//*angle: Set the Angle

Min:0°(If the Angle is equal to 0°,The motor

will not stop spinning)

//*speed: Set the speed

Min:8

//*dir: Set Orientation

CW or CCW

//void getDir()

//*This function can get the current rotation direction of the motor

DFRobot_Stepper stepperA(SA);

DFRobot_Motor motor4(M4);

void reverse_4()

{

motor4.start(!motor4.getDir());

}

void reverse_SA()

{

stepperA.start(0, 12, !stepperA.getDir());

}

void setup() {

//initialize serial communication at 9600 bits per second:

Serial.begin(115200);

//join i2c bus (address optional for master)

Wire.begin();

//Initialize motor drive chip of stepping motor (Group A) and ¾ group of D.

C motor

stepperA.init();

motor4.init();

//Set the initial direction

motor4.start(CW);

stepperA.start(0, 12, CW);

delay(1500);

}