const int stepPin = 6;
const int dirPin = 5;
const int enablePin = 8;
const int buttonPin = 12;

bool lastButtonState = HIGH;
bool motorRunning = false;

void setup() {
  pinMode(stepPin, OUTPUT);
  pinMode(dirPin, OUTPUT);
  pinMode(enablePin, OUTPUT);
  pinMode(buttonPin, INPUT_PULLUP); // aktiviramo interni pull-up otpornik

  digitalWrite(enablePin, LOW); // Omogući drajver (LOW = aktivno)
  digitalWrite(dirPin, HIGH);   // Smer kazaljke na satu
}

void loop() {
  bool currentButtonState = digitalRead(buttonPin);

  // Detekcija pritiska dugmeta
  if (lastButtonState == HIGH && currentButtonState == LOW) {
    motorRunning = true;
  }

  lastButtonState = currentButtonState;

  if (motorRunning) {
    rotateStepper(22);  // 22 kruga
    motorRunning = false; // Čekaj sledeći pritisak
  }
}

void rotateStepper(int rotations) {
  const int stepsPerRevolution = 200; // 1.8° stepper motor
  const int totalSteps = rotations * stepsPerRevolution;
  const int delayMicros = 1666; // 3 kruga/s = 600 koraka/s

  for (int i = 0; i < totalSteps; i++) {
    digitalWrite(stepPin, HIGH);
    delayMicroseconds(delayMicros / 2);
    digitalWrite(stepPin, LOW);
    delayMicroseconds(delayMicros / 2);
  }
}