#include <avr\io.h>              // Most basic include files
#include <avr\interrupt.h>       // Add thenecessary ones
#include <avr\signal.h>         // here
//#define F_CPU 11059200U
#include <util\delay.h>


#define MOVER(x) (x << 1 | x >> 7)
#define MOVEL(x) (x >> 1 | x << 7)


int main(void) {
DDRE = 0xff;
DDRA = 0xff;
PORTE = _BV(PE3);
PORTA = 1;


uint8_t state4 = 0;
uint8_t buttonState4 = 0;

uint8_t state5 = 0;
uint8_t buttonState5 = 0;

uint8_t dir = 1;


  while(1) {
	if(((PIND & _BV(PD4)) == 0) && buttonState4 == 0){
		state4 = !state4;
		buttonState4 = 1;
	}


	if((PIND & _BV(PD4)) != 0)
		buttonState4 = 0;

  	if(state4) {
 		dir = 0;
 		state4 = 0;
 	}



	if(((PIND & _BV(PD5)) == 0) && buttonState5 == 0){
		state5 = !state5;
		buttonState5 = 1;
	}

	if((PIND & _BV(PD5)) != 0)
		buttonState5 = 0;

  	if(state5) {
 		dir = 1;
 		state5 = 0;
 	}

  	_delay_ms(100);
  	if(dir)
 		PORTA = MOVER(PORTA);
	else
  		PORTA = MOVEL(PORTA);

 }
}