node_helper.js

/* Magic Mirror
 * Node Helper: MMM-Hover
 *
 * By Dancj
 * MIT Licensed.
 */

var NodeHelper = require("node_helper");
var Hover 	   = require("hover-nodejs");

module.exports = NodeHelper.create({
	start: function () {
		this.started = false;
	},

	// Override socketNotificationReceived method.

	/* socketNotificationReceived(notification, payload)
	 * This method is called when a socket notification arrives.
	 *
	 * argument notification string - The identifier of the noitication.
	 * argument payload mixed - The payload of the notification.
	 */
	socketNotificationReceived: function(notification, payload) {
		if (notification === "CONFIG" && this.started == false) {
			const self = this;
			self.config = payload;

			var i2cBus = 1;
			var hover = new Hover(
				self.config.i2cAddress,
				self.config.pinTs,
				self.config.pinReset,
				i2cBus);

			hover.init().then(function() {
				if (self.config.debug) {
					console.log("[Hover] board ready for input");
				}
				hover.listen(
					function (event) {
						if (self.config.debug) {
							console.log("[Hover] handled event: " + event);
						}

						if (event.substr(0,3) === "tap") {
							self.sendSocketNotification("TAP", event.substr(4));
						} else if (event.substr(0,5) === "swipe"){
							self.sendSocketNotification("SWIPE", event.substr(6));
						} else {
							console.log("[Hover] unknown event received from board: " + event);
						}
					},
					self.config.pollRate || self.config.defaultRate
				);
			}, function (err) {
				console.error("[Hover] Could not init hover board: " + err);
			});

			self.started = true;
		}
	}

});