//Exercise 2_2

int ledPin = D2;

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

void loop() {

}

int myLedControl(String command) {
    int times = command.toInt();
    int state = LOW;
    for(int i = 1; i <= times * 2; i++) {
        if(i % 2 == 0) {
                state = HIGH;
                digitalWrite(ledPin, state);
                delay(500);
            } else {
            state = LOW;
            digitalWrite(ledPin, state);
            delay(500);
            }
    }
    digitalWrite(ledPin, LOW);
    return 1;
}