#include <avr/io.h>
int main(void){
DDRB |= (1 << PB2);
PORTB |= (1 << PB2);
DDRA &= ~(1 << PA7);

for(;;){
if (PINA & (1 << PA7)){
	PORTB |= (1 << PB2);
	}else{
		 PORTB &= ~(1 << PB2);	
		}
}
return 0;
}