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

 /*
  *    Copyright (c) 2024 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 "AppEvent.h"
 #include "FabricTableDelegate.h"
 #include "LEDUtil.h"

 #include <DeviceInfoProviderImpl.h>

 #include <app/server/OnboardingCodesUtil.h>
 #include <app/server/Server.h>

 #include <app/TestEventTriggerDelegate.h>
 #include <app/clusters/identify-server/identify-server.h>
 #include <app/clusters/ota-requestor/OTATestEventTriggerHandler.h>
 #include <app/util/attribute-storage.h>

 #include <credentials/DeviceAttestationCredsProvider.h>
 #include <credentials/examples/DeviceAttestationCredsExample.h>

 #if 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 uint32_t kFactoryResetTriggerTimeout      = 3000;
 constexpr uint32_t kFactoryResetCancelWindowTimeout = 3000;
 constexpr size_t kAppEventQueueSize                 = 10;
 constexpr EndpointId kIdentifyEndpointId            = 1;

 // 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 };

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

 chip::DeviceLayer::DeviceInfoProviderImpl gExampleDeviceInfoProvider;

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

 LEDWidget sStatusLED;
 LEDWidget sIdentifyLED;
 FactoryResetLEDsWrapper<2> sFactoryResetLEDs{ { FACTORY_RESET_SIGNAL_LED, FACTORY_RESET_SIGNAL_LED1 } };

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

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

 #ifdef CONFIG_CHIP_ICD_DSLS_SUPPORT
 bool sIsSitModeRequested = false;
 #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

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

     CHIP_ERROR err = chip::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");
         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");
         return err;
     }
 #else
     return CHIP_ERROR_INTERNAL;
 #endif // CONFIG_NET_L2_OPENTHREAD

     // Initialize LEDs
     LEDWidget::InitGpio();
     LEDWidget::SetStateUpdateCallback(LEDStateUpdateHandler);

     sStatusLED.Init(SYSTEM_STATE_LED);
     sIdentifyLED.Init(IDENTIFY_STATE_LED);
     sIdentifyLED.Set(false);

     UpdateStatusLED();

     // Initialize buttons
     auto ret = dk_buttons_init(ButtonEventHandler);
     if (ret)
     {
         LOG_ERR("dk_buttons_init() failed");
         return chip::System::MapErrorZephyr(ret);
     }

     // Initialize timer user data
     k_timer_init(&sFunctionTimer, &AppTask::FunctionTimerTimeoutCallback, nullptr);
     k_timer_user_data_set(&sFunctionTimer, this);

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

     // Initialize CHIP server
 #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(chip::RendezvousInformationFlag(chip::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;
 }

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

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

     if (FUNCTION_BUTTON_MASK & hasChanged)
     {
         button_event.ButtonEvent.PinNo = FUNCTION_BUTTON;
         button_event.ButtonEvent.Action =
             static_cast<uint8_t>((FUNCTION_BUTTON_MASK & buttonState) ? AppEventType::ButtonPushed : AppEventType::ButtonReleased);
         button_event.Handler = FunctionHandler;
         PostEvent(button_event);
     }

 #ifdef CONFIG_CHIP_ICD_DSLS_SUPPORT
     if (ICD_DSLS_BUTTON_MASK & buttonState & hasChanged)
     {
         button_event.ButtonEvent.PinNo  = ICD_DSLS_BUTTON;
         button_event.ButtonEvent.Action = static_cast<uint8_t>(AppEventType::ButtonPushed);
         button_event.Handler            = IcdDslsEventHandler;
         PostEvent(button_event);
     }
 #endif

     if (ICD_UAT_BUTTON_MASK & hasChanged)
     {
         button_event.ButtonEvent.PinNo  = ICD_UAT_BUTTON;
         button_event.ButtonEvent.Action = static_cast<uint8_t>(AppEventType::ButtonPushed);
         button_event.Handler            = IcdUatEventHandler;
         PostEvent(button_event);
     }
 }

 #ifdef CONFIG_CHIP_ICD_DSLS_SUPPORT
 void AppTask::IcdDslsEventHandler(const AppEvent &)
 {
     if (sIsSitModeRequested)
     {
         PlatformMgr().ScheduleWork([](intptr_t arg) { chip::app::ICDNotifier::GetInstance().NotifySITModeRequestWithdrawal(); }, 0);
         sIsSitModeRequested = false;
     }
     else
     {
         PlatformMgr().ScheduleWork([](intptr_t arg) { chip::app::ICDNotifier::GetInstance().NotifySITModeRequestNotification(); },
                                    0);
         sIsSitModeRequested = true;
     }
 }
 #endif

 void AppTask::IcdUatEventHandler(const AppEvent &)
 {
     // Temporarily claim network activity, until we implement a "user trigger" reason for ICD wakeups.
     PlatformMgr().ScheduleWork([](intptr_t) { ICDNotifier::GetInstance().NotifyNetworkActivityNotification(); });
 }

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

     AppEvent event;
     event.Type               = AppEventType::Timer;
     event.TimerEvent.Context = k_timer_user_data_get(timer);
     event.Handler            = FunctionTimerEventHandler;
     PostEvent(event);
 }

 void AppTask::FunctionTimerEventHandler(const AppEvent & event)
 {
     if (event.Type != AppEventType::Timer || !Instance().mFunctionTimerActive)
     {
         return;
     }

     // If we reached here, the button was held past kFactoryResetTriggerTimeout, initiate factory reset
     if (Instance().mFunction == FunctionEvent::SoftwareUpdate)
     {
         LOG_INF("Factory Reset Triggered. Release button within %ums to cancel.", kFactoryResetTriggerTimeout);

         // Start timer for kFactoryResetCancelWindowTimeout to allow user to cancel, if required.
         Instance().StartTimer(kFactoryResetCancelWindowTimeout);
         Instance().mFunction = FunctionEvent::FactoryReset;

         // Turn off all LEDs before starting blink to make sure blink is coordinated.
         sStatusLED.Set(false);
         sFactoryResetLEDs.Set(false);

         sStatusLED.Blink(LedConsts::kBlinkRate_ms);
         sFactoryResetLEDs.Blink(LedConsts::kBlinkRate_ms);
     }
     else if (Instance().mFunction == FunctionEvent::FactoryReset)
     {
         // Actually trigger Factory Reset
         Instance().mFunction = FunctionEvent::NoneSelected;
         chip::Server::GetInstance().ScheduleFactoryReset();
     }
     else if (Instance().mFunction == FunctionEvent::AdvertisingStart)
     {
         // The button was held past kAdvertisingTriggerTimeout, start BLE advertisement if we have 2 buttons UI
         StartBLEAdvertisementHandler(event);
     }
 }

 void AppTask::FunctionHandler(const AppEvent & event)
 {
     if (event.ButtonEvent.PinNo != FUNCTION_BUTTON)
         return;

     // To trigger software update: press the FUNCTION_BUTTON button briefly (< FACTORY_RESET_TRIGGER_TIMEOUT)
     // To initiate factory reset: press the FUNCTION_BUTTON for FACTORY_RESET_TRIGGER_TIMEOUT + FACTORY_RESET_CANCEL_WINDOW_TIMEOUT
     // All LEDs start blinking after FACTORY_RESET_TRIGGER_TIMEOUT to signal factory reset has been initiated.
     // To cancel factory reset: release the FUNCTION_BUTTON once all LEDs start blinking within the
     // FACTORY_RESET_CANCEL_WINDOW_TIMEOUT
     if (event.ButtonEvent.Action == static_cast<uint8_t>(AppEventType::ButtonPushed))
     {
         if (!Instance().mFunctionTimerActive && Instance().mFunction == FunctionEvent::NoneSelected)
         {
             Instance().StartTimer(kFactoryResetTriggerTimeout);

             Instance().mFunction = FunctionEvent::SoftwareUpdate;
         }
     }
     else
     {
         // If the button was released before factory reset got initiated, trigger a software update.
         if (Instance().mFunctionTimerActive && Instance().mFunction == FunctionEvent::SoftwareUpdate)
         {
             Instance().CancelTimer();
             Instance().mFunction = FunctionEvent::NoneSelected;
         }
         else if (Instance().mFunctionTimerActive && Instance().mFunction == FunctionEvent::FactoryReset)
         {
             sFactoryResetLEDs.Set(false);
             UpdateStatusLED();
             Instance().CancelTimer();
             Instance().mFunction = FunctionEvent::NoneSelected;
             LOG_INF("Factory Reset has been Canceled");
         }
     }
 }

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

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

 void AppTask::UpdateStatusLED()
 {
 #ifdef CONFIG_STATE_LEDS
     // Update the status LED.
     //
     // If IPv6 network and service provisioned, keep the LED On constantly.
     //
     // If the system has BLE connection(s) until 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::ChipEventHandler(const ChipDeviceEvent * event, intptr_t /* arg */)
 {
     switch (event->Type)
     {
     case DeviceEventType::kCHIPoBLEAdvertisingChange:
 #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();
         UpdateStatusLED();
         break;
 #endif // CONFIG_NET_L2_OPENTHREAD
     default:
         break;
     }
 }

 void AppTask::CancelTimer()
 {
     k_timer_stop(&sFunctionTimer);
     Instance().mFunctionTimerActive = false;
 }

 void AppTask::StartTimer(uint32_t aTimeoutInMs)
 {
     k_timer_start(&sFunctionTimer, K_MSEC(aTimeoutInMs), K_NO_WAIT);
     Instance().mFunctionTimerActive = true;
 }

 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) 2024 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 "AppEvent.h"
	#include "FabricTableDelegate.h"
	#include "LEDUtil.h"

	#include <DeviceInfoProviderImpl.h>

	#include <app/server/OnboardingCodesUtil.h>
	#include <app/server/Server.h>

	#include <app/TestEventTriggerDelegate.h>
	#include <app/clusters/identify-server/identify-server.h>
	#include <app/clusters/ota-requestor/OTATestEventTriggerHandler.h>
	#include <app/util/attribute-storage.h>

	#include <credentials/DeviceAttestationCredsProvider.h>
	#include <credentials/examples/DeviceAttestationCredsExample.h>

	#if 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 uint32_t kFactoryResetTriggerTimeout = 3000;
	constexpr uint32_t kFactoryResetCancelWindowTimeout = 3000;
	constexpr size_t kAppEventQueueSize = 10;
	constexpr EndpointId kIdentifyEndpointId = 1;

	// 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 };

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

	chip::DeviceLayer::DeviceInfoProviderImpl gExampleDeviceInfoProvider;

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

	LEDWidget sStatusLED;
	LEDWidget sIdentifyLED;
	FactoryResetLEDsWrapper<2> sFactoryResetLEDs{ { FACTORY_RESET_SIGNAL_LED, FACTORY_RESET_SIGNAL_LED1 } };

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

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

	#ifdef CONFIG_CHIP_ICD_DSLS_SUPPORT
	bool sIsSitModeRequested = false;
	#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

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

	CHIP_ERROR err = chip::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");
	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");
	return err;
	}
	#else
	return CHIP_ERROR_INTERNAL;
	#endif // CONFIG_NET_L2_OPENTHREAD

	// Initialize LEDs
	LEDWidget::InitGpio();
	LEDWidget::SetStateUpdateCallback(LEDStateUpdateHandler);

	sStatusLED.Init(SYSTEM_STATE_LED);
	sIdentifyLED.Init(IDENTIFY_STATE_LED);
	sIdentifyLED.Set(false);

	UpdateStatusLED();

	// Initialize buttons
	auto ret = dk_buttons_init(ButtonEventHandler);
	if (ret)
	{
	LOG_ERR("dk_buttons_init() failed");
	return chip::System::MapErrorZephyr(ret);
	}

	// Initialize timer user data
	k_timer_init(&sFunctionTimer, &AppTask::FunctionTimerTimeoutCallback, nullptr);
	k_timer_user_data_set(&sFunctionTimer, this);

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

	// Initialize CHIP server
	#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(chip::RendezvousInformationFlag(chip::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;
	}

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

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

	if (FUNCTION_BUTTON_MASK & hasChanged)
	{
	button_event.ButtonEvent.PinNo = FUNCTION_BUTTON;
	button_event.ButtonEvent.Action =
	static_cast<uint8_t>((FUNCTION_BUTTON_MASK & buttonState) ? AppEventType::ButtonPushed : AppEventType::ButtonReleased);
	button_event.Handler = FunctionHandler;
	PostEvent(button_event);
	}

	#ifdef CONFIG_CHIP_ICD_DSLS_SUPPORT
	if (ICD_DSLS_BUTTON_MASK & buttonState & hasChanged)
	{
	button_event.ButtonEvent.PinNo = ICD_DSLS_BUTTON;
	button_event.ButtonEvent.Action = static_cast<uint8_t>(AppEventType::ButtonPushed);
	button_event.Handler = IcdDslsEventHandler;
	PostEvent(button_event);
	}
	#endif

	if (ICD_UAT_BUTTON_MASK & hasChanged)
	{
	button_event.ButtonEvent.PinNo = ICD_UAT_BUTTON;
	button_event.ButtonEvent.Action = static_cast<uint8_t>(AppEventType::ButtonPushed);
	button_event.Handler = IcdUatEventHandler;
	PostEvent(button_event);
	}
	}

	#ifdef CONFIG_CHIP_ICD_DSLS_SUPPORT
	void AppTask::IcdDslsEventHandler(const AppEvent &)
	{
	if (sIsSitModeRequested)
	{
	PlatformMgr().ScheduleWork([](intptr_t arg) { chip::app::ICDNotifier::GetInstance().NotifySITModeRequestWithdrawal(); }, 0);
	sIsSitModeRequested = false;
	}
	else
	{
	PlatformMgr().ScheduleWork([](intptr_t arg) { chip::app::ICDNotifier::GetInstance().NotifySITModeRequestNotification(); },
	0);
	sIsSitModeRequested = true;
	}
	}
	#endif

	void AppTask::IcdUatEventHandler(const AppEvent &)
	{
	// Temporarily claim network activity, until we implement a "user trigger" reason for ICD wakeups.
	PlatformMgr().ScheduleWork([](intptr_t) { ICDNotifier::GetInstance().NotifyNetworkActivityNotification(); });
	}

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

	AppEvent event;
	event.Type = AppEventType::Timer;
	event.TimerEvent.Context = k_timer_user_data_get(timer);
	event.Handler = FunctionTimerEventHandler;
	PostEvent(event);
	}

	void AppTask::FunctionTimerEventHandler(const AppEvent & event)
	{
	if (event.Type != AppEventType::Timer \|\| !Instance().mFunctionTimerActive)
	{
	return;
	}

	// If we reached here, the button was held past kFactoryResetTriggerTimeout, initiate factory reset
	if (Instance().mFunction == FunctionEvent::SoftwareUpdate)
	{
	LOG_INF("Factory Reset Triggered. Release button within %ums to cancel.", kFactoryResetTriggerTimeout);

	// Start timer for kFactoryResetCancelWindowTimeout to allow user to cancel, if required.
	Instance().StartTimer(kFactoryResetCancelWindowTimeout);
	Instance().mFunction = FunctionEvent::FactoryReset;

	// Turn off all LEDs before starting blink to make sure blink is coordinated.
	sStatusLED.Set(false);
	sFactoryResetLEDs.Set(false);

	sStatusLED.Blink(LedConsts::kBlinkRate_ms);
	sFactoryResetLEDs.Blink(LedConsts::kBlinkRate_ms);
	}
	else if (Instance().mFunction == FunctionEvent::FactoryReset)
	{
	// Actually trigger Factory Reset
	Instance().mFunction = FunctionEvent::NoneSelected;
	chip::Server::GetInstance().ScheduleFactoryReset();
	}
	else if (Instance().mFunction == FunctionEvent::AdvertisingStart)
	{
	// The button was held past kAdvertisingTriggerTimeout, start BLE advertisement if we have 2 buttons UI
	StartBLEAdvertisementHandler(event);
	}
	}

	void AppTask::FunctionHandler(const AppEvent & event)
	{
	if (event.ButtonEvent.PinNo != FUNCTION_BUTTON)
	return;

	// To trigger software update: press the FUNCTION_BUTTON button briefly (< FACTORY_RESET_TRIGGER_TIMEOUT)
	// To initiate factory reset: press the FUNCTION_BUTTON for FACTORY_RESET_TRIGGER_TIMEOUT + FACTORY_RESET_CANCEL_WINDOW_TIMEOUT
	// All LEDs start blinking after FACTORY_RESET_TRIGGER_TIMEOUT to signal factory reset has been initiated.
	// To cancel factory reset: release the FUNCTION_BUTTON once all LEDs start blinking within the
	// FACTORY_RESET_CANCEL_WINDOW_TIMEOUT
	if (event.ButtonEvent.Action == static_cast<uint8_t>(AppEventType::ButtonPushed))
	{
	if (!Instance().mFunctionTimerActive && Instance().mFunction == FunctionEvent::NoneSelected)
	{
	Instance().StartTimer(kFactoryResetTriggerTimeout);

	Instance().mFunction = FunctionEvent::SoftwareUpdate;
	}
	}
	else
	{
	// If the button was released before factory reset got initiated, trigger a software update.
	if (Instance().mFunctionTimerActive && Instance().mFunction == FunctionEvent::SoftwareUpdate)
	{
	Instance().CancelTimer();
	Instance().mFunction = FunctionEvent::NoneSelected;
	}
	else if (Instance().mFunctionTimerActive && Instance().mFunction == FunctionEvent::FactoryReset)
	{
	sFactoryResetLEDs.Set(false);
	UpdateStatusLED();
	Instance().CancelTimer();
	Instance().mFunction = FunctionEvent::NoneSelected;
	LOG_INF("Factory Reset has been Canceled");
	}
	}
	}

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

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

	void AppTask::UpdateStatusLED()
	{
	#ifdef CONFIG_STATE_LEDS
	// Update the status LED.
	//
	// If IPv6 network and service provisioned, keep the LED On constantly.
	//
	// If the system has BLE connection(s) until 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::ChipEventHandler(const ChipDeviceEvent * event, intptr_t /* arg */)
	{
	switch (event->Type)
	{
	case DeviceEventType::kCHIPoBLEAdvertisingChange:
	#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();
	UpdateStatusLED();
	break;
	#endif // CONFIG_NET_L2_OPENTHREAD
	default:
	break;
	}
	}

	void AppTask::CancelTimer()
	{
	k_timer_stop(&sFunctionTimer);
	Instance().mFunctionTimerActive = false;
	}

	void AppTask::StartTimer(uint32_t aTimeoutInMs)
	{
	k_timer_start(&sFunctionTimer, K_MSEC(aTimeoutInMs), K_NO_WAIT);
	Instance().mFunctionTimerActive = true;
	}

	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.");
	}
	}