examples/light-switch-app/nrfconnect/main/AppTask.cpp - third_party/github/project-chip/connectedhomeip - Git at Google

 /*
  *
  *    Copyright (c) 2022 Project CHIP Authors
  *    All rights reserved.
  *
  *    Licensed under the Apache License, Version 2.0 (the "License");
  *    you may not use this file except in compliance with the License.
  *    You may obtain a copy of the License at
  *
  *        http://www.apache.org/licenses/LICENSE-2.0
  *
  *    Unless required by applicable law or agreed to in writing, software
  *    distributed under the License is distributed on an "AS IS" BASIS,
  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  *    See the License for the specific language governing permissions and
  *    limitations under the License.
  */

 #include "AppTask.h"
 #include "AppConfig.h"
 #include "BoardUtil.h"
 #include "FabricTableDelegate.h"
 #include "LEDUtil.h"
 #include "LightSwitch.h"

 #include <DeviceInfoProviderImpl.h>
 #include <app/TestEventTriggerDelegate.h>
 #include <app/clusters/identify-server/identify-server.h>
 #include <app/clusters/ota-requestor/OTATestEventTriggerHandler.h>
 #include <app/server/OnboardingCodesUtil.h>
 #include <app/server/Server.h>
 #include <credentials/DeviceAttestationCredsProvider.h>
 #include <credentials/examples/DeviceAttestationCredsExample.h>
 #include <lib/support/CHIPMem.h>
 #include <lib/support/CodeUtils.h>
 #include <lib/support/SafeInt.h>
 #include <platform/CHIPDeviceLayer.h>
 #include <system/SystemError.h>

 #ifdef CONFIG_CHIP_WIFI
 #include <app/clusters/network-commissioning/network-commissioning.h>
 #include <platform/nrfconnect/wifi/NrfWiFiDriver.h>
 #endif

 #ifdef CONFIG_CHIP_OTA_REQUESTOR
 #include "OTAUtil.h"
 #endif

 #ifdef CONFIG_CHIP_CRYPTO_PSA
 #include <crypto/PSAOperationalKeystore.h>
 #ifdef CONFIG_CHIP_MIGRATE_OPERATIONAL_KEYS_TO_ITS
 #include "MigrationManager.h"
 #endif
 #endif

 #include <dk_buttons_and_leds.h>
 #include <zephyr/kernel.h>
 #include <zephyr/logging/log.h>

 LOG_MODULE_DECLARE(app, CONFIG_CHIP_APP_LOG_LEVEL);

 using namespace ::chip;
 using namespace ::chip::app;
 using namespace ::chip::Credentials;
 using namespace ::chip::DeviceLayer;

 namespace {
 constexpr EndpointId kLightDimmerSwitchEndpointId  = 1;
 constexpr EndpointId kLightGenericSwitchEndpointId = 2;
 constexpr EndpointId kLightEndpointId              = 1;

 constexpr uint32_t kFactoryResetTriggerTimeout      = 3000;
 constexpr uint32_t kFactoryResetCancelWindowTimeout = 3000;
 constexpr uint32_t kDimmerTriggeredTimeout          = 500;
 constexpr uint32_t kDimmerInterval                  = 300;
 constexpr size_t kAppEventQueueSize                 = 10;

 K_MSGQ_DEFINE(sAppEventQueue, sizeof(AppEvent), kAppEventQueueSize, alignof(AppEvent));

 Identify sIdentify = { kLightEndpointId, AppTask::IdentifyStartHandler, AppTask::IdentifyStopHandler,
                        Clusters::Identify::IdentifyTypeEnum::kVisibleIndicator };

 // NOTE! This key is for test/certification only and should not be available in production devices!
 // If CONFIG_CHIP_FACTORY_DATA is enabled, this value is read from the factory data.
 uint8_t sTestEventTriggerEnableKey[TestEventTriggerDelegate::kEnableKeyLength] = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
                                                                                    0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff };

 LEDWidget sStatusLED;
 LEDWidget sIdentifyLED;
 #if NUMBER_OF_LEDS == 4
 FactoryResetLEDsWrapper<2> sFactoryResetLEDs{ { FACTORY_RESET_SIGNAL_LED, FACTORY_RESET_SIGNAL_LED1 } };
 #endif

 bool sIsNetworkProvisioned = false;
 bool sIsNetworkEnabled     = false;
 bool sHaveBLEConnections   = false;
 bool sWasDimmerTriggered   = false;

 k_timer sFunctionTimer;
 k_timer sDimmerPressKeyTimer;
 k_timer sDimmerTimer;

 chip::DeviceLayer::DeviceInfoProviderImpl gExampleDeviceInfoProvider;

 #ifdef CONFIG_CHIP_CRYPTO_PSA
 chip::Crypto::PSAOperationalKeystore sPSAOperationalKeystore{};
 #endif
 } // namespace

 namespace LedConsts {
 constexpr uint32_t kBlinkRate_ms{ 500 };
 constexpr uint32_t kIdentifyBlinkRate_ms{ 500 };

 namespace StatusLed {
 namespace Unprovisioned {
 constexpr uint32_t kOn_ms{ 100 };
 constexpr uint32_t kOff_ms{ kOn_ms };
 } // namespace Unprovisioned
 namespace Provisioned {
 constexpr uint32_t kOn_ms{ 50 };
 constexpr uint32_t kOff_ms{ 950 };
 } // namespace Provisioned

 } // namespace StatusLed
 } // namespace LedConsts

 #ifdef CONFIG_CHIP_WIFI
 app::Clusters::NetworkCommissioning::Instance sWiFiCommissioningInstance(0, &(NetworkCommissioning::NrfWiFiDriver::Instance()));
 #endif

 CHIP_ERROR AppTask::Init()
 {
     // Initialize CHIP
     LOG_INF("Init CHIP stack");

     CHIP_ERROR err = Platform::MemoryInit();
     if (err != CHIP_NO_ERROR)
     {
         LOG_ERR("Platform::MemoryInit() failed");
         return err;
     }

     err = PlatformMgr().InitChipStack();
     if (err != CHIP_NO_ERROR)
     {
         LOG_ERR("PlatformMgr().InitChipStack() failed");
         return err;
     }

 #if defined(CONFIG_NET_L2_OPENTHREAD)
     err = ThreadStackMgr().InitThreadStack();
     if (err != CHIP_NO_ERROR)
     {
         LOG_ERR("ThreadStackMgr().InitThreadStack() failed: %s", ErrorStr(err));
         return err;
     }

 #ifdef CONFIG_OPENTHREAD_MTD_SED
     err = ConnectivityMgr().SetThreadDeviceType(ConnectivityManager::kThreadDeviceType_SleepyEndDevice);
 #else
     err = ConnectivityMgr().SetThreadDeviceType(ConnectivityManager::kThreadDeviceType_MinimalEndDevice);
 #endif
     if (err != CHIP_NO_ERROR)
     {
         LOG_ERR("ConnectivityMgr().SetThreadDeviceType() failed: %s", ErrorStr(err));
         return err;
     }
 #elif defined(CONFIG_CHIP_WIFI)
     sWiFiCommissioningInstance.Init();
 #else
     return CHIP_ERROR_INTERNAL;
 #endif

     LightSwitch::GetInstance().Init(kLightDimmerSwitchEndpointId, kLightGenericSwitchEndpointId);

     // Initialize UI components
     LEDWidget::InitGpio();
     LEDWidget::SetStateUpdateCallback(LEDStateUpdateHandler);

     sStatusLED.Init(SYSTEM_STATE_LED);
     sIdentifyLED.Init(IDENTIFY_LED);
     UpdateStatusLED();

     int ret = dk_buttons_init(ButtonEventHandler);
     if (ret)
     {
         LOG_ERR("dk_buttons_init() failed");
         return System::MapErrorZephyr(ret);
     }

 #ifdef CONFIG_CHIP_OTA_REQUESTOR
     /* OTA image confirmation must be done before the factory data init. */
     OtaConfirmNewImage();
 #endif

     // Initialize Timers
     k_timer_init(&sFunctionTimer, AppTask::FunctionTimerTimeoutCallback, nullptr);
     k_timer_init(&sDimmerPressKeyTimer, AppTask::FunctionTimerTimeoutCallback, nullptr);
     k_timer_init(&sDimmerTimer, AppTask::FunctionTimerTimeoutCallback, nullptr);
     k_timer_user_data_set(&sDimmerTimer, this);
     k_timer_user_data_set(&sDimmerPressKeyTimer, this);
     k_timer_user_data_set(&sFunctionTimer, this);

     // Initialize DFU
 #ifdef CONFIG_MCUMGR_TRANSPORT_BT
     GetDFUOverSMP().Init();
     GetDFUOverSMP().ConfirmNewImage();
 #endif

     // Print initial configs
 #if CONFIG_CHIP_FACTORY_DATA
     ReturnErrorOnFailure(mFactoryDataProvider.Init());
     SetDeviceInstanceInfoProvider(&mFactoryDataProvider);
     SetDeviceAttestationCredentialsProvider(&mFactoryDataProvider);
     SetCommissionableDataProvider(&mFactoryDataProvider);
     // Read EnableKey from the factory data.
     MutableByteSpan enableKey(sTestEventTriggerEnableKey);
     err = mFactoryDataProvider.GetEnableKey(enableKey);
     if (err != CHIP_NO_ERROR)
     {
         LOG_ERR("mFactoryDataProvider.GetEnableKey() failed. Could not delegate a test event trigger");
         memset(sTestEventTriggerEnableKey, 0, sizeof(sTestEventTriggerEnableKey));
     }
 #else
     SetDeviceInstanceInfoProvider(&DeviceInstanceInfoProviderMgrImpl());
     SetDeviceAttestationCredentialsProvider(Examples::GetExampleDACProvider());
 #endif

     static CommonCaseDeviceServerInitParams initParams;
     static SimpleTestEventTriggerDelegate sTestEventTriggerDelegate{};
     static OTATestEventTriggerHandler sOtaTestEventTriggerHandler{};
     VerifyOrDie(sTestEventTriggerDelegate.Init(ByteSpan(sTestEventTriggerEnableKey)) == CHIP_NO_ERROR);
     VerifyOrDie(sTestEventTriggerDelegate.AddHandler(&sOtaTestEventTriggerHandler) == CHIP_NO_ERROR);
 #ifdef CONFIG_CHIP_CRYPTO_PSA
     initParams.operationalKeystore = &sPSAOperationalKeystore;
 #endif
     (void) initParams.InitializeStaticResourcesBeforeServerInit();
     initParams.testEventTriggerDelegate = &sTestEventTriggerDelegate;
     ReturnErrorOnFailure(chip::Server::GetInstance().Init(initParams));
     AppFabricTableDelegate::Init();

 #ifdef CONFIG_CHIP_MIGRATE_OPERATIONAL_KEYS_TO_ITS
     err = MoveOperationalKeysFromKvsToIts(sLocalInitData.mServerInitParams->persistentStorageDelegate,
                                           sLocalInitData.mServerInitParams->operationalKeystore);
     if (err != CHIP_NO_ERROR)
     {
         LOG_ERR("MoveOperationalKeysFromKvsToIts() failed");
         return err;
     }
 #endif

     gExampleDeviceInfoProvider.SetStorageDelegate(&Server::GetInstance().GetPersistentStorage());
     chip::DeviceLayer::SetDeviceInfoProvider(&gExampleDeviceInfoProvider);

     ConfigurationMgr().LogDeviceConfig();
     PrintOnboardingCodes(RendezvousInformationFlags(RendezvousInformationFlag::kBLE));

     // Add CHIP event handler and start CHIP thread.
     // Note that all the initialization code should happen prior to this point
     // to avoid data races between the main and the CHIP threads.
     PlatformMgr().AddEventHandler(ChipEventHandler, 0);

     err = PlatformMgr().StartEventLoopTask();
     if (err != CHIP_NO_ERROR)
     {
         LOG_ERR("PlatformMgr().StartEventLoopTask() failed");
         return err;
     }

     return err;
 }

 CHIP_ERROR AppTask::StartApp()
 {
     ReturnErrorOnFailure(Init());

     AppEvent event{};

     while (true)
     {
         k_msgq_get(&sAppEventQueue, &event, K_FOREVER);
         DispatchEvent(event);
     }

     return CHIP_NO_ERROR;
 }

 void AppTask::ButtonPushHandler(const AppEvent & event)
 {
     if (event.Type == AppEventType::Button)
     {
         switch (event.ButtonEvent.PinNo)
         {
         case FUNCTION_BUTTON:
             Instance().StartTimer(Timer::Function, kFactoryResetTriggerTimeout);
             Instance().mFunction = FunctionEvent::SoftwareUpdate;
             break;
         case
 #if NUMBER_OF_BUTTONS == 2
             BLE_ADVERTISEMENT_START_AND_SWITCH_BUTTON:
             if (!ConnectivityMgr().IsBLEAdvertisingEnabled() && Server::GetInstance().GetFabricTable().FabricCount() == 0)
             {
                 break;
             }
 #else
             SWITCH_BUTTON:
 #endif
             LOG_INF("Button has been pressed, keep in this state for at least 500 ms to change light sensitivity of binded "
                     "lighting devices.");
             Instance().StartTimer(Timer::DimmerTrigger, kDimmerTriggeredTimeout);
             break;
         default:
             break;
         }
     }
 }

 void AppTask::ButtonReleaseHandler(const AppEvent & event)
 {
     if (event.Type == AppEventType::Button)
     {
         switch (event.ButtonEvent.PinNo)
         {
         case FUNCTION_BUTTON:
             if (Instance().mFunction == FunctionEvent::SoftwareUpdate)
             {
                 Instance().CancelTimer(Timer::Function);
                 Instance().mFunction = FunctionEvent::NoneSelected;

 #ifdef CONFIG_MCUMGR_TRANSPORT_BT
                 GetDFUOverSMP().StartServer();
                 UpdateStatusLED();
 #else
                 LOG_INF("Software update is disabled");
 #endif
             }
             else if (Instance().mFunction == FunctionEvent::FactoryReset)
             {
                 UpdateStatusLED();

                 Instance().CancelTimer(Timer::Function);
                 Instance().mFunction = FunctionEvent::NoneSelected;
                 LOG_INF("Factory Reset has been canceled");
             }
             break;
 #if NUMBER_OF_BUTTONS == 4
         case SWITCH_BUTTON:
 #else
         case BLE_ADVERTISEMENT_START_AND_SWITCH_BUTTON:
             if (!ConnectivityMgr().IsBLEAdvertisingEnabled() && Server::GetInstance().GetFabricTable().FabricCount() == 0)
             {
                 AppEvent buttonEvent;
                 buttonEvent.Type               = AppEventType::Button;
                 buttonEvent.ButtonEvent.PinNo  = BLE_ADVERTISEMENT_START_AND_SWITCH_BUTTON;
                 buttonEvent.ButtonEvent.Action = static_cast<uint8_t>(AppEventType::ButtonPushed);
                 buttonEvent.Handler            = StartBLEAdvertisementHandler;
                 PostEvent(buttonEvent);
                 break;
             }
 #endif
             if (!sWasDimmerTriggered)
             {
                 LightSwitch::GetInstance().InitiateActionSwitch(LightSwitch::Action::Toggle);
             }
             Instance().CancelTimer(Timer::Dimmer);
             Instance().CancelTimer(Timer::DimmerTrigger);
             sWasDimmerTriggered = false;
             break;
         default:
             break;
         }
     }
 }

 void AppTask::TimerEventHandler(const AppEvent & event)
 {
     if (event.Type == AppEventType::Timer)
     {
         switch (static_cast<Timer>(event.TimerEvent.TimerType))
         {
         case Timer::Function:
             if (Instance().mFunction == FunctionEvent::SoftwareUpdate)
             {
                 LOG_INF("Factory Reset has been triggered. Release button within %u ms to cancel.",
                         kFactoryResetCancelWindowTimeout);
                 Instance().StartTimer(Timer::Function, kFactoryResetCancelWindowTimeout);
                 Instance().mFunction = FunctionEvent::FactoryReset;

 #ifdef CONFIG_STATE_LEDS
                 // reset all LEDs to synchronize factory reset blinking
                 sStatusLED.Set(false);
                 sIdentifyLED.Set(false);
 #if NUMBER_OF_LEDS == 4
                 sFactoryResetLEDs.Set(false);
 #endif

                 sStatusLED.Blink(LedConsts::kBlinkRate_ms);
                 sIdentifyLED.Blink(LedConsts::kBlinkRate_ms);
 #if NUMBER_OF_LEDS == 4
                 sFactoryResetLEDs.Blink(LedConsts::kBlinkRate_ms);
 #endif
 #endif
             }
             else if (Instance().mFunction == FunctionEvent::FactoryReset)
             {
                 Instance().mFunction = FunctionEvent::NoneSelected;
                 LOG_INF("Factory Reset triggered");
                 chip::Server::GetInstance().ScheduleFactoryReset();
             }
             break;
         case Timer::DimmerTrigger:
             LOG_INF("Dimming started...");
             sWasDimmerTriggered = true;
             LightSwitch::GetInstance().InitiateActionSwitch(LightSwitch::Action::On);
             Instance().StartTimer(Timer::Dimmer, kDimmerInterval);
             Instance().CancelTimer(Timer::DimmerTrigger);
             break;
         case Timer::Dimmer:
             LightSwitch::GetInstance().DimmerChangeBrightness();
             break;
         default:
             break;
         }
     }
 }

 void AppTask::IdentifyStartHandler(Identify *)
 {
     AppEvent event;
     event.Type    = AppEventType::IdentifyStart;
     event.Handler = [](const AppEvent &) { sIdentifyLED.Blink(LedConsts::kIdentifyBlinkRate_ms); };
     PostEvent(event);
 }

 void AppTask::IdentifyStopHandler(Identify *)
 {
     AppEvent event;
     event.Type    = AppEventType::IdentifyStop;
     event.Handler = [](const AppEvent &) { sIdentifyLED.Set(false); };
     PostEvent(event);
 }

 void AppTask::StartBLEAdvertisementHandler(const AppEvent &)
 {
     if (Server::GetInstance().GetFabricTable().FabricCount() != 0)
     {
         LOG_INF("Matter service BLE advertising not started - device is already commissioned");
         return;
     }

     if (ConnectivityMgr().IsBLEAdvertisingEnabled())
     {
         LOG_INF("BLE advertising is already enabled");
         return;
     }

     if (Server::GetInstance().GetCommissioningWindowManager().OpenBasicCommissioningWindow() != CHIP_NO_ERROR)
     {
         LOG_ERR("OpenBasicCommissioningWindow() failed");
     }
 }

 void AppTask::ChipEventHandler(const ChipDeviceEvent * event, intptr_t /* arg */)
 {
     switch (event->Type)
     {
     case DeviceEventType::kCHIPoBLEAdvertisingChange:
         UpdateStatusLED();
 #ifdef CONFIG_CHIP_NFC_COMMISSIONING
         if (event->CHIPoBLEAdvertisingChange.Result == kActivity_Started)
         {
             if (NFCMgr().IsTagEmulationStarted())
             {
                 LOG_INF("NFC Tag emulation is already started");
             }
             else
             {
                 ShareQRCodeOverNFC(chip::RendezvousInformationFlags(chip::RendezvousInformationFlag::kBLE));
             }
         }
         else if (event->CHIPoBLEAdvertisingChange.Result == kActivity_Stopped)
         {
             NFCMgr().StopTagEmulation();
         }
 #endif
         sHaveBLEConnections = ConnectivityMgr().NumBLEConnections() != 0;
         UpdateStatusLED();
         break;
 #if defined(CONFIG_NET_L2_OPENTHREAD)
     case DeviceEventType::kDnssdInitialized:
 #if CONFIG_CHIP_OTA_REQUESTOR
         InitBasicOTARequestor();
 #endif // CONFIG_CHIP_OTA_REQUESTOR
         break;
     case DeviceEventType::kThreadStateChange:
         sIsNetworkProvisioned = ConnectivityMgr().IsThreadProvisioned();
         sIsNetworkEnabled     = ConnectivityMgr().IsThreadEnabled();
 #elif defined(CONFIG_CHIP_WIFI)
     case DeviceEventType::kWiFiConnectivityChange:
         sIsNetworkProvisioned = ConnectivityMgr().IsWiFiStationProvisioned();
         sIsNetworkEnabled     = ConnectivityMgr().IsWiFiStationEnabled();
 #if CONFIG_CHIP_OTA_REQUESTOR
         if (event->WiFiConnectivityChange.Result == kConnectivity_Established)
         {
             InitBasicOTARequestor();
         }
 #endif // CONFIG_CHIP_OTA_REQUESTOR
 #endif
         UpdateStatusLED();
         break;
     default:
         break;
     }
 }

 void AppTask::UpdateStatusLED()
 {
 #ifdef CONFIG_STATE_LEDS
 #if NUMBER_OF_LEDS == 4
     sFactoryResetLEDs.Set(false);
 #endif

     // Update the status LED.
     //
     // If IPv6 network and service provisioned, keep the LED on constantly.
     //
     // If the system has BLE connection(s) up till the stage above, THEN blink the LED at an even
     // rate of 100ms.
     //
     // Otherwise, blink the LED for a very short time.
     if (sIsNetworkProvisioned && sIsNetworkEnabled)
     {
         sStatusLED.Set(true);
     }
     else if (sHaveBLEConnections)
     {
         sStatusLED.Blink(LedConsts::StatusLed::Unprovisioned::kOn_ms, LedConsts::StatusLed::Unprovisioned::kOff_ms);
     }
     else
     {
         sStatusLED.Blink(LedConsts::StatusLed::Provisioned::kOn_ms, LedConsts::StatusLed::Provisioned::kOff_ms);
     }
 #endif
 }

 void AppTask::ButtonEventHandler(uint32_t buttonState, uint32_t hasChanged)
 {
     AppEvent buttonEvent;
     buttonEvent.Type = AppEventType::Button;

     if (FUNCTION_BUTTON_MASK & buttonState & hasChanged)
     {
         buttonEvent.ButtonEvent.PinNo  = FUNCTION_BUTTON;
         buttonEvent.ButtonEvent.Action = static_cast<uint8_t>(AppEventType::ButtonPushed);
         buttonEvent.Handler            = ButtonPushHandler;
         PostEvent(buttonEvent);
     }
     else if (FUNCTION_BUTTON_MASK & hasChanged)
     {
         buttonEvent.ButtonEvent.PinNo  = FUNCTION_BUTTON;
         buttonEvent.ButtonEvent.Action = static_cast<uint8_t>(AppEventType::ButtonReleased);
         buttonEvent.Handler            = ButtonReleaseHandler;
         PostEvent(buttonEvent);
     }

 #if NUMBER_OF_BUTTONS == 2
     uint32_t buttonMask           = BLE_ADVERTISEMENT_START_AND_SWITCH_BUTTON_MASK;
     buttonEvent.ButtonEvent.PinNo = BLE_ADVERTISEMENT_START_AND_SWITCH_BUTTON;
 #else
     uint32_t buttonMask           = SWITCH_BUTTON_MASK;
     buttonEvent.ButtonEvent.PinNo = SWITCH_BUTTON;
 #endif

     if (buttonMask & buttonState & hasChanged)
     {
         buttonEvent.ButtonEvent.Action = static_cast<uint8_t>(AppEventType::ButtonPushed);
         buttonEvent.Handler            = ButtonPushHandler;
         PostEvent(buttonEvent);
     }
     else if (buttonMask & hasChanged)
     {
         buttonEvent.ButtonEvent.Action = static_cast<uint8_t>(AppEventType::ButtonReleased);
         buttonEvent.Handler            = ButtonReleaseHandler;
         PostEvent(buttonEvent);
     }

 #if NUMBER_OF_BUTTONS == 4
     if (BLE_ADVERTISEMENT_START_BUTTON_MASK & hasChanged & buttonState)
     {
         buttonEvent.ButtonEvent.PinNo  = BLE_ADVERTISEMENT_START_BUTTON;
         buttonEvent.ButtonEvent.Action = static_cast<uint8_t>(AppEventType::ButtonPushed);
         buttonEvent.Handler            = StartBLEAdvertisementHandler;
         PostEvent(buttonEvent);
     }
 #endif
 }

 void AppTask::StartTimer(Timer timer, uint32_t timeoutMs)
 {
     switch (timer)
     {
     case Timer::Function:
         k_timer_start(&sFunctionTimer, K_MSEC(timeoutMs), K_NO_WAIT);
         break;
     case Timer::DimmerTrigger:
         k_timer_start(&sDimmerPressKeyTimer, K_MSEC(timeoutMs), K_NO_WAIT);
         break;
     case Timer::Dimmer:
         k_timer_start(&sDimmerTimer, K_MSEC(timeoutMs), K_MSEC(timeoutMs));
         break;
     default:
         break;
     }
 }

 void AppTask::CancelTimer(Timer timer)
 {
     switch (timer)
     {
     case Timer::Function:
         k_timer_stop(&sFunctionTimer);
         break;
     case Timer::DimmerTrigger:
         k_timer_stop(&sDimmerPressKeyTimer);
         break;
     case Timer::Dimmer:
         k_timer_stop(&sDimmerTimer);
         break;
     default:
         break;
     }
 }

 void AppTask::UpdateLedStateEventHandler(const AppEvent & event)
 {
     if (event.Type == AppEventType::UpdateLedState)
     {
         event.UpdateLedStateEvent.LedWidget->UpdateState();
     }
 }

 void AppTask::LEDStateUpdateHandler(LEDWidget & aLedWidget)
 {
     AppEvent event;
     event.Type                          = AppEventType::UpdateLedState;
     event.Handler                       = UpdateLedStateEventHandler;
     event.UpdateLedStateEvent.LedWidget = &aLedWidget;
     PostEvent(event);
 }

 void AppTask::FunctionTimerTimeoutCallback(k_timer * timer)
 {
     if (!timer)
     {
         return;
     }

     AppEvent event;
     if (timer == &sFunctionTimer)
     {
         event.Type                 = AppEventType::Timer;
         event.TimerEvent.TimerType = (uint8_t) Timer::Function;
         event.TimerEvent.Context   = k_timer_user_data_get(timer);
         event.Handler              = TimerEventHandler;
         PostEvent(event);
     }
     if (timer == &sDimmerPressKeyTimer)
     {
         event.Type                 = AppEventType::Timer;
         event.TimerEvent.TimerType = (uint8_t) Timer::DimmerTrigger;
         event.TimerEvent.Context   = k_timer_user_data_get(timer);
         event.Handler              = TimerEventHandler;
         PostEvent(event);
     }
     if (timer == &sDimmerTimer)
     {
         event.Type                 = AppEventType::Timer;
         event.TimerEvent.TimerType = (uint8_t) Timer::Dimmer;
         event.TimerEvent.Context   = k_timer_user_data_get(timer);
         event.Handler              = TimerEventHandler;
         PostEvent(event);
     }
 }

 void AppTask::PostEvent(const AppEvent & event)
 {
     if (k_msgq_put(&sAppEventQueue, &event, K_NO_WAIT) != 0)
     {
         LOG_INF("Failed to post event to app task event queue");
     }
 }

 void AppTask::DispatchEvent(const AppEvent & event)
 {
     if (event.Handler)
     {
         event.Handler(event);
     }
     else
     {
         LOG_INF("Event received with no handler. Dropping event.");
     }
 }
	/*
	*
	* Copyright (c) 2022 Project CHIP Authors
	* All rights reserved.
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	#include "AppTask.h"
	#include "AppConfig.h"
	#include "BoardUtil.h"
	#include "FabricTableDelegate.h"
	#include "LEDUtil.h"
	#include "LightSwitch.h"

	#include <DeviceInfoProviderImpl.h>
	#include <app/TestEventTriggerDelegate.h>
	#include <app/clusters/identify-server/identify-server.h>
	#include <app/clusters/ota-requestor/OTATestEventTriggerHandler.h>
	#include <app/server/OnboardingCodesUtil.h>
	#include <app/server/Server.h>
	#include <credentials/DeviceAttestationCredsProvider.h>
	#include <credentials/examples/DeviceAttestationCredsExample.h>
	#include <lib/support/CHIPMem.h>
	#include <lib/support/CodeUtils.h>
	#include <lib/support/SafeInt.h>
	#include <platform/CHIPDeviceLayer.h>
	#include <system/SystemError.h>

	#ifdef CONFIG_CHIP_WIFI
	#include <app/clusters/network-commissioning/network-commissioning.h>
	#include <platform/nrfconnect/wifi/NrfWiFiDriver.h>
	#endif

	#ifdef CONFIG_CHIP_OTA_REQUESTOR
	#include "OTAUtil.h"
	#endif

	#ifdef CONFIG_CHIP_CRYPTO_PSA
	#include <crypto/PSAOperationalKeystore.h>
	#ifdef CONFIG_CHIP_MIGRATE_OPERATIONAL_KEYS_TO_ITS
	#include "MigrationManager.h"
	#endif
	#endif

	#include <dk_buttons_and_leds.h>
	#include <zephyr/kernel.h>
	#include <zephyr/logging/log.h>

	LOG_MODULE_DECLARE(app, CONFIG_CHIP_APP_LOG_LEVEL);

	using namespace ::chip;
	using namespace ::chip::app;
	using namespace ::chip::Credentials;
	using namespace ::chip::DeviceLayer;

	namespace {
	constexpr EndpointId kLightDimmerSwitchEndpointId = 1;
	constexpr EndpointId kLightGenericSwitchEndpointId = 2;
	constexpr EndpointId kLightEndpointId = 1;

	constexpr uint32_t kFactoryResetTriggerTimeout = 3000;
	constexpr uint32_t kFactoryResetCancelWindowTimeout = 3000;
	constexpr uint32_t kDimmerTriggeredTimeout = 500;
	constexpr uint32_t kDimmerInterval = 300;
	constexpr size_t kAppEventQueueSize = 10;

	K_MSGQ_DEFINE(sAppEventQueue, sizeof(AppEvent), kAppEventQueueSize, alignof(AppEvent));

	Identify sIdentify = { kLightEndpointId, AppTask::IdentifyStartHandler, AppTask::IdentifyStopHandler,
	Clusters::Identify::IdentifyTypeEnum::kVisibleIndicator };

	// NOTE! This key is for test/certification only and should not be available in production devices!
	// If CONFIG_CHIP_FACTORY_DATA is enabled, this value is read from the factory data.
	uint8_t sTestEventTriggerEnableKey[TestEventTriggerDelegate::kEnableKeyLength] = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
	0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff };

	LEDWidget sStatusLED;
	LEDWidget sIdentifyLED;
	#if NUMBER_OF_LEDS == 4
	FactoryResetLEDsWrapper<2> sFactoryResetLEDs{ { FACTORY_RESET_SIGNAL_LED, FACTORY_RESET_SIGNAL_LED1 } };
	#endif

	bool sIsNetworkProvisioned = false;
	bool sIsNetworkEnabled = false;
	bool sHaveBLEConnections = false;
	bool sWasDimmerTriggered = false;

	k_timer sFunctionTimer;
	k_timer sDimmerPressKeyTimer;
	k_timer sDimmerTimer;

	chip::DeviceLayer::DeviceInfoProviderImpl gExampleDeviceInfoProvider;

	#ifdef CONFIG_CHIP_CRYPTO_PSA
	chip::Crypto::PSAOperationalKeystore sPSAOperationalKeystore{};
	#endif
	} // namespace

	namespace LedConsts {
	constexpr uint32_t kBlinkRate_ms{ 500 };
	constexpr uint32_t kIdentifyBlinkRate_ms{ 500 };

	namespace StatusLed {
	namespace Unprovisioned {
	constexpr uint32_t kOn_ms{ 100 };
	constexpr uint32_t kOff_ms{ kOn_ms };
	} // namespace Unprovisioned
	namespace Provisioned {
	constexpr uint32_t kOn_ms{ 50 };
	constexpr uint32_t kOff_ms{ 950 };
	} // namespace Provisioned

	} // namespace StatusLed
	} // namespace LedConsts

	#ifdef CONFIG_CHIP_WIFI
	app::Clusters::NetworkCommissioning::Instance sWiFiCommissioningInstance(0, &(NetworkCommissioning::NrfWiFiDriver::Instance()));
	#endif

	CHIP_ERROR AppTask::Init()
	{
	// Initialize CHIP
	LOG_INF("Init CHIP stack");

	CHIP_ERROR err = Platform::MemoryInit();
	if (err != CHIP_NO_ERROR)
	{
	LOG_ERR("Platform::MemoryInit() failed");
	return err;
	}

	err = PlatformMgr().InitChipStack();
	if (err != CHIP_NO_ERROR)
	{
	LOG_ERR("PlatformMgr().InitChipStack() failed");
	return err;
	}

	#if defined(CONFIG_NET_L2_OPENTHREAD)
	err = ThreadStackMgr().InitThreadStack();
	if (err != CHIP_NO_ERROR)
	{
	LOG_ERR("ThreadStackMgr().InitThreadStack() failed: %s", ErrorStr(err));
	return err;
	}

	#ifdef CONFIG_OPENTHREAD_MTD_SED
	err = ConnectivityMgr().SetThreadDeviceType(ConnectivityManager::kThreadDeviceType_SleepyEndDevice);
	#else
	err = ConnectivityMgr().SetThreadDeviceType(ConnectivityManager::kThreadDeviceType_MinimalEndDevice);
	#endif
	if (err != CHIP_NO_ERROR)
	{
	LOG_ERR("ConnectivityMgr().SetThreadDeviceType() failed: %s", ErrorStr(err));
	return err;
	}
	#elif defined(CONFIG_CHIP_WIFI)
	sWiFiCommissioningInstance.Init();
	#else
	return CHIP_ERROR_INTERNAL;
	#endif

	LightSwitch::GetInstance().Init(kLightDimmerSwitchEndpointId, kLightGenericSwitchEndpointId);

	// Initialize UI components
	LEDWidget::InitGpio();
	LEDWidget::SetStateUpdateCallback(LEDStateUpdateHandler);

	sStatusLED.Init(SYSTEM_STATE_LED);
	sIdentifyLED.Init(IDENTIFY_LED);
	UpdateStatusLED();

	int ret = dk_buttons_init(ButtonEventHandler);
	if (ret)
	{
	LOG_ERR("dk_buttons_init() failed");
	return System::MapErrorZephyr(ret);
	}

	#ifdef CONFIG_CHIP_OTA_REQUESTOR
	/* OTA image confirmation must be done before the factory data init. */
	OtaConfirmNewImage();
	#endif

	// Initialize Timers
	k_timer_init(&sFunctionTimer, AppTask::FunctionTimerTimeoutCallback, nullptr);
	k_timer_init(&sDimmerPressKeyTimer, AppTask::FunctionTimerTimeoutCallback, nullptr);
	k_timer_init(&sDimmerTimer, AppTask::FunctionTimerTimeoutCallback, nullptr);
	k_timer_user_data_set(&sDimmerTimer, this);
	k_timer_user_data_set(&sDimmerPressKeyTimer, this);
	k_timer_user_data_set(&sFunctionTimer, this);

	// Initialize DFU
	#ifdef CONFIG_MCUMGR_TRANSPORT_BT
	GetDFUOverSMP().Init();
	GetDFUOverSMP().ConfirmNewImage();
	#endif

	// Print initial configs
	#if CONFIG_CHIP_FACTORY_DATA
	ReturnErrorOnFailure(mFactoryDataProvider.Init());
	SetDeviceInstanceInfoProvider(&mFactoryDataProvider);
	SetDeviceAttestationCredentialsProvider(&mFactoryDataProvider);
	SetCommissionableDataProvider(&mFactoryDataProvider);
	// Read EnableKey from the factory data.
	MutableByteSpan enableKey(sTestEventTriggerEnableKey);
	err = mFactoryDataProvider.GetEnableKey(enableKey);
	if (err != CHIP_NO_ERROR)
	{
	LOG_ERR("mFactoryDataProvider.GetEnableKey() failed. Could not delegate a test event trigger");
	memset(sTestEventTriggerEnableKey, 0, sizeof(sTestEventTriggerEnableKey));
	}
	#else
	SetDeviceInstanceInfoProvider(&DeviceInstanceInfoProviderMgrImpl());
	SetDeviceAttestationCredentialsProvider(Examples::GetExampleDACProvider());
	#endif

	static CommonCaseDeviceServerInitParams initParams;
	static SimpleTestEventTriggerDelegate sTestEventTriggerDelegate{};
	static OTATestEventTriggerHandler sOtaTestEventTriggerHandler{};
	VerifyOrDie(sTestEventTriggerDelegate.Init(ByteSpan(sTestEventTriggerEnableKey)) == CHIP_NO_ERROR);
	VerifyOrDie(sTestEventTriggerDelegate.AddHandler(&sOtaTestEventTriggerHandler) == CHIP_NO_ERROR);
	#ifdef CONFIG_CHIP_CRYPTO_PSA
	initParams.operationalKeystore = &sPSAOperationalKeystore;
	#endif
	(void) initParams.InitializeStaticResourcesBeforeServerInit();
	initParams.testEventTriggerDelegate = &sTestEventTriggerDelegate;
	ReturnErrorOnFailure(chip::Server::GetInstance().Init(initParams));
	AppFabricTableDelegate::Init();

	#ifdef CONFIG_CHIP_MIGRATE_OPERATIONAL_KEYS_TO_ITS
	err = MoveOperationalKeysFromKvsToIts(sLocalInitData.mServerInitParams->persistentStorageDelegate,
	sLocalInitData.mServerInitParams->operationalKeystore);
	if (err != CHIP_NO_ERROR)
	{
	LOG_ERR("MoveOperationalKeysFromKvsToIts() failed");
	return err;
	}
	#endif

	gExampleDeviceInfoProvider.SetStorageDelegate(&Server::GetInstance().GetPersistentStorage());
	chip::DeviceLayer::SetDeviceInfoProvider(&gExampleDeviceInfoProvider);

	ConfigurationMgr().LogDeviceConfig();
	PrintOnboardingCodes(RendezvousInformationFlags(RendezvousInformationFlag::kBLE));

	// Add CHIP event handler and start CHIP thread.
	// Note that all the initialization code should happen prior to this point
	// to avoid data races between the main and the CHIP threads.
	PlatformMgr().AddEventHandler(ChipEventHandler, 0);

	err = PlatformMgr().StartEventLoopTask();
	if (err != CHIP_NO_ERROR)
	{
	LOG_ERR("PlatformMgr().StartEventLoopTask() failed");
	return err;
	}

	return err;
	}

	CHIP_ERROR AppTask::StartApp()
	{
	ReturnErrorOnFailure(Init());

	AppEvent event{};

	while (true)
	{
	k_msgq_get(&sAppEventQueue, &event, K_FOREVER);
	DispatchEvent(event);
	}

	return CHIP_NO_ERROR;
	}

	void AppTask::ButtonPushHandler(const AppEvent & event)
	{
	if (event.Type == AppEventType::Button)
	{
	switch (event.ButtonEvent.PinNo)
	{
	case FUNCTION_BUTTON:
	Instance().StartTimer(Timer::Function, kFactoryResetTriggerTimeout);
	Instance().mFunction = FunctionEvent::SoftwareUpdate;
	break;
	case
	#if NUMBER_OF_BUTTONS == 2
	BLE_ADVERTISEMENT_START_AND_SWITCH_BUTTON:
	if (!ConnectivityMgr().IsBLEAdvertisingEnabled() && Server::GetInstance().GetFabricTable().FabricCount() == 0)
	{
	break;
	}
	#else
	SWITCH_BUTTON:
	#endif
	LOG_INF("Button has been pressed, keep in this state for at least 500 ms to change light sensitivity of binded "
	"lighting devices.");
	Instance().StartTimer(Timer::DimmerTrigger, kDimmerTriggeredTimeout);
	break;
	default:
	break;
	}
	}
	}

	void AppTask::ButtonReleaseHandler(const AppEvent & event)
	{
	if (event.Type == AppEventType::Button)
	{
	switch (event.ButtonEvent.PinNo)
	{
	case FUNCTION_BUTTON:
	if (Instance().mFunction == FunctionEvent::SoftwareUpdate)
	{
	Instance().CancelTimer(Timer::Function);
	Instance().mFunction = FunctionEvent::NoneSelected;

	#ifdef CONFIG_MCUMGR_TRANSPORT_BT
	GetDFUOverSMP().StartServer();
	UpdateStatusLED();
	#else
	LOG_INF("Software update is disabled");
	#endif
	}
	else if (Instance().mFunction == FunctionEvent::FactoryReset)
	{
	UpdateStatusLED();

	Instance().CancelTimer(Timer::Function);
	Instance().mFunction = FunctionEvent::NoneSelected;
	LOG_INF("Factory Reset has been canceled");
	}
	break;
	#if NUMBER_OF_BUTTONS == 4
	case SWITCH_BUTTON:
	#else
	case BLE_ADVERTISEMENT_START_AND_SWITCH_BUTTON:
	if (!ConnectivityMgr().IsBLEAdvertisingEnabled() && Server::GetInstance().GetFabricTable().FabricCount() == 0)
	{
	AppEvent buttonEvent;
	buttonEvent.Type = AppEventType::Button;
	buttonEvent.ButtonEvent.PinNo = BLE_ADVERTISEMENT_START_AND_SWITCH_BUTTON;
	buttonEvent.ButtonEvent.Action = static_cast<uint8_t>(AppEventType::ButtonPushed);
	buttonEvent.Handler = StartBLEAdvertisementHandler;
	PostEvent(buttonEvent);
	break;
	}
	#endif
	if (!sWasDimmerTriggered)
	{
	LightSwitch::GetInstance().InitiateActionSwitch(LightSwitch::Action::Toggle);
	}
	Instance().CancelTimer(Timer::Dimmer);
	Instance().CancelTimer(Timer::DimmerTrigger);
	sWasDimmerTriggered = false;
	break;
	default:
	break;
	}
	}
	}

	void AppTask::TimerEventHandler(const AppEvent & event)
	{
	if (event.Type == AppEventType::Timer)
	{
	switch (static_cast<Timer>(event.TimerEvent.TimerType))
	{
	case Timer::Function:
	if (Instance().mFunction == FunctionEvent::SoftwareUpdate)
	{
	LOG_INF("Factory Reset has been triggered. Release button within %u ms to cancel.",
	kFactoryResetCancelWindowTimeout);
	Instance().StartTimer(Timer::Function, kFactoryResetCancelWindowTimeout);
	Instance().mFunction = FunctionEvent::FactoryReset;

	#ifdef CONFIG_STATE_LEDS
	// reset all LEDs to synchronize factory reset blinking
	sStatusLED.Set(false);
	sIdentifyLED.Set(false);
	#if NUMBER_OF_LEDS == 4
	sFactoryResetLEDs.Set(false);
	#endif

	sStatusLED.Blink(LedConsts::kBlinkRate_ms);
	sIdentifyLED.Blink(LedConsts::kBlinkRate_ms);
	#if NUMBER_OF_LEDS == 4
	sFactoryResetLEDs.Blink(LedConsts::kBlinkRate_ms);
	#endif
	#endif
	}
	else if (Instance().mFunction == FunctionEvent::FactoryReset)
	{
	Instance().mFunction = FunctionEvent::NoneSelected;
	LOG_INF("Factory Reset triggered");
	chip::Server::GetInstance().ScheduleFactoryReset();
	}
	break;
	case Timer::DimmerTrigger:
	LOG_INF("Dimming started...");
	sWasDimmerTriggered = true;
	LightSwitch::GetInstance().InitiateActionSwitch(LightSwitch::Action::On);
	Instance().StartTimer(Timer::Dimmer, kDimmerInterval);
	Instance().CancelTimer(Timer::DimmerTrigger);
	break;
	case Timer::Dimmer:
	LightSwitch::GetInstance().DimmerChangeBrightness();
	break;
	default:
	break;
	}
	}
	}

	void AppTask::IdentifyStartHandler(Identify *)
	{
	AppEvent event;
	event.Type = AppEventType::IdentifyStart;
	event.Handler = [](const AppEvent &) { sIdentifyLED.Blink(LedConsts::kIdentifyBlinkRate_ms); };
	PostEvent(event);
	}

	void AppTask::IdentifyStopHandler(Identify *)
	{
	AppEvent event;
	event.Type = AppEventType::IdentifyStop;
	event.Handler = [](const AppEvent &) { sIdentifyLED.Set(false); };
	PostEvent(event);
	}

	void AppTask::StartBLEAdvertisementHandler(const AppEvent &)
	{
	if (Server::GetInstance().GetFabricTable().FabricCount() != 0)
	{
	LOG_INF("Matter service BLE advertising not started - device is already commissioned");
	return;
	}

	if (ConnectivityMgr().IsBLEAdvertisingEnabled())
	{
	LOG_INF("BLE advertising is already enabled");
	return;
	}

	if (Server::GetInstance().GetCommissioningWindowManager().OpenBasicCommissioningWindow() != CHIP_NO_ERROR)
	{
	LOG_ERR("OpenBasicCommissioningWindow() failed");
	}
	}

	void AppTask::ChipEventHandler(const ChipDeviceEvent * event, intptr_t /* arg */)
	{
	switch (event->Type)
	{
	case DeviceEventType::kCHIPoBLEAdvertisingChange:
	UpdateStatusLED();
	#ifdef CONFIG_CHIP_NFC_COMMISSIONING
	if (event->CHIPoBLEAdvertisingChange.Result == kActivity_Started)
	{
	if (NFCMgr().IsTagEmulationStarted())
	{
	LOG_INF("NFC Tag emulation is already started");
	}
	else
	{
	ShareQRCodeOverNFC(chip::RendezvousInformationFlags(chip::RendezvousInformationFlag::kBLE));
	}
	}
	else if (event->CHIPoBLEAdvertisingChange.Result == kActivity_Stopped)
	{
	NFCMgr().StopTagEmulation();
	}
	#endif
	sHaveBLEConnections = ConnectivityMgr().NumBLEConnections() != 0;
	UpdateStatusLED();
	break;
	#if defined(CONFIG_NET_L2_OPENTHREAD)
	case DeviceEventType::kDnssdInitialized:
	#if CONFIG_CHIP_OTA_REQUESTOR
	InitBasicOTARequestor();
	#endif // CONFIG_CHIP_OTA_REQUESTOR
	break;
	case DeviceEventType::kThreadStateChange:
	sIsNetworkProvisioned = ConnectivityMgr().IsThreadProvisioned();
	sIsNetworkEnabled = ConnectivityMgr().IsThreadEnabled();
	#elif defined(CONFIG_CHIP_WIFI)
	case DeviceEventType::kWiFiConnectivityChange:
	sIsNetworkProvisioned = ConnectivityMgr().IsWiFiStationProvisioned();
	sIsNetworkEnabled = ConnectivityMgr().IsWiFiStationEnabled();
	#if CONFIG_CHIP_OTA_REQUESTOR
	if (event->WiFiConnectivityChange.Result == kConnectivity_Established)
	{
	InitBasicOTARequestor();
	}
	#endif // CONFIG_CHIP_OTA_REQUESTOR
	#endif
	UpdateStatusLED();
	break;
	default:
	break;
	}
	}

	void AppTask::UpdateStatusLED()
	{
	#ifdef CONFIG_STATE_LEDS
	#if NUMBER_OF_LEDS == 4
	sFactoryResetLEDs.Set(false);
	#endif

	// Update the status LED.
	//
	// If IPv6 network and service provisioned, keep the LED on constantly.
	//
	// If the system has BLE connection(s) up till the stage above, THEN blink the LED at an even
	// rate of 100ms.
	//
	// Otherwise, blink the LED for a very short time.
	if (sIsNetworkProvisioned && sIsNetworkEnabled)
	{
	sStatusLED.Set(true);
	}
	else if (sHaveBLEConnections)
	{
	sStatusLED.Blink(LedConsts::StatusLed::Unprovisioned::kOn_ms, LedConsts::StatusLed::Unprovisioned::kOff_ms);
	}
	else
	{
	sStatusLED.Blink(LedConsts::StatusLed::Provisioned::kOn_ms, LedConsts::StatusLed::Provisioned::kOff_ms);
	}
	#endif
	}

	void AppTask::ButtonEventHandler(uint32_t buttonState, uint32_t hasChanged)
	{
	AppEvent buttonEvent;
	buttonEvent.Type = AppEventType::Button;

	if (FUNCTION_BUTTON_MASK & buttonState & hasChanged)
	{
	buttonEvent.ButtonEvent.PinNo = FUNCTION_BUTTON;
	buttonEvent.ButtonEvent.Action = static_cast<uint8_t>(AppEventType::ButtonPushed);
	buttonEvent.Handler = ButtonPushHandler;
	PostEvent(buttonEvent);
	}
	else if (FUNCTION_BUTTON_MASK & hasChanged)
	{
	buttonEvent.ButtonEvent.PinNo = FUNCTION_BUTTON;
	buttonEvent.ButtonEvent.Action = static_cast<uint8_t>(AppEventType::ButtonReleased);
	buttonEvent.Handler = ButtonReleaseHandler;
	PostEvent(buttonEvent);
	}

	#if NUMBER_OF_BUTTONS == 2
	uint32_t buttonMask = BLE_ADVERTISEMENT_START_AND_SWITCH_BUTTON_MASK;
	buttonEvent.ButtonEvent.PinNo = BLE_ADVERTISEMENT_START_AND_SWITCH_BUTTON;
	#else
	uint32_t buttonMask = SWITCH_BUTTON_MASK;
	buttonEvent.ButtonEvent.PinNo = SWITCH_BUTTON;
	#endif

	if (buttonMask & buttonState & hasChanged)
	{
	buttonEvent.ButtonEvent.Action = static_cast<uint8_t>(AppEventType::ButtonPushed);
	buttonEvent.Handler = ButtonPushHandler;
	PostEvent(buttonEvent);
	}
	else if (buttonMask & hasChanged)
	{
	buttonEvent.ButtonEvent.Action = static_cast<uint8_t>(AppEventType::ButtonReleased);
	buttonEvent.Handler = ButtonReleaseHandler;
	PostEvent(buttonEvent);
	}

	#if NUMBER_OF_BUTTONS == 4
	if (BLE_ADVERTISEMENT_START_BUTTON_MASK & hasChanged & buttonState)
	{
	buttonEvent.ButtonEvent.PinNo = BLE_ADVERTISEMENT_START_BUTTON;
	buttonEvent.ButtonEvent.Action = static_cast<uint8_t>(AppEventType::ButtonPushed);
	buttonEvent.Handler = StartBLEAdvertisementHandler;
	PostEvent(buttonEvent);
	}
	#endif
	}

	void AppTask::StartTimer(Timer timer, uint32_t timeoutMs)
	{
	switch (timer)
	{
	case Timer::Function:
	k_timer_start(&sFunctionTimer, K_MSEC(timeoutMs), K_NO_WAIT);
	break;
	case Timer::DimmerTrigger:
	k_timer_start(&sDimmerPressKeyTimer, K_MSEC(timeoutMs), K_NO_WAIT);
	break;
	case Timer::Dimmer:
	k_timer_start(&sDimmerTimer, K_MSEC(timeoutMs), K_MSEC(timeoutMs));
	break;
	default:
	break;
	}
	}

	void AppTask::CancelTimer(Timer timer)
	{
	switch (timer)
	{
	case Timer::Function:
	k_timer_stop(&sFunctionTimer);
	break;
	case Timer::DimmerTrigger:
	k_timer_stop(&sDimmerPressKeyTimer);
	break;
	case Timer::Dimmer:
	k_timer_stop(&sDimmerTimer);
	break;
	default:
	break;
	}
	}

	void AppTask::UpdateLedStateEventHandler(const AppEvent & event)
	{
	if (event.Type == AppEventType::UpdateLedState)
	{
	event.UpdateLedStateEvent.LedWidget->UpdateState();
	}
	}

	void AppTask::LEDStateUpdateHandler(LEDWidget & aLedWidget)
	{
	AppEvent event;
	event.Type = AppEventType::UpdateLedState;
	event.Handler = UpdateLedStateEventHandler;
	event.UpdateLedStateEvent.LedWidget = &aLedWidget;
	PostEvent(event);
	}

	void AppTask::FunctionTimerTimeoutCallback(k_timer * timer)
	{
	if (!timer)
	{
	return;
	}

	AppEvent event;
	if (timer == &sFunctionTimer)
	{
	event.Type = AppEventType::Timer;
	event.TimerEvent.TimerType = (uint8_t) Timer::Function;
	event.TimerEvent.Context = k_timer_user_data_get(timer);
	event.Handler = TimerEventHandler;
	PostEvent(event);
	}
	if (timer == &sDimmerPressKeyTimer)
	{
	event.Type = AppEventType::Timer;
	event.TimerEvent.TimerType = (uint8_t) Timer::DimmerTrigger;
	event.TimerEvent.Context = k_timer_user_data_get(timer);
	event.Handler = TimerEventHandler;
	PostEvent(event);
	}
	if (timer == &sDimmerTimer)
	{
	event.Type = AppEventType::Timer;
	event.TimerEvent.TimerType = (uint8_t) Timer::Dimmer;
	event.TimerEvent.Context = k_timer_user_data_get(timer);
	event.Handler = TimerEventHandler;
	PostEvent(event);
	}
	}

	void AppTask::PostEvent(const AppEvent & event)
	{
	if (k_msgq_put(&sAppEventQueue, &event, K_NO_WAIT) != 0)
	{
	LOG_INF("Failed to post event to app task event queue");
	}
	}

	void AppTask::DispatchEvent(const AppEvent & event)
	{
	if (event.Handler)
	{
	event.Handler(event);
	}
	else
	{
	LOG_INF("Event received with no handler. Dropping event.");
	}
	}