Untitled

void joc5() {
 int mask = 0;
  while (1) {
    
    for (int k = 0; k < 4; k++) {
      mask |= (1 << k) | (1 << (7 - k));
      digitalWrite(latchPin, LOW);
      shiftOut(dataPin, clockPin, MSBFIRST, mask);
      digitalWrite(latchPin, HIGH);
      delay(300);
    }
    for (int k = 3; k >= 0; k--) {
      mask &= ~((1 << k) | (1 << (7 - k)));
      digitalWrite(latchPin, LOW);
      shiftOut(dataPin, clockPin, MSBFIRST, mask);
      digitalWrite(latchPin, HIGH);
      delay(300);
    }
  }
}