Move to new ant-plus library

Move to a new, still maintained, ant-plus library that solves the
connection dropout issue experienced with the original when using HRM as
well as that provides a cleaner interface to manage the ANT device.

app/peripherals/ant/AntManager.js

@@ -10,42 +10,27 @@
   - Garmin mini ANT+ (ID 0x1009)
 */
 import log from 'loglevel'
-import Ant from 'ant-plus'
+import { AntDevice } from 'incyclist-ant-plus/lib/bindings/index.js'
 
 export default class AntManager {
   _isStickOpen = false
+  _stick = new AntDevice({ startupTimeout: 2000 })
 
-  constructor () {
+  async openAntStick () {
-  // it seems that we have to use two separate heart rate sensors to support both old and new
+    if (this._isStickOpen) return
-  // ant sticks, since the library requires them to be bound before open is called
+    if (!(await this._stick.open())) { throw (new Error('Error opening Ant Stick')) }
-    this._stick = new Ant.GarminStick3() // 0fcf:1009
+
-    if (!this._stick.is_present()) {
+    log.info('ANT+ stick found')
-      this._stick = new Ant.GarminStick2() // 0fcf:1008
+    this._isStickOpen = true
-    }
   }
 
-  openAntStick () {
+  async closeAntStick () {
-    return new Promise((resolve, reject) => {
+    if (!this._isStickOpen) return
-      if (!this._stick.open()) {
-        reject(new Error('Error opening Ant Stick'))
-      }
-      this._stick.once('startup', () => {
-        log.info('ANT+ stick found')
-        this._isStickOpen = true
-        resolve(this._stick)
-      })
-    })
-  }
 
-  closeAntStick () {
+    if (!(await this._stick.close())) { throw (new Error('Error closing Ant Stick')) }
-    return new Promise(resolve => {
+
-      this._stick.once('shutdown', () => {
+    log.info('ANT+ stick is closed')
-        log.info('ANT+ stick is closed')
+    this._isStickOpen = false
-        this._isStickOpen = false
-        resolve()
-      })
-      this._stick.close()
-    })
   }
 
   isStickOpen () {

app/peripherals/ant/HrmPeripheral.js

@@ -6,35 +6,33 @@
   a Cycling Speed and Cadence Profile
 */
 import EventEmitter from 'node:events'
-import Ant from 'ant-plus'
+import log from 'loglevel'
+import { HeartRateSensor } from 'incyclist-ant-plus'
 
 function createAntHrmPeripheral (antManager) {
   const emitter = new EventEmitter()
   const antStick = antManager.getAntStick()
+  const heartRateSensor = new HeartRateSensor(0)
 
-  const heartRateSensor = new Ant.HeartRateSensor(antStick)
+  async function attach () {
+    if (!antManager.isStickOpen()) { await antManager.openAntStick() }
+    this.channel = await antStick.getChannel()
 
-  heartRateSensor.on('hbData', (data) => {
+    this.channel.on('data', (profile, deviceID, data) => {
-    emitter.emit('heartRateMeasurement', { heartrate: data.ComputedHeartRate, batteryLevel: data.BatteryLevel })
+      emitter.emit('heartRateMeasurement', { heartrate: data.ComputedHeartRate, batteryLevel: data.BatteryLevel })
-  })
-
-  function attach () {
-    return new Promise(resolve => {
-      heartRateSensor.once('attached', () => {
-        resolve()
-      })
-      heartRateSensor.attach(0, 0)
     })
+
+    if (!(await this.channel.startSensor(heartRateSensor))) {
+      log.error('Could not start ANT+ heart rate sensor')
+    }
   }
 
-  function destroy () {
+  async function destroy () {
-    return new Promise((resolve) => {
+    if (!this.channel) {
-      heartRateSensor.once('detached', () => {
+      log.debug('Ant Sensor does not seem to be running')
-        heartRateSensor.removeAllListeners()
+      return
-        resolve()
+    }
-      })
+    await this.channel.stopSensor(heartRateSensor)
-      heartRateSensor.detach()
-    })
   }
 
   return Object.assign(emitter, {

package.json

@@ -33,9 +33,9 @@
   "dependencies": {
     "@abandonware/bleno": "0.5.1-4",
     "@abandonware/noble": "1.9.2-15",
-    "ant-plus": "0.1.24",
     "finalhandler": "1.1.2",
     "form-data": "4.0.0",
+    "incyclist-ant-plus": "^0.1.15",
     "lit": "2.1.3",
     "loglevel": "1.8.0",
     "nosleep.js": "0.12.0",