265 lines
11 KiB
JavaScript
265 lines
11 KiB
JavaScript
// TODOs: Add tests for PoF and Vacuum switches, add delays for shutting down blower, test logic for igniter
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// TODO: Move these to config
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// Physical Pin numbers for GPIO
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const augerPin = 26; // Pin for controlling the relay for the pellet auger motor.
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// Require the package for pulling version numbers
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const package = require('./package.json');
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// Import the config file
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var config = require('./config.json');
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config.timestamps.procStart = Date.now();
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// Get environment variables
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const dotenv = require('dotenv').config();
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// Module for working with files
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const fs = require('fs');
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const { time } = require('console');
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const main = (gpio) => {
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functions.commands.refreshConfig().then(res => {
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// If the auger is enabled
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if (config.status.auger == 1) {
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// Run a cycle of the auger
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functions.auger.cycle(gpio).then(res => {
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if (config.debugMode) console.log(`[${(Date.now() - config.timestamps.procStart)/1000}] I: ${res}`);
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// Recursion ecursion cursion ursion rsion sion ion on n
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main(gpio);
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}).catch(err => {
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if (config.debugMode) console.log(`[${(Date.now() - config.timestamps.procStart)/1000}] E: ${err}`);
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});
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} else {
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// If the auger is disabled
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functions.commands.pause().then(res => {
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main(gpio);
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}).catch(err => {
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if (config.debugMode) console.log(`[${(Date.now() - config.timestamps.procStart)/1000}] E: ${err}`);
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main(gpio);
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});
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}
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}).catch(rej => {
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console.log(`[${(Date.now() - config.timestamps.procStart)/1000}] E: Problem refreshing the config file.`);
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main(gpio);
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});
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}
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// The functions we'll export to be used in other files
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const functions = {
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auger: {
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// Gets called once the Auger Pin has been setup by rpi-gpio
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ready(err) {
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if (err) throw err;
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console.log('Auger GPIO Ready');
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return;
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},
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// Turns the auger on (Pin 7 high)
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on(gpio) {
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return new Promise((resolve) => {
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if (process.env.ONPI == 'true') {
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gpio.write(augerPin, true, function(err) {
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if (err) throw err;
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resolve('Auger turned on.');
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});
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} else {
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resolve('Simulated auger turned on.');
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}
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});
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},
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// Turns the auger off (pin 7 low)
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off(gpio) {
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return new Promise((resolve) => {
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if (process.env.ONPI == 'true') {
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gpio.write(augerPin, false, function(err) {
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if (err) throw err;
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resolve('Auger turned off.');
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});
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} else {
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resolve('Simulated auger turned off.');
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}
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});
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},
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// Cycles the auger using the two functions above this one (functions.auger.on() and functions.auger.off())
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// Sleeps in between cycles using functions.sleep()
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cycle(gpio) {
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return new Promise((resolve) => {
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// Turn the auger on
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this.on(gpio).then((res) => {
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// Log action if in debug mode
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// if (config.debugMode) console.log(`[${(Date.now() - config.timestamps.procStart)/1000}] I: ${res}`);
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// Sleep for the time set in env variables
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functions.sleep(config.intervals.augerOn).then((res) => {
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// Log action if in debug mode
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// if (config.debugMode) console.log(`[${(Date.now() - config.timestamps.procStart)/1000}] I: ${res}`);
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// Turn the auger off
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this.off(gpio).then((res) => {
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// Log action if in debug mode
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// if (config.debugMode) console.log(`[${(Date.now() - config.timestamps.procStart)/1000}] I: ${res}`);
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// Sleep for the time set in env variables
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functions.sleep(config.intervals.augerOff).then((res) => {
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// Log action if in debug mode
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// if (config.debugMode) console.log(`[${(Date.now() - config.timestamps.procStart)/1000}] I: ${res}`);
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// Resolve the promise, letting the main script know the cycle is complete
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resolve(`Auger cycled (${config.intervals.augerOn}/${config.intervals.augerOff})`);
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});
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});
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});
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});
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});
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},
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},
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commands: {
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// Prepare the stove for starting
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startup () {
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// Basic startup just enables the auger
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config.status.auger = 1;
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console.log(`[${(Date.now() - config.timestamps.procStart)/1000}] I: Auger enabled.`);
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return;
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},
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shutdown() {
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// Basic shutdown only needs to disable the auger
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config.status.auger = 0;
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console.log(`[${(Date.now() - config.timestamps.procStart)/1000}] I: Auger disabled.`);
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},
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// Pauses the script for the time defined in env variables
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pause() {
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return new Promise((resolve) => {
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if (config.debugMode) console.log(`[${(Date.now() - config.timestamps.procStart)/1000}] I: Pausing for ${config.intervals.pause}ms`);
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functions.sleep(config.intervals.pause).then(() => { resolve(); });
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});
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},
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// Reload the environment variables on the fly
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reload(envs) {
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return new Promise((resolve) => {
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// Re-require dotenv because inheritance in js sucks
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const dotenv = require('dotenv').config({ override: true });
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// Delete the reload file
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fs.unlink('./reload', (err) => {
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if (err) throw err;
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if (config.debugMode) console.log('Deleted reload file.');
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});
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// Print out the new environment variables
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// This should be printed regardless of debug status, maybe prettied up TODO?
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console.log('Reloaded environment variables.');
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console.log(`ONTIME=${config.intervals.augerOn}\nOFFTIME=${config.intervals.augerOff}\nPAUSETIME=${config.intervals.pause}\nDEBUG=${config.debugMode}\nONPI=${process.env.ONPI}`);
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// Resolve the promise, letting the main script know we're done reloading the variables and the cycle can continue
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resolve();
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});
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},
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refreshConfig(newSettings) {
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return new Promise((resolve, reject) => {
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// When the reload button is pressed, the call to this function will contain new config values
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// {
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// augerOff: 500,
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// augerOn: 1500,
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// pause: 5000
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// }
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if (newSettings != undefined) {
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config.intervals.augerOff = newSettings.augerOff;
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config.intervals.augerOn = newSettings.augerOn;
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config.intervals.pause = newSettings.pause;
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console.log(`[${(Date.now() - config.timestamps.procStart)/1000}] I: Intervals updated: (${newSettings.augerOn}/${newSettings.augerOff}/${newSettings.pause})`);
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}
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fs.writeFile('./config.json', JSON.stringify(config), (err) => {
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if (err) reject(err);
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resolve();
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});
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})
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}
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},
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// Sleeps for any given milliseconds
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sleep(ms) {
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return new Promise((resolve) => {
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// if (config.debugMode) console.log(`Sleeping for ${ms}ms`);
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// Function to be called when setTimeout finishes
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const finish = () => {
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// Resolve the promise
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resolve(`Slept for ${ms}ms`);
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};
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// The actual sleep function, sleeps for ms then calls finish()
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setTimeout(finish, ms);
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});
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},
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// Initializes rpi-gpio, or resolves if not on a raspberry pi
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init(gpio) {
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fs.readFile('./templates/config.json', (err, data) => {
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fs.writeFile('./config.json', data, (err) => {
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if (err) throw err;
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config = require('./config.json');
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})
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})
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// TODO this boot splash needs updating
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return new Promise((resolve, reject) => {
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// Boot/About/Info
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console.log(`== Lennox Winslow PS40
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== Pellet Stove Control Panel
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== Author: Skylar Grant
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== Version: v${package.version}
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==
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== Startup Time: ${new Date().toISOString()}
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==
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== Environment variables:
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== == ONTIME=${config.intervals.augerOn}
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== == OFFTIME=${config.intervals.augerOff}
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== == PAUSETIME=${config.intervals.pause}
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== == DEBUG=${config.debugMode}
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== == ONPI=${process.env.ONPI}`);
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// Set up GPIO 4 (pysical pin 7) as output, then call functions.auger.ready()
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if (process.env.ONPI == 'true') {
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// Init the Auger pin
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gpio.setup(augerPin, gpio.DIR_OUT, (err) => {
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if (err) reject(err);
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if (config.debugMode) console.log('== Auger pin initialized.');
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// Resolve the promise now that all pins have been initialized
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resolve('== GPIO Initialized.');
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});
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} else {
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// Resolve the promise
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resolve('== GPIO Not Available');
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}
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});
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},
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time(stamp) {
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const time = new Date(stamp);
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return `${time.getHours()}:${time.getMinutes()}:${time.getSeconds()}`;
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}
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}
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// Setup for use with the Pi's GPIO pins
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switch (process.env.ONPI) {
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case 'true':
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console.log(`== Running on a Raspberry Pi.`);
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var gpio = require('rpi-gpio');
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functions.init(gpio).then((res) => {
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console.log(`[${(Date.now() - config.timestamps.procStart)/1000}] I: ${res}`);
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main(gpio);
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}).catch(rej => {
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console.log(`[${(Date.now() - config.timestamps.procStart)/1000}] E: Error during initialization: ${rej}`);
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process.exit(1);
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});
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break;
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case 'false':
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console.log(`I: Not running on a Raspberry Pi.`);
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var gpio = 'gpio';
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functions.init(gpio).then(res => {
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console.log(`[${(Date.now() - config.timestamps.procStart)/1000}] I: ${res}`);
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main(gpio);
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}).catch(rej => {
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console.log(`[${(Date.now() - config.timestamps.procStart)/1000}] E: Error during initialization: ${rej}`);
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process.exit(1);
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});
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break;
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default:
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console.log(`[${Date.now() - config.timestamps.procStart}] E: Problem with ENV file.`);
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process.exit(1);
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break;
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}
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// Export the above object, functions, as a module
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module.exports = { functions }; |