MAPLE_ADDR_PORT(2)
#define MAPLE_ADDR_PORTD MAPLE_ADDR_PORT(3)
#define MAPLE_ADDR_MAIN 0x20
#define MAPLE_ADDR_SUB(id) ((1)<<id) /* where id is 0 to 4 */
#define MAPLE_DC_ADDR 0
#define MAPLE_HEADER(cmd,dst_addr,src_addr,len) ( (((cmd)&0xfful)<<24) | (((dst_addr)&0xfful)<<16) | (((src_addr)&0xfful)<<8) | ((len)&0xff))
void maple_init(void);
void maple_sendPacket(unsigned char *data, unsigned char len);