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uci-interrupt
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0.2.12 refactored hook registration

master
David Kebler 2019-03-08 09:05:18 -08:00
parent be68921eac
commit c0964d1f1d
2 changed files with 37 additions and 43 deletions
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2
package.json
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@ -1,7 +1,7 @@
{
"name": "@uci/interrupt",
"main": "src",
"version": "0.2.11",
"version": "0.2.12",
"description": "a class for adding interrupt processesing for gpio pins on Raspberry Pi and Similar SBCs",
"scripts": {
"single": "sudo node -r esm examples/single",

78
src/interrupt.js
View File

@ -55,7 +55,7 @@ class Interrupt extends Base {
this.edge = opts.edge
this.pull = opts.pull
this.pin = {} //set at init
this._hook = opts.hook
this.hook = opts.hook
this.packet = opts.packet || {}
this.packet.pin = pin
this.packet.cmd = this.packet.cmd || opts.pushCmd || 'interrupt'
@ -68,7 +68,7 @@ class Interrupt extends Base {
// create the pigio pin_num
// TODO check for rpi and pigpio, if not available use onoff
// wrap all needed commands so can call module for pigpio or onoff
if (this.mock) bus = await import('pigpio-mock')
if (process.env.UCI_MOCK==='true') bus = await import('pigpio-mock')
else bus = await import('pigpio')
this.pin = new bus.Gpio(this.pin_num, {
mode: bus.Gpio.INPUT,
@ -84,33 +84,22 @@ class Interrupt extends Base {
let cb = () => {}
if (this.wait === 0) {
cb = this._interruptProcess.bind(this, this.packet)
console.log(`starting interrupt on pin ${this.pin_num} without debounce`)
log.info(
{ packet: this.packet },
`starting interrupt on pin ${this.pin_num} without debounce`
)
log.info({ packet: this.packet },`starting interrupt on pin ${this.pin_num} without debounce`)
} else {
cb = debounce(
this._interruptProcess.bind(this, this.packet),
this.wait,
this.dbopts
)
console.log(
`starting interrupt on pin ${this.pin_num} with debounce wait:${
this.wait
} options:${JSON.stringify(this.dbopts)}`
)
log.info(
{ packet: this.packet, wait: this.wait, options: this.dbopts },
`starting interrupt on pin ${this.pin_num} with debounce wait:${
this.wait
}`
)
log.info({ packet: this.packet, wait: this.wait, options: this.dbopts },`starting interrupt on pin ${this.pin_num} with debounce wait:${this.wait}`)
}
this.pin.on('interrupt', cb)
// rock n roll!!, start the pigpio interrupt
if (!this.mock) this.pin.enableInterrupt(this.edge || bus.Gpio.RISING_EDGE)
}
this.registerHook(defaultHook)
} // end init
// manual firing for testing
async fire() {
@ -124,37 +113,42 @@ class Interrupt extends Base {
return Promise.reject('keyboard termination...terminating interrupts')
}
// default processor
// use hook to do more processing
async _interruptProcess(packet) {
packet.count += 1
packet.time = new Date().getTime()
if (this._hook) packet = await this.hook(packet)
packet.id = this.id
if (this.hook) packet = await this._hookFunc.call(this,packet)
log.info({ packet: packet }, 'packet pushing to all clients')
this.push(packet)
}
//sample hook
async hook(packet) {
// return a promise if anything async happens in hook
// new Promise((resolve) => {
console.log('=======================')
console.log(`pin ${packet.pin} on sbc gpio bus has thrown an interrupt`)
console.log(`pushing to all connected socket client with cmd:${packet.cmd}`)
console.dir(packet)
console.log(
'This hook allow you to modify the packet being pushed to connected clients'
)
console.log(
'add .hook method for your instance or extended class to overwrite this'
)
console.log(
'Must be promise returning if anything async happens in your hook'
)
console.log('=======================')
return packet
// resolve(packet)
// })
registerHook(func) {
this._hookFunc = func
}
} // end Class
export default Interrupt
//default hook
async function defaultHook(packet) {
// return a promise or use await if anything async happens in hook
// new Promise((resolve) => {
console.log('==========default hook =============')
console.log(`pin ${packet.pin} on sbc gpio bus has thrown an interrupt`)
console.log(`pushing to all connected socket client with cmd:${packet.cmd}`)
console.dir('packet)
console.log('replace by a new function with .registerHook(function) to overwrite this')
console.log('Must be async/promise returning if anything async happens in your hook')
console.log('This hook allow you to modify/add to the packet being pushed to connected clients')
console.log('the function will be bound to the instance for complete access')
console.log('if you pass a hash for .hook you can use it here as this.hook')
console.log('the hook options contains', this.hook)
console.log('by default the instance id will be attached to the packet before this')
return packet
// resolve(packet)
// })
}