#include <avr/io.h>
#define F_CPU 4000000UL//4MHz
#include <util/delay.h>
#include <stdlib.h>
#include <avr/interrupt.h>


volatile int flag = 0;
volatile int a = 0;
volatile int b = 0;

//Interrupt wird alle 20ms aufgerufen

ISR (TIMER1_CAPT_vect) {

	//PORTB ^= (1 << PB7);
	flag = 1;


	}


// zweiter Interrupt

ISR (TIMER0_OVF_vect) {

	//PORTB ^= (1 << PB7);
	//b++;

	}





int main(void)
{


  DDRB = 0xff;
  DDRA = 0;
  DDRD = 0;
	
	
	ICR1 = 20000;
	OCR1A = 1000;
	OCR1B = 500;

	TCCR1A = (1 << COM0A0) | (1 << COM0A1) | (1 << COM0B0) | (1 << COM0B1) | (1 << WGM11);
	TCCR1B = (1 << CS10) | (1 << WGM13) | (1 << WGM12);

	TCCR0A = 0;
	TCCR0B = (1 << CS02) | (1 << CS00);

	TIMSK = (1 << OCIE1A) | (1 << OCIE1B) | (1 << ICIE1) | (1 << TOIE0);

	sei();

	//int sreg = 0;
	int i = 0;

 while (1){



 	if(flag){

		flag = 0;

		
		//LED blinkt nicht, mit Oszi kein toggeln feststellbar

		i++;			
		if (i > 100) {
		 PORTB ^= (1 << PB7);
		i = 0;
		}
	
		
		
			
}}
}