// Define the varibles and call Servo library with an instance called "myServo"
int servoPin = A3;
Servo myServo;
int servoPos = 0;


void setup() {
// Attach the Servo to pin A3 as a reference
myServo.attach (A3);
// Register variable servoControl to particle cloud (input named 'servo') to control Servo from cloud
Particle.function ("servo", servoControl);
// Keep a cloud variable for the current position
Particle.variable ("servoPos", &servoPos, INT);

}

void loop() {

}

int servoControl(String command)
{
    
    // convert string command from Particl cloud to an integer we can use
    int newPos = command.toInt();
    // constrain the entered position so it is between 0 - 180
    servoPos = constrain( newPos, 0, 180);
    // set the Servo
    myServo.write( servoPos);
    // finished
    return 1;

}