int ledPin = D2;

void setup() {
    pinMode(ledPin, OUTPUT);
    digitalWrite(ledPin, LOW);
    Particle.function("led", ledControl);
    
}

void loop()
{
   // Nothing to do here
}


int ledControl(String command){
    int number = atoi(command);
    if (number != 0){
        for(int e=0; e<number; e++){
            digitalWrite(ledPin, HIGH);
            delay(500);
            digitalWrite(ledPin, LOW);
            delay(500);
        }
        return 1;
    }
    else{
        return -1;
    }
    
}