add try catch to init
David Kebler
parent
9b1173f007
commit
66034b09cb
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@ -1,32 +1,79 @@
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'use strict'
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"use strict";
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const Gpio = require('onoff').Gpio
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const fs = require('fs'),
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EventEmitter = require('events'),
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Epoll = require('epoll').Epoll
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// **********************************
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const GPIO_ROOT_PATH = '/sys/class/gpio/'
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class Interrupt {
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class Interrupt extends EventEmitter {
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// bus is i2c-bus bus object
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constructor(pin_number, processor, opts = {}) {
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let dtimeout = opts.debounceTimeout ? opts.debounceTimeout : 200
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this.pin = new Gpio(pin_number, 'in', 'falling', { debounceTimeout: dtimeout })
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this.processor = processor
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constructor(pin_number, opts = {}) {
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super()
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this.num = pin_number;
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this.hook = opts.hook // will be passed back with the emit
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this.path = GPIO_ROOT_PATH + 'gpio' + this.num + '/'
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this.edge = opts.edge ? opts.edge : 'falling'
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this.debounce = opts.debounce ? opts.debounce : 200
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this.poller = new Epoll(function (err, fd, events) {
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if (err) { this.emit('error', err) }
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this.clear()
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this.emit('fired', this.hook)
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}.bind(this))
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}
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init() {
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this.addListener(this.processor)
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process.on('SIGINT', function () {
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this.pin.unexport();
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})
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try {
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if (fs.existsSync(this.path)) { this.exit() }
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fs.writeFileSync(GPIO_ROOT_PATH + 'export', this.gpio);
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fs.writeFileSync(this.path + 'direction', 'in');
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fs.writeFileSync(this.path + 'edge', this.edge);
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this.valueFd = fs.openSync(this.path + 'value', 'r+'); // Cache fd for performance.
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this.clear();
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this.start()
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process.on('SIGINT', function () {
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console.log('\ncleaning up interrupt before exiting')
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this.exit();
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})
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} catch (err) { return Promise.reject(err) }
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return Promise.resolve('interrupt ready')
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}
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addListener(processor) {
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this.pin.watch((err, value) => {
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if (err) { return Promise.reject(err) }
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return processor
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});
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fire(name = 'fired') {
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this.emit(name, this.hook)
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}
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clear() {
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fs.readSync(this.valuefd, null, 0, 1, 0);
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}
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exit() {
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if (this.valuefd) {
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this.stop()
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fs.closeSync(this.valueFd)
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}
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try {
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fs.writeFileSync(GPIO_ROOT_PATH + 'unexport', this.gpio);
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} catch (ignore) {}
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}
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start() {
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this.poller.add(this.valuefd, Epoll.EPOLLPRI);
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}
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stop() {
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this.poller.remove(this.valuefd).close();
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}
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}
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module.exports.Interrupt = Interrupt
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module.exports = {
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Interrupt
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}
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77
package.json
77
package.json
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@ -1,38 +1,43 @@
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{
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"name": "uci-interrupt",
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"version": "0.0.1",
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"description": "a class for adding interrupt processesing via sysfs and gpio pins on Raspberry and similar",
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"main": "index.js",
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"scripts": {
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"testw": "./node_modules/.bin/mocha --reporter list --recursive --watch",
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"test": "istanbul cover ./node_modules/.bin/_mocha test/ --report lcovonly -- -R spec --recursive && codecov || true"
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},
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"author": "David Kebler",
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"license": "MIT",
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"repository": {
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"type": "git",
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"url": "git+https://github.com/uCOMmandIt/uci-interrrupt.git"
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},
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"keywords": [
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"node.js",
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"communication",
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"serial",
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"utilities",
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"helpers"
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],
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"bugs": {
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"url": "https://github.com/uCOMmandIt/uci-interrrupt/issues"
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},
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"homepage": "https://github.com/uCOMmandIt/uci-interrrupt#readme",
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"dependencies": {
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"onoff": "^1.1.1",
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"require-all": "git+https://github.com/dkebler/node-require-all.git#merge"
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},
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"devDependencies": {
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"chai": "^3.5.0",
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"chai-as-promised": "^6.0.0",
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"codecov": "^1.0.1",
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"istanbul": "^0.4.5",
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"mocha": "^3.2.0"
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}
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"name": "uci-interrupt",
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"version": "0.0.1",
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"description": "a class for adding interrupt processesing via sysfs and gpio pins on Raspberry and similar",
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"main": "index.js",
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"watch": {
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"testw": "{lib,test}/*.js"
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},
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"scripts": {
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"testw": "./node_modules/.bin/mocha --reporter list --recursive ",
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"test": "istanbul cover ./node_modules/.bin/_mocha test/ --report lcovonly -- -R spec --recursive && codecov || true",
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"watch": "./node_modules/.bin/npm-watch"
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},
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"author": "David Kebler",
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"license": "MIT",
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"repository": {
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"type": "git",
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"url": "git+https://github.com/uCOMmandIt/uci-interrrupt.git"
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},
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"keywords": [
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"node.js",
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"communication",
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"serial",
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"utilities",
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"helpers"
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],
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"bugs": {
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"url": "https://github.com/uCOMmandIt/uci-interrrupt/issues"
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},
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"homepage": "https://github.com/uCOMmandIt/uci-interrrupt#readme",
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"dependencies": {
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"onoff": "^1.1.1",
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"require-all": "git+https://github.com/dkebler/node-require-all.git#merge"
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},
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"devDependencies": {
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"chai": "^3.5.0",
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"chai-as-promised": "^6.0.0",
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"codecov": "^1.0.1",
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"istanbul": "^0.4.5",
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"mocha": "^3.2.0",
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"npm-watch": "^0.1.7"
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}
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}
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@ -1,17 +1,35 @@
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'use strict'
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const expect = require('chai').expect,
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lib = require('../')
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Interrupt = require('../').Interrupt
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//time-stamp for use when watching to distinguish reruns in console
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// place in alpha first file only
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let date = new Date(Date.now())
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console.log(date.getMinutes(), "\:", date.getSeconds())
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describe('Test a template module ', function () {
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let inter17 = new Interrupt(17, { hook: 'a hook to something to do' })
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it('Should test all methods', function () {
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expect(lib.hello('Forest Gump')).to.equal('Hello Forest Gump')
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})
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// console.log('inter17', inter17)
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inter17.on('fired', hook => {
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console.log('Listener fired and returned:', hook)
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})
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inter17.init()
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.then((resp) => {
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console.log('return from init()', resp)
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setInterval(function () {
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inter17.fire()
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}, 1000)
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})
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.catch(err => console.log("error:", err))
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// describe('Interrupt Class', function () {
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//
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// it('can be manually fired', function () {
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// expect(hello('Forest Gump')).to.equal()
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// })
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//
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// })
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// })
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