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https://github.com/raphnet/4nes4snes
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Added fourscore support
This commit is contained in:
Raphaël Assénat
parent
b8783c060e
commit
4c4ad386e5
@ -1,3 +1,7 @@
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--- v1.2 (May 2, 2009)
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Added NES fourscore support. When a fourscore is detected in port 1, fourscore
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mode is entered and ports 1 and 2 are used to read up to 4 NES controllers.
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--- v1.1 (18 Apr 2007)
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- Changed report descriptor. There are now four separate report IDs, one
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per controller. This was necessary because even though all axis and buttons
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18
Makefile
18
Makefile
@ -5,17 +5,17 @@
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# Tabsize: 4
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# Copyright: (c) 2006 by OBJECTIVE DEVELOPMENT Software GmbH
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# License: Proprietary, free under certain conditions. See Documentation.
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# This Revision: $Id: Makefile,v 1.2 2008-03-30 15:21:39 raph Exp $
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# This Revision: $Id: Makefile,v 1.3 2009-05-02 12:07:45 cvs Exp $
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UISP = uisp -dprog=stk500 -dpart=atmega8 -dserial=/dev/avr
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COMPILE = avr-gcc -Wall -Os -Iusbdrv -I. -mmcu=atmega8 #-DDEBUG_LEVEL=1
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COMMON_OBJS = usbdrv/usbdrv.o usbdrv/usbdrvasm.o usbdrv/oddebug.o main.o
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OBJECTS = usbdrv/usbdrv.o usbdrv/usbdrvasm.o usbdrv/oddebug.o main.o snes.o devdesc.o
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HEXFILE=main.hex
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# symbolic targets:
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all: main.hex
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all: $(HEXFILE)
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.c.o:
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$(COMPILE) -c $< -o $@
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@ -32,20 +32,20 @@ all: main.hex
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clean:
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rm -f main.hex main.lst main.obj main.cof main.list main.map main.eep.hex main.bin *.o usbdrv/*.o main.s usbdrv/oddebug.s usbdrv/usbdrv.s
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rm -f $(HEXFILE) main.lst main.obj main.cof main.list main.map main.eep.hex main.bin *.o usbdrv/*.o main.s usbdrv/oddebug.s usbdrv/usbdrv.s
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# file targets:
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main.bin: $(COMMON_OBJS) snes.o devdesc.o
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$(COMPILE) -o main.bin $(OBJECTS) -Wl,-Map=main.map
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main.hex: main.bin
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rm -f main.hex main.eep.hex
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avr-objcopy -j .text -j .data -O ihex main.bin main.hex
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$(HEXFILE): main.bin
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rm -f $(HEXFILE) main.eep.hex
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avr-objcopy -j .text -j .data -O ihex main.bin $(HEXFILE)
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./checksize main.bin
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flash: all
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#$(UISP) --erase --upload --verify if=main.hex
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$(UISP) --erase --upload if=main.hex
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#$(UISP) --erase --upload --verify if=$(HEXFILE)
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$(UISP) --erase --upload if=$(HEXFILE)
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flash_usb:
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sudo avrdude -p m8 -P usb -c avrispmkII -Uflash:w:$(HEXFILE) -B 1.0
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126
snes.c
126
snes.c
@ -61,6 +61,45 @@ static unsigned char last_reported_controller_bytes[GAMEPAD_BYTES];
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// indicates if a controller is in NES mode
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static unsigned char nesMode=0; /* Bit0: controller 1, Bit1: controller 2...*/
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static unsigned char fourscore_mode = 0;
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static void autoDetectFourScore(void)
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{
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unsigned char dat18th_low = 0;
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unsigned char hc=0;
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int i;
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SNES_LATCH_HIGH();
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_delay_us(12);
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SNES_LATCH_LOW();
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for (i=0; i<24; i++)
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{
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_delay_us(6);
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SNES_CLOCK_LOW();
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if (!SNES_GET_DATA1()) {
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if (i==19) {
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dat18th_low = 1;
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}
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}
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else {
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hc++;
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}
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_delay_us(6);
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SNES_CLOCK_HIGH();
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}
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if (dat18th_low && hc == 23) {
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// only 18th data bit was low. Looks like a FOUR SCORE.
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fourscore_mode = 1;
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}
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return;
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}
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static void snesInit(void)
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{
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@ -112,6 +151,8 @@ static void snesInit(void)
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if (last_read_controller_bytes[7]==0xFF)
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nesMode |= 8;
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autoDetectFourScore();
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SREG = sreg;
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}
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@ -151,6 +192,58 @@ static void snesUpdate(void)
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_delay_us(12);
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SNES_LATCH_LOW();
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if (fourscore_mode)
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{
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/* Nes controller buttons are sent in this order:
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* One byte: A B SEL START UP DOWN LEFT RIGHT */
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for (i=0; i<8; i++)
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{
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_delay_us(6);
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SNES_CLOCK_LOW();
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// FourScore to be connected to ports 1 and 2
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tmp1 <<= 1;
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tmp2 <<= 1;
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if (!SNES_GET_DATA1()) { tmp1 |= 1; }
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if (!SNES_GET_DATA2()) { tmp2 |= 1; }
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_delay_us(6);
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SNES_CLOCK_HIGH();
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}
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for (i=0; i<8; i++)
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{
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_delay_us(6);
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SNES_CLOCK_LOW();
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// FourScore to be connected to ports 1 and 2
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tmp3 <<= 1;
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tmp4 <<= 1;
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if (!SNES_GET_DATA1()) { tmp3 |= 1; }
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if (!SNES_GET_DATA2()) { tmp4 |= 1; }
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_delay_us(6);
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SNES_CLOCK_HIGH();
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}
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for (i=0; i<8; i++)
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{
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_delay_us(6);
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SNES_CLOCK_LOW();
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_delay_us(6);
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SNES_CLOCK_HIGH();
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}
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last_read_controller_bytes[0] = tmp1;
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last_read_controller_bytes[1] = tmp2;
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last_read_controller_bytes[2] = tmp3;
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last_read_controller_bytes[3] = tmp4;
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return;
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}
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for (i=0; i<8; i++)
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{
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_delay_us(6);
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@ -166,7 +259,6 @@ static void snesUpdate(void)
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if (!SNES_GET_DATA4()) { tmp4 |= 1; }
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_delay_us(6);
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SNES_CLOCK_HIGH();
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}
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last_read_controller_bytes[0] = tmp1;
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@ -208,6 +300,10 @@ static char snesChanged(char report_id)
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{
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report_id--; // first report is 1
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if (fourscore_mode) {
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return last_read_controller_bytes[report_id] != last_reported_controller_bytes[report_id];
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}
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return memcmp( &last_read_controller_bytes[report_id<<1],
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&last_reported_controller_bytes[report_id<<1],
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2);
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@ -246,7 +342,7 @@ static unsigned char snesReorderButtons(unsigned char bytes[2])
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static char snesBuildReport(unsigned char *reportBuffer, char id)
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{
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char idx;
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int idx;
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if (id < 0 || id > 4)
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return 0;
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@ -264,8 +360,34 @@ static char snesBuildReport(unsigned char *reportBuffer, char id)
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*
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* [6] : controller 4, 8 first bits
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* [7] : controller 4, 4 extra snes buttons
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*
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*
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* last_read_controller_bytes[] structure in FOUR SCORE mode:
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*
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* A B SEL START UP DOWN LEFT RIGHT
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*
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* [0] : NES controller 1 data
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* [1] : NES controller 2 data
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* [2] : NES controller 3 data
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* [3] : NES controller 4 data
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*
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*/
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if (fourscore_mode) {
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idx = id - 1;
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if (reportBuffer != NULL)
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{
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reportBuffer[0]=id;
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reportBuffer[1]=getX(last_read_controller_bytes[idx]);
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reportBuffer[2]=getY(last_read_controller_bytes[idx]);
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reportBuffer[3] = last_read_controller_bytes[idx] & 0xf0;
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}
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last_reported_controller_bytes[idx] = last_read_controller_bytes[idx];
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return 4;
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}
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idx = id - 1;
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if (reportBuffer != NULL)
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{
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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: Proprietary, free under certain conditions. See Documentation.
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* This Revision: $Id: usbconfig.h,v 1.5 2007-04-18 23:58:01 raph Exp $
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* This Revision: $Id: usbconfig.h,v 1.6 2009-05-02 12:07:46 cvs Exp $
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*/
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#ifndef __usbconfig_h_included__
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@ -102,7 +102,7 @@ must be adapted to your hardware.
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* you use obdev's free shared VID/PID pair. Be sure to read the rules in
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* USBID-License.txt!
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*/
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#define USB_CFG_DEVICE_VERSION 0x01, 0x01
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#define USB_CFG_DEVICE_VERSION 0x02, 0x01
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/* Version number of the device: Minor number first, then major number.
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*/
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#define USB_CFG_VENDOR_NAME 'r', 'a', 'p', 'h', 'n', 'e', 't', '.', 'n', 'e', 't'
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