const int STEP_PIN = 3;
const int DIR_PIN  = 4;

const int limitSwitch = 7;
const int buttonPlay  = 6;
const int buttonStop  = 5;


const int DELAY_STEP = 1000;

bool stringStatus = false;
bool isPlay = false;

const int buzz = 2;

void setup() {

  Serial.begin(9600);

  pinMode(limitSwitch, INPUT);
  pinMode(buttonPlay, INPUT);
  pinMode(buttonStop, INPUT);

  pinMode(buzz, OUTPUT);

  pinMode(STEP_PIN, OUTPUT);
  pinMode(DIR_PIN, OUTPUT);
}


void maju() {

  digitalWrite(DIR_PIN, HIGH);

  digitalWrite(STEP_PIN, HIGH);
  delayMicroseconds(DELAY_STEP);

  digitalWrite(STEP_PIN, LOW);
  delayMicroseconds(DELAY_STEP);
}


void mundur() {

  digitalWrite(DIR_PIN, LOW);

  digitalWrite(STEP_PIN, HIGH);
  delayMicroseconds(DELAY_STEP);

  digitalWrite(STEP_PIN, LOW);
  delayMicroseconds(DELAY_STEP);
}

void stopMotor() {

  digitalWrite(STEP_PIN, LOW);
}


void play() {

  if (digitalRead(buttonPlay) == HIGH) {

    isPlay = true;

    Serial.println("play");

    delay(250);
  }
}

void stop() {

  if (digitalRead(buttonStop) == HIGH) {

    isPlay = false;

    Serial.println("stop");

    delay(250);
  }
}

void status() {

  if (digitalRead(limitSwitch) == HIGH) {

    stringStatus = true;

    Serial.println("safe");
  }
  else {

    stringStatus = false;
  }
}


void running() {

  play();

  stop();

  status();


  if (isPlay == true && stringStatus == true) {

    maju();

  }
  else if(isPlay == true && stringStatus == false){
    digitalWrite(buzz, HIGH);
    Serial.println("putus");
  }
  else {
    digitalWrite(buzz, LOW);
    stopMotor();
  }
}

void loop() {

  running();

}