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/*
* A sysex bootloader for avr chips.
* Copyright 2010 Alex Norman
*
* This file is part of SysexBoot.
*
* SysexBoot 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
* (at your option) any later version.
*
* SysexBoot 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 SysexBoot. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <avr/io.h>
int main(void) {
uint8_t i, j, k, cnt = 0;
DDRB = 0xFF;
PORTB = 0xF0;
DDRC = 0xFF;
PORTC = 0xFF;
while(1){
for(i = 0; i < 255; i++)
for(j = 0; j < 128; j++)
for(k = 0; k < 128; k++);
cnt++;
PORTB = ~cnt;
if (PORTC == 0)
PORTC = 0xFF;
else
PORTC = 0x00;
}
return 0;
}
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