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/*
* spreadspace avr utils
*
*
* Copyright (C) 2013-2018 Christian Pointner <equinox@spreadspace.org>
*
* This file is part of spreadspace avr utils.
*
* spreadspace avr utils 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 3 of the License, or
* any later version.
*
* spreadspace avr utils 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 spreadspace avr utils. If not, see <http://www.gnu.org/licenses/>.
*/
#include <avr/io.h>
#include <avr/wdt.h>
#include <avr/interrupt.h>
#include <avr/power.h>
#include <stdio.h>
#include "util.h"
#include "led.h"
#include "dualusbio.h"
uint8_t stdio_port = 0;
void handle_cmd(uint8_t cmd)
{
switch(cmd) {
case '0': led_off(); break;
case '1': led_on(); break;
case 't': led_toggle(); break;
case 's': printf("std: already stdio\r\n"); return;
default: printf("std: error\r\n"); return;
}
printf("std: ok\r\n");
}
void handle_cmd2(uint8_t p, uint8_t cmd)
{
switch(cmd) {
case '0': led_on(); break;
case '1': led_off(); break;
case 't': led_toggle(); break;
case 's': stdio_port = p; dualusbio_make_stdio(stdio_port); break;
default: fprintf(usbio[p], "%d: error\r\n", p); return;
}
fprintf(usbio[p], "%d: ok\r\n", p);
}
int main(void)
{
MCUSR &= ~(1 << WDRF);
wdt_disable();
cpu_init();
led_init();
dualusbio_init();
sei();
dualusbio_make_stdio(stdio_port);
for(;;) {
int16_t BytesReceived = dualusbio_bytes_received_std();
while(BytesReceived > 0) {
int ReceivedByte = fgetc(stdin);
if(ReceivedByte != EOF) {
handle_cmd(ReceivedByte);
}
BytesReceived--;
}
uint8_t p = (stdio_port) ? 0 : 1;
BytesReceived = dualusbio_bytes_received(p);
while(BytesReceived > 0) {
int ReceivedByte = fgetc(usbio[p]);
if(ReceivedByte != EOF) {
handle_cmd2(p, ReceivedByte);
}
BytesReceived--;
}
dualusbio_task();
}
}
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