int i = 0;
bool test = true;
int pmc = 0;
void setup() {
// 0xaa  / 55

DDRD = 255;
pinMode(13, INPUT_PULLUP);
}

void loop() {
PORTD = 0;

if(digitalRead(13) == LOW && test == true)
{
  test = false;
  PORTD = PORTD | 1<<i;
  if(i < 7)
  {
    i++;
  }


  else
  {
    i = 0;
    PORTD = 0;
  }
}
else if (digitalRead(13) != LOW && test != true)
{
  test = true;
}

}