ble-server/ble/main-service.js

const bleno = require('bleno')
const config = require('../config.json')
const localEvent = require('../localEvent')

const GdataCharacteristic = require('./gdata-characteristic')
const dataCharacteristic = new GdataCharacteristic()

class MainService extends bleno.PrimaryService {
  constructor () {
    super({
      uuid: config.ble.uuid.service,
      characteristics: [
        dataCharacteristic
      ]
    })
  }
}

localEvent.on('printResult', async state => {
  let str = state ? 'ok' : 'fail'
  dataCharacteristic.sendNotidy(str)
})

module.exports = MainService