#define F_CPU 1000000UL
#include <avr/io.h>
#include <util/delay.h>
#include <avr/interrupt.h>
#include <avr/sleep.h>

ISR(TIMER1_COMPA_vect)
{
   sleep_disable();
   TCNT1 = 0;
}


int main (void)
{
   uint8_t min;
   uint8_t hour;
   
   DDRB = 0x03;
   TCCR1B |= ((1 << CS10) | (1 << CS12)); // Set up timer at Fcpu/1024
   OCR1AH = 0xe4;
   OCR1AL = 0xc0;
   TIMSK = (1 << OCIE1A);
   
   min=0;
   hour=0;
   
   sei();
   
   while (1)
   {
      PORTB ^= (1 << 0);
      sleep_enable();
      sleep_cpu();
      
      min++;
      if (min==60) 
      {
	 hour++;
	 min=0;
      }
      if (hour==1 && min==0)
      {
	 PORTB ^= (1 << 1);
      }
      if (hour==1 && min==2)
      {
	 PORTB ^= (1 << 1);
	 hour=0;
      }
   }
   return 0;
}