#define BUTTON_PIN 7

byte lastButtonState = LOW;

unsigned long debounceDuration = 50; // millis
unsigned long lastTimeButtonStateChanged = 0;

int val=0;
int dt=100;

void setup() {
  Serial.begin(9600);
  pinMode(BUTTON_PIN, INPUT);

  pinMode(2, INPUT);
  pinMode(3, INPUT);
  pinMode(4, INPUT);
  pinMode(5, INPUT);

  pinMode(9, OUTPUT);
  pinMode(10, OUTPUT);
  pinMode(11, OUTPUT);
  pinMode(12, OUTPUT);
}

void loop() {
  if (millis() - lastTimeButtonStateChanged > debounceDuration) {
      byte buttonState = digitalRead(BUTTON_PIN);
      if (buttonState != lastButtonState) {
      lastTimeButtonStateChanged = millis();
      lastButtonState = buttonState;
      if (buttonState == LOW) {
        test();
      
      }
    }
  }

  delay(dt);
  Serial.println("STOP");
}


void test() {
  digitalWrite(9, HIGH);
  digitalWrite(10, HIGH);
  digitalWrite(11, HIGH);
  digitalWrite(12, HIGH);

  digitalRead(2);
  digitalRead(3);
  digitalRead(4);
  digitalRead(5);
  if (digitalRead(2) == HIGH & digitalRead(3) == HIGH & digitalRead(4) == HIGH & digitalRead(5) == HIGH) {
      int val=1;
      digitalWrite(13, HIGH);
  }
  if (val == 1) {
      digitalWrite(13, LOW);
      Serial.println("OK");
  }
  else {
      Serial.println("NOK");
  }

}