Migrate PRX module to the new BLE library

2025-12-20 16:04:22 +01:00 · 2023-03-21 10:40:31 +01:00
parent 5327404349
commit a5306eaf71
9 changed files with 104 additions and 323 deletions
--- a/profile_prx/src/main/java/no/nordicsemi/android/prx/data/PRXManager.kt
+++ b/profile_prx/src/main/java/no/nordicsemi/android/prx/data/PRXManager.kt
@@ -1,179 +0,0 @@
-/*
- * Copyright (c) 2022, Nordic Semiconductor
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without modification, are
- * permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this list of
- * conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice, this list
- * of conditions and the following disclaimer in the documentation and/or other materials
- * provided with the distribution.
- *
- * 3. Neither the name of the copyright holder nor the names of its contributors may be
- * used to endorse or promote products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
- * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
- * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-package no.nordicsemi.android.prx.data
-
-import android.bluetooth.BluetoothDevice
-import android.bluetooth.BluetoothGatt
-import android.bluetooth.BluetoothGattCharacteristic
-import android.bluetooth.BluetoothGattServer
-import android.content.Context
-import android.util.Log
-import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.flow.MutableStateFlow
-import kotlinx.coroutines.flow.launchIn
-import kotlinx.coroutines.flow.onEach
-import no.nordicsemi.android.ble.BleManager
-import no.nordicsemi.android.ble.common.callback.alert.AlertLevelDataCallback
-import no.nordicsemi.android.ble.common.callback.battery.BatteryLevelResponse
-import no.nordicsemi.android.ble.common.data.alert.AlertLevelData
-import no.nordicsemi.android.ble.ktx.asValidResponseFlow
-import no.nordicsemi.android.ble.ktx.suspend
-import no.nordicsemi.android.common.logger.NordicLogger
-import no.nordicsemi.android.kotlin.ble.profile.prx.AlarmLevel
-import no.nordicsemi.android.service.ConnectionObserverAdapter
-import no.nordicsemi.android.utils.launchWithCatch
-import java.util.*
-
-val PRX_SERVICE_UUID = UUID.fromString("00001802-0000-1000-8000-00805f9b34fb")
-val LINK_LOSS_SERVICE_UUID = UUID.fromString("00001803-0000-1000-8000-00805f9b34fb")
-val ALERT_LEVEL_CHARACTERISTIC_UUID = UUID.fromString("00002A06-0000-1000-8000-00805f9b34fb")
-
-private val BATTERY_SERVICE_UUID = UUID.fromString("0000180F-0000-1000-8000-00805f9b34fb")
-private val BATTERY_LEVEL_CHARACTERISTIC_UUID = UUID.fromString("00002A19-0000-1000-8000-00805f9b34fb")
-
-internal class PRXManager(
-    context: Context,
-    private val scope: CoroutineScope,
-    private val logger: NordicLogger
-) : BleManager(context) {
-
-    private var batteryLevelCharacteristic: BluetoothGattCharacteristic? = null
-    private var alertLevelCharacteristic: BluetoothGattCharacteristic? = null
-    private var linkLossCharacteristic: BluetoothGattCharacteristic? = null
-
-    private var localAlertLevelCharacteristic: BluetoothGattCharacteristic? = null
-    private var linkLossServerCharacteristic: BluetoothGattCharacteristic? = null
-
-    private var isAlertEnabled = false
-
-    private val data = MutableStateFlow(PRXData())
-    val dataHolder = ConnectionObserverAdapter<PRXData>()
-
-    init {
-        connectionObserver = dataHolder
-
-        data.onEach {
-            dataHolder.setValue(it)
-        }.launchIn(scope)
-    }
-
-    override fun log(priority: Int, message: String) {
-        logger.log(priority, message)
-    }
-
-    override fun getMinLogPriority(): Int {
-        return Log.VERBOSE
-    }
-
-    private inner class ProximityManagerGattCallback : BleManagerGattCallback() {
-        override fun initialize() {
-            super.initialize()
-
-            setWriteCallback(localAlertLevelCharacteristic)
-                .with(object : AlertLevelDataCallback() {
-                    override fun onAlertLevelChanged(device: BluetoothDevice, level: Int) {
-                        data.value = data.value.copy(localAlarmLevel = AlarmLevel.create(level))
-                    }
-                })
-
-            setWriteCallback(linkLossServerCharacteristic)
-                .with(object : AlertLevelDataCallback() {
-                    override fun onAlertLevelChanged(device: BluetoothDevice, level: Int) {
-                        data.value = data.value.copy(linkLossAlarmLevel = AlarmLevel.create(level))
-                    }
-                })
-
-            writeCharacteristic(
-                linkLossCharacteristic,
-                AlertLevelData.highAlert(),
-                BluetoothGattCharacteristic.WRITE_TYPE_DEFAULT
-            ).enqueue()
-
-            setNotificationCallback(batteryLevelCharacteristic)
-                .asValidResponseFlow<BatteryLevelResponse>()
-                .onEach {
-                    data.value = data.value.copy(batteryLevel = it.batteryLevel)
-                }.launchIn(scope)
-            enableNotifications(batteryLevelCharacteristic).enqueue()
-        }
-
-        override fun onServerReady(server: BluetoothGattServer) {
-            val immediateAlertService = server.getService(PRX_SERVICE_UUID)
-            if (immediateAlertService != null) {
-                localAlertLevelCharacteristic = immediateAlertService.getCharacteristic(ALERT_LEVEL_CHARACTERISTIC_UUID)
-            }
-            val linkLossService = server.getService(LINK_LOSS_SERVICE_UUID)
-            if (linkLossService != null) {
-                linkLossServerCharacteristic = linkLossService.getCharacteristic(ALERT_LEVEL_CHARACTERISTIC_UUID)
-            }
-        }
-
-        override fun isRequiredServiceSupported(gatt: BluetoothGatt): Boolean {
-            gatt.getService(LINK_LOSS_SERVICE_UUID)?.run {
-                linkLossCharacteristic = getCharacteristic(ALERT_LEVEL_CHARACTERISTIC_UUID)
-            }
-            gatt.getService(BATTERY_SERVICE_UUID)?.run {
-                batteryLevelCharacteristic = getCharacteristic(BATTERY_LEVEL_CHARACTERISTIC_UUID)
-            }
-            gatt.getService(PRX_SERVICE_UUID)?.run {
-                alertLevelCharacteristic = getCharacteristic(ALERT_LEVEL_CHARACTERISTIC_UUID)
-            }
-            return linkLossCharacteristic != null
-        }
-
-        override fun onServicesInvalidated() {
-            batteryLevelCharacteristic = null
-            alertLevelCharacteristic = null
-            linkLossCharacteristic = null
-            localAlertLevelCharacteristic = null
-            linkLossServerCharacteristic = null
-            isAlertEnabled = false
-        }
-    }
-
-    fun writeImmediateAlert(on: Boolean) {
-        if (!isConnected) return
-        scope.launchWithCatch {
-            writeCharacteristic(
-                alertLevelCharacteristic,
-                if (on) AlertLevelData.highAlert() else AlertLevelData.noAlert(),
-                BluetoothGattCharacteristic.WRITE_TYPE_NO_RESPONSE
-            ).suspend()
-
-            isAlertEnabled = on
-            data.value = data.value.copy(isRemoteAlarm = on)
-        }
-    }
-
-    override fun getGattCallback(): BleManagerGattCallback {
-        return ProximityManagerGattCallback()
-    }
-}
--- a/profile_prx/src/main/java/no/nordicsemi/android/prx/data/ProximityServerManager.kt
+++ b/profile_prx/src/main/java/no/nordicsemi/android/prx/data/ProximityServerManager.kt
@@ -1,76 +0,0 @@
-/*
- * Copyright (c) 2022, Nordic Semiconductor
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without modification, are
- * permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this list of
- * conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice, this list
- * of conditions and the following disclaimer in the documentation and/or other materials
- * provided with the distribution.
- *
- * 3. Neither the name of the copyright holder nor the names of its contributors may be
- * used to endorse or promote products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
- * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
- * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-package no.nordicsemi.android.prx.data
-
-import android.bluetooth.BluetoothGattCharacteristic
-import android.bluetooth.BluetoothGattService
-import android.content.Context
-import android.util.Log
-import dagger.hilt.android.qualifiers.ApplicationContext
-import no.nordicsemi.android.ble.BleServerManager
-import no.nordicsemi.android.ble.common.data.alert.AlertLevelData
-import javax.inject.Inject
-
-internal class ProximityServerManager @Inject constructor(
-    @ApplicationContext
-    context: Context
-) : BleServerManager(context) {
-
-    override fun log(priority: Int, message: String) {
-        Log.println(priority, "BleManager", message)
-    }
-
-    override fun initializeServer(): List<BluetoothGattService> {
-        val services: MutableList<BluetoothGattService> = ArrayList()
-        services.add(
-            service(
-                PRX_SERVICE_UUID,
-                characteristic(
-                    ALERT_LEVEL_CHARACTERISTIC_UUID,
-                    BluetoothGattCharacteristic.PROPERTY_WRITE_NO_RESPONSE,
-                    BluetoothGattCharacteristic.PERMISSION_WRITE
-                )
-            )
-        )
-        services.add(
-            service(
-                LINK_LOSS_SERVICE_UUID,
-                characteristic(
-                    ALERT_LEVEL_CHARACTERISTIC_UUID,
-                    BluetoothGattCharacteristic.PROPERTY_WRITE or BluetoothGattCharacteristic.PROPERTY_READ,
-                    BluetoothGattCharacteristic.PERMISSION_WRITE or BluetoothGattCharacteristic.PERMISSION_READ,
-                    AlertLevelData.highAlert()
-                )
-            )
-        )
-        return services
-    }
-}
--- a/profile_prx/src/main/java/no/nordicsemi/android/prx/repository/AlarmHandler.kt
+++ b/profile_prx/src/main/java/no/nordicsemi/android/prx/repository/AlarmHandler.kt
@@ -35,7 +35,7 @@ import android.content.Context
 import android.media.RingtoneManager
 import android.os.Build
 import dagger.hilt.android.qualifiers.ApplicationContext
-import no.nordicsemi.android.prx.data.AlarmLevel
+import no.nordicsemi.android.kotlin.ble.profile.prx.AlarmLevel
 import javax.inject.Inject

 internal class AlarmHandler @Inject constructor(
--- a/profile_prx/src/main/java/no/nordicsemi/android/prx/repository/PRXRepository.kt
+++ b/profile_prx/src/main/java/no/nordicsemi/android/prx/repository/PRXRepository.kt
@@ -42,11 +42,9 @@ import no.nordicsemi.android.common.logger.NordicLogger
 import no.nordicsemi.android.common.logger.NordicLoggerFactory
 import no.nordicsemi.android.kotlin.ble.core.ServerDevice
 import no.nordicsemi.android.kotlin.ble.core.data.GattConnectionState
-import no.nordicsemi.android.kotlin.ble.profile.hrs.data.HRSData
 import no.nordicsemi.android.kotlin.ble.profile.prx.AlarmLevel
 import no.nordicsemi.android.kotlin.ble.profile.prx.PRXData
 import no.nordicsemi.android.prx.data.PRXServiceData
-import no.nordicsemi.android.prx.data.ProximityServerManager
 import no.nordicsemi.android.service.BleManagerResult
 import no.nordicsemi.android.service.DisconnectAndStopEvent
 import no.nordicsemi.android.service.LinkLossResult
@@ -61,10 +59,7 @@ class PRXRepository @Inject internal constructor(
    @ApplicationContext
    private val context: Context,
    private val serviceManager: ServiceManager,
-    private val proximityServerManager: ProximityServerManager,
    private val alarmHandler: AlarmHandler,
-    private val loggerFactory: NordicLoggerFactory,
-    private val stringConst: StringConst
 ) {

    private val _data = MutableStateFlow(PRXServiceData())
@@ -73,6 +68,9 @@ class PRXRepository @Inject internal constructor(
    private val _stopEvent = simpleSharedFlow<DisconnectAndStopEvent>()
    internal val stopEvent = _stopEvent.asSharedFlow()

+    private val _remoteAlarmLevel = simpleSharedFlow<AlarmLevel>()
+    internal val remoteAlarmLevel = _remoteAlarmLevel.asSharedFlow()
+
    val isRunning = data.map { it.connectionState == GattConnectionState.STATE_CONNECTED }

    fun launch(device: ServerDevice) {
@@ -87,6 +85,14 @@ class PRXRepository @Inject internal constructor(
        _data.value = _data.value.copy(connectionState = connectionState)
    }

+    fun setLocalAlarmLevel(alarmLevel: AlarmLevel) {
+        _data.value = _data.value.copy(localAlarmLevel = alarmLevel)
+    }
+
+    fun setLinkLossAlarmLevel(alarmLevel: AlarmLevel) {
+        _data.value = _data.value.copy(linkLossAlarmLevel = alarmLevel)
+    }
+
    private fun handleLocalAlarm(result: BleManagerResult<PRXData>) {
        (result as? SuccessResult<PRXData>)?.let {
            if (it.data.localAlarmLevel != AlarmLevel.NONE) {
@@ -105,20 +111,20 @@ class PRXRepository @Inject internal constructor(
        _data.value = _data.value.copy(batteryLevel = batteryLevel)
    }

-    fun enableAlarm() {
-        manager?.writeImmediateAlert(true)
+    fun setRemoteAlarmLevel(alarmLevel: AlarmLevel) {
+        _remoteAlarmLevel.tryEmit(alarmLevel)
    }

-    fun disableAlarm() {
-        manager?.writeImmediateAlert(false)
+    fun onRemoteAlarmLevelSet(alarmLevel: AlarmLevel) {
+        _data.value = _data.value.copy(isRemoteAlarm = alarmLevel != AlarmLevel.NONE)
    }

    fun openLogger() {
-        NordicLogger.launch(context, logger)
+        TODO()
    }

    fun release() {
-        disableAlarm()
+        _remoteAlarmLevel.tryEmit(AlarmLevel.NONE)
        _stopEvent.tryEmit(DisconnectAndStopEvent())
    }
 }
--- a/profile_prx/src/main/java/no/nordicsemi/android/prx/repository/PRXService.kt
+++ b/profile_prx/src/main/java/no/nordicsemi/android/prx/repository/PRXService.kt
@@ -33,6 +33,7 @@ package no.nordicsemi.android.prx.repository

 import android.annotation.SuppressLint
 import android.content.Intent
+import android.util.Log
 import androidx.lifecycle.lifecycleScope
 import dagger.hilt.android.AndroidEntryPoint
 import kotlinx.coroutines.flow.filterNotNull
@@ -41,6 +42,7 @@ import kotlinx.coroutines.flow.mapNotNull
 import kotlinx.coroutines.flow.onEach
 import kotlinx.coroutines.launch
 import no.nordicsemi.android.kotlin.ble.core.ServerDevice
+import no.nordicsemi.android.kotlin.ble.core.client.BleWriteType
 import no.nordicsemi.android.kotlin.ble.core.client.callback.BleGattClient
 import no.nordicsemi.android.kotlin.ble.core.client.service.BleGattCharacteristic
 import no.nordicsemi.android.kotlin.ble.core.client.service.BleGattServices
@@ -51,8 +53,11 @@ import no.nordicsemi.android.kotlin.ble.core.server.BleGattServer
 import no.nordicsemi.android.kotlin.ble.core.server.service.service.BleGattServerServiceType
 import no.nordicsemi.android.kotlin.ble.core.server.service.service.BleServerGattCharacteristicConfig
 import no.nordicsemi.android.kotlin.ble.core.server.service.service.BleServerGattServiceConfig
+import no.nordicsemi.android.kotlin.ble.core.server.service.service.BluetoothGattServerConnection
 import no.nordicsemi.android.kotlin.ble.profile.battery.BatteryLevelParser
-import no.nordicsemi.android.kotlin.ble.profile.hts.HTSDataParser
+import no.nordicsemi.android.kotlin.ble.profile.prx.AlarmLevel
+import no.nordicsemi.android.kotlin.ble.profile.prx.AlarmLevelParser
+import no.nordicsemi.android.kotlin.ble.profile.prx.AlertLevelInputParser
 import no.nordicsemi.android.service.DEVICE_DATA
 import no.nordicsemi.android.service.NotificationService
 import java.util.*
@@ -60,6 +65,7 @@ import javax.inject.Inject

 val PRX_SERVICE_UUID = UUID.fromString("00001802-0000-1000-8000-00805f9b34fb")
 private val LINK_LOSS_SERVICE_UUID = UUID.fromString("00001803-0000-1000-8000-00805f9b34fb")
+
 private val ALERT_LEVEL_CHARACTERISTIC_UUID = UUID.fromString("00002A06-0000-1000-8000-00805f9b34fb")

 private val BATTERY_SERVICE_UUID = UUID.fromString("0000180F-0000-1000-8000-00805f9b34fb")
@@ -73,6 +79,7 @@ internal class PRXService : NotificationService() {
    lateinit var repository: PRXRepository

    private lateinit var client: BleGattClient
+    private lateinit var server: BleGattServer

    private lateinit var alertLevelCharacteristic: BleGattCharacteristic

@@ -81,37 +88,69 @@ internal class PRXService : NotificationService() {

        val device = intent!!.getParcelableExtra<ServerDevice>(DEVICE_DATA)!!

+        startServer()
+
        startGattClient(device)

        repository.stopEvent
            .onEach { disconnect() }
            .launchIn(lifecycleScope)

+        repository.remoteAlarmLevel
+            .onEach { writeAlertLevel(it) }
+            .launchIn(lifecycleScope)
+
        return START_REDELIVER_INTENT
    }

    private fun startServer() {
        val alertLevelCharacteristic = BleServerGattCharacteristicConfig(
-            ALERT_LEVEL_CHARACTERISTIC_UUID,
-            listOf(BleGattProperty.PROPERTY_WRITE_NO_RESPONSE),
-            listOf(BleGattPermission.PERMISSION_WRITE)
+            uuid = ALERT_LEVEL_CHARACTERISTIC_UUID,
+            properties = listOf(BleGattProperty.PROPERTY_WRITE_NO_RESPONSE),
+            permissions = listOf(BleGattPermission.PERMISSION_WRITE)
+        )
+        val prxServiceConfig = BleServerGattServiceConfig(
+            uuid = PRX_SERVICE_UUID,
+            type = BleGattServerServiceType.SERVICE_TYPE_PRIMARY,
+            characteristicConfigs = listOf(alertLevelCharacteristic)
        )

        val linkLossCharacteristic = BleServerGattCharacteristicConfig(
-            LINK_LOSS_SERVICE_UUID,
-            listOf(BleGattProperty.PROPERTY_WRITE, BleGattProperty.PROPERTY_READ),
-            listOf(BleGattPermission.PERMISSION_WRITE, BleGattPermission.PERMISSION_READ)
+            uuid = ALERT_LEVEL_CHARACTERISTIC_UUID,
+            properties = listOf(BleGattProperty.PROPERTY_WRITE, BleGattProperty.PROPERTY_READ),
+            permissions = listOf(BleGattPermission.PERMISSION_WRITE, BleGattPermission.PERMISSION_READ),
+            initialValue = AlertLevelInputParser.parse(AlarmLevel.HIGH)
        )

-        val serviceConfig = BleServerGattServiceConfig(
-            PRX_SERVICE_UUID,
-            BleGattServerServiceType.SERVICE_TYPE_PRIMARY,
-            listOf(alertLevelCharacteristic, linkLossCharacteristic)
+        val linkLossServiceConfig = BleServerGattServiceConfig(
+            uuid = LINK_LOSS_SERVICE_UUID,
+            type = BleGattServerServiceType.SERVICE_TYPE_PRIMARY,
+            characteristicConfigs = listOf(linkLossCharacteristic)
        )

-        val server = BleGattServer.create(this@PRXService, serviceConfig)
+        server = BleGattServer.create(this@PRXService, prxServiceConfig, linkLossServiceConfig)

-        TODO("Initialize characteristic with value")
+        server.onNewConnection
+            .onEach { setUpServerConnection(it.second) }
+            .launchIn(lifecycleScope)
+    }
+
+    private fun setUpServerConnection(connection: BluetoothGattServerConnection) {
+        val prxService = connection.services.findService(PRX_SERVICE_UUID)!!
+        val linkLossService = connection.services.findService(LINK_LOSS_SERVICE_UUID)!!
+
+        val prxCharacteristic = prxService.findCharacteristic(ALERT_LEVEL_CHARACTERISTIC_UUID)!!
+        val linkLossCharacteristic = linkLossService.findCharacteristic(ALERT_LEVEL_CHARACTERISTIC_UUID)!!
+
+        prxCharacteristic.value
+            .mapNotNull { AlarmLevelParser.parse(it) }
+            .onEach { repository.setLocalAlarmLevel(it) }
+            .launchIn(lifecycleScope)
+
+        linkLossCharacteristic.value
+            .mapNotNull { AlarmLevelParser.parse(it) }
+            .onEach { repository.setLocalAlarmLevel(it) }
+            .launchIn(lifecycleScope)
    }

    private fun startGattClient(device: ServerDevice) = lifecycleScope.launch {
@@ -132,7 +171,8 @@ internal class PRXService : NotificationService() {
    private suspend fun configureGatt(services: BleGattServices, device: ServerDevice) {
        val prxService = services.findService(PRX_SERVICE_UUID)!!
        alertLevelCharacteristic = prxService.findCharacteristic(ALERT_LEVEL_CHARACTERISTIC_UUID)!!
-        val linkLossCharacteristic = prxService.findCharacteristic(LINK_LOSS_SERVICE_UUID)!!
+        val linkLossService = services.findService(LINK_LOSS_SERVICE_UUID)!!
+        val linkLossCharacteristic = linkLossService.findCharacteristic(ALERT_LEVEL_CHARACTERISTIC_UUID)!!
        val batteryService = services.findService(BATTERY_SERVICE_UUID)!!
        val batteryLevelCharacteristic = batteryService.findCharacteristic(BATTERY_LEVEL_CHARACTERISTIC_UUID)!!

@@ -141,16 +181,16 @@ internal class PRXService : NotificationService() {
            .onEach { repository.onBatteryLevelChanged(it) }
            .launchIn(lifecycleScope)

-        linkLossCharacteristic.write(Alert)
-
-        htsMeasurementCharacteristic.getNotifications()
-            .mapNotNull { HTSDataParser.parse(it) }
-            .onEach { repository.onHTSDataChanged(it) }
-            .launchIn(lifecycleScope)
+        linkLossCharacteristic.write(AlertLevelInputParser.parse(AlarmLevel.HIGH))

        repository.onInitComplete(device)
    }

+    private suspend fun writeAlertLevel(alarmLevel: AlarmLevel) {
+        alertLevelCharacteristic.write(AlertLevelInputParser.parse(alarmLevel), BleWriteType.NO_RESPONSE)
+        repository.onRemoteAlarmLevelSet(alarmLevel)
+    }
+
    private fun stopIfDisconnected(connectionState: GattConnectionState) {
        if (connectionState == GattConnectionState.STATE_DISCONNECTED) {
            stopSelf()
@@ -159,5 +199,6 @@ internal class PRXService : NotificationService() {

    private fun disconnect() {
        client.disconnect()
+        server.stopServer()
    }
 }
--- a/profile_prx/src/main/java/no/nordicsemi/android/prx/view/PRXContentView.kt
+++ b/profile_prx/src/main/java/no/nordicsemi/android/prx/view/PRXContentView.kt
@@ -44,13 +44,14 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import no.nordicsemi.android.prx.R
+import no.nordicsemi.android.prx.data.PRXServiceData
 import no.nordicsemi.android.ui.view.BatteryLevelView
 import no.nordicsemi.android.ui.view.KeyValueField
 import no.nordicsemi.android.ui.view.ScreenSection
 import no.nordicsemi.android.ui.view.SectionTitle

@Composable
-internal fun ContentView(state: PRXData, onEvent: (PRXScreenViewEvent) -> Unit) {
+internal fun ContentView(state: PRXServiceData, onEvent: (PRXScreenViewEvent) -> Unit) {
    Column(
        horizontalAlignment = Alignment.CenterHorizontally
    ) {
@@ -77,7 +78,7 @@ internal fun ContentView(state: PRXData, onEvent: (PRXScreenViewEvent) -> Unit)
 }

@Composable
-private fun SettingsSection(state: PRXData, onEvent: (PRXScreenViewEvent) -> Unit) {
+private fun SettingsSection(state: PRXServiceData, onEvent: (PRXScreenViewEvent) -> Unit) {
    ScreenSection {
        SectionTitle(icon = Icons.Default.Settings, title = stringResource(R.string.prx_settings))

@@ -110,7 +111,7 @@ private fun TurnAlarmOffButton(onEvent: (PRXScreenViewEvent) -> Unit) {
 }

@Composable
-private fun RecordsSection(state: PRXData) {
+private fun RecordsSection(state: PRXServiceData) {
    ScreenSection {
        SectionTitle(resId = R.drawable.ic_records, title = stringResource(id = R.string.prx_records))

--- a/profile_prx/src/main/java/no/nordicsemi/android/prx/view/PRXMapper.kt
+++ b/profile_prx/src/main/java/no/nordicsemi/android/prx/view/PRXMapper.kt
@@ -33,8 +33,8 @@ package no.nordicsemi.android.prx.view

 import androidx.compose.runtime.Composable
 import androidx.compose.ui.res.stringResource
+import no.nordicsemi.android.kotlin.ble.profile.prx.AlarmLevel
 import no.nordicsemi.android.prx.R
-import no.nordicsemi.android.prx.data.AlarmLevel

@Composable
 internal fun Boolean.toDisplayString(): String {
--- a/profile_prx/src/main/java/no/nordicsemi/android/prx/view/PRXScreen.kt
+++ b/profile_prx/src/main/java/no/nordicsemi/android/prx/view/PRXScreen.kt
@@ -46,17 +46,10 @@ import androidx.hilt.navigation.compose.hiltViewModel
 import no.nordicsemi.android.common.ui.scanner.view.DeviceConnectingView
 import no.nordicsemi.android.common.ui.scanner.view.DeviceDisconnectedView
 import no.nordicsemi.android.common.ui.scanner.view.Reason
+import no.nordicsemi.android.kotlin.ble.core.data.GattConnectionState
 import no.nordicsemi.android.prx.R
+import no.nordicsemi.android.prx.data.PRXServiceData
 import no.nordicsemi.android.prx.viewmodel.PRXViewModel
-import no.nordicsemi.android.service.ConnectedResult
-import no.nordicsemi.android.service.ConnectingResult
-import no.nordicsemi.android.service.DeviceHolder
-import no.nordicsemi.android.service.DisconnectedResult
-import no.nordicsemi.android.service.IdleResult
-import no.nordicsemi.android.service.LinkLossResult
-import no.nordicsemi.android.service.MissingServiceResult
-import no.nordicsemi.android.service.SuccessResult
-import no.nordicsemi.android.service.UnknownErrorResult
 import no.nordicsemi.android.ui.view.BackIconAppBar
 import no.nordicsemi.android.ui.view.LoggerIconAppBar
 import no.nordicsemi.android.ui.view.NavigateUpButton
@@ -78,17 +71,15 @@ fun PRXScreen() {
                .padding(16.dp)
                .verticalScroll(rememberScrollState())
        ) {
-            when (state) {
-                NoDeviceState -> DeviceConnectingView()
-                is WorkingState -> when (state.result) {
-                    is IdleResult,
-                    is ConnectingResult -> DeviceConnectingView { NavigateUpButton(navigateUp) }
-                    is ConnectedResult -> DeviceConnectingView { NavigateUpButton(navigateUp) }
-                    is DisconnectedResult -> DeviceDisconnectedView(Reason.USER) { NavigateUpButton(navigateUp) }
-                    is LinkLossResult -> DeviceDisconnectedView(Reason.LINK_LOSS) { NavigateUpButton(navigateUp) }
-                    is MissingServiceResult -> DeviceDisconnectedView(Reason.MISSING_SERVICE) { NavigateUpButton(navigateUp) }
-                    is UnknownErrorResult -> DeviceDisconnectedView(Reason.UNKNOWN) { NavigateUpButton(navigateUp) }
-                    is SuccessResult -> ContentView(state.result.data) { viewModel.onEvent(it) }
+            if (state.deviceName == null) {
+                DeviceConnectingView()
+            } else {
+                when (state.connectionState) {
+                    null,
+                    GattConnectionState.STATE_CONNECTING -> DeviceConnectingView { NavigateUpButton(navigateUp) }
+                    GattConnectionState.STATE_DISCONNECTED,
+                    GattConnectionState.STATE_DISCONNECTING -> DeviceDisconnectedView(Reason.UNKNOWN) { NavigateUpButton(navigateUp) }
+                    GattConnectionState.STATE_CONNECTED -> ContentView(state) { viewModel.onEvent(it) }
                }
            }
        }
@@ -96,16 +87,12 @@ fun PRXScreen() {
 }

@Composable
-private fun AppBar(state: PRXViewState, navigateUp: () -> Unit, viewModel: PRXViewModel) {
-    val toolbarName = (state as? WorkingState)?.let {
-        (it.result as? DeviceHolder)?.deviceName()
-    }
-
-    if (toolbarName == null) {
-        BackIconAppBar(stringResource(id = R.string.prx_title), navigateUp)
-    } else {
-        LoggerIconAppBar(toolbarName, navigateUp, { viewModel.onEvent(DisconnectEvent) }) {
+private fun AppBar(state: PRXServiceData, navigateUp: () -> Unit, viewModel: PRXViewModel) {
+    if (state.deviceName?.isNotBlank() == true) {
+        LoggerIconAppBar(state.deviceName, navigateUp, { viewModel.onEvent(DisconnectEvent) }) {
            viewModel.onEvent(OpenLoggerEvent)
        }
+    } else {
+        BackIconAppBar(stringResource(id = R.string.prx_title), navigateUp)
    }
 }
--- a/profile_prx/src/main/java/no/nordicsemi/android/prx/viewmodel/PRXViewModel.kt
+++ b/profile_prx/src/main/java/no/nordicsemi/android/prx/viewmodel/PRXViewModel.kt
@@ -46,8 +46,9 @@ import no.nordicsemi.android.common.navigation.NavigationResult
 import no.nordicsemi.android.common.navigation.Navigator
 import no.nordicsemi.android.kotlin.ble.core.ServerDevice
 import no.nordicsemi.android.kotlin.ble.core.data.GattConnectionState
-import no.nordicsemi.android.prx.data.PRX_SERVICE_UUID
+import no.nordicsemi.android.kotlin.ble.profile.prx.AlarmLevel
 import no.nordicsemi.android.prx.repository.PRXRepository
+import no.nordicsemi.android.prx.repository.PRX_SERVICE_UUID
 import no.nordicsemi.android.prx.view.DisconnectEvent
 import no.nordicsemi.android.prx.view.NavigateUpEvent
 import no.nordicsemi.android.prx.view.OpenLoggerEvent
@@ -98,8 +99,8 @@ internal class PRXViewModel @Inject constructor(
    fun onEvent(event: PRXScreenViewEvent) {
        when (event) {
            DisconnectEvent -> disconnect()
-            TurnOffAlert -> repository.disableAlarm()
-            TurnOnAlert -> repository.enableAlarm()
+            TurnOffAlert -> repository.setRemoteAlarmLevel(AlarmLevel.NONE)
+            TurnOnAlert -> repository.setRemoteAlarmLevel(AlarmLevel.HIGH)
            NavigateUpEvent -> navigationManager.navigateUp()
            OpenLoggerEvent -> repository.openLogger()
        }