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#include <avr/io.h>
#include <avr/interrupt.h>
#include <avr/wdt.h>
#include <util/delay.h>
#include <stdlib.h>
#include "display.h"
#include "font.h"
#include "modem.h"
#include "system.h"
int main (void)
{
// disable ADC to save power
PRR |= _BV(PRADC);
// dito
wdt_disable();
// Enable pull-ups on PC3 and PC7 (button pins)
PORTC |= _BV(PC3) | _BV(PC7);
display.setString("Ohai! ");
display.enable();
modem.enable();
sei();
while (1) {
// nothing to do here, go to idle to save power
SMCR = _BV(SE);
asm("sleep");
/*
* The display timer causes a wakeup after 256µs. Run the system
* loop after the timer's ISR is done.
* The Modem also causes wakeups, which is pretty convenient since
* it means we can immediately process the received data.
*/
rocket.loop();
display.scroll();
}
return 0;
}
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