openrowingmonitor/app/ble/FtmsPeripheral.js

122 lines
3.4 KiB
JavaScript

'use strict'
/*
Open Rowing Monitor, https://github.com/laberning/openrowingmonitor
Creates a Bluetooth Low Energy (BLE) Peripheral with all the Services that are required for
a Fitness Machine Device
Relevant parts from https://www.bluetooth.com/specifications/specs/fitness-machine-profile-1-0/
The Fitness Machine shall instantiate one and only one Fitness Machine Service as Primary Service
The User Data Service, if supported, shall be instantiated as a Primary Service.
The Fitness Machine may instantiate the Device Information Service
(Manufacturer Name String, Model Number String)
*/
import bleno from '@abandonware/bleno'
import FitnessMachineService from './ftms/FitnessMachineService.js'
// import DeviceInformationService from './ftms/DeviceInformationService.js'
import config from '../tools/ConfigManager.js'
import log from 'loglevel'
function createFtmsPeripheral (controlCallback, options) {
const peripheralName = options?.simulateIndoorBike ? config.ftmsBikePeripheralName : config.ftmsRowerPeripheralName
const fitnessMachineService = new FitnessMachineService(options, controlPointCallback)
// const deviceInformationService = new DeviceInformationService()
bleno.on('stateChange', (state) => {
triggerAdvertising(state)
})
bleno.on('advertisingStart', (error) => {
if (!error) {
bleno.setServices(
// [fitnessMachineService, deviceInformationService],
[fitnessMachineService],
(error) => {
if (error) log.error(error)
})
}
})
bleno.on('accept', (clientAddress) => {
log.debug(`ble central connected: ${clientAddress}`)
bleno.updateRssi()
})
bleno.on('disconnect', (clientAddress) => {
log.debug(`ble central disconnected: ${clientAddress}`)
})
bleno.on('platform', (event) => {
log.debug('platform', event)
})
bleno.on('addressChange', (event) => {
log.debug('addressChange', event)
})
bleno.on('mtuChange', (event) => {
log.debug('mtuChange', event)
})
bleno.on('advertisingStartError', (event) => {
log.debug('advertisingStartError', event)
})
bleno.on('servicesSetError', (event) => {
log.debug('servicesSetError', event)
})
bleno.on('rssiUpdate', (event) => {
log.debug('rssiUpdate', event)
})
function controlPointCallback (event) {
const obj = {
req: event,
res: {}
}
if (controlCallback) controlCallback(obj)
return obj.res
}
function destroy () {
return new Promise((resolve) => {
bleno.disconnect()
bleno.removeAllListeners()
bleno.stopAdvertising(resolve)
})
}
function triggerAdvertising (eventState) {
const activeState = eventState || bleno.state
if (activeState === 'poweredOn') {
bleno.startAdvertising(
peripheralName,
// [fitnessMachineService.uuid, deviceInformationService.uuid],
[fitnessMachineService.uuid],
(error) => {
if (error) log.error(error)
}
)
} else {
bleno.stopAdvertising()
}
}
// present current rowing metrics to FTMS central
function notifyData (type, data) {
if (type === 'strokeFinished' || type === 'metricsUpdate') {
fitnessMachineService.notifyData(data)
}
}
// present current rowing status to FTMS central
function notifyStatus (status) {
fitnessMachineService.notifyStatus(status)
}
return {
triggerAdvertising,
notifyData,
notifyStatus,
destroy
}
}
export { createFtmsPeripheral }