Нужна помощь с кодом под Arduino

#include

#include

#include 'utility/Adafruit_MS_PWMServoDriver.h'

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

Adafruit_MotorShield AFMS = Adafruit_MotorShield();

// Connect a stepper motor with 200 steps per revolution (1.8 degree)

// to motor port #2 (M3 and M4)

Adafruit_StepperMotor *myMotor = AFMS.getStepper(200, 1);

void setup() {

Serial.begin(9600); // open serial port

AFMS.begin(); // create with the default frequency 1.6KHz

myMotor->setSpeed(1); // 1 rpm

myMotor->step(1, FORWARD, MICROSTEP); // take a step to initialize position

delay(250); // settle mechanics for 250 ms

myMotor->release(); // turn off current

}

void loop() {

static int counter = 0;

if(Serial.available()>0) // is there any unread serial data?

{

char ch = Serial.read(); // read a character from the serial port

Serial.print('echo');

Serial.println(ch); // echo back so that it is displayed in DAVID debug console

if (ch == '2') // is it the character for the number 2?

{

counter = counter + 1; // increment the scan count

myMotor->step(10, FORWARD, MICROSTEP); // take a step

delay(250); // settle mechanics for 250 ms

myMotor->release(); // turn off current

if (counter == 16) // we have performed a full rotation

{

counter = 0; // reset for next scan

}

else

{

Serial.println('S'); // Tell DAVID to do another Scan

}

}

} // end Serial.available

}