src/app/clusters/fan-control-server/fan-control-server.cpp - third_party/github/project-chip/connectedhomeip - Git at Google

 /*
  *
  *    Copyright (c) 2022 Project CHIP Authors
  *
  *    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.
  */

 /****************************************************************************
  * @file
  * @brief Implementation for the Fan Control Server Cluster
  ***************************************************************************/

 #include <app-common/zap-generated/attributes/Accessors.h>
 #include <app-common/zap-generated/cluster-objects.h>
 #include <app-common/zap-generated/ids/Attributes.h>
 #include <app-common/zap-generated/ids/Clusters.h>
 #include <app/CommandHandler.h>
 #include <app/ConcreteCommandPath.h>
 #include <app/clusters/fan-control-server/fan-control-server.h>
 #include <app/util/attribute-storage.h>
 #include <app/util/config.h>
 #include <lib/support/CodeUtils.h>
 #include <lib/support/logging/CHIPLogging.h>
 #include <protocols/interaction_model/StatusCode.h>

 using namespace chip;
 using namespace chip::app;
 using namespace chip::app::Clusters;
 using namespace chip::app::Clusters::FanControl;
 using namespace chip::app::Clusters::FanControl::Attributes;

 using Protocols::InteractionModel::Status;

 namespace {

 constexpr size_t kFanControlDelegateTableSize =
     MATTER_DM_FAN_CONTROL_CLUSTER_SERVER_ENDPOINT_COUNT + CHIP_DEVICE_CONFIG_DYNAMIC_ENDPOINT_COUNT;

 static_assert(kFanControlDelegateTableSize <= kEmberInvalidEndpointIndex, "FanControl Delegate table size error");

 Delegate * gDelegateTable[kFanControlDelegateTableSize] = { nullptr };

 } // anonymous namespace

 namespace chip {
 namespace app {
 namespace Clusters {
 namespace FanControl {

 Delegate * GetDelegate(EndpointId aEndpoint)
 {
     uint16_t ep =
         emberAfGetClusterServerEndpointIndex(aEndpoint, FanControl::Id, MATTER_DM_FAN_CONTROL_CLUSTER_SERVER_ENDPOINT_COUNT);
     return (ep >= kFanControlDelegateTableSize ? nullptr : gDelegateTable[ep]);
 }

 void SetDefaultDelegate(EndpointId aEndpoint, Delegate * aDelegate)
 {
     uint16_t ep =
         emberAfGetClusterServerEndpointIndex(aEndpoint, FanControl::Id, MATTER_DM_FAN_CONTROL_CLUSTER_SERVER_ENDPOINT_COUNT);
     // if endpoint is found
     if (ep < kFanControlDelegateTableSize)
     {
         gDelegateTable[ep] = aDelegate;
     }
 }

 } // namespace FanControl
 } // namespace Clusters
 } // namespace app
 } // namespace chip

 namespace {

 // Indicates if the write operation is from the cluster server itself
 bool gWriteFromClusterLogic = false;

 Status SetFanModeToOff(EndpointId endpointId)
 {
     FanModeEnum currentFanMode;
     Status status = FanMode::Get(endpointId, &currentFanMode);
     VerifyOrReturnError(Status::Success == status, status);

     if (currentFanMode != FanModeEnum::kOff)
     {
         status = FanMode::Set(endpointId, FanModeEnum::kOff);
     }

     return status;
 }

 bool HasFeature(EndpointId endpoint, Feature feature)
 {
     bool success;
     uint32_t featureMap;
     success = (Attributes::FeatureMap::Get(endpoint, &featureMap) == Status::Success);

     return success ? ((featureMap & to_underlying(feature)) != 0) : false;
 }

 inline bool SupportsMultiSpeed(EndpointId endpointId)
 {
     return HasFeature(endpointId, Feature::kMultiSpeed);
 }

 inline bool SupportsAuto(EndpointId endpointId)
 {
     return HasFeature(endpointId, Feature::kAuto);
 }

 inline bool SupportsRocking(EndpointId endpointId)
 {
     return HasFeature(endpointId, Feature::kRocking);
 }

 inline bool SupportsWind(EndpointId endpointId)
 {
     return HasFeature(endpointId, Feature::kWind);
 }

 inline bool SupportsStep(EndpointId endpointId)
 {
     return HasFeature(endpointId, Feature::kStep);
 }

 inline bool SupportsAirflowDirection(EndpointId endpointId)
 {
     return HasFeature(endpointId, Feature::kAirflowDirection);
 }

 } // anonymous namespace

 // =============================================================================
 // Pre-change callbacks for cluster attributes
 // =============================================================================

 using Status = Protocols::InteractionModel::Status;

 Protocols::InteractionModel::Status
 MatterFanControlClusterServerPreAttributeChangedCallback(const ConcreteAttributePath & attributePath,
                                                          EmberAfAttributeType attributeType, uint16_t size, uint8_t * value)
 {
     Protocols::InteractionModel::Status res;

     switch (attributePath.mAttributeId)
     {
     case FanMode::Id: {
         if (*value == to_underlying(FanModeEnum::kOn))
         {
             FanMode::Set(attributePath.mEndpointId, FanModeEnum::kHigh);
             res = Status::WriteIgnored;
         }
         else if (*value == to_underlying(FanModeEnum::kSmart))
         {
             FanModeSequenceEnum fanModeSequence;
             Status status = FanModeSequence::Get(attributePath.mEndpointId, &fanModeSequence);
             VerifyOrReturnError(Status::Success == status, Status::Failure);

             if (SupportsAuto(attributePath.mEndpointId) &&
                 ((fanModeSequence == FanModeSequenceEnum::kOffLowHighAuto) ||
                  (fanModeSequence == FanModeSequenceEnum::kOffLowMedHighAuto)))
             {
                 FanMode::Set(attributePath.mEndpointId, FanModeEnum::kAuto);
             }
             else
             {
                 FanMode::Set(attributePath.mEndpointId, FanModeEnum::kHigh);
             }
             res = Status::WriteIgnored;
         }
         else
         {
             res = Status::Success;
         }
         break;
     }
     case SpeedSetting::Id: {
         if (SupportsMultiSpeed(attributePath.mEndpointId))
         {
             // Check if the SpeedSetting is null.
             if (NumericAttributeTraits<uint8_t>::IsNullValue(*value))
             {

                 if (gWriteFromClusterLogic)
                 {
                     res                    = Status::Success;
                     gWriteFromClusterLogic = false;
                 }
                 else
                 {
                     res = Status::WriteIgnored;
                 }
             }
             else
             {
                 uint8_t speedMax;
                 Status status = SpeedMax::Get(attributePath.mEndpointId, &speedMax);
                 VerifyOrReturnError(Status::Success == status, Status::ConstraintError);

                 if (*value <= speedMax)
                 {
                     res = Status::Success;
                 }
                 else
                 {
                     res = Status::ConstraintError;
                 }
             }
         }
         else
         {
             res = Status::UnsupportedAttribute;
         }
         break;
     }
     case PercentSetting::Id: {
         // Check if the PercentSetting is null.
         if (NumericAttributeTraits<Percent>::IsNullValue(*value))
         {
             if (gWriteFromClusterLogic)
             {
                 res                    = Status::Success;
                 gWriteFromClusterLogic = false;
             }
             else
             {
                 res = Status::WriteIgnored;
             }
         }
         else
         {
             res = Status::Success;
         }
         break;
     }
     case RockSetting::Id: {
         if (SupportsRocking(attributePath.mEndpointId))
         {
             BitMask<RockBitmap> rockSupport;
             Status status = RockSupport::Get(attributePath.mEndpointId, &rockSupport);
             VerifyOrReturnError(Status::Success == status, Status::ConstraintError);
             auto rawRockSupport = rockSupport.Raw();
             if ((*value & rawRockSupport) == *value)
             {
                 res = Status::Success;
             }
             else
             {
                 res = Status::ConstraintError;
             }
         }
         else
         {
             res = Status::UnsupportedAttribute;
         }
         break;
     }
     case WindSetting::Id: {
         if (SupportsWind(attributePath.mEndpointId))
         {
             BitMask<WindBitmap> windSupport;
             Status status = WindSupport::Get(attributePath.mEndpointId, &windSupport);
             VerifyOrReturnError(Status::Success == status, Status::ConstraintError);
             auto rawWindSupport = windSupport.Raw();
             if ((*value & rawWindSupport) == *value)
             {
                 res = Status::Success;
             }
             else
             {
                 res = Status::ConstraintError;
             }
         }
         else
         {
             res = Status::UnsupportedAttribute;
         }
         break;
     }
     case AirflowDirection::Id: {
         if (SupportsAirflowDirection(attributePath.mEndpointId))
         {
             res = Status::Success;
         }
         else
         {
             res = Status::UnsupportedAttribute;
         }
         break;
     }
     default:
         res = Status::Success;
         break;
     }

     return res;
 }

 void MatterFanControlClusterServerAttributeChangedCallback(const app::ConcreteAttributePath & attributePath)
 {
     switch (attributePath.mAttributeId)
     {
     case FanMode::Id: {
         FanModeEnum mode;
         Status status = FanMode::Get(attributePath.mEndpointId, &mode);
         VerifyOrReturn(Status::Success == status);

         // Setting the FanMode value to Off SHALL set the values of PercentSetting, PercentCurrent,
         // SpeedSetting, SpeedCurrent attributes to 0 (zero).
         if (mode == FanModeEnum::kOff)
         {
             status = PercentSetting::Set(attributePath.mEndpointId, 0);
             VerifyOrReturn(Status::Success == status,
                            ChipLogError(Zcl, "Failed to write PercentSetting with error: 0x%02x", to_underlying(status)));

             status = PercentCurrent::Set(attributePath.mEndpointId, 0);
             VerifyOrReturn(Status::Success == status,
                            ChipLogError(Zcl, "Failed to write PercentCurrent with error: 0x%02x", to_underlying(status)));

             if (SupportsMultiSpeed(attributePath.mEndpointId))
             {
                 status = SpeedSetting::Set(attributePath.mEndpointId, 0);
                 VerifyOrReturn(Status::Success == status,
                                ChipLogError(Zcl, "Failed to write SpeedSetting with error: 0x%02x", to_underlying(status)));

                 status = SpeedCurrent::Set(attributePath.mEndpointId, 0);
                 VerifyOrReturn(Status::Success == status,
                                ChipLogError(Zcl, "Failed to write SpeedCurrent with error: 0x%02x", to_underlying(status)));
             }
         }

         // Setting the attribute value to Auto SHALL set the values of PercentSetting, SpeedSetting (if present)
         // to null.
         if (mode == FanModeEnum::kAuto)
         {
             gWriteFromClusterLogic = true;
             status                 = PercentSetting::SetNull(attributePath.mEndpointId);
             VerifyOrReturn(Status::Success == status,
                            ChipLogError(Zcl, "Failed to write PercentSetting with error: 0x%02x", to_underlying(status)));

             if (SupportsMultiSpeed(attributePath.mEndpointId))
             {
                 gWriteFromClusterLogic = true;
                 status                 = SpeedSetting::SetNull(attributePath.mEndpointId);
                 VerifyOrReturn(Status::Success == status,
                                ChipLogError(Zcl, "Failed to write SpeedSetting with error: 0x%02x", to_underlying(status)));
             }
         }
         break;
     }
     case PercentSetting::Id: {
         DataModel::Nullable<Percent> percentSetting;
         Status status = PercentSetting::Get(attributePath.mEndpointId, percentSetting);
         VerifyOrReturn(Status::Success == status && !percentSetting.IsNull());

         // If PercentSetting is set to 0, the server SHALL set the FanMode attribute value to Off.
         if (percentSetting.Value() == 0)
         {
             status = SetFanModeToOff(attributePath.mEndpointId);
             VerifyOrReturn(Status::Success == status,
                            ChipLogError(Zcl, "Failed to set FanMode to off with error: 0x%02x", to_underlying(status)));
         }

         if (SupportsMultiSpeed(attributePath.mEndpointId))
         {
             // Adjust SpeedSetting from a percent value change for PercentSetting
             // speed = ceil( SpeedMax * (percent * 0.01) )
             uint8_t speedMax;
             status = SpeedMax::Get(attributePath.mEndpointId, &speedMax);
             VerifyOrReturn(Status::Success == status,
                            ChipLogError(Zcl, "Failed to get SpeedMax with error: 0x%02x", to_underlying(status)));

             DataModel::Nullable<uint8_t> currentSpeedSetting;
             status = SpeedSetting::Get(attributePath.mEndpointId, currentSpeedSetting);
             VerifyOrReturn(Status::Success == status,
                            ChipLogError(Zcl, "Failed to get SpeedSetting with error: 0x%02x", to_underlying(status)));

             uint16_t percent = percentSetting.Value();
             // Plus 99 then integer divide by 100 instead of multiplying 0.01 to avoid floating point precision error
             uint8_t speedSetting = static_cast<uint8_t>((speedMax * percent + 99) / 100);

             if (currentSpeedSetting.IsNull() || speedSetting != currentSpeedSetting.Value())
             {
                 status = SpeedSetting::Set(attributePath.mEndpointId, speedSetting);
                 VerifyOrReturn(Status::Success == status,
                                ChipLogError(Zcl, "Failed to set SpeedSetting with error: 0x%02x", to_underlying(status)));
             }
         }
         break;
     }
     case SpeedSetting::Id: {
         if (SupportsMultiSpeed(attributePath.mEndpointId))
         {
             DataModel::Nullable<uint8_t> speedSetting;
             Status status = SpeedSetting::Get(attributePath.mEndpointId, speedSetting);
             VerifyOrReturn(Status::Success == status && !speedSetting.IsNull());

             // If SpeedSetting is set to 0, the server SHALL set the FanMode attribute value to Off.
             if (speedSetting.Value() == 0)
             {
                 status = SetFanModeToOff(attributePath.mEndpointId);
                 VerifyOrReturn(Status::Success == status,
                                ChipLogError(Zcl, "Failed to set FanMode to off with error: 0x%02x", to_underlying(status)));
             }

             // Adjust PercentSetting from a speed value change for SpeedSetting
             // percent = floor( speed/SpeedMax * 100 )
             uint8_t speedMax;
             status = SpeedMax::Get(attributePath.mEndpointId, &speedMax);
             VerifyOrReturn(Status::Success == status,
                            ChipLogError(Zcl, "Failed to get SpeedMax with error: 0x%02x", to_underlying(status)));

             DataModel::Nullable<Percent> currentPercentSetting;
             status = PercentSetting::Get(attributePath.mEndpointId, currentPercentSetting);
             VerifyOrReturn(Status::Success == status,
                            ChipLogError(Zcl, "Failed to get PercentSetting with error: 0x%02x", to_underlying(status)));

             float speed            = speedSetting.Value();
             Percent percentSetting = static_cast<Percent>(speed / speedMax * 100);

             if (currentPercentSetting.IsNull() || percentSetting != currentPercentSetting.Value())
             {
                 status = PercentSetting::Set(attributePath.mEndpointId, percentSetting);
                 VerifyOrReturn(Status::Success == status,
                                ChipLogError(Zcl, "Failed to set PercentSetting with error: 0x%02x", to_underlying(status)));
             }
         }
         break;
     }
     default:
         break;
     }
 }

 bool emberAfFanControlClusterStepCallback(app::CommandHandler * commandObj, const app::ConcreteCommandPath & commandPath,
                                           const Commands::Step::DecodableType & commandData)
 {
     Protocols::InteractionModel::Status status = Status::Success;

     ChipLogProgress(Zcl, "FanControl emberAfFanControlClusterStepCallback: Endpoint %u", commandPath.mEndpointId);

     if (!SupportsStep(commandPath.mEndpointId))
     {
         ChipLogProgress(Zcl, "FanControl does not support Step:%u", commandPath.mEndpointId);
         status = Status::UnsupportedCommand;
     }
     else
     {
         EndpointId endpoint         = commandPath.mEndpointId;
         StepDirectionEnum direction = commandData.direction;

         bool wrapValue      = commandData.wrap.ValueOr(false);
         bool lowestOffValue = commandData.lowestOff.ValueOr(false);

         Delegate * delegate = GetDelegate(endpoint);
         if (delegate)
         {
             status = delegate->HandleStep(direction, wrapValue, lowestOffValue);
         }
         else
         {
             ChipLogProgress(Zcl, "FanControl has no delegate set for endpoint:%u", endpoint);
             status = Status::Failure;
         }
     }

     commandObj->AddStatus(commandPath, status);
     return true;
 }
	/*
	*
	* Copyright (c) 2022 Project CHIP Authors
	*
	* 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.
	*/

	/****************************************************************************
	* @file
	* @brief Implementation for the Fan Control Server Cluster
	***************************************************************************/

	#include <app-common/zap-generated/attributes/Accessors.h>
	#include <app-common/zap-generated/cluster-objects.h>
	#include <app-common/zap-generated/ids/Attributes.h>
	#include <app-common/zap-generated/ids/Clusters.h>
	#include <app/CommandHandler.h>
	#include <app/ConcreteCommandPath.h>
	#include <app/clusters/fan-control-server/fan-control-server.h>
	#include <app/util/attribute-storage.h>
	#include <app/util/config.h>
	#include <lib/support/CodeUtils.h>
	#include <lib/support/logging/CHIPLogging.h>
	#include <protocols/interaction_model/StatusCode.h>

	using namespace chip;
	using namespace chip::app;
	using namespace chip::app::Clusters;
	using namespace chip::app::Clusters::FanControl;
	using namespace chip::app::Clusters::FanControl::Attributes;

	using Protocols::InteractionModel::Status;

	namespace {

	constexpr size_t kFanControlDelegateTableSize =
	MATTER_DM_FAN_CONTROL_CLUSTER_SERVER_ENDPOINT_COUNT + CHIP_DEVICE_CONFIG_DYNAMIC_ENDPOINT_COUNT;

	static_assert(kFanControlDelegateTableSize <= kEmberInvalidEndpointIndex, "FanControl Delegate table size error");

	Delegate * gDelegateTable[kFanControlDelegateTableSize] = { nullptr };

	} // anonymous namespace

	namespace chip {
	namespace app {
	namespace Clusters {
	namespace FanControl {

	Delegate * GetDelegate(EndpointId aEndpoint)
	{
	uint16_t ep =
	emberAfGetClusterServerEndpointIndex(aEndpoint, FanControl::Id, MATTER_DM_FAN_CONTROL_CLUSTER_SERVER_ENDPOINT_COUNT);
	return (ep >= kFanControlDelegateTableSize ? nullptr : gDelegateTable[ep]);
	}

	void SetDefaultDelegate(EndpointId aEndpoint, Delegate * aDelegate)
	{
	uint16_t ep =
	emberAfGetClusterServerEndpointIndex(aEndpoint, FanControl::Id, MATTER_DM_FAN_CONTROL_CLUSTER_SERVER_ENDPOINT_COUNT);
	// if endpoint is found
	if (ep < kFanControlDelegateTableSize)
	{
	gDelegateTable[ep] = aDelegate;
	}
	}

	} // namespace FanControl
	} // namespace Clusters
	} // namespace app
	} // namespace chip

	namespace {

	// Indicates if the write operation is from the cluster server itself
	bool gWriteFromClusterLogic = false;

	Status SetFanModeToOff(EndpointId endpointId)
	{
	FanModeEnum currentFanMode;
	Status status = FanMode::Get(endpointId, &currentFanMode);
	VerifyOrReturnError(Status::Success == status, status);

	if (currentFanMode != FanModeEnum::kOff)
	{
	status = FanMode::Set(endpointId, FanModeEnum::kOff);
	}

	return status;
	}

	bool HasFeature(EndpointId endpoint, Feature feature)
	{
	bool success;
	uint32_t featureMap;
	success = (Attributes::FeatureMap::Get(endpoint, &featureMap) == Status::Success);

	return success ? ((featureMap & to_underlying(feature)) != 0) : false;
	}

	inline bool SupportsMultiSpeed(EndpointId endpointId)
	{
	return HasFeature(endpointId, Feature::kMultiSpeed);
	}

	inline bool SupportsAuto(EndpointId endpointId)
	{
	return HasFeature(endpointId, Feature::kAuto);
	}

	inline bool SupportsRocking(EndpointId endpointId)
	{
	return HasFeature(endpointId, Feature::kRocking);
	}

	inline bool SupportsWind(EndpointId endpointId)
	{
	return HasFeature(endpointId, Feature::kWind);
	}

	inline bool SupportsStep(EndpointId endpointId)
	{
	return HasFeature(endpointId, Feature::kStep);
	}

	inline bool SupportsAirflowDirection(EndpointId endpointId)
	{
	return HasFeature(endpointId, Feature::kAirflowDirection);
	}

	} // anonymous namespace

	// =============================================================================
	// Pre-change callbacks for cluster attributes
	// =============================================================================

	using Status = Protocols::InteractionModel::Status;

	Protocols::InteractionModel::Status
	MatterFanControlClusterServerPreAttributeChangedCallback(const ConcreteAttributePath & attributePath,
	EmberAfAttributeType attributeType, uint16_t size, uint8_t * value)
	{
	Protocols::InteractionModel::Status res;

	switch (attributePath.mAttributeId)
	{
	case FanMode::Id: {
	if (*value == to_underlying(FanModeEnum::kOn))
	{
	FanMode::Set(attributePath.mEndpointId, FanModeEnum::kHigh);
	res = Status::WriteIgnored;
	}
	else if (*value == to_underlying(FanModeEnum::kSmart))
	{
	FanModeSequenceEnum fanModeSequence;
	Status status = FanModeSequence::Get(attributePath.mEndpointId, &fanModeSequence);
	VerifyOrReturnError(Status::Success == status, Status::Failure);

	if (SupportsAuto(attributePath.mEndpointId) &&
	((fanModeSequence == FanModeSequenceEnum::kOffLowHighAuto) \|\|
	(fanModeSequence == FanModeSequenceEnum::kOffLowMedHighAuto)))
	{
	FanMode::Set(attributePath.mEndpointId, FanModeEnum::kAuto);
	}
	else
	{
	FanMode::Set(attributePath.mEndpointId, FanModeEnum::kHigh);
	}
	res = Status::WriteIgnored;
	}
	else
	{
	res = Status::Success;
	}
	break;
	}
	case SpeedSetting::Id: {
	if (SupportsMultiSpeed(attributePath.mEndpointId))
	{
	// Check if the SpeedSetting is null.
	if (NumericAttributeTraits<uint8_t>::IsNullValue(*value))
	{

	if (gWriteFromClusterLogic)
	{
	res = Status::Success;
	gWriteFromClusterLogic = false;
	}
	else
	{
	res = Status::WriteIgnored;
	}
	}
	else
	{
	uint8_t speedMax;
	Status status = SpeedMax::Get(attributePath.mEndpointId, &speedMax);
	VerifyOrReturnError(Status::Success == status, Status::ConstraintError);

	if (*value <= speedMax)
	{
	res = Status::Success;
	}
	else
	{
	res = Status::ConstraintError;
	}
	}
	}
	else
	{
	res = Status::UnsupportedAttribute;
	}
	break;
	}
	case PercentSetting::Id: {
	// Check if the PercentSetting is null.
	if (NumericAttributeTraits<Percent>::IsNullValue(*value))
	{
	if (gWriteFromClusterLogic)
	{
	res = Status::Success;
	gWriteFromClusterLogic = false;
	}
	else
	{
	res = Status::WriteIgnored;
	}
	}
	else
	{
	res = Status::Success;
	}
	break;
	}
	case RockSetting::Id: {
	if (SupportsRocking(attributePath.mEndpointId))
	{
	BitMask<RockBitmap> rockSupport;
	Status status = RockSupport::Get(attributePath.mEndpointId, &rockSupport);
	VerifyOrReturnError(Status::Success == status, Status::ConstraintError);
	auto rawRockSupport = rockSupport.Raw();
	if ((value & rawRockSupport) == value)
	{
	res = Status::Success;
	}
	else
	{
	res = Status::ConstraintError;
	}
	}
	else
	{
	res = Status::UnsupportedAttribute;
	}
	break;
	}
	case WindSetting::Id: {
	if (SupportsWind(attributePath.mEndpointId))
	{
	BitMask<WindBitmap> windSupport;
	Status status = WindSupport::Get(attributePath.mEndpointId, &windSupport);
	VerifyOrReturnError(Status::Success == status, Status::ConstraintError);
	auto rawWindSupport = windSupport.Raw();
	if ((value & rawWindSupport) == value)
	{
	res = Status::Success;
	}
	else
	{
	res = Status::ConstraintError;
	}
	}
	else
	{
	res = Status::UnsupportedAttribute;
	}
	break;
	}
	case AirflowDirection::Id: {
	if (SupportsAirflowDirection(attributePath.mEndpointId))
	{
	res = Status::Success;
	}
	else
	{
	res = Status::UnsupportedAttribute;
	}
	break;
	}
	default:
	res = Status::Success;
	break;
	}

	return res;
	}

	void MatterFanControlClusterServerAttributeChangedCallback(const app::ConcreteAttributePath & attributePath)
	{
	switch (attributePath.mAttributeId)
	{
	case FanMode::Id: {
	FanModeEnum mode;
	Status status = FanMode::Get(attributePath.mEndpointId, &mode);
	VerifyOrReturn(Status::Success == status);

	// Setting the FanMode value to Off SHALL set the values of PercentSetting, PercentCurrent,
	// SpeedSetting, SpeedCurrent attributes to 0 (zero).
	if (mode == FanModeEnum::kOff)
	{
	status = PercentSetting::Set(attributePath.mEndpointId, 0);
	VerifyOrReturn(Status::Success == status,
	ChipLogError(Zcl, "Failed to write PercentSetting with error: 0x%02x", to_underlying(status)));

	status = PercentCurrent::Set(attributePath.mEndpointId, 0);
	VerifyOrReturn(Status::Success == status,
	ChipLogError(Zcl, "Failed to write PercentCurrent with error: 0x%02x", to_underlying(status)));

	if (SupportsMultiSpeed(attributePath.mEndpointId))
	{
	status = SpeedSetting::Set(attributePath.mEndpointId, 0);
	VerifyOrReturn(Status::Success == status,
	ChipLogError(Zcl, "Failed to write SpeedSetting with error: 0x%02x", to_underlying(status)));

	status = SpeedCurrent::Set(attributePath.mEndpointId, 0);
	VerifyOrReturn(Status::Success == status,
	ChipLogError(Zcl, "Failed to write SpeedCurrent with error: 0x%02x", to_underlying(status)));
	}
	}

	// Setting the attribute value to Auto SHALL set the values of PercentSetting, SpeedSetting (if present)
	// to null.
	if (mode == FanModeEnum::kAuto)
	{
	gWriteFromClusterLogic = true;
	status = PercentSetting::SetNull(attributePath.mEndpointId);
	VerifyOrReturn(Status::Success == status,
	ChipLogError(Zcl, "Failed to write PercentSetting with error: 0x%02x", to_underlying(status)));

	if (SupportsMultiSpeed(attributePath.mEndpointId))
	{
	gWriteFromClusterLogic = true;
	status = SpeedSetting::SetNull(attributePath.mEndpointId);
	VerifyOrReturn(Status::Success == status,
	ChipLogError(Zcl, "Failed to write SpeedSetting with error: 0x%02x", to_underlying(status)));
	}
	}
	break;
	}
	case PercentSetting::Id: {
	DataModel::Nullable<Percent> percentSetting;
	Status status = PercentSetting::Get(attributePath.mEndpointId, percentSetting);
	VerifyOrReturn(Status::Success == status && !percentSetting.IsNull());

	// If PercentSetting is set to 0, the server SHALL set the FanMode attribute value to Off.
	if (percentSetting.Value() == 0)
	{
	status = SetFanModeToOff(attributePath.mEndpointId);
	VerifyOrReturn(Status::Success == status,
	ChipLogError(Zcl, "Failed to set FanMode to off with error: 0x%02x", to_underlying(status)));
	}

	if (SupportsMultiSpeed(attributePath.mEndpointId))
	{
	// Adjust SpeedSetting from a percent value change for PercentSetting
	// speed = ceil( SpeedMax * (percent * 0.01) )
	uint8_t speedMax;
	status = SpeedMax::Get(attributePath.mEndpointId, &speedMax);
	VerifyOrReturn(Status::Success == status,
	ChipLogError(Zcl, "Failed to get SpeedMax with error: 0x%02x", to_underlying(status)));

	DataModel::Nullable<uint8_t> currentSpeedSetting;
	status = SpeedSetting::Get(attributePath.mEndpointId, currentSpeedSetting);
	VerifyOrReturn(Status::Success == status,
	ChipLogError(Zcl, "Failed to get SpeedSetting with error: 0x%02x", to_underlying(status)));

	uint16_t percent = percentSetting.Value();
	// Plus 99 then integer divide by 100 instead of multiplying 0.01 to avoid floating point precision error
	uint8_t speedSetting = static_cast<uint8_t>((speedMax * percent + 99) / 100);

	if (currentSpeedSetting.IsNull() \|\| speedSetting != currentSpeedSetting.Value())
	{
	status = SpeedSetting::Set(attributePath.mEndpointId, speedSetting);
	VerifyOrReturn(Status::Success == status,
	ChipLogError(Zcl, "Failed to set SpeedSetting with error: 0x%02x", to_underlying(status)));
	}
	}
	break;
	}
	case SpeedSetting::Id: {
	if (SupportsMultiSpeed(attributePath.mEndpointId))
	{
	DataModel::Nullable<uint8_t> speedSetting;
	Status status = SpeedSetting::Get(attributePath.mEndpointId, speedSetting);
	VerifyOrReturn(Status::Success == status && !speedSetting.IsNull());

	// If SpeedSetting is set to 0, the server SHALL set the FanMode attribute value to Off.
	if (speedSetting.Value() == 0)
	{
	status = SetFanModeToOff(attributePath.mEndpointId);
	VerifyOrReturn(Status::Success == status,
	ChipLogError(Zcl, "Failed to set FanMode to off with error: 0x%02x", to_underlying(status)));
	}

	// Adjust PercentSetting from a speed value change for SpeedSetting
	// percent = floor( speed/SpeedMax * 100 )
	uint8_t speedMax;
	status = SpeedMax::Get(attributePath.mEndpointId, &speedMax);
	VerifyOrReturn(Status::Success == status,
	ChipLogError(Zcl, "Failed to get SpeedMax with error: 0x%02x", to_underlying(status)));

	DataModel::Nullable<Percent> currentPercentSetting;
	status = PercentSetting::Get(attributePath.mEndpointId, currentPercentSetting);
	VerifyOrReturn(Status::Success == status,
	ChipLogError(Zcl, "Failed to get PercentSetting with error: 0x%02x", to_underlying(status)));

	float speed = speedSetting.Value();
	Percent percentSetting = static_cast<Percent>(speed / speedMax * 100);

	if (currentPercentSetting.IsNull() \|\| percentSetting != currentPercentSetting.Value())
	{
	status = PercentSetting::Set(attributePath.mEndpointId, percentSetting);
	VerifyOrReturn(Status::Success == status,
	ChipLogError(Zcl, "Failed to set PercentSetting with error: 0x%02x", to_underlying(status)));
	}
	}
	break;
	}
	default:
	break;
	}
	}

	bool emberAfFanControlClusterStepCallback(app::CommandHandler * commandObj, const app::ConcreteCommandPath & commandPath,
	const Commands::Step::DecodableType & commandData)
	{
	Protocols::InteractionModel::Status status = Status::Success;

	ChipLogProgress(Zcl, "FanControl emberAfFanControlClusterStepCallback: Endpoint %u", commandPath.mEndpointId);

	if (!SupportsStep(commandPath.mEndpointId))
	{
	ChipLogProgress(Zcl, "FanControl does not support Step:%u", commandPath.mEndpointId);
	status = Status::UnsupportedCommand;
	}
	else
	{
	EndpointId endpoint = commandPath.mEndpointId;
	StepDirectionEnum direction = commandData.direction;

	bool wrapValue = commandData.wrap.ValueOr(false);
	bool lowestOffValue = commandData.lowestOff.ValueOr(false);

	Delegate * delegate = GetDelegate(endpoint);
	if (delegate)
	{
	status = delegate->HandleStep(direction, wrapValue, lowestOffValue);
	}
	else
	{
	ChipLogProgress(Zcl, "FanControl has no delegate set for endpoint:%u", endpoint);
	status = Status::Failure;
	}
	}

	commandObj->AddStatus(commandPath, status);
	return true;
	}