// Define the pins used for the motor control and speed
const int speedPin = 11;
const int dir1 = 9;
const int dir2 = 10;
int motorSpeed = 0;  // Set the initial motor speed to 0

void setup() {
  // Initialize the serial communication and set pin modes
  Serial.begin(9600);
  pinMode(speedPin, OUTPUT);
  pinMode(dir1, OUTPUT);
  pinMode(dir2, OUTPUT);
}

void loop() {
  //4.5.2
  // Read the value from the potentiometer and map it to a motor speed between 0 and 255
  int potValue = analogRead(A0);
  motorSpeed = map(potValue, 0, 1023, 0, 255);

  // Set the motor direction
  digitalWrite(dir1, LOW);
  digitalWrite(dir2, HIGH);
  
  
// Apply a "kick" to the motor to start it
  analogWrite(speedPin, 255);
  delay(25);

/* 4.5.3
// Determine the motor direction based on the potentiometer value
  if (potValue < 512) {
    // Set the motor direction to forward
    digitalWrite(dir1, LOW);
    digitalWrite(dir2, HIGH);
    Serial.println(" DC motor rotates in FORWARD direction");
  } else {
    // Set the motor direction to reverse
    digitalWrite(dir1, HIGH);
    digitalWrite(dir2, LOW);
    Serial.println(" DC motor rotates in REVERSE direction");
  }
  
  */

  
  // Set the motor speed and run it for a period of time
  analogWrite(speedPin, motorSpeed);
  delay(50);
  
  // Print the current motor speed to the serial monitor
  Serial.print("Current speed: ");
  Serial.println(motorSpeed);


}