// Define pin connections
const int STEP_PIN = 3;
const int DIR_PIN = 4;

// Variables to store the number of steps, pulse delay time, and direction
int steps = 0;
int pulse_delay_time = 0;
int direction = 0;

void setup() {
  pinMode(DIR_PIN, OUTPUT);    // Set DIR_PIN as output
  pinMode(STEP_PIN, OUTPUT);   // Set STEP_PIN as output
  Serial.begin(9600);          // Initialize the serial port
  Serial.println("Enter steps, pulse delay time and direction:"); // Prompt user for input
}

void loop() {
  if (Serial.available() > 0) {  // Check if there is serial input available
    steps = Serial.parseInt();   // Read the number of steps from serial input
    pulse_delay_time = Serial.parseInt(); // Read the pulse delay time from serial input
    direction = Serial.parseInt(); // Read the direction from serial input

    // Print the entered values to the serial monitor
    Serial.print("Step: ");
    Serial.print(steps);
    Serial.print(" ");
    Serial.print("Delay: ");
    Serial.print(pulse_delay_time);
    Serial.print(" ");
    Serial.print("Direction: ");
    Serial.print(direction);
    Serial.println(" ");

    // Check if the entered values are valid
    if (steps > 0 && pulse_delay_time > 0 && (direction == 0 || direction == 1)) {
      digitalWrite(DIR_PIN, direction);  // Set the direction
      for (int i = 0; i < steps; i++) {  // Loop to generate the steps
        digitalWrite(STEP_PIN, HIGH);    // Set STEP_PIN high
        delayMicroseconds(pulse_delay_time); // Wait for the pulse delay time
        digitalWrite(STEP_PIN, LOW);     // Set STEP_PIN low
        delayMicroseconds(pulse_delay_time); // Wait for the pulse delay time
      }
    }

    // Reset the variables
  }
}