Datasheet

class Adafruit_DCMotor

The Adafruit_DCMotor class represents a DC motor attached to the shield. You must declare an Adafruit_DCMotor for

each motor in your system.

Adafruit_DCMotor(void);

The constructor takes no arguments. The motor object is typically initialized by assigning a motor object retrieved from

the shield class as below:

void run(uint8_t);

The run() function controls the motor state. The parameter can have one of 3 values:

FORWARD - Rotate in a forward direction

BACKWARD - Rotate in the reverse direction

RELEASE - Stop rotation

Note that the "FORWARD" and "BACKWARD" directions are arbitrary. If they do not match the actual direction of your

vehicle or robot, simple swap the motor leads.

Also note that "RELEASE" simply cuts power to the motor. It does not apply any braking.

void setSpeed(uint8_t);

The setSpeed() function controls the power level delivered to the motor. The speed parameter is a value between 0

and 255.

Note that setSpeed just controls the power delivered to the motor. The actual speed of the motor will depend on

several factors, including: The motor, the power supply and the load.

// Create the motor shield object with the default I2C address

Adafruit_MotorShield AFMS = Adafruit_MotorShield();

// Select which 'port' M1, M2, M3 or M4. In this case, M1

Adafruit_DCMotor *myMotor = AFMS.getMotor(1);

// You can also make another motor on port M2

Adafruit_DCMotor *myOtherMotor = AFMS.getMotor(2);