Finish moving and testing functions file, Promises
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Skylar Grant
parent
5ba4fbada9
commit
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130
functions.js
130
functions.js
@ -2,8 +2,16 @@
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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 { resolve } = require('path');
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// Setup for use with the Pi's GPIO pins
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const gpio = require('rpi-gpio');
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if (process.env.ONPI == 'true') {
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console.log('Running on a Raspberry Pi.');
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const gpio = require('rpi-gpio');
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} else if (process.env.ONPI == 'false') {
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console.log('Not running on a Raspberry Pi.');
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} else {
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console.log('Problem with ENV file.');
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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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@ -15,63 +23,90 @@ const functions = {
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},
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// Turns the auger on (Pin 7 high)
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on() {
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gpio.write(7, true, function(err) {
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if (err) throw err;
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if (process.env.DEBUG == "true") console.log('Auger turned on.');
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return new Promise((resolve) => {
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if (process.env.ONPI == 'true') {
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gpio.write(7, true, function(err) {
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if (err) throw err;
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if (process.env.DEBUG == "true") console.log('Auger turned on.');
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});
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} else {
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console.log('Auger turned on.');
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resolve('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() {
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gpio.write(7, false, function(err) {
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if (err) throw err;
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if (process.env.DEBUG == "true") console.log('Auger turned off.');
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return new Promise((resolve) => {
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if (process.env.ONPI == 'true') {
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gpio.write(7, false, function(err) {
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if (err) throw err;
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if (process.env.DEBUG == "true") console.log('Auger turned off.');
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});
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} else {
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console.log('Auger turned off.');
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resolve('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() {
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this.on();
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functions.sleep(process.env.ONTIME);
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this.off();
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functions.sleep(process.env.OFFTIME);
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return;
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return new Promise((resolve) => {
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this.on().then(() => {
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functions.sleep(process.env.ONTIME).then(() => {
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this.off().then(() => {
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functions.sleep(process.env.OFFTIME).then(() => {
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resolve("Cycle complete.");
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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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files: {
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async check() {
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// TODO this code needs to be finished from migration
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// Check for pause file existing, then sleep for preset time, then run the function again.
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if (fs.existsSync('./pause')) {
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return "pause";
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}
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check() {
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return new Promise((resolve, reject) => {
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// TODO this code needs to be finished from migration
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// Check for pause file existing, then sleep for preset time, then run the function again.
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if (fs.existsSync('./pause')) {
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resolve("pause");
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}
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// Check for reload file existing, then reload environment variables, then delete the file.
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if (fs.existsSync('./reload')) {
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return "reload";
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}
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// Check for reload file existing, then reload environment variables, then delete the file.
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if (fs.existsSync('./reload')) {
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resolve("reload");
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}
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// Check for quit file existing, then delete it, then quit the program
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if (fs.existsSync('./quit')) {
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return "quit";
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}
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return "none";
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// Check for quit file existing, then delete it, then quit the program
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if (fs.existsSync('./quit')) {
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resolve("quit");
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}
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resolve("none");
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});
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},
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},
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commands: {
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pause() {
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console.log('Paused...');
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this.sleep(process.env.PAUSETIME).then(() => { return; });
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return;
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},
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reload() {
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dotenv.config({ override: true })
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fs.unlink('./reload', (err) => {
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if (err) throw err;
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console.log('Deleted reload file.');
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return new Promise((resolve) => {
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functions.sleep(process.env.PAUSETIME).then(() => { resolve(); });
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});
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console.log('Reloaded environment variables.');
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console.log(`ONTIME=${process.env.ONTIME}\nOFFTIME=${process.env.OFFTIME}\nPAUSETIME=${process.env.PAUSETIME}\nDEBUG=${process.env.DEBUG}`);
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return;
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},
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reload(envs) {
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return new Promise((resolve) => {
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const dotenv = require('dotenv').config({ override: true });
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fs.unlink('./reload', (err) => {
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if (err) throw err;
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console.log('Deleted reload file.');
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});
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console.log('Reloaded environment variables.');
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console.log(`ONTIME=${process.env.ONTIME}\nOFFTIME=${process.env.OFFTIME}\nPAUSETIME=${process.env.PAUSETIME}\nDEBUG=${process.env.DEBUG}\nONPI=${process.env.ONPI}`);
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resolve();
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});
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},
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quit() {
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fs.unlink('./quit', (err) => {
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@ -85,19 +120,26 @@ const functions = {
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// Sleeps for any given milliseconds, call with await
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sleep(ms) {
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return new Promise((resolve) => {
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setTimeout(resolve, ms);
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if (process.env.DEBUG == "true") console.log(`Slept for ${ms}ms`);
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if (process.env.DEBUG == "true") console.log(`Sleeping for ${ms}ms`);
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const finish = () => {
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if (process.env.DEBUG == "true") console.log(`Slept for ${ms}ms`);
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resolve();
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}
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setTimeout(finish, ms);
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});
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},
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init() {
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// Write the current env vars to console
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console.log('Environment variables:');
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console.log(`ONTIME=${process.env.ONTIME}\nOFFTIME=${process.env.OFFTIME}\nPAUSETIME=${process.env.PAUSETIME}\nDEBUG=${process.env.DEBUG}`);
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console.log(`ONTIME=${process.env.ONTIME}\nOFFTIME=${process.env.OFFTIME}\nPAUSETIME=${process.env.PAUSETIME}\nDEBUG=${process.env.DEBUG}\nONPI=${process.env.ONPI}`);
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return true;
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},
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}
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// Set up GPIO 4 (pysical pin 7) as output, then call functions.auger.ready()
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gpio.setup(7, gpio.DIR_OUT, functions.auger.ready());
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if (process.env.ONPI == 'true') {
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gpio.setup(7, gpio.DIR_OUT, functions.auger.ready());
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}
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module.exports = { functions }
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module.exports = { functions };
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50
main.js
50
main.js
@ -1,32 +1,40 @@
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// Custom functions module to keep main script clean
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const fn = require('./functions').functions;
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const fn = require('./functions.js').functions;
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// Environment Variables Importing
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const dotenv = require('dotenv').config();
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// TODO Add logic for other sensors
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while (true) {
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main();
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}
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main(fn);
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// Main function, turns the auger on, sleeps for the time given in environment variables, then turns the auger off, sleeps, repeats.
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async function main() {
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switch (fn.files.check()) {
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case "pause":
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fn.commands.pause();
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async function main(fn) {
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fn.files.check().then((res,rej) => {
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console.log('File Check: ' + res);
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switch (res) {
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case "pause":
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fn.commands.pause().then(() => {
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main(fn);
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});
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break;
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case "reload":
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fn.commands.reload().then(() => {
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main(fn);
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});
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break;
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case "quit":
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fn.commands.quit();
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break;
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case "none":
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fn.auger.cycle().then(() => {
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main(fn);
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});
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break;
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default:
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main(fn);
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break;
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case "reload":
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fn.commands.reload();
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break;
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case "quit":
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fn.commands.quit();
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break;
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case "none":
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fn.auger.cycle();
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break;
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default:
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break;
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}
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}
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});
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}
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