added custom pullup command line option with RPI as default
parent
d8172b092b
commit
19ea1f88ff
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@ -1,6 +1,7 @@
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"use strict";
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const fs = require('mz/fs'),
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exec = require('mz/child_process').exec,
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EventEmitter = require('events'),
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Epoll = require('epoll').Epoll,
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_ = require('uci-utils')
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@ -18,8 +19,10 @@ class Interrupt extends EventEmitter {
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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
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this.delay = opts.delay
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this.edge = opts.edge // default 'falling'
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this.delay = opts.delay // default = 50
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this.pullup = opts.pullup ? opts.pullup : (num, state) => { return `raspi-gpio set ${num} ${state}` } // default rpi using raspi-gpio
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// this.pullup = (num, state) => { return `raspi-gpio set ${num} ${state}` }
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this.dbt = opts.debounce ? opts.debounce : 300
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this.poller = new Epoll(
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debounce((err, fd, events) => {
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@ -31,11 +34,12 @@ class Interrupt extends EventEmitter {
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init() {
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process.on('SIGINT', () => {
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this.exit().then(() => console.log('\nunexported and closed')) // unexport on cntrl-c
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this.exit().then((resp) => console.log("\n", resp)) // unexport on cntrl-c
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})
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return _.pSeries([
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this.exit(),
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this._pull(this.num),
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this._export(this.num),
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this._direction('in', this.delay),
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() => this._edge(this.edge),
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@ -48,9 +52,9 @@ class Interrupt extends EventEmitter {
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}
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_test(num) {
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return Promise.resolve(num)
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}
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// _test(num) {
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// return Promise.resolve(num)
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// }
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fire(name = 'fired') {
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this.emit(name, this.hook)
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@ -62,21 +66,25 @@ class Interrupt extends EventEmitter {
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}
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exit() {
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return pathExists(this.path)
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.then((exists) => {
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// console.log('exists', exists)
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if (exists) {
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return fs.writeFile(GPIO_ROOT_PATH + 'unexport', this.num)
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.then(() => {
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if (this.valuefd) {
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this.stop()
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return fs.close(this.valuefd)
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}
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return Promise.resolve('unexported - exited')
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})
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}
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return Promise.resolve('already unexported')
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})
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return new Promise((resolve, reject) => {
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pathExists(this.path)
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.then((exists) => {
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if (exists) {
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fs.writeFile(GPIO_ROOT_PATH + 'unexport', this.num)
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.then(() => {
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if (this.valuefd) {
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this.stop()
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fs.close(this.valuefd)
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}
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this._pull(this.num, 'pn')
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})
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.then(resolve('unexported and exited'))
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} else {
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resolve('already unexported')
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}
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})
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.catch(err => resolve(err))
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})
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}
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start() {
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@ -87,6 +95,15 @@ class Interrupt extends EventEmitter {
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this.poller.remove(this.valuefd).close();
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}
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/**************/
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_pull(num, state = 'pu') {
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if (this.pullup === 'external') { return Promise.resolve('pull must be set externally') } else {
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return exec(this.pullup(num, state))
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.then(() => { return Promise.resolve('pull set') })
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}
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}
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_fd() {
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return fs.open(this.path + 'value', 'r+')
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.then(fd => {
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@ -9,7 +9,11 @@ const Interrupt = require('../').Interrupt
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let date = new Date(Date.now())
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console.log(date.getMinutes(), "\:", date.getSeconds())
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let inter17 = new Interrupt(17, { hook: 'a hook to something to do' })
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let inter17 = new Interrupt(17, {
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hook: 'a hook to something to do'
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// pullup: (num, state) => { return `someccommand using num and state` } // if rpi then specify a function that returns a command line line pullup tool using num and state
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// pullup: 'external' // pullup not set with a command line utility - use alternative method such as device tree overlays
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})
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// inter17.on('fired', hook => {
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// console.log('Listener fired and returned:', hook)
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@ -21,9 +25,9 @@ inter17.init()
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console.log('initialzed, waiting for interrupt to fire')
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})
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.catch(err => console.log("returned error:", err))
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//
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// inter17.on('fired', hook => { counter(hook) })
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.catch(err => console.log("returned error:\n", err))
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inter17.on('fired', hook => { counter(hook) })
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let count = 0
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@ -32,5 +36,4 @@ function counter(hook) {
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console.log(`******${count}********`)
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console.log(hook)
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console.log(`----------------------`)
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}
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