uci-i2c-bus/examples/client.js

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/*
* A tcp customer/client to talk with the i2c bus manipulate an i2c device
*
*/
const DEVICE = (process.env.BUS_DEVICE || 'scan')
const TRANSPORT = (process.env.TRANSPORT || 'tcp')
import Base from '@uci/base'
const HOST = (process.env.BUS_HOST || 'sbc')
const PORT = (process.env.BUS_PORT || 1776)
const ADDRESS = 39
let options = {id:'i2c-client', useRootNS:true}
;
(async () => {
// import not supported by eslint, but esm does so ignore parsing error
let {test,reply,error} = await import(`./${DEVICE}`)
let client = new Base(options)
if (TRANSPORT==='tcp') client.addSocket('tcp','c','t',{host:HOST, port:1776})
else client.addSocket('np','c','n',{path:'i2c-bus'})
client.reply = reply // add reply processor
client.error = error
client.on('pushed', packet => {
if (packet.error) {
console.log('=======pushed error received=======\n', packet.error)
console.log('==================')
}
})
await client.init()
await test.call(client,ADDRESS)
process.kill(process.pid, 'SIGTERM')
})().catch(err => {
console.error('FATAL: UNABLE TO START SYSTEM!\n',err)
})