const int stepPin = 3;
const int dirPin = 2;

int forwardButton = 7;
int reverseButton = 6;

int leftLimitSwitch = 5;
int rightLimitSwitch = 4;

int setSpeed = 800;
int forwardButtonState, reverseButtonState;

void setup() {
  pinMode(stepPin, OUTPUT);
  pinMode(dirPin, OUTPUT);
  pinMode(forwardButton, INPUT_PULLUP);
  pinMode(reverseButton, INPUT_PULLUP);
  pinMode(leftLimitSwitch, INPUT_PULLUP);
  pinMode(rightLimitSwitch, INPUT_PULLUP);

  digitalWrite(dirPin, LOW);
}

void loop() {
  forwardButtonState = digitalRead(forwardButton);
  reverseButtonState = digitalRead(reverseButton);
  delay(100);
  if (forwardButtonState == LOW) {
    digitalWrite(dirPin, LOW);
    while (digitalRead(leftLimitSwitch) == LOW) {
      digitalWrite(stepPin, HIGH);
      delayMicroseconds(setSpeed);
      digitalWrite(stepPin, LOW);
      delayMicroseconds(setSpeed);
    }
  }
  else if (reverseButtonState == LOW) {
    digitalWrite(dirPin, HIGH);
    while (digitalRead(rightLimitSwitch) == LOW) {
      digitalWrite(stepPin, HIGH);
      delayMicroseconds(setSpeed);
      digitalWrite(stepPin, LOW);
      delayMicroseconds(setSpeed);
    }
  }
}