Adding mqtt control

index.js

@@ -3,10 +3,18 @@ const schedule = require('node-schedule')
 const fs = require('fs')
 const sharp = require('sharp')
 const inky = require('@aeroniemi/inky')
+const mqtt = require('mqtt')
 
 const frame = new inky.Impression73()
 const folder = './gallery/'
 
+// Connect to MQTT
+const mqttclient = mqtt.connect('mqtt://mqtt.srv.jnf.me', {
+	clientId: 'pictureframe_' + Math.random().toString(16).substr(2, 8),
+	username: 'pictureframe',
+	password: 'pictureframe'
+})
+
 var ticker = false
 var filelist = false
 
@@ -57,6 +65,31 @@ function displayImage(filename) {
 	})
 }
 
+function displayWifi() {
+	console.log('Displaying wifi connection information for 10 minutes')
+	clearTimeout(ticker)
+	frame.display_png('img/wifi.png')
+	frame.show()
+	ticker = setTimeout(displayAlbum, 600000)
+}
+
+// Subscribe to our MQTT topic...
+mqttclient.on('connect', () => {
+	mqttclient.subscribe('pictureframe/command')
+})
+
+// Listen for MQTT command messages
+mqttclient.on('message', (topic, message) => {
+	message = message.toString()
+	console.log('MQTT command received: ' + message)
+
+	if (message == 'wifi') displayWifi()
+	if (message == 'reset') {
+		clearTimeout(ticker)
+		downloadImgs()
+	}
+})
+
 // We start by downloading images. Other functions will be called if this is successful...
 downloadImgs()