#include "avr/io.h"

#define ENABLE 0
#define MTR_1 1
#define MTR_2 2
#define SW (PINA&0x80)
int main ( )
{
	DDRA = 0x7F;	
	DDRB = 0xFF;	
	PORTB = PORTB & (~(1<<ENABLE));
	PORTB = PORTB & (~(1<<MTR_1));
	PORTB = PORTB & (~(1<<MTR_2));

	while (1)
	{
		PORTB = PORTB | (1<<ENABLE);

		if(SW == 1)
		{
			PORTB = PORTB | (1<<MTR_1);   
			PORTB = PORTB & (~(1<<MTR_2)); 
		}
		else{
			PORTB = PORTB & (~(1<<MTR_1));
			PORTB = PORTB | (1<<MTR_2);    
		}
	}
	return 0;
}