feat: add device status uplink decoder

.idea/gradle.xml

@@ -4,16 +4,15 @@
   <component name="GradleSettings">
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>
-        <option name="testRunner" value="GRADLE" />
-        <option name="distributionType" value="DEFAULT_WRAPPED" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
-        <option name="gradleJvm" value="jbr-17" />
+        <option name="gradleJvm" value="#GRADLE_LOCAL_JAVA_HOME" />
         <option name="modules">
           <set>
             <option value="$PROJECT_DIR$" />
             <option value="$PROJECT_DIR$/app" />
           </set>
         </option>
+        <option name="resolveExternalAnnotations" value="false" />
       </GradleProjectSettings>
     </option>
   </component>

app/build.gradle

@@ -64,4 +64,5 @@ dependencies {
     implementation group: 'commons-codec', name: 'commons-codec', version: '1.16.0'
 
     implementation "com.android.volley:volley:1.2.1"
+    implementation "androidx.datastore:datastore-preferences:1.0.0"
 }

app/src/main/java/com/logitech/vc/kirbytest/ConnectionManager.kt

@@ -18,6 +18,7 @@ import android.bluetooth.le.ScanCallback
 import android.bluetooth.le.ScanFilter
 import android.bluetooth.le.ScanResult
 import android.bluetooth.le.ScanSettings
+import android.bluetooth.le.ScanSettings.MATCH_NUM_ONE_ADVERTISEMENT
 import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
@@ -210,10 +211,9 @@ class ConnectionManager(val context: Context, bleAdapter: BluetoothAdapter)  {
 
     private val scanSettings = ScanSettings.Builder()
         .setScanMode(ScanSettings.SCAN_MODE_LOW_LATENCY)
+        .setNumOfMatches(ScanSettings.MATCH_NUM_ONE_ADVERTISEMENT)
         .build()
 
-    private val scanFilters = listOf( ScanFilter.Builder().setServiceUuid(ParcelUuid.fromString(BuildConfig.SERVICE_UUID)).build())
-
     private val bleScanner by lazy {
         bleAdapter.bluetoothLeScanner
     }
@@ -294,10 +294,6 @@ class ConnectionManager(val context: Context, bleAdapter: BluetoothAdapter)  {
     @SuppressLint("MissingPermission")
     val scanCallback = object : ScanCallback() {
         override fun onScanResult(callbackType: Int, result: ScanResult) {
-            Log.d(
-                "ScanCallback",
-                "Found BLE device with address ${result.device.address} (name: ${result.device.name}, rssi: ${result.rssi})"
-            )
             notifyListeners(result.device.address) { it.onScanResult(callbackType, result) }
         }
 
@@ -314,7 +310,8 @@ class ConnectionManager(val context: Context, bleAdapter: BluetoothAdapter)  {
     fun startScan() {
         if (!isScanning) {
             isScanning = true
-            bleScanner.startScan( null, scanSettings, scanCallback)
+            val filter = ScanFilter.Builder().setDeviceName("KIRBY").build()
+            bleScanner.startScan(listOf(filter), scanSettings, scanCallback)
         }
     }
 
@@ -353,6 +350,9 @@ class ConnectionManager(val context: Context, bleAdapter: BluetoothAdapter)  {
     }
 
     fun discoverServices(device: BluetoothDevice) {
+        if(operationQueue.any { it.device.address === device.address && it is DiscoverServicesRequest }) {
+            return
+        }
         enqueueOperation(DiscoverServicesRequest(device))
     }
 
@@ -377,6 +377,9 @@ class ConnectionManager(val context: Context, bleAdapter: BluetoothAdapter)  {
     }
 
     fun readRemoteRssi(device: BluetoothDevice) {
+        if(operationQueue.any { it.device.address === device.address && it is ReadRemoteRssi }) {
+            return
+        }
         enqueueOperation(ReadRemoteRssi(device))
     }
 

app/src/main/java/com/logitech/vc/kirbytest/Database.kt

@@ -204,7 +204,6 @@ object LoggerContract {
 
                                 files[deviceId] = file
 
-                                Log.i(tag, file.absolutePath)
                                 file.setReadable(true, false)
                                 file
                             }

app/src/main/java/com/logitech/vc/kirbytest/DecoderIaq.kt

@@ -1,12 +1,9 @@
 package com.logitech.vc.kirbytest
 
-import android.util.Log
 import com.google.gson.annotations.SerializedName
-import org.apache.commons.codec.DecoderException
-import org.apache.commons.codec.binary.Hex
-import kotlin.math.min
 import kotlin.math.roundToInt
 
+
 object DecoderIaq {
     private const val INVALID_CO2 = 16383
     private const val INVALID_VOC = 2047
@@ -17,18 +14,70 @@ object DecoderIaq {
     private const val INVALID_PM25 = 1023
     private const val INVALID_PM10 = 1023
 
-    private val supportedMessageTypes = listOf<Number>(0, 1)
+    private val supportedMessageTypes = listOf<Number>(0, 1, 5)
+
+    fun parseMeasurement(input: String): Uplink? {
 
-    fun parseMeasurement(input: String): Measurement? {
-        val measurement = Measurement()
         val inputBytes = hexStringToByteArray(input)
         val msgType = inputBytes[0].toInt() and 0xFF ushr 4
 
-        if(!supportedMessageTypes.contains(msgType)) {
+        if (!supportedMessageTypes.contains(msgType)) {
-            Log.i("Decoder", "Invalid message type: $msgType")
             return null
         }
 
+        if (msgType < 3) {
+            return parseIaq(msgType, inputBytes)
+        } else if (msgType == 5) {
+            return parseDeviceStatus(msgType, inputBytes)
+        }
+
+        return null
+    }
+
+    private fun parseDeviceStatus(msgType: Number, inputBytes: ByteArray): DeviceStatus {
+        val status = DeviceStatus(msgType = msgType)
+
+        val fwMajor = parseUnsignedIntFromBytes(inputBytes, 4, 8)
+        val fwMinor = parseUnsignedIntFromBytes(inputBytes, 12, 8)
+        val fwPatch = parseUnsignedIntFromBytes(inputBytes, 20, 8)
+        val fwTweak = parseUnsignedIntFromBytes(inputBytes, 28, 8)
+
+        status.firmware = "$fwMajor.$fwMinor.$fwPatch"
+        if(fwTweak > 0u) {
+            status.firmware += "-$fwTweak"
+        }
+
+        status.operationMode = parseUnsignedIntFromBytes(inputBytes, 36, 4).toInt()
+        val batteryVoltage =  parseUnsignedIntFromBytes(inputBytes, 40, 16).toInt()
+        if (batteryVoltage == 0) {
+           status.usbPowered = true
+        } else {
+            status.batteryVoltage = batteryVoltage / 1000f
+        }
+
+
+        if (inputBytes.size > 7) {
+            val errors =  inputBytes[7].toInt()
+            val errorCo2 = (errors shr 0) and 1
+            val errorVoc =  (errors shr 1) and 1
+            val errorPm =  (errors shr 2) and 1
+            val errorRadar = (errors shr 3) and 1
+            val errorTemp =  (errors shr 4) and 1
+
+            status.errorCo2 = errorCo2 == 1
+            status.errorVoc = errorVoc == 1
+            status.errorPm = errorPm == 1
+            status.errorRadar = errorRadar == 1
+            status.errorTemp = errorTemp == 1
+        }
+
+
+        return status
+    }
+
+
+    private fun parseIaq(msgType: Number, inputBytes: ByteArray): Measurement {
+        val measurement = Measurement()
         measurement.msgType = msgType
 
         val co2 = parseUnsignedInt(inputBytes, 0, 3) ushr 6 and INVALID_CO2
@@ -66,28 +115,16 @@ object DecoderIaq {
         return measurement
     }
 
-    private fun parseUnsignedInt(bytes: ByteArray, startIncl: Int, endExcl: Int): Int {
+
-        val section = bytes.copyOfRange(startIncl, min(bytes.size, endExcl))
+    interface Uplink {
-        var unsignedInt = 0
+        var deviceId: String?
-        for (i in section.indices) {
+        var msgType: Number?
-            unsignedInt = unsignedInt shl 8
-            unsignedInt = unsignedInt or (section[i].toInt() and 0xFF)
-        }
-        return unsignedInt
     }
 
-    private fun hexStringToByteArray(encoded: String): ByteArray {
+    data class Measurement(
-        return try {
-            Hex.decodeHex(encoded)
-        } catch (e: DecoderException) {
-            throw RuntimeException(e)
-        }
-    }
-
-    data class Measurement (
         @SerializedName("bleAddress")
-        var deviceId: String? = null,
+        override var deviceId: String? = null,
-        var msgType: Number? = null,
+        override var msgType: Number? = null,
         var co2: Number? = null,
         var voc: Number? = null,
         var humidity: Number? = null,
@@ -96,9 +133,7 @@ object DecoderIaq {
         var occupancy: Number? = null,
         var pm25: Number? = null,
         var pm10: Number? = null
-    ) {
+    ) : Uplink {
-
-
         override fun toString(): String {
             return "M{" +
                     "type=" + msgType +
@@ -112,6 +147,35 @@ object DecoderIaq {
                     ", occ=" + occupancy +
                     '}'
         }
+    }
 
+    data class DeviceStatus(
+        @SerializedName("bleAddress")
+        override var deviceId: String? = null,
+        override var msgType: Number? = null,
+        var firmware: String? = null,
+        var operationMode: Number? = null,
+        var batteryVoltage: Number? = null,
+        var usbPowered: Boolean = false,
+        var errorCo2: Boolean = false,
+        var errorVoc: Boolean = false,
+        var errorPm: Boolean = false,
+        var errorRadar: Boolean = false,
+        var errorTemp: Boolean = false,
+    ) : Uplink {
+        override fun toString(): String {
+            return "S{" +
+                    "type=" + msgType +
+                    ", fw=" + firmware +
+                    ", op=" + operationMode +
+                    ", usb=" + usbPowered +
+                    ", batt=" + batteryVoltage +
+                    ", errTemp=" + errorTemp +
+                    ", errCo2=" + errorCo2 +
+                    ", errVoc=" + errorVoc +
+                    ", errPm=" + errorPm +
+                    ", errRad=" + errorRadar +
+                    '}'
+        }
     }
 }

app/src/main/java/com/logitech/vc/kirbytest/KirbyDevice.kt

@@ -1,5 +1,6 @@
 package com.logitech.vc.kirbytest
 
+import SettingsRepository
 import android.annotation.SuppressLint
 import android.bluetooth.BluetoothDevice
 import android.bluetooth.BluetoothDevice.BOND_BONDED
@@ -15,8 +16,6 @@ import com.android.volley.toolbox.JsonObjectRequest
 import com.android.volley.toolbox.Volley
 import org.json.JSONException
 import org.json.JSONObject
-import java.nio.ByteBuffer
-import java.nio.ByteOrder
 import java.time.LocalDateTime
 import java.time.format.DateTimeFormatter
 import java.util.Base64
@@ -34,15 +33,22 @@ enum class DeviceStatus {
 
 @SuppressLint("MissingPermission")
 class KirbyDevice(
+
     private val context: Context,
     private val connectionManager: ConnectionManager,
     private val bleDevice: BluetoothDevice,
     private val loggerDb: LoggerContract.LoggerDb,
+    private val settingsRepository: SettingsRepository,
     private val onStateChange: (device: KirbyDevice) -> Unit,
 
 
+
     ) : BleListener(bleDevice.address), DeviceListEntry {
+    private val tag = "KirbyDevice"
+    private var lastSeen: Long = 0
     private val queue: RequestQueue = Volley.newRequestQueue(context)
+    private val reconnectionDelayMs = 10_000
+    private val settings = settingsRepository.getSettings()
 
     fun subscribe() {
         if(statuses.contains(DeviceStatus.CONNECTED)) {
@@ -53,8 +59,14 @@ class KirbyDevice(
     }
 
     fun connect() {
-        connectionManager.connect(bleDevice)
+        val now = System.currentTimeMillis()
-        connectionManager.discoverServices(bleDevice)
+        if (now - lastSeen > reconnectionDelayMs) {
+            Log.i(tag, "Connecting to device " + bleDevice.address)
+            connectionManager.connect(bleDevice)
+            connectionManager.discoverServices(bleDevice)
+        } else{
+            Log.i(tag, "Waiting before reconnecting to device " + bleDevice.address)
+        }
     }
 
     fun readIaq() {
@@ -66,7 +78,9 @@ class KirbyDevice(
         gatt: BluetoothGatt,
         characteristic: BluetoothGattCharacteristic
     ) {
+
         addMeasurement(characteristic)
+
         onStateChange(this)
     }
 
@@ -93,10 +107,18 @@ class KirbyDevice(
         statuses.remove(DeviceStatus.CONNECTED)
         statuses.remove(DeviceStatus.SUBSCRIBED)
         onStateChange(this)
+        Log.i(tag, "Disconnected")
     }
 
     override fun onCharChange(gatt: BluetoothGatt, characteristic: BluetoothGattCharacteristic) {
         addMeasurement(characteristic)
+        lastSeen = System.currentTimeMillis()
+
+        if(settings.lowPowerMode){
+            Log.i(tag, "Received data, closing connection")
+            connectionManager.teardownConnection(bleDevice)
+        }
+
         onStateChange(this)
     }
 
@@ -142,7 +164,7 @@ class KirbyDevice(
     private fun addMeasurement(characteristic: BluetoothGattCharacteristic) {
         val hexPayload = characteristic.value.toHexString().substring(2)
         val measurement = DecoderIaq.parseMeasurement(hexPayload)
-        var payload : Payload
+        val payload : Payload
         if (measurement == null) {
             payload = Payload(hexPayload)
         } else {
@@ -164,10 +186,10 @@ class KirbyDevice(
     }
 
     private fun publishMeasurement(payload: String) {
-        val accessKey = BuildConfig.API_KEY
+        val accessKey = settings.apiKey
-        val url = BuildConfig.API_BASE_URL
+        val url = settings.apiUrl
 
-        if(url.isEmpty()) {
+        if(url.isEmpty() || accessKey.isEmpty()) {
             return
         }
 
@@ -372,26 +394,11 @@ data class Payload(
         .format(DateTimeFormatter.ofPattern("dd.MM.yy HH:mm:ss"))
 )
 
-fun bytesToUInt16(arr: ByteArray, start: Int): Int {
-    return ByteBuffer.wrap(arr, start, 2)
-        .order(ByteOrder.LITTLE_ENDIAN).short.toInt() and 0xFFFF
-}
-
-fun bytesToInt16(arr: ByteArray, start: Int): Short {
-    return ByteBuffer.wrap(arr, start, 2)
-        .order(ByteOrder.LITTLE_ENDIAN).short
-}
-
-fun bytesToInt32(arr: ByteArray, start: Int): Int {
-    return ByteBuffer.wrap(arr, start, 4)
-        .order(ByteOrder.LITTLE_ENDIAN).int
-}
-
 
 private fun payloadToMeasurements(payload: Payload): List<Measurement> {
     return listOf(object : Measurement {
         override fun getLabel(): String {
-            return payload.ts.toString()
+            return payload.ts
         }
 
         override fun getFormattedValue(): String {

app/src/main/java/com/logitech/vc/kirbytest/MainActivity.kt

@@ -1,5 +1,6 @@
 package com.logitech.vc.kirbytest
 
+import SettingsRepository
 import android.Manifest
 import android.annotation.SuppressLint
 import android.app.Activity
@@ -8,22 +9,23 @@ import android.bluetooth.BluetoothAdapter
 import android.bluetooth.BluetoothDevice
 import android.bluetooth.BluetoothManager
 import android.bluetooth.le.ScanResult
+import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.DialogInterface
 import android.content.Intent
+import android.content.IntentFilter
 import android.content.pm.PackageManager
 import android.net.Uri
 import android.os.Build
 import android.os.Bundle
-import android.os.Handler
 import android.util.Log
 import android.view.Menu
 import android.view.MenuItem
 import android.view.View.INVISIBLE
 import android.view.View.VISIBLE
+import android.view.WindowManager
 import android.widget.Toast
 import androidx.activity.result.ActivityResultLauncher
-import androidx.activity.result.contract.ActivityResultContracts
 import androidx.activity.result.contract.ActivityResultContracts.CreateDocument
 import androidx.annotation.RequiresApi
 import androidx.appcompat.app.AppCompatActivity
@@ -35,9 +37,9 @@ import androidx.recyclerview.widget.SimpleItemAnimator
 import com.logitech.vc.kirbytest.databinding.ActivityMainBinding
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
+import settingsDialog
 import java.time.LocalDateTime
 import java.time.format.DateTimeFormatter
 import java.util.Timer
@@ -69,6 +71,7 @@ class MainActivity : AppCompatActivity() {
     private lateinit var loggerDb: LoggerContract.LoggerDb
     private lateinit var createFileLauncher: ActivityResultLauncher<String>
     private val bondedDevices = HashSet<String>()
+    private lateinit var settings: SettingsRepository
 
     private val bluetoothAdapter: BluetoothAdapter by lazy {
         val bluetoothManager = getSystemService(Context.BLUETOOTH_SERVICE) as BluetoothManager
@@ -80,7 +83,7 @@ class MainActivity : AppCompatActivity() {
         newConnectionManager()
     }
 
-    private val kirbyDevices = mutableListOf<DeviceListEntry>()
+    private val kirbyDevices = mutableListOf<KirbyDevice>()
 
     private val deviceListAdapter: DeviceListAdapter by lazy {
         DeviceListAdapter(kirbyDevices)
@@ -93,7 +96,7 @@ class MainActivity : AppCompatActivity() {
         WindowCompat.setDecorFitsSystemWindows(window, false)
         super.onCreate(savedInstanceState)
 
-
+        settings = SettingsRepository(applicationContext)
         binding = ActivityMainBinding.inflate(layoutInflater)
         setContentView(binding.root)
 
@@ -136,23 +139,39 @@ class MainActivity : AppCompatActivity() {
                 }
             }
 
-            if(hasRequiredRuntimePermissions()) {
+        if (hasRequiredRuntimePermissions()) {
-                connectionManager.startScan()
+            connectionManager.startScan()
-
+            /*
-                lifecycleScope.launch {
+            lifecycleScope.launch {
-
+                withContext(Dispatchers.Main) {
-                    withContext(Dispatchers.Main) {
+                    delay(5000L)
-                        delay(5000L)
+                    connectionManager.stopScan()
-                        connectionManager.stopScan()
-                    }
                 }
             }
+            */
+        }
 
         Timer().schedule(object : TimerTask() {
             override fun run() {
                 loggerDb.exportToMultipleCSV()
             }
         }, 1000, 10000)
+
+
+
+
+        lifecycleScope.launch {
+            settings.loadSettings()
+
+            if(settings.getSettings().lowPowerMode) {
+                window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
+            }
+        }
+
+
+        // Register for broadcasts on BluetoothAdapter state change
+        val filter = IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED)
+        registerReceiver(mReceiver, filter)
     }
 
     private fun toggleScanning(): Unit {
@@ -163,6 +182,21 @@ class MainActivity : AppCompatActivity() {
         }
     }
 
+    private val mReceiver: BroadcastReceiver = object : BroadcastReceiver() {
+        override fun onReceive(context: Context, intent: Intent) {
+            val action = intent.action
+
+            if (action == BluetoothAdapter.ACTION_STATE_CHANGED) {
+                val state = intent.getIntExtra(
+                    BluetoothAdapter.EXTRA_STATE,
+                    BluetoothAdapter.ERROR
+                )
+                Log.i("statechanged", "got state " + state.toString())
+            }
+        }
+    }
+
+
     private fun isKirbyDevice(device: BluetoothDevice): Boolean {
         val deviceName = (device.name ?: "").lowercase()
         return deviceName.contains("kirby") || deviceName.contains("krby")
@@ -194,6 +228,7 @@ class MainActivity : AppCompatActivity() {
     }
 
     private fun addBondedDevices(): Unit {
+        bondedDevices.clear()
         bluetoothAdapter.bondedDevices.filter { isKirbyDevice(it) }.forEach {
             bondedDevices.add(it.address)
             newKirbyDevice(it)
@@ -201,14 +236,6 @@ class MainActivity : AppCompatActivity() {
     }
 
 
-    @SuppressLint("NotifyDataSetChanged")
-    private fun addDummyDevices() {
-        for (i in 0..14) {
-            kirbyDevices.add(DummyListEntry("$i"))
-        }
-        deviceListAdapter.notifyDataSetChanged()
-    }
-
     private fun newConnectionManager(): ConnectionManager {
         val mngr = ConnectionManager(applicationContext, bluetoothAdapter)
         mngr.register(object : BleListener(null) {
@@ -229,20 +256,13 @@ class MainActivity : AppCompatActivity() {
                         "ScanCallback",
                         "Found Kirby device with name ${result.device.name} (address: ${result.device.address}, rssi: ${result.rssi})"
                     )
-                    val kirbyDevice = kirbyDevices.find { it.address == result.device.address }
+                    var kirbyDevice = kirbyDevices.find { it.address == result.device.address }
                     if (kirbyDevice == null) {
-                        val kirby = newKirbyDevice(result.device)
+                        kirbyDevice = newKirbyDevice(result.device)
-                        kirby.onScanResult(callbackType, result)
+                        kirbyDevice.onScanResult(callbackType, result)
-                    }
-
-                    if (bondedDevices.contains(result.device.address)) {
-                        Log.i("KirbyDevice", "Connecting to " + result.device.address)
-
-                        connectionManager.connect(result.device)
-                        connectionManager.readRemoteRssi(result.device)
-                        connectionManager.discoverServices(result.device)
                     }
 
+                    kirbyDevice.connect()
                 }
             }
         })
@@ -253,12 +273,13 @@ class MainActivity : AppCompatActivity() {
         bleDevice: BluetoothDevice
     ): KirbyDevice {
 
-        val device = KirbyDevice(this.applicationContext, connectionManager, bleDevice, loggerDb) {
+        val device =
-            val i = kirbyDevices.indexOfFirst { d -> d === it }
+            KirbyDevice(this.applicationContext, connectionManager, bleDevice, loggerDb, settings) {
-            runOnUiThread {
+                val i = kirbyDevices.indexOfFirst { d -> d === it }
-                deviceListAdapter.notifyItemChanged(i)
+                runOnUiThread {
+                    deviceListAdapter.notifyItemChanged(i)
+                }
             }
-        }
         Log.i("MainActivity", bleDevice.address)
         connectionManager.register(device)
 
@@ -303,6 +324,12 @@ class MainActivity : AppCompatActivity() {
                 return true
             }
 
+            R.id.action_settings -> {
+                val settingsDialog = settingsDialog(this, settings)
+                settingsDialog.show()
+                return true
+            }
+
             else -> super.onOptionsItemSelected(item)
         }
     }
@@ -317,6 +344,8 @@ class MainActivity : AppCompatActivity() {
     override fun onDestroy() {
         loggerDb.close()
         super.onDestroy()
+
+        unregisterReceiver(mReceiver);
     }
 
     override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {

app/src/main/java/com/logitech/vc/kirbytest/Settings.kt

@@ -0,0 +1,128 @@
+import androidx.datastore.preferences.core.edit
+
+import androidx.datastore.preferences.core.stringPreferencesKey
+import android.content.Context
+import android.content.DialogInterface
+import android.util.Log
+import android.view.LayoutInflater
+import android.widget.CheckBox
+import android.widget.EditText
+import androidx.appcompat.app.AlertDialog
+import androidx.datastore.preferences.core.booleanPreferencesKey
+import androidx.datastore.preferences.preferencesDataStore
+import com.logitech.vc.kirbytest.BuildConfig
+import com.logitech.vc.kirbytest.R
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.DelicateCoroutinesApi
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.coroutineScope
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.firstOrNull
+import kotlinx.coroutines.flow.map
+import kotlinx.coroutines.launch
+import java.net.URL
+
+
+val Context.dataStore by preferencesDataStore(name = "app_settings")
+
+class SettingsRepository(context: Context) {
+    private val dataStore = context.dataStore
+
+    private val settings = Settings(apiUrl = BuildConfig.API_BASE_URL, apiKey = BuildConfig.API_KEY)
+    private val coroutineScope = CoroutineScope(Dispatchers.IO)
+
+    companion object {
+        val API_URL = stringPreferencesKey("api_url")
+        val API_KEY = stringPreferencesKey("api_key")
+        val BLE_LOW_POWER_MODE = booleanPreferencesKey("ble_low_power_mode")
+    }
+
+    @OptIn(DelicateCoroutinesApi::class)
+    fun saveSettings(apiUrl: String, apiKey: String, isLowPowerMode: Boolean) {
+        settings.apiKey = apiKey
+        settings.apiUrl = apiUrl
+        settings.lowPowerMode = isLowPowerMode
+
+        coroutineScope.launch(Dispatchers.Main) {
+            dataStore.edit { preferences ->
+                preferences[API_URL] = apiUrl
+                preferences[API_KEY] = apiKey
+                preferences[BLE_LOW_POWER_MODE] = isLowPowerMode
+            }
+        }
+
+    }
+
+    fun getSettings(): Settings {
+        return settings
+    }
+
+    private val settingsFlow: Flow<Settings> = dataStore.data.map {
+        Settings(
+            apiUrl = it[API_URL] ?: BuildConfig.API_BASE_URL,
+            apiKey = it[API_KEY] ?: BuildConfig.API_KEY,
+            lowPowerMode = it[BLE_LOW_POWER_MODE] ?: true
+
+        )
+    }
+
+    suspend fun loadSettings() {
+        val result = settingsFlow.firstOrNull()
+        if (result != null) {
+            settings.apiKey = result.apiKey
+            settings.apiUrl = result.apiUrl
+            settings.lowPowerMode = result.lowPowerMode
+        }
+    }
+}
+
+data class Settings(var apiUrl: String, var apiKey: String, var lowPowerMode: Boolean = true)
+
+
+fun settingsDialog(context: Context, settingsRepo: SettingsRepository): AlertDialog {
+
+    val layoutInflater = LayoutInflater.from(context)
+
+    val root = layoutInflater.inflate(R.layout.settings_dialog, null)
+    val urlField = root.findViewById<EditText>(R.id.apiUrl)
+    val keyField = root.findViewById<EditText>(R.id.apiKey)
+    val lowPowerMode = root.findViewById<CheckBox>(R.id.checkboxLowPowerMode)
+
+    val settings = settingsRepo.getSettings()
+    urlField.setText(settings.apiUrl)
+    keyField.setText(settings.apiKey)
+    lowPowerMode.isChecked = settings.lowPowerMode
+
+    return androidx.appcompat.app.AlertDialog.Builder(context)
+        .setTitle(R.string.settings)
+        .setView(root)
+        .setPositiveButton(R.string.save) { dialog: DialogInterface?, whichButton: Int ->
+            Log.d("SettingsDialog", "save settings")
+
+            val url = urlField.text.toString()
+            val key = keyField.text.toString()
+            val isLowPowerMode = lowPowerMode.isChecked
+            if (isFullPath(url) || url.isEmpty()) {
+                settingsRepo.saveSettings(url, key, isLowPowerMode)
+            }
+
+        }
+        .setNegativeButton(R.string.cancel) { dialog: DialogInterface?, whichButton: Int ->
+            //Do something
+            Log.d("SettingsDialog", "cancel settings")
+        }
+
+        .create()
+
+}
+
+fun isFullPath(potentialUrl: String): Boolean {
+    try {
+        URL(potentialUrl).toURI()
+        return true
+    } catch (e: Exception) {
+        e.printStackTrace()
+    }
+    return false
+}

app/src/main/java/com/logitech/vc/kirbytest/parseUtils.kt

@@ -0,0 +1,49 @@
+package com.logitech.vc.kirbytest
+
+import org.apache.commons.codec.DecoderException
+import org.apache.commons.codec.binary.Hex
+import kotlin.math.min
+
+fun parseUnsignedInt(bytes: ByteArray, startIncl: Int, endExcl: Int): Int {
+    val section = bytes.copyOfRange(startIncl, min(bytes.size, endExcl))
+    var unsignedInt = 0
+    for (i in section.indices) {
+        unsignedInt = unsignedInt shl 8
+        unsignedInt = unsignedInt or (section[i].toInt() and 0xFF)
+    }
+    return unsignedInt
+}
+
+fun hexStringToByteArray(encoded: String): ByteArray {
+    return try {
+        Hex.decodeHex(encoded)
+    } catch (e: DecoderException) {
+        throw RuntimeException(e)
+    }
+}
+
+fun parseUnsignedIntFromBytes(byteArray: ByteArray, offset: Int, bits: Int): UInt {
+    require(bits in 1..32) { "Bits should be between 1 and 32" }
+    require(offset >= 0 && offset < byteArray.size * 8) { "Offset out of bounds" }
+
+    var result: UInt = 0u
+    var remainingBits = bits
+    var currentOffset = offset
+
+    while (remainingBits > 0) {
+        val byteIndex = currentOffset / 8
+        val bitIndex = currentOffset % 8
+        val bitsToRead = minOf(remainingBits, 8 - bitIndex)
+
+        val byteValue = byteArray[byteIndex].toInt() and 0xFF
+        val mask = (1 shl bitsToRead) - 1
+        val value = (byteValue shr (8 - bitIndex - bitsToRead)) and mask
+
+        result = (result shl bitsToRead) or value.toUInt()
+
+        currentOffset += bitsToRead
+        remainingBits -= bitsToRead
+    }
+
+    return result
+}

app/src/main/res/layout/activity_main.xml

@@ -44,7 +44,7 @@
             android:id="@+id/fab"
             android:layout_width="150dp"
             android:layout_height="match_parent"
-            android:text='Start Scan'
+            android:text='@string/start_scan'
             app:icon="@drawable/action_icon_scan"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toTopOf="parent" />

app/src/main/res/layout/settings_dialog.xml

@@ -0,0 +1,62 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+
+    <LinearLayout
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="24dp"
+        android:layout_marginTop="24dp"
+        android:layout_marginEnd="24dp"
+        android:orientation="vertical"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent">
+
+        <TextView
+            android:id="@+id/apiUrlLabel"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_weight="10"
+            android:text="API url" />
+
+
+        <EditText
+            android:id="@+id/apiUrl"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_weight="10"
+            android:ems="10"
+            android:inputType="textUri"
+            android:text="" />
+
+        <TextView
+            android:id="@+id/apiKeyLabel"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_weight="10"
+            android:text="API key" />
+
+        <EditText
+            android:id="@+id/apiKey"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_weight="20"
+            android:autofillHints="password"
+            android:ems="10"
+            android:inputType="text"
+            android:text="" />
+
+        <CheckBox android:id="@+id/checkboxLowPowerMode"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="BLE low power mode"/>
+
+
+
+    </LinearLayout>
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/menu/menu_main.xml

@@ -12,4 +12,9 @@
         android:orderInCategory="200"
         android:title="@string/action_reset_log"
         app:showAsAction="never" />
+    <item
+        android:id="@+id/action_settings"
+        android:orderInCategory="300"
+        android:title="@string/settings"
+        app:showAsAction="never" />
 </menu>

app/src/main/res/values/strings.xml

@@ -7,5 +7,11 @@
     <string name="second_fragment_label">Second Fragment</string>
     <string name="next">Next</string>
     <string name="previous">Previous</string>
+    <string name="settings">Settings</string>
+    <string name="api_url">API url</string>
+    <string name="api_key">API key</string>
+    <string name="save">Save</string>
+    <string name="cancel">Cancel</string>
+    <string name="start_scan">Start Scan</string>
 
 </resources>

app/src/test/java/com/logitech/vc/kirbytest/DecoderTest.kt

@@ -24,4 +24,27 @@ class DecoderTest {
         val testMeasurement = DecoderIaq.Measurement(msgType = 1, co2 = 428, voc = 149, humidity = 44, pressure = 96873, occupancy = 1, pm10 = null, pm25 = null, temperature = 24.7 )
         assertEquals(testMeasurement, res2)
     }
+
+    @Test
+    fun message_type_5() {
+        val res = DecoderIaq.parseMeasurement("501001C0430000")
+
+        val expected = DecoderIaq.DeviceStatus(msgType = 5, firmware = "1.0.28-4",  operationMode = 3, batteryVoltage = 0, errorPm = null, errorVoc = null, errorTemp = null, errorCo2 = null, errorRadar = null)
+        assertEquals(expected, res)
+    }
+    @Test
+    fun message_type_5_battery() {
+        val res = DecoderIaq.parseMeasurement("501001C0430FF9")
+        val expected = DecoderIaq.DeviceStatus(msgType = 5, firmware = "1.0.28-4",  operationMode = 3, batteryVoltage = 4089f/1000, errorPm = null, errorVoc = null, errorTemp = null, errorCo2 = null, errorRadar = null)
+
+        assertEquals(expected, res)
+    }
+
+    @Test
+    fun message_type_5_with_errors() {
+        val res = DecoderIaq.parseMeasurement("501001C0430FF928")
+        val expected = DecoderIaq.DeviceStatus(msgType = 5, firmware = "1.0.28-4",  operationMode = 3, batteryVoltage = 4089f/1000, errorPm = true, errorVoc = true, errorTemp = true, errorCo2 = true, errorRadar = true)
+
+        assertEquals(expected, res)
+    }
 }

build.gradle

@@ -1,6 +1,6 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 plugins {
-    id 'com.android.application' version '8.1.2' apply false
+    id 'com.android.application' version '8.5.2' apply false
-    id 'com.android.library' version '8.1.2' apply false
+    id 'com.android.library' version '8.5.2' apply false
     id 'org.jetbrains.kotlin.android' version '1.8.20' apply false
 }

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 #Wed Jun 14 12:17:09 CEST 2023
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.0-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists