56 lines
2.3 KiB
JavaScript
56 lines
2.3 KiB
JavaScript
import Base from '@uci/base'
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// import Base from '../../uci-base/src/base'
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import commands from './bus-device-commands'
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// import logger from '../../uci-logger/src/logger'
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import logger from '@uci/logger'
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let log = {}
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const LOG_OPTS = (id) => {
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return {
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repo:'uci-i2c-device',
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npm:'@uci/i2c-device',
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file:'src/device-packet.mjs',
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class:'Device',
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id:id,
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instance_created:new Date().getTime()
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}}
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export default class Device extends Base {
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constructor(opts) {
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if (!opts.bus) opts.bus ={}
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opts.bus.name = opts.bus.name || 'bus' //optional bus socket name
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// either device process instance runs on same host (use named pipe) or not (the host of bus must be given)
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if (opts[opts.bus.name].host) opts[opts.bus.name].port = opts[opts.bus.name].port || 1776
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else opts[opts.bus.name].path = opts[opts.bus.name].path || (process.env.SOCKETS_DIR || __dirname) + '/i2c-bus.sock'
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opts.sockets = (opts.sockets ? (opts.sockets+',') : '') + opts.bus.name + '#c>' + ((opts[opts.bus.name].path) ? 'n' :'t')
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super(opts)
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console.log({opts:opts},'created i2c device with these options')
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log = logger.child(LOG_OPTS(this.id))
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if (!opts.address) log.fatal({opts:opts},'no i2c bus address supplied' )
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this.address = opts.address
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this._bus_name = opts.bus.name
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this._channel = opts.channel // if using TAC9546A channel number on which device is attached
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this.bus = this.bindFuncs(commands)
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}
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async init(){
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await super.init()
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let res = await this.bus.ack()
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let socket = this.socket[this._bus_name].opts
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let connection = socket.path || socket.host + ':' + socket.port
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if (!res.ack) throw `no device operational on bus '${socket.id}' (${connection}) at address ${this.address}=0x${this.address.toString(16)}`
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return res
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}
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async _setChannel() {
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// TODO convert to package - uci-mux
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// console.log('before set',this.address,this.id,this._channel, await this.socket.bus.send(getState)
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// if (this._channel) {
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// if (!await this.socket.bus.send(address) { return Promise.reject('Channel set but no mux on bus')}
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// return await this.socket.bus.send(set(this._channel)
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// }
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return Promise.resolve() // no channel for device either no mux or device is attached to mux bypass
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}
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} // end of MCP230XX Class
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