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Motor Class

Overview​

This header file defines a MotorClass that manages the functionality of a DC motor in an Microcontroller-based project. The class is designed to control the motor's speed and direction using a motor driver.

Class Definition​

MotorClass​

The MotorClass is responsible for controlling a DC motor connected to the Microcontroller board through a motor driver. It provides methods to initialize the motor, set its speed, and control its start/stop operations.

Public Methods​

  1. MotorClass(int in1Pin, int in2Pin, int enaPin)

    • Constructor that initializes a new MotorClass object.
    • Parameters:
      • in1Pin: The Arduino pin number connected to the motor driver's IN1 input.
      • in2Pin: The Arduino pin number connected to the motor driver's IN2 input.
      • enaPin: The Arduino pin number connected to the motor driver's ENA (Enable) input.

  2. void begin()

    • Initializes the motor by setting up the necessary pins.

  3. void setSpeed(int speed)

    • Sets the speed of the motor.
    • Parameter: speed - The desired speed value (typically 0-255 for PWM control).

  4. void start()

    • Starts the motor rotation.

  5. void stop()

    • Stops the motor rotation.

Private Members​

  1. int _in1Pin

    • Stores the Arduino pin number connected to the motor driver's IN1 input.

  2. int _in2Pin

    • Stores the Arduino pin number connected to the motor driver's IN2 input.

  3. int _enaPin

    • Stores the Arduino pin number connected to the motor driver's ENA (Enable) input.

Global Instance​

The header file declares an external global instance of the MotorClass named Motor. This allows easy access to a single motor object throughout the project.

Usage​

To use this MotorClass in your project:

  1. Include this header file in your main Arduino sketch.
  2. Use the global Motor object to interact with the motor.
  3. Call Motor.begin() in your setup() function to initialize the motor.
  4. Use Motor.setSpeed(), Motor.start(), and Motor.stop() in your loop() function to control the motor.

Example:

void setup() {
  Motor.begin();
}

void loop() {
  Motor.setSpeed(200);  // Set speed to 200 (out of 255)
  Motor.start();        // Start the motor
  delay(5000);          // Run for 5 seconds
  Motor.stop();         // Stop the motor
  delay(2000);          // Wait for 2 seconds
}