Small program to trigger a IFTTT event with a button on a Particle.io Photon

doorbell.cpp

/**
 * Simple doorbell to IFTTT program for Particle.io Photon
 * - Connect the button to GND and D0.
 * - Connect your particle.io account to IFTTT and setup a trigger for 'ring'
 */
int button = D0;

void setup() {
    pinMode(button, INPUT_PULLUP);
    RGB.control(true);
}

void loop() {
    if (digitalRead(button)==LOW) {
        Particle.publish("ring"); //publish event aka. trigger IFTTT
        while (digitalRead(button)==LOW) { // Wait for bellringer to let go of the doorbell
            RGB.color(0, 0, 255); //LED to blue
            delay(100);
        }
        RGB.color(0, 255, 0); //LED to green
        delay(2000);
    } else {
        //Awaiting someone to ring the door
        RGB.color(255, 0, 0); //LED to red
    }
}