examples/lock-app/mbed/main/AppTask.cpp - third_party/github/project-chip/connectedhomeip - Git at Google

 /*
  *
  *    Copyright (c) 2021 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 "BoltLockManager.h"
 #include <LEDWidget.h>

 #include <app/server/Dnssd.h>
 #include <app/server/OnboardingCodesUtil.h>
 #include <app/server/Server.h>
 #include <credentials/DeviceAttestationCredsProvider.h>
 #include <credentials/examples/DeviceAttestationCredsExample.h>
 #include <lib/support/logging/CHIPLogging.h>
 #include <platform/CHIPDeviceLayer.h>

 // mbed-os headers
 #include "drivers/Timeout.h"
 #include "events/EventQueue.h"

 // ZAP -- ZCL Advanced Platform
 #include <app-common/zap-generated/attribute-id.h>
 #include <app-common/zap-generated/attribute-type.h>
 #include <app-common/zap-generated/ids/Clusters.h>
 #include <app/util/attribute-storage.h>

 #ifdef CAPSENSE_ENABLED
 #include "capsense.h"
 #else
 #include "drivers/InterruptIn.h"
 #include "platform/Callback.h"
 #endif

 #define FACTORY_RESET_TRIGGER_TIMEOUT (MBED_CONF_APP_FACTORY_RESET_TRIGGER_TIMEOUT)
 #define FACTORY_RESET_CANCEL_WINDOW_TIMEOUT (MBED_CONF_APP_FACTORY_RESET_CANCEL_WINDOW_TIMEOUT)
 #define LOCK_BUTTON (MBED_CONF_APP_LOCK_BUTTON)
 #define FUNCTION_BUTTON (MBED_CONF_APP_FUNCTION_BUTTON)
 #define BUTTON_PUSH_EVENT 1
 #define BUTTON_RELEASE_EVENT 0

 constexpr uint32_t kPublishServicePeriodUs = 5000000;

 static LEDWidget sStatusLED(MBED_CONF_APP_SYSTEM_STATE_LED);
 static LEDWidget sLockLED(MBED_CONF_APP_LOCK_STATE_LED);

 #ifdef CAPSENSE_ENABLED
 static mbed::CapsenseButton CapFunctionButton(Capsense::getInstance(), 0);
 static mbed::CapsenseButton CapLockButton(Capsense::getInstance(), 1);
 #else
 static mbed::InterruptIn sLockButton(LOCK_BUTTON);
 static mbed::InterruptIn sFunctionButton(FUNCTION_BUTTON);
 #endif

 static bool sIsWiFiStationProvisioned = false;
 static bool sIsWiFiStationEnabled     = false;
 static bool sIsWiFiStationConnected   = false;
 static bool sIsPairedToAccount        = false;
 static bool sHaveBLEConnections       = false;

 static mbed::Timeout sFunctionTimer;

 static events::EventQueue sAppEventQueue;

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

 AppTask AppTask::sAppTask;

 int AppTask::Init()
 {
     CHIP_ERROR error;
     // Register the callback to init the MDNS server when connectivity is available
     PlatformMgr().AddEventHandler(
         [](const ChipDeviceEvent * event, intptr_t arg) {
             // Restart the server whenever an ip address is renewed
             if (event->Type == DeviceEventType::kInternetConnectivityChange)
             {
                 if (event->InternetConnectivityChange.IPv4 == kConnectivity_Established ||
                     event->InternetConnectivityChange.IPv6 == kConnectivity_Established)
                 {
                     chip::app::DnssdServer::Instance().StartServer();
                 }
             }
         },
         0);

     // Initialize LEDs
     sLockLED.Set(!BoltLockMgr().IsUnlocked());

     // Initialize buttons
 #ifdef CAPSENSE_ENABLED
     CapFunctionButton.fall(mbed::callback(this, &AppTask::FunctionButtonPressEventHandler));
     CapFunctionButton.rise(mbed::callback(this, &AppTask::FunctionButtonReleaseEventHandler));
     CapLockButton.fall(mbed::callback(this, &AppTask::LockButtonPressEventHandler));
 #else
     sLockButton.fall(mbed::callback(this, &AppTask::LockButtonPressEventHandler));
     sFunctionButton.fall(mbed::callback(this, &AppTask::FunctionButtonPressEventHandler));
     sFunctionButton.rise(mbed::callback(this, &AppTask::FunctionButtonReleaseEventHandler));
 #endif

     // Initialize lock manager
     BoltLockMgr().Init();
     BoltLockMgr().SetCallbacks(ActionInitiated, ActionCompleted);

     // Init ZCL Data Model and start server
     static chip::CommonCaseDeviceServerInitParams initParams;
     (void) initParams.InitializeStaticResourcesBeforeServerInit();

     error = Server::GetInstance().Init(initParams);
     if (error != CHIP_NO_ERROR)
     {
         ChipLogError(NotSpecified, "Server initialization failed: %s", error.AsString());
         return EXIT_FAILURE;
     }

     // Initialize device attestation config
     SetDeviceAttestationCredentialsProvider(Examples::GetExampleDACProvider());
     ConfigurationMgr().LogDeviceConfig();
     // QR code will be used with CHIP Tool
     PrintOnboardingCodes(chip::RendezvousInformationFlags(chip::RendezvousInformationFlag::kBLE));

     error = GetDFUManager().Init();
     if (error != CHIP_NO_ERROR)
     {
         ChipLogError(NotSpecified, "DFU manager initialization failed: %s", error.AsString());
         return EXIT_FAILURE;
     }

     return 0;
 }

 int AppTask::StartApp()
 {
     int ret = Init();
     if (ret)
     {
         ChipLogError(NotSpecified, "AppTask.Init() failed");
         return ret;
     }

     ChipLogProgress(NotSpecified, "Mbed lock-app example application run");

     while (true)
     {
         sAppEventQueue.dispatch(100);

         // Collect connectivity and configuration state from the CHIP stack.  Because the
         // CHIP event loop is being run in a separate task, the stack must be locked
         // while these values are queried.  However we use a non-blocking lock request
         // (TryLockChipStack()) to avoid blocking other UI activities when the CHIP
         // task is busy (e.g. with a long crypto operation).

         if (PlatformMgr().TryLockChipStack())
         {
             sIsWiFiStationProvisioned = ConnectivityMgr().IsWiFiStationProvisioned();
             sIsWiFiStationEnabled     = ConnectivityMgr().IsWiFiStationEnabled();
             sIsWiFiStationConnected   = ConnectivityMgr().IsWiFiStationConnected();
             sHaveBLEConnections       = (ConnectivityMgr().NumBLEConnections() != 0);
             PlatformMgr().UnlockChipStack();
         }

         // Update the status LED if factory reset has not been initiated.
         //
         // If system is connected to Wi-Fi station, keep the LED On constantly.
         //
         // If Wi-Fi is provisioned, but not connected to Wi-Fi station yet
         // THEN blink the LED Off for a short period of time.
         //
         // If the system has ble connection(s) uptill the stage above, THEN blink the LEDs at an even
         // rate of 100ms.
         //
         // Otherwise, blink the LED ON for a very short time.
         if (sAppTask.mFunction != kFunction_FactoryReset)
         {
             if (sIsWiFiStationConnected)
             {
                 sStatusLED.Set(true);
             }
             else if (sIsWiFiStationProvisioned && sIsWiFiStationEnabled && sIsPairedToAccount && !sIsWiFiStationConnected)
             {
                 sStatusLED.Blink(950, 50);
             }
             else if (sHaveBLEConnections)
             {
                 sStatusLED.Blink(100, 100);
             }
             else
             {
                 sStatusLED.Blink(50, 950);
             }
         }

         sStatusLED.Animate();
         sLockLED.Animate();
     }
 }

 void AppTask::LockActionEventHandler(AppEvent * aEvent)
 {
     BoltLockManager::Action_t action = BoltLockManager::INVALID_ACTION;
     int32_t actor                    = 0;

     if (aEvent->Type == AppEvent::kEventType_Lock)
     {
         action = static_cast<BoltLockManager::Action_t>(aEvent->LockEvent.Action);
         actor  = aEvent->LockEvent.Actor;
     }
     else if (aEvent->Type == AppEvent::kEventType_Button)
     {
         action = BoltLockMgr().IsUnlocked() ? BoltLockManager::LOCK_ACTION : BoltLockManager::UNLOCK_ACTION;
         actor  = AppEvent::kEventType_Button;
     }

     if (action != BoltLockManager::INVALID_ACTION && !BoltLockMgr().InitiateAction(actor, action))
         ChipLogProgress(NotSpecified, "Action is already in progress or active.");
 }

 void AppTask::LockButtonPressEventHandler()
 {
     AppEvent button_event;
     button_event.Type               = AppEvent::kEventType_Button;
     button_event.ButtonEvent.Pin    = LOCK_BUTTON;
     button_event.ButtonEvent.Action = BUTTON_PUSH_EVENT;
     button_event.Handler            = LockActionEventHandler;
     sAppTask.PostEvent(&button_event);
 }

 void AppTask::FunctionButtonPressEventHandler()
 {
     AppEvent button_event;
     button_event.Type               = AppEvent::kEventType_Button;
     button_event.ButtonEvent.Pin    = FUNCTION_BUTTON;
     button_event.ButtonEvent.Action = BUTTON_PUSH_EVENT;
     button_event.Handler            = FunctionHandler;
     sAppTask.PostEvent(&button_event);
 }

 void AppTask::FunctionButtonReleaseEventHandler()
 {
     AppEvent button_event;
     button_event.Type               = AppEvent::kEventType_Button;
     button_event.ButtonEvent.Pin    = FUNCTION_BUTTON;
     button_event.ButtonEvent.Action = BUTTON_RELEASE_EVENT;
     button_event.Handler            = FunctionHandler;
     sAppTask.PostEvent(&button_event);
 }

 void AppTask::ButtonEventHandler(uint32_t id, bool pushed)
 {
     if (id > 1)
     {
         ChipLogError(NotSpecified, "Wrong button ID");
         return;
     }

     AppEvent button_event;
     button_event.Type               = AppEvent::kEventType_Button;
     button_event.ButtonEvent.Pin    = id == 0 ? LOCK_BUTTON : FUNCTION_BUTTON;
     button_event.ButtonEvent.Action = pushed ? BUTTON_PUSH_EVENT : BUTTON_RELEASE_EVENT;

     if (id == 0)
     {
         button_event.Handler = LockActionEventHandler;
     }
     else
     {
         button_event.Handler = FunctionHandler;
     }

     sAppTask.PostEvent(&button_event);
 }

 void AppTask::ActionInitiated(BoltLockManager::Action_t aAction, int32_t aActor)
 {
     // If the action has been initiated by the lock, update the bolt lock trait
     // and start flashing the LEDs rapidly to indicate action initiation.
     if (aAction == BoltLockManager::LOCK_ACTION)
     {
         ChipLogProgress(NotSpecified, "Lock Action has been initiated");
     }
     else if (aAction == BoltLockManager::UNLOCK_ACTION)
     {
         ChipLogProgress(NotSpecified, "Unlock Action has been initiated");
     }

     sLockLED.Blink(50, 50);
 }

 void AppTask::ActionCompleted(BoltLockManager::Action_t aAction, int32_t aActor)
 {
     // if the action has been completed by the lock, update the bolt lock trait.
     // Turn on the lock LED if in a LOCKED state OR
     // Turn off the lock LED if in an UNLOCKED state.
     if (aAction == BoltLockManager::LOCK_ACTION)
     {
         ChipLogProgress(NotSpecified, "Lock Action has been completed");
         sLockLED.Set(true);
     }
     else if (aAction == BoltLockManager::UNLOCK_ACTION)
     {
         ChipLogProgress(NotSpecified, "Unlock Action has been completed");
         sLockLED.Set(false);
     }

     if (aActor == AppEvent::kEventType_Button)
     {
         sAppTask.UpdateClusterState();
     }
 }

 void AppTask::CancelTimer()
 {
     sFunctionTimer.detach();
     mFunctionTimerActive = false;
 }

 void AppTask::StartTimer(uint32_t aTimeoutInMs)
 {
     auto chronoTimeoutMs = std::chrono::duration<uint32_t, std::milli>(aTimeoutInMs);
     sFunctionTimer.attach(mbed::callback(this, &AppTask::TimerEventHandler), chronoTimeoutMs);
     mFunctionTimerActive = true;
 }

 void AppTask::PostEvent(AppEvent * aEvent)
 {
     auto handle = sAppEventQueue.call([event = *aEvent, this] { DispatchEvent(&event); });
     if (!handle)
     {
         ChipLogError(NotSpecified, "Failed to post event to app task event queue: Not enough memory");
     }
 }

 void AppTask::DispatchEvent(const AppEvent * aEvent)
 {
     if (aEvent->Handler)
     {
         aEvent->Handler(const_cast<AppEvent *>(aEvent));
     }
     else
     {
         ChipLogError(NotSpecified, "Event received with no handler. Dropping event.");
     }
 }

 void AppTask::TimerEventHandler()
 {
     AppEvent event;
     event.Type = AppEvent::kEventType_Timer;
     // event.TimerEvent.Context = nullptr;
     event.Handler = FunctionTimerEventHandler;
     sAppTask.PostEvent(&event);
 }

 // static
 void AppTask::FunctionTimerEventHandler(AppEvent * aEvent)
 {
     if (aEvent->Type != AppEvent::kEventType_Timer)
         return;

     // If we reached here, the button was held past FACTORY_RESET_TRIGGER_TIMEOUT, initiate factory reset
     if (sAppTask.mFunctionTimerActive && sAppTask.mFunction == kFunction_StartBleAdv)
     {
         ChipLogProgress(NotSpecified, "Factory Reset Triggered. Release button within %ums to cancel.",
                         FACTORY_RESET_CANCEL_WINDOW_TIMEOUT);

         // Start timer for FACTORY_RESET_CANCEL_WINDOW_TIMEOUT to allow user to
         // cancel, if required.
         sAppTask.StartTimer(FACTORY_RESET_CANCEL_WINDOW_TIMEOUT);
         sAppTask.mFunction = kFunction_FactoryReset;

         // Turn off all LEDs before starting blink to make sure blink is co-ordinated.
         sStatusLED.Set(false);
         sLockLED.Set(false);

         sStatusLED.Blink(500);
         sLockLED.Blink(500);
     }
     else if (sAppTask.mFunctionTimerActive && sAppTask.mFunction == kFunction_FactoryReset)
     {
         // Set lock status LED back to show state of lock.
         sLockLED.Set(!BoltLockMgr().IsUnlocked());

         // Actually trigger Factory Reset
         ChipLogProgress(NotSpecified, "Factory Reset initiated");
         sAppTask.mFunction = kFunction_NoneSelected;
         chip::Server::GetInstance().ScheduleFactoryReset();
     }
 }

 void AppTask::FunctionHandler(AppEvent * aEvent)
 {
     if (aEvent->ButtonEvent.Pin != 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 (aEvent->ButtonEvent.Action == BUTTON_PUSH_EVENT)
     {
         if (!sAppTask.mFunctionTimerActive && sAppTask.mFunction == kFunction_NoneSelected)
         {
             sAppTask.StartTimer(FACTORY_RESET_TRIGGER_TIMEOUT);

             sAppTask.mFunction = kFunction_StartBleAdv;
         }
     }
     else
     {
         // If the button was released before factory reset got initiated, trigger a software update.
         if (sAppTask.mFunctionTimerActive && sAppTask.mFunction == kFunction_StartBleAdv)
         {
             sAppTask.CancelTimer();
             sAppTask.mFunction = kFunction_NoneSelected;

             chip::Server::GetInstance().GetFabricTable().DeleteAllFabrics();

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

             if (chip::Server::GetInstance().GetCommissioningWindowManager().OpenBasicCommissioningWindow() != CHIP_NO_ERROR)
             {
                 ChipLogProgress(NotSpecified, "OpenBasicCommissioningWindow() failed");
             }
         }
         else if (sAppTask.mFunctionTimerActive && sAppTask.mFunction == kFunction_FactoryReset)
         {
             // Set lock status LED back to show state of lock.
             sLockLED.Set(!BoltLockMgr().IsUnlocked());

             sAppTask.CancelTimer();

             // Change the function to none selected since factory reset has been canceled.
             sAppTask.mFunction = kFunction_NoneSelected;

             ChipLogProgress(NotSpecified, "Factory Reset has been Canceled");
         }
     }
 }

 void AppTask::UpdateClusterState()
 {
     uint8_t newValue = !BoltLockMgr().IsUnlocked();

     // write the new on/off value
     EmberAfStatus status =
         emberAfWriteAttribute(1, app::Clusters::OnOff::Id, ZCL_ON_OFF_ATTRIBUTE_ID, &newValue, ZCL_BOOLEAN_ATTRIBUTE_TYPE);
     if (status != EMBER_ZCL_STATUS_SUCCESS)
     {
         ChipLogError(NotSpecified, "ZCL update failed: %lx", status);
     }
 }
	/*
	*
	* Copyright (c) 2021 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 "BoltLockManager.h"
	#include <LEDWidget.h>

	#include <app/server/Dnssd.h>
	#include <app/server/OnboardingCodesUtil.h>
	#include <app/server/Server.h>
	#include <credentials/DeviceAttestationCredsProvider.h>
	#include <credentials/examples/DeviceAttestationCredsExample.h>
	#include <lib/support/logging/CHIPLogging.h>
	#include <platform/CHIPDeviceLayer.h>

	// mbed-os headers
	#include "drivers/Timeout.h"
	#include "events/EventQueue.h"

	// ZAP -- ZCL Advanced Platform
	#include <app-common/zap-generated/attribute-id.h>
	#include <app-common/zap-generated/attribute-type.h>
	#include <app-common/zap-generated/ids/Clusters.h>
	#include <app/util/attribute-storage.h>

	#ifdef CAPSENSE_ENABLED
	#include "capsense.h"
	#else
	#include "drivers/InterruptIn.h"
	#include "platform/Callback.h"
	#endif

	#define FACTORY_RESET_TRIGGER_TIMEOUT (MBED_CONF_APP_FACTORY_RESET_TRIGGER_TIMEOUT)
	#define FACTORY_RESET_CANCEL_WINDOW_TIMEOUT (MBED_CONF_APP_FACTORY_RESET_CANCEL_WINDOW_TIMEOUT)
	#define LOCK_BUTTON (MBED_CONF_APP_LOCK_BUTTON)
	#define FUNCTION_BUTTON (MBED_CONF_APP_FUNCTION_BUTTON)
	#define BUTTON_PUSH_EVENT 1
	#define BUTTON_RELEASE_EVENT 0

	constexpr uint32_t kPublishServicePeriodUs = 5000000;

	static LEDWidget sStatusLED(MBED_CONF_APP_SYSTEM_STATE_LED);
	static LEDWidget sLockLED(MBED_CONF_APP_LOCK_STATE_LED);

	#ifdef CAPSENSE_ENABLED
	static mbed::CapsenseButton CapFunctionButton(Capsense::getInstance(), 0);
	static mbed::CapsenseButton CapLockButton(Capsense::getInstance(), 1);
	#else
	static mbed::InterruptIn sLockButton(LOCK_BUTTON);
	static mbed::InterruptIn sFunctionButton(FUNCTION_BUTTON);
	#endif

	static bool sIsWiFiStationProvisioned = false;
	static bool sIsWiFiStationEnabled = false;
	static bool sIsWiFiStationConnected = false;
	static bool sIsPairedToAccount = false;
	static bool sHaveBLEConnections = false;

	static mbed::Timeout sFunctionTimer;

	static events::EventQueue sAppEventQueue;

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

	AppTask AppTask::sAppTask;

	int AppTask::Init()
	{
	CHIP_ERROR error;
	// Register the callback to init the MDNS server when connectivity is available
	PlatformMgr().AddEventHandler(
	[](const ChipDeviceEvent * event, intptr_t arg) {
	// Restart the server whenever an ip address is renewed
	if (event->Type == DeviceEventType::kInternetConnectivityChange)
	{
	if (event->InternetConnectivityChange.IPv4 == kConnectivity_Established \|\|
	event->InternetConnectivityChange.IPv6 == kConnectivity_Established)
	{
	chip::app::DnssdServer::Instance().StartServer();
	}
	}
	},
	0);

	// Initialize LEDs
	sLockLED.Set(!BoltLockMgr().IsUnlocked());

	// Initialize buttons
	#ifdef CAPSENSE_ENABLED
	CapFunctionButton.fall(mbed::callback(this, &AppTask::FunctionButtonPressEventHandler));
	CapFunctionButton.rise(mbed::callback(this, &AppTask::FunctionButtonReleaseEventHandler));
	CapLockButton.fall(mbed::callback(this, &AppTask::LockButtonPressEventHandler));
	#else
	sLockButton.fall(mbed::callback(this, &AppTask::LockButtonPressEventHandler));
	sFunctionButton.fall(mbed::callback(this, &AppTask::FunctionButtonPressEventHandler));
	sFunctionButton.rise(mbed::callback(this, &AppTask::FunctionButtonReleaseEventHandler));
	#endif

	// Initialize lock manager
	BoltLockMgr().Init();
	BoltLockMgr().SetCallbacks(ActionInitiated, ActionCompleted);

	// Init ZCL Data Model and start server
	static chip::CommonCaseDeviceServerInitParams initParams;
	(void) initParams.InitializeStaticResourcesBeforeServerInit();

	error = Server::GetInstance().Init(initParams);
	if (error != CHIP_NO_ERROR)
	{
	ChipLogError(NotSpecified, "Server initialization failed: %s", error.AsString());
	return EXIT_FAILURE;
	}

	// Initialize device attestation config
	SetDeviceAttestationCredentialsProvider(Examples::GetExampleDACProvider());
	ConfigurationMgr().LogDeviceConfig();
	// QR code will be used with CHIP Tool
	PrintOnboardingCodes(chip::RendezvousInformationFlags(chip::RendezvousInformationFlag::kBLE));

	error = GetDFUManager().Init();
	if (error != CHIP_NO_ERROR)
	{
	ChipLogError(NotSpecified, "DFU manager initialization failed: %s", error.AsString());
	return EXIT_FAILURE;
	}

	return 0;
	}

	int AppTask::StartApp()
	{
	int ret = Init();
	if (ret)
	{
	ChipLogError(NotSpecified, "AppTask.Init() failed");
	return ret;
	}

	ChipLogProgress(NotSpecified, "Mbed lock-app example application run");

	while (true)
	{
	sAppEventQueue.dispatch(100);

	// Collect connectivity and configuration state from the CHIP stack. Because the
	// CHIP event loop is being run in a separate task, the stack must be locked
	// while these values are queried. However we use a non-blocking lock request
	// (TryLockChipStack()) to avoid blocking other UI activities when the CHIP
	// task is busy (e.g. with a long crypto operation).

	if (PlatformMgr().TryLockChipStack())
	{
	sIsWiFiStationProvisioned = ConnectivityMgr().IsWiFiStationProvisioned();
	sIsWiFiStationEnabled = ConnectivityMgr().IsWiFiStationEnabled();
	sIsWiFiStationConnected = ConnectivityMgr().IsWiFiStationConnected();
	sHaveBLEConnections = (ConnectivityMgr().NumBLEConnections() != 0);
	PlatformMgr().UnlockChipStack();
	}

	// Update the status LED if factory reset has not been initiated.
	//
	// If system is connected to Wi-Fi station, keep the LED On constantly.
	//
	// If Wi-Fi is provisioned, but not connected to Wi-Fi station yet
	// THEN blink the LED Off for a short period of time.
	//
	// If the system has ble connection(s) uptill the stage above, THEN blink the LEDs at an even
	// rate of 100ms.
	//
	// Otherwise, blink the LED ON for a very short time.
	if (sAppTask.mFunction != kFunction_FactoryReset)
	{
	if (sIsWiFiStationConnected)
	{
	sStatusLED.Set(true);
	}
	else if (sIsWiFiStationProvisioned && sIsWiFiStationEnabled && sIsPairedToAccount && !sIsWiFiStationConnected)
	{
	sStatusLED.Blink(950, 50);
	}
	else if (sHaveBLEConnections)
	{
	sStatusLED.Blink(100, 100);
	}
	else
	{
	sStatusLED.Blink(50, 950);
	}
	}

	sStatusLED.Animate();
	sLockLED.Animate();
	}
	}

	void AppTask::LockActionEventHandler(AppEvent * aEvent)
	{
	BoltLockManager::Action_t action = BoltLockManager::INVALID_ACTION;
	int32_t actor = 0;

	if (aEvent->Type == AppEvent::kEventType_Lock)
	{
	action = static_cast<BoltLockManager::Action_t>(aEvent->LockEvent.Action);
	actor = aEvent->LockEvent.Actor;
	}
	else if (aEvent->Type == AppEvent::kEventType_Button)
	{
	action = BoltLockMgr().IsUnlocked() ? BoltLockManager::LOCK_ACTION : BoltLockManager::UNLOCK_ACTION;
	actor = AppEvent::kEventType_Button;
	}

	if (action != BoltLockManager::INVALID_ACTION && !BoltLockMgr().InitiateAction(actor, action))
	ChipLogProgress(NotSpecified, "Action is already in progress or active.");
	}

	void AppTask::LockButtonPressEventHandler()
	{
	AppEvent button_event;
	button_event.Type = AppEvent::kEventType_Button;
	button_event.ButtonEvent.Pin = LOCK_BUTTON;
	button_event.ButtonEvent.Action = BUTTON_PUSH_EVENT;
	button_event.Handler = LockActionEventHandler;
	sAppTask.PostEvent(&button_event);
	}

	void AppTask::FunctionButtonPressEventHandler()
	{
	AppEvent button_event;
	button_event.Type = AppEvent::kEventType_Button;
	button_event.ButtonEvent.Pin = FUNCTION_BUTTON;
	button_event.ButtonEvent.Action = BUTTON_PUSH_EVENT;
	button_event.Handler = FunctionHandler;
	sAppTask.PostEvent(&button_event);
	}

	void AppTask::FunctionButtonReleaseEventHandler()
	{
	AppEvent button_event;
	button_event.Type = AppEvent::kEventType_Button;
	button_event.ButtonEvent.Pin = FUNCTION_BUTTON;
	button_event.ButtonEvent.Action = BUTTON_RELEASE_EVENT;
	button_event.Handler = FunctionHandler;
	sAppTask.PostEvent(&button_event);
	}

	void AppTask::ButtonEventHandler(uint32_t id, bool pushed)
	{
	if (id > 1)
	{
	ChipLogError(NotSpecified, "Wrong button ID");
	return;
	}

	AppEvent button_event;
	button_event.Type = AppEvent::kEventType_Button;
	button_event.ButtonEvent.Pin = id == 0 ? LOCK_BUTTON : FUNCTION_BUTTON;
	button_event.ButtonEvent.Action = pushed ? BUTTON_PUSH_EVENT : BUTTON_RELEASE_EVENT;

	if (id == 0)
	{
	button_event.Handler = LockActionEventHandler;
	}
	else
	{
	button_event.Handler = FunctionHandler;
	}

	sAppTask.PostEvent(&button_event);
	}

	void AppTask::ActionInitiated(BoltLockManager::Action_t aAction, int32_t aActor)
	{
	// If the action has been initiated by the lock, update the bolt lock trait
	// and start flashing the LEDs rapidly to indicate action initiation.
	if (aAction == BoltLockManager::LOCK_ACTION)
	{
	ChipLogProgress(NotSpecified, "Lock Action has been initiated");
	}
	else if (aAction == BoltLockManager::UNLOCK_ACTION)
	{
	ChipLogProgress(NotSpecified, "Unlock Action has been initiated");
	}

	sLockLED.Blink(50, 50);
	}

	void AppTask::ActionCompleted(BoltLockManager::Action_t aAction, int32_t aActor)
	{
	// if the action has been completed by the lock, update the bolt lock trait.
	// Turn on the lock LED if in a LOCKED state OR
	// Turn off the lock LED if in an UNLOCKED state.
	if (aAction == BoltLockManager::LOCK_ACTION)
	{
	ChipLogProgress(NotSpecified, "Lock Action has been completed");
	sLockLED.Set(true);
	}
	else if (aAction == BoltLockManager::UNLOCK_ACTION)
	{
	ChipLogProgress(NotSpecified, "Unlock Action has been completed");
	sLockLED.Set(false);
	}

	if (aActor == AppEvent::kEventType_Button)
	{
	sAppTask.UpdateClusterState();
	}
	}

	void AppTask::CancelTimer()
	{
	sFunctionTimer.detach();
	mFunctionTimerActive = false;
	}

	void AppTask::StartTimer(uint32_t aTimeoutInMs)
	{
	auto chronoTimeoutMs = std::chrono::duration<uint32_t, std::milli>(aTimeoutInMs);
	sFunctionTimer.attach(mbed::callback(this, &AppTask::TimerEventHandler), chronoTimeoutMs);
	mFunctionTimerActive = true;
	}

	void AppTask::PostEvent(AppEvent * aEvent)
	{
	auto handle = sAppEventQueue.call([event = *aEvent, this] { DispatchEvent(&event); });
	if (!handle)
	{
	ChipLogError(NotSpecified, "Failed to post event to app task event queue: Not enough memory");
	}
	}

	void AppTask::DispatchEvent(const AppEvent * aEvent)
	{
	if (aEvent->Handler)
	{
	aEvent->Handler(const_cast<AppEvent *>(aEvent));
	}
	else
	{
	ChipLogError(NotSpecified, "Event received with no handler. Dropping event.");
	}
	}

	void AppTask::TimerEventHandler()
	{
	AppEvent event;
	event.Type = AppEvent::kEventType_Timer;
	// event.TimerEvent.Context = nullptr;
	event.Handler = FunctionTimerEventHandler;
	sAppTask.PostEvent(&event);
	}

	// static
	void AppTask::FunctionTimerEventHandler(AppEvent * aEvent)
	{
	if (aEvent->Type != AppEvent::kEventType_Timer)
	return;

	// If we reached here, the button was held past FACTORY_RESET_TRIGGER_TIMEOUT, initiate factory reset
	if (sAppTask.mFunctionTimerActive && sAppTask.mFunction == kFunction_StartBleAdv)
	{
	ChipLogProgress(NotSpecified, "Factory Reset Triggered. Release button within %ums to cancel.",
	FACTORY_RESET_CANCEL_WINDOW_TIMEOUT);

	// Start timer for FACTORY_RESET_CANCEL_WINDOW_TIMEOUT to allow user to
	// cancel, if required.
	sAppTask.StartTimer(FACTORY_RESET_CANCEL_WINDOW_TIMEOUT);
	sAppTask.mFunction = kFunction_FactoryReset;

	// Turn off all LEDs before starting blink to make sure blink is co-ordinated.
	sStatusLED.Set(false);
	sLockLED.Set(false);

	sStatusLED.Blink(500);
	sLockLED.Blink(500);
	}
	else if (sAppTask.mFunctionTimerActive && sAppTask.mFunction == kFunction_FactoryReset)
	{
	// Set lock status LED back to show state of lock.
	sLockLED.Set(!BoltLockMgr().IsUnlocked());

	// Actually trigger Factory Reset
	ChipLogProgress(NotSpecified, "Factory Reset initiated");
	sAppTask.mFunction = kFunction_NoneSelected;
	chip::Server::GetInstance().ScheduleFactoryReset();
	}
	}

	void AppTask::FunctionHandler(AppEvent * aEvent)
	{
	if (aEvent->ButtonEvent.Pin != 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 (aEvent->ButtonEvent.Action == BUTTON_PUSH_EVENT)
	{
	if (!sAppTask.mFunctionTimerActive && sAppTask.mFunction == kFunction_NoneSelected)
	{
	sAppTask.StartTimer(FACTORY_RESET_TRIGGER_TIMEOUT);

	sAppTask.mFunction = kFunction_StartBleAdv;
	}
	}
	else
	{
	// If the button was released before factory reset got initiated, trigger a software update.
	if (sAppTask.mFunctionTimerActive && sAppTask.mFunction == kFunction_StartBleAdv)
	{
	sAppTask.CancelTimer();
	sAppTask.mFunction = kFunction_NoneSelected;

	chip::Server::GetInstance().GetFabricTable().DeleteAllFabrics();

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

	if (chip::Server::GetInstance().GetCommissioningWindowManager().OpenBasicCommissioningWindow() != CHIP_NO_ERROR)
	{
	ChipLogProgress(NotSpecified, "OpenBasicCommissioningWindow() failed");
	}
	}
	else if (sAppTask.mFunctionTimerActive && sAppTask.mFunction == kFunction_FactoryReset)
	{
	// Set lock status LED back to show state of lock.
	sLockLED.Set(!BoltLockMgr().IsUnlocked());

	sAppTask.CancelTimer();

	// Change the function to none selected since factory reset has been canceled.
	sAppTask.mFunction = kFunction_NoneSelected;

	ChipLogProgress(NotSpecified, "Factory Reset has been Canceled");
	}
	}
	}

	void AppTask::UpdateClusterState()
	{
	uint8_t newValue = !BoltLockMgr().IsUnlocked();

	// write the new on/off value
	EmberAfStatus status =
	emberAfWriteAttribute(1, app::Clusters::OnOff::Id, ZCL_ON_OFF_ATTRIBUTE_ID, &newValue, ZCL_BOOLEAN_ATTRIBUTE_TYPE);
	if (status != EMBER_ZCL_STATUS_SUCCESS)
	{
	ChipLogError(NotSpecified, "ZCL update failed: %lx", status);
	}
	}