122 lines
2.8 KiB
C
122 lines
2.8 KiB
C
/*
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ADB to USB-converter, for a non-extended keyboard and a mouse
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Copyright (C) 2010 Jeroen Domburg
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#define F_CPU 12000000
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#include <util/delay.h>
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#include <avr/io.h>
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#include <avr/interrupt.h>
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#include <stdio.h>
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#include <avr/pgmspace.h>
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#include <string.h>
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#include "adb.h"
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#include "scanadb2usb.h"
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#define UDR0 UDR
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#define UCSR0A UCSRA
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#define UCSR0B UCSRB
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#define UCSR0C UCSRC
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#define UBRR0L UBRRL
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#define UBRR0H UBRRH
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void sendchar(char c) {
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while(!(UCSR0A&(1<<5))) ;
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UDR0=c;
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}
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//Main routine
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int main(void) {
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unsigned char data[8];
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unsigned char keys[4]={0,0,0,0};
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unsigned char modFlags=0;
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int ret;
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int x;
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// stdoutInit(39); //1228800MHz -> 19200 baud
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UCSR0B=0x18;
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UBRR0L=39;
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UBRR0H=0;
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// sei();
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// printf_P(PSTR("PWRON\n"));
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PORTD&=~(1<<ADBPIN);
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adbReset();
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while(1) {
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ret=adbCommand((3<<4)|C_TALK|REG_0, data, 2);
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if (ret>0) {
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char n;
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sendchar('M');
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sendchar((data[0]&0x80)?0:1);
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n=data[1]&0x7f; if (data[1]&0x40) n+=128;
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sendchar(n);
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n=data[0]&0x7f; if (data[0]&0x40) n+=128;
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sendchar(n);
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// printf("Mouse: %i %i, but=%i\n", data[0]&0x7f, data[1]&0x7f, (data[0]&0x80)?0:1);
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// printf("Mouse: %x %x %x %x\n", data[0], data[1], data[2], data[3]);
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}
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ret=adbCommand((2<<4)|C_TALK|REG_0, data, 2);
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if (ret>0) {
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int x=0;
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char mask=0;
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unsigned char usbkey;
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unsigned int key=data[0]&0x7F;
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char press=data[0]&0x80;
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if (key==0x7F) key=(data[1]&0x7f)+0x80;
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// printf("Keyboard: key %3x %s.\n", key, press?"released":"pressed");
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while(pgm_read_byte(&scanadb2usb[x].usb)!=0) {
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if (pgm_read_byte(&scanadb2usb[x].adb)==key) usbkey=pgm_read_byte(&scanadb2usb[x].usb);
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x++;
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}
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x=0;
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//Check meta keys
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mask=0;
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if (key==0x36) mask=0x01;
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if (key==0x38) mask=0x02;
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if (key==0x37) mask=0x04;
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if (key==0x7d) mask=0x10;
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if (key==0x7b) mask=0x20;
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if (!mask) {
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if (!press) {
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while (x!=4 && keys[x]!=0) x++;
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if (x!=4) keys[x]=usbkey;
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} else {
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for (x=0; x<4; x++) {
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if (keys[x]==usbkey) keys[x]=0;
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}
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}
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} else {
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if (!press) {
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modFlags|=mask;
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} else {
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modFlags&=~mask;
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}
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}
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sendchar('K');
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sendchar(modFlags);
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sendchar(keys[0]);
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sendchar(keys[1]);
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sendchar(keys[2]);
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sendchar(keys[3]);
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}
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_delay_ms(9);
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}
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}
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