From 4e844b0722b4a7d9337a4fc64fe5cb32a3e5f904 Mon Sep 17 00:00:00 2001
From: Lars Berning <151194+laberning@users.noreply.github.com>
Date: Mon, 3 May 2021 10:05:07 +0200
Subject: [PATCH] makes low level integrations less dependent on raspberry pi
 hardware

---
 app/ble/FtmsPeripheral.js    | 10 ++++++----
 app/gpio/GpioTimerService.js | 35 ++++++++++++++++++++---------------
 2 files changed, 26 insertions(+), 19 deletions(-)

diff --git a/app/ble/FtmsPeripheral.js b/app/ble/FtmsPeripheral.js
index bb6100c..926b870 100644
--- a/app/ble/FtmsPeripheral.js
+++ b/app/ble/FtmsPeripheral.js
@@ -13,14 +13,14 @@
 */
 import bleno from '@abandonware/bleno'
 import FitnessMachineService from './ftms/FitnessMachineService.js'
-import DeviceInformationService from './ftms/DeviceInformationService.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()
+  // const deviceInformationService = new DeviceInformationService()
 
   bleno.on('stateChange', (state) => {
     triggerAdvertising(state)
@@ -29,7 +29,8 @@ function createFtmsPeripheral (controlCallback, options) {
   bleno.on('advertisingStart', (error) => {
     if (!error) {
       bleno.setServices(
-        [fitnessMachineService, deviceInformationService],
+        // [fitnessMachineService, deviceInformationService],
+        [fitnessMachineService],
         (error) => {
           if (error) log.error(error)
         })
@@ -86,7 +87,8 @@ function createFtmsPeripheral (controlCallback, options) {
     if (activeState === 'poweredOn') {
       bleno.startAdvertising(
         peripheralName,
-        [fitnessMachineService.uuid, deviceInformationService.uuid],
+        // [fitnessMachineService.uuid, deviceInformationService.uuid],
+        [fitnessMachineService.uuid],
         (error) => {
           if (error) log.error(error)
         }
diff --git a/app/gpio/GpioTimerService.js b/app/gpio/GpioTimerService.js
index 15827aa..1e1a5b5 100644
--- a/app/gpio/GpioTimerService.js
+++ b/app/gpio/GpioTimerService.js
@@ -23,22 +23,27 @@ export function createGpioTimerService () {
   } catch (err) {
     log.debug('need root permission to set priority of Gpio-Thread')
   }
-  // mode can be rising, falling, both
-  const reedSensor = new Gpio(17, 'in', 'rising')
-  // use hrtime for time measurement to get a higher time precision
-  let hrStartTime = process.hrtime()
 
-  // assumes that GPIO-Port 17 is set to pullup and reed is connected to GND
-  // therefore the value is 1 if the reed sensor is open
-  reedSensor.watch((err, value) => {
-    if (err) {
-      throw err
-    }
-    const hrDelta = process.hrtime(hrStartTime)
-    hrStartTime = process.hrtime()
-    const delta = hrDelta[0] + hrDelta[1] / 1e9
-    process.send(delta)
-  })
+  if (Gpio.accessible) {
+    // mode can be rising, falling, both
+    const reedSensor = new Gpio(17, 'in', 'rising')
+    // use hrtime for time measurement to get a higher time precision
+    let hrStartTime = process.hrtime()
+
+    // assumes that GPIO-Port 17 is set to pullup and reed is connected to GND
+    // therefore the value is 1 if the reed sensor is open
+    reedSensor.watch((err, value) => {
+      if (err) {
+        throw err
+      }
+      const hrDelta = process.hrtime(hrStartTime)
+      hrStartTime = process.hrtime()
+      const delta = hrDelta[0] + hrDelta[1] / 1e9
+      process.send(delta)
+    })
+  } else {
+    log.info('reading from Gpio is not (yet) supported on this platform')
+  }
 }
 
 createGpioTimerService()