int i;
	int u;

int main(void){

	DDRB = 0x01;		//PB0 = Ausgang(1), der Rest Eingänge(0)
	PORTB = 0x00;
	
	while(1){		//endlos Schleife
		
		
		
		
		if(PINB & (1<<PINB1)){			//Wenn am PB1 "High" dann...
			i = 0;
			
			while(i<=25){			//Servo nach Rechts...
				
				i++;
				PORTB |= (1<<PB0);
				_delay_ms(2.2);
				PORTB &= ~(1<<PB0);
				_delay_ms(18);
			}
			u = 1;
		}
		
		if(u=1){				//Wenn Servo am Rechtsanschlag dann...
			i = 0;
			
			while(i<=25){			//Servo nach Links...
					
				i++;
				PINB |= (1<<PB0);
				_delay_ms(1);
				PINB &= ~(1<<PB0);
				_delay_ms(19);
			}
			u = 0;
		}
	}
}