+(function (global, factory) {

if (typeof exports === 'undefined') {

factory(global.webduino || {});

} else {

module.exports = factory;

}

}(this, function (scope) {

'use strict';

var PinEvent = scope.PinEvent,

Pin = scope.Pin,

Module = scope.Module;

var SoundEvent = {

DETECTED: 'detected',

ENDED: 'ended'

};

function Sound(board, pin) {

Module.call(this);

this._type = 'FC_04';

this._board = board;

this._pin = pin;

board.setDigitalPinMode(pin.number, Pin.DIN);

this._pin.value = Pin.HIGH;

this._pin.on(PinEvent.CHANGE, onPinChange.bind(this));

}

function onPinChange(pin) {

if (pin.value === Pin.LOW) {

this.emit(SoundEvent.DETECTED);

} else {

this.emit(SoundEvent.ENDED);

}

}

Sound.prototype = Object.create(Module.prototype, {

constructor: {

value: Sound

}

});

scope.module.SoundEvent = SoundEvent;

scope.module.Sound = Sound;

}));