#define SERIELEDATAPIN 4
#define CLOCK 2
#define DOORGEEFPIN 3
#define BUTTOPIN 9

//byte cijfers [] = {252, 96, 218, 242, 102, 182, 190, 224, 254, 246};
byte cijfers [] = { 4, 8, 16, 32, 64, 128};


/*byte cijfers [] = {B11111100,
                   B01100000,
                   B11011010,
                   B11110010,
                   B01100110,
                   B10110110,
                   B10111110,
                   B11100000,
                   B11111110,
                   B11110110
                  };*/
int arraySize = sizeof cijfers / sizeof cijfers [0];
volatile boolean displayState = false;

void checkButton();

void setup() {
  Serial.begin(115200);
  pinMode(SERIELEDATAPIN, OUTPUT);
  pinMode(CLOCK, OUTPUT);
  pinMode(DOORGEEFPIN, OUTPUT);
  pinMode(BUTTOPIN, INPUT_PULLUP);
  attachInterrupt(digitalPinToInterrupt(BUTTOPIN), checkButton, FALLING);
}

void loop() {
  //if (displayState) {
  for (int i = 0; i < arraySize ; i++) {
    digitalWrite(DOORGEEFPIN, LOW);
    shiftOut(SERIELEDATAPIN, CLOCK, LSBFIRST, cijfers[i]);
    digitalWrite(DOORGEEFPIN, HIGH);
    delay(100);
  }/*
  } else {
    digitalWrite(DOORGEEFPIN, LOW);
    shiftOut(SERIELEDATAPIN, CLOCK, LSBFIRST, B00000001);
    digitalWrite(DOORGEEFPIN, HIGH);
  }

  /*for (byte i = 0; i < 254 ; i++) {
    digitalWrite(DOORGEEFPIN, LOW);
    shiftOut(SERIELEDATAPIN, CLOCK, LSBFIRST, i);
    digitalWrite(DOORGEEFPIN, HIGH);
    delay(100);
  }*/

}
void checkButton() {
  displayState = !displayState;
}