// Pin configuration
int PUL = 25; // Pulse pin
int DIR = 26; // Direction pin
int ENA = 27; // Enable pin

void setup() {
  Serial.begin(115200); // Start serial communication
  pinMode(PUL, OUTPUT);
  pinMode(DIR, OUTPUT);
  pinMode(ENA, OUTPUT);

  digitalWrite(ENA, LOW); // Enable driver (some drivers may need LOW to enable)

  Serial.println("Stepper motor control started...");
  Serial.println("Microstepping: 1/8 (SW1=ON, SW2=OFF, SW3=OFF)");
  Serial.println("Running forward and backward...");
}

void loop() {
  // Move forward
  Serial.println("Moving forward...");
  digitalWrite(DIR, LOW); // Set direction forward
  for (int i = 0; i < 1600; i++) { // 1 full revolution (200 steps * 8 microsteps)
    digitalWrite(PUL, HIGH);
    delayMicroseconds(500); // Adjust speed here
    digitalWrite(PUL, LOW);
    delayMicroseconds(500);
  }

  delay(1000); // Pause between directions

  // Move backward
  Serial.println("Moving backward...");
  digitalWrite(DIR, HIGH); // Set direction backward
  for (int i = 0; i < 1600; i++) {
    digitalWrite(PUL, HIGH);
    delayMicroseconds(500);
    digitalWrite(PUL, LOW);
    delayMicroseconds(500);
  }

  delay(1000);
}