59 lines
1.2 KiB
JavaScript
59 lines
1.2 KiB
JavaScript
const bleno = require('bleno')
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const config = require('./config.json')
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const adapterName = 'BLE_Printer'
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const serverUUID = config.uuid.main
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const localEvent = require('./localEvent')
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const fs = require('fs')
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const MainService = require('./main-service')
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const printer = require('./PrinterDev')
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async function initSystem(){
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try{
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await printer.connect()
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}catch(err){
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throw err
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}
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}
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initSystem()
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bleno.on('stateChange', state => {
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console.log(`bt device state ${state}`)
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if (state == 'poweredOn') {
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bleno.startAdvertising(adapterName, [serverUUID], (error) => {
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})
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} else {
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bleno.stopAdvertising()
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}
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})
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bleno.on('advertisingStart', function (error) {
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console.log('on -> advertisingStart: ' + (error ? 'error ' + error : 'success'));
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if (!error) {
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bleno.setServices([new MainService()], error => {
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console.log('set service', error)
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})
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}
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})
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localEvent.on('print', async (str) => {
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let status = false
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if (printer.isOpen) {
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try {
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status = await printer.printerString(str)
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} catch (err) {
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status = false
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}
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}
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localEvent.emit('printResult', status)
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})
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process.on('SIGINT', () => {
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printer.close()
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process.exit(0)
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}) |