pilo – Blame information for rev 1
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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1 | office | 1 | #!/usr/bin/env nodejs |
| 2 | /////////////////////////////////////////////////////////////////////////// |
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| 3 | // Copyright (C) Wizardry and Steamworks 2018 - License: GNU GPLv3 // |
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| 4 | // Please see: http://www.gnu.org/licenses/gpl.html for legal details, // |
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| 5 | // rights of fair usage, the disclaimer and warranty conditions. // |
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| 6 | /////////////////////////////////////////////////////////////////////////// |
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| 7 | |||
| 8 | const Gpio = require('onoff').Gpio |
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| 9 | const mqtt = require('mqtt') |
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| 10 | const YAML = require('yamljs'); |
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| 11 | const winston = require('winston') |
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| 12 | |||
| 13 | // Load configuration file. |
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| 14 | const config = YAML.load('config.yml'); |
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| 15 | |||
| 16 | // Generate GPIO pins for configuration. |
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| 17 | var COOL = {}; |
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| 18 | for(var i in config.GPIO) { |
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| 19 | if(!config.GPIO.hasOwnProperty(i)) |
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| 20 | continue; |
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| 21 | |||
| 22 | if(config.GPIO[i] === -1) |
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| 23 | continue; |
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| 24 | |||
| 25 | COOL[i] = new Gpio(config.GPIO[i], 'out') |
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| 26 | } |
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| 27 | |||
| 28 | // Set up logger. |
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| 29 | winston.add(winston.transports.File, {filename: config.log}) |
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| 30 | |||
| 31 | // Initiate connection to MQTT. |
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| 32 | const client = mqtt.connect(config.mqtt.url, {queueQoSZero: false}) |
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| 33 | |||
| 34 | client.on('connect', function () { |
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| 35 | winston.info('Connected to MQTT server') |
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| 36 | client.subscribe(config.mqtt.topic) |
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| 37 | }) |
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| 38 | |||
| 39 | client.on('message', function (topic, message) { |
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| 40 | if(message.length === 0) |
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| 41 | return; |
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| 42 | |||
| 43 | // Remove any retained message. |
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| 44 | client.publish(topic, "", {retain: true}) |
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| 45 | |||
| 46 | message. |
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| 47 | message = message.toString() |
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| 48 | winston.info('Received message: ' + message) |
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| 49 | if(!(message in config.GPIO)) { |
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| 50 | winston.warn('Request to toggle unknown GPIO: ' + message) |
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| 51 | return; |
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| 52 | } |
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| 53 | |||
| 54 | var pin = config.GPIO[message] |
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| 55 | if(pin === -1) { |
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| 56 | winston.warn('GPIO pin for "' + message + '" is not configured') |
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| 57 | return; |
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| 58 | } |
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| 59 | |||
| 60 | winston.info('Toggling pin ' + pin + ' for ' + message) |
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| 61 | COOL[message].write(1, (err) => { |
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| 62 | if(err) { |
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| 63 | winston.err('Unable to toggle pin ' + pin + ' error message received is: ' + err.message) |
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| 64 | return; |
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| 65 | } |
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| 66 | |||
| 67 | setTimeout(function() { |
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| 68 | winston.info('Toggled pin ' + pin + ' for ' + message) |
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| 69 | COOL[message].write(0) |
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| 70 | }, 1000) |
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| 71 | }) |
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| 72 | }) |