#define F_CPU 9600000UL//9.6MHZ

#include <avr/io.h>
#include <util/delay.h>
#include <avr/interrupt.h>


#define Relais   PB2
#define Schalter PB4
#define LED      PB0
#define Sensor   PB1//PB3


bool Status;

//Interrupt ISR
ISR(INT0_vect)
{
	cli();
	PORTB &=~ (1<<Relais);
	sei();
}




int main()
{
	
	
DDRB |= (1<<PB2)  ;//Ausgang
MCUCR|= (1<<ISC01);    //Falling edge
GIMSK|= (1<<INT0);     //INT0 aktivieren





while(1)
{
	
	
 //Schalterabfragen
 if(PINB & (1<<PB4) )
 {
	if(Status == 0)
	{
	 sei();
	 PORTB |= (1<<PB2);
	 _delay_ms(100);
	 Status = 1;
	}
	 
	
 }
 
//Verrieglung
if( !( PINB & (1<<PB4)) )
{
	Status = 0;
}



 }
}