andrea

/*
 * tes_time.c
 *
 * Created: 18/06/2018 09:38:18
 *  Author: Andrea
 */


#include <avr/io.h>
#include <avr/interrupt.h>
int i;
int s;
int main(void)
{
   DDRD &= ~(1 << DDD2);
   DDRC = 0xFF;




   PORTD |= (1 << PORTD2);
      //registri pulsante
      EICRA=0X2;
   EIMSK |= (1 << INT0);
     //registri timer
TCCR0A |= (1 << WGM01);						//CTC mode TC0 (OCR0A -> TOP)
TCCR0B |=((1 << CS02) |(1 << CS00));		//Prescaler 1024 (1 clk = 64 us)
TIMSK0 = 0x00;								//Interrupt compare A disabled
OCR0A = 156;
   sei();

   while(1)
    {
		i=0;
		s=0;
		PORTC|= (1 << PORTC0);
		if(s=5){
		PORTC|= (1 << PORTC1);}
		if(s=10){
		PORTC|= (1 << PORTC2);}
		if(s=15){
		PORTC|= (1 << PORTC3);}
		if(s=20){
		PORTC|= (1 << PORTC4); }
		if(s=25){
			PORTC|= (1 << PORTC5);
		i=0;
		s=0;}

    }
}
ISR (INT0_vect) {
	PORTC=0x0;


	TIMSK0 = 0x02;

 }
ISR (TIMER0_COMPA_vect)  // Timer/Counter0 Compare Match A interrupt service routine
{  i++;
	if(i=200){s++;}

 }