Created
November 8, 2016 17:08
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HAP-NodeJS MQTT Temperature and Humidity Sensor
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var Accessory = require('../').Accessory; | |
var Service = require('../').Service; | |
var Characteristic = require('../').Characteristic; | |
var uuid = require('../').uuid; | |
var SENSOR = { | |
currentTemperature: 25, | |
currentHumidity: 50, | |
getTemperature: function() { | |
console.log("Getting the current temperature!"); | |
return SENSOR.currentTemperature; | |
}, | |
getHumidity: function() { | |
console.log("Getting the current humidity!"); | |
return SENSOR.currentHumidity; | |
} | |
} | |
// MQTT Setup | |
var mqtt = require('mqtt'); | |
console.log("Connecting to MQTT broker..."); | |
var mqtt = require('mqtt'); | |
var options = { | |
port: 1883, | |
host: 'localhost', | |
clientId: 'Dorm Sensor' | |
}; | |
var client = mqtt.connect(options); | |
console.log("Dorm Sensor Connected to MQTT broker"); | |
client.subscribe('homekit/sensor/#'); | |
client.on('message', function(topic, message) { | |
console.log(parseFloat(message)); | |
// message is Buffer | |
data = JSON.parse(message); | |
if (data === null) {return null} | |
if(topic == 'homekit/sensor/temperature') { | |
SENSOR.currentTemperature = parseFloat(data); | |
} else if (topic == 'homekit/sensor/humidity') { | |
SENSOR.currentHumidity = parseFloat(data); | |
} | |
}); | |
// Generate a consistent UUID for our Temperature Sensor Accessory that will remain the same | |
// even when restarting our server. We use the `uuid.generate` helper function to create | |
// a deterministic UUID based on an arbitrary "namespace" and the string "sensor". | |
var sensorUUID = uuid.generate('hap-nodejs:accessories:sensor'); | |
// This is the Accessory that we'll return to HAP-NodeJS that represents our fake lock. | |
var sensor = exports.accessory = new Accessory('Sensor', sensorUUID); | |
// Add properties for publishing (in case we're using Core.js and not BridgedCore.js) | |
sensor.username = "C4:5D:1A:1E:52:FA"; | |
sensor.pincode = "031-45-154"; | |
// Add the actual TemperatureSensor Service. | |
// We can see the complete list of Services and Characteristics in `lib/gen/HomeKitTypes.js` | |
sensor | |
.addService(Service.TemperatureSensor) | |
.getCharacteristic(Characteristic.CurrentTemperature) | |
.on('get', function(callback) { | |
// return our current value | |
callback(null, SENSOR.getTemperature()); | |
}); | |
// Add the Humidity Service | |
sensor | |
.addService(Service.HumiditySensor) | |
.getCharacteristic(Characteristic.CurrentRelativeHumidity) | |
.on('get', function(callback) { | |
// return our current value | |
callback(null, SENSOR.getHumidity()); | |
}); | |
// update readings every 10 seconds | |
setInterval(function() { | |
// update the characteristic value so interested iOS devices can get notified | |
sensor | |
.getService(Service.TemperatureSensor) | |
.setCharacteristic(Characteristic.CurrentTemperature, SENSOR.currentTemperature); | |
sensor | |
.getService(Service.HumiditySensor) | |
.setCharacteristic(Characteristic.CurrentRelativeHumidity, SENSOR.currentHumidity); | |
}, 3000); |
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Thanks. working nicely.