Colony

volatile int seconds;

volatile int minutes;

volatile int hours;

volatile char horn;

void time_function(void) {

  if (minutes == 59 && seconds == 59) {

    hours++;

    minutes = 0;

    seconds = 0;

  } else if (seconds == 59) {

    minutes++;

    seconds = 0;

    horn = 1;

  } else {

    seconds++;

  }

}

int main(void) {

  int old_secs;

  seconds = 0;

  minutes = 0;

  hours = 0;

  horn = 0;

  DDRF = 0x01;

  PORTF = 0x00;

  rtc_init(SECOND, time_function);

  while(1) {

    if (horn == 1) {

      horn = 0;

      old_secs = seconds;

      while (seconds < 5) {

        PORTF = 0x01;

      } 

      PORTF = 0x00;

    }

  }

    range_init();

	//orb_enable();

	usb_puts("Turned on!\n");