src/platform/ESP32/BLEManagerImpl.h - third_party/github/project-chip/connectedhomeip - Git at Google

 /*
  *
  *    Copyright (c) 2020-2021 Project CHIP Authors
  *    Copyright (c) 2018 Nest Labs, Inc.
  *    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.
  */

 /**
  *    @file
  *          Provides an implementation of the BLEManager singleton object
  *          for the ESP32 platform.
  */

 #pragma once
 #include <string>

 #if CHIP_DEVICE_CONFIG_ENABLE_CHIPOBLE

 #include "sdkconfig.h"

 #if CONFIG_BT_BLUEDROID_ENABLED

 #include "esp_bt.h"
 #include "esp_gap_ble_api.h"
 #if CONFIG_ENABLE_ESP32_BLE_CONTROLLER
 #include "esp_gattc_api.h"
 #endif
 #include "esp_gatts_api.h"
 #include <lib/core/CHIPCallback.h>
 #elif CONFIG_BT_NIMBLE_ENABLED

 /* min max macros in NimBLE can cause build issues with generic min max
  * functions defined in CHIP.*/
 #define min
 #define max
 #include "host/ble_hs.h"
 #undef min
 #undef max

 /* GATT context */
 struct ble_gatt_char_context
 {
     uint16_t conn_handle;
     uint16_t attr_handle;
     struct ble_gatt_access_ctxt * ctxt;
     void * arg;
 };

 #endif

 #if CONFIG_ENABLE_ESP32_BLE_CONTROLLER && CONFIG_BT_NIMBLE_ENABLED
 #include "nimble/blecent.h"
 #endif

 #include "ble/Ble.h"
 #if CONFIG_ENABLE_ESP32_BLE_CONTROLLER
 #include <ble/BleLayer.h>
 #include <ble/BleUUID.h>
 #include <platform/ESP32/ChipDeviceScanner.h>
 #endif

 namespace chip {
 namespace DeviceLayer {
 namespace Internal {

 #if CONFIG_ENABLE_ESP32_BLE_CONTROLLER
 void HandleIncomingBleConnection(Ble::BLEEndPoint * bleEP);

 enum class BleScanState : uint8_t
 {
     kNotScanning,
     kScanForDiscriminator,
     kScanForAddress,
     kConnecting,
 };

 struct BLEAdvConfig
 {
     char * mpBleName;
     uint32_t mAdapterId;
     uint8_t mMajor;
     uint8_t mMinor;
     uint16_t mVendorId;
     uint16_t mProductId;
     uint64_t mDeviceId;
     uint8_t mPairingStatus;
     uint8_t mType;
     uint16_t mDuration;
     const char * mpAdvertisingUUID;
 };

 struct BLEScanConfig
 {
     // If an active scan for connection is being performed
     BleScanState mBleScanState = BleScanState::kNotScanning;

     // If scanning by discriminator, what are we scanning for
     SetupDiscriminator mDiscriminator;

     // If scanning by address, what address are we searching for
     std::string mAddress;

     // Optional argument to be passed to callback functions provided by the BLE scan/connect requestor
     void * mAppState = nullptr;
 };

 #endif
 /**
  * Concrete implementation of the BLEManager singleton object for the ESP32 platform.
  */
 class BLEManagerImpl final : public BLEManager,
                              private Ble::BleLayer,
                              private Ble::BlePlatformDelegate,
 #if CONFIG_ENABLE_ESP32_BLE_CONTROLLER
                              private Ble::BleApplicationDelegate,
                              private Ble::BleConnectionDelegate,
                              private ChipDeviceScannerDelegate
 #else
                              private Ble::BleApplicationDelegate
 #endif
 {
 public:
     BLEManagerImpl() {}
 #if CONFIG_ENABLE_ESP32_BLE_CONTROLLER
     CHIP_ERROR ConfigureBle(uint32_t aAdapterId, bool aIsCentral);
 #if CONFIG_BT_BLUEDROID_ENABLED
     static void gattc_profile_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if, esp_ble_gattc_cb_param_t * param);
 #endif
 #endif

 private:
     // Allow the BLEManager interface class to delegate method calls to
     // the implementation methods provided by this class.
     friend BLEManager;

     // ===== Members that implement the BLEManager internal interface.

     CHIP_ERROR _Init(void);
     void _Shutdown() {}
     bool _IsAdvertisingEnabled(void);
     CHIP_ERROR _SetAdvertisingEnabled(bool val);
     bool _IsAdvertising(void);
     CHIP_ERROR _SetAdvertisingMode(BLEAdvertisingMode mode);
     CHIP_ERROR _GetDeviceName(char * buf, size_t bufSize);
     CHIP_ERROR _SetDeviceName(const char * deviceName);
     uint16_t _NumConnections(void);
     void _OnPlatformEvent(const ChipDeviceEvent * event);
 #if CONFIG_ENABLE_ESP32_BLE_CONTROLLER
     void HandlePlatformSpecificBLEEvent(const ChipDeviceEvent * event);
     CHIP_ERROR _SetCHIPoBLEServiceMode(CHIPoBLEServiceMode val);
 #endif
     ::chip::Ble::BleLayer * _GetBleLayer(void);

     // ===== Members that implement virtual methods on BlePlatformDelegate.

     bool SubscribeCharacteristic(BLE_CONNECTION_OBJECT conId, const Ble::ChipBleUUID * svcId,
                                  const Ble::ChipBleUUID * charId) override;
     bool UnsubscribeCharacteristic(BLE_CONNECTION_OBJECT conId, const Ble::ChipBleUUID * svcId,
                                    const Ble::ChipBleUUID * charId) override;
     bool CloseConnection(BLE_CONNECTION_OBJECT conId) override;
     uint16_t GetMTU(BLE_CONNECTION_OBJECT conId) const override;
     bool SendIndication(BLE_CONNECTION_OBJECT conId, const Ble::ChipBleUUID * svcId, const Ble::ChipBleUUID * charId,
                         System::PacketBufferHandle pBuf) override;
     bool SendWriteRequest(BLE_CONNECTION_OBJECT conId, const Ble::ChipBleUUID * svcId, const Ble::ChipBleUUID * charId,
                           System::PacketBufferHandle pBuf) override;
     bool SendReadRequest(BLE_CONNECTION_OBJECT conId, const Ble::ChipBleUUID * svcId, const Ble::ChipBleUUID * charId,
                          System::PacketBufferHandle pBuf) override;
     bool SendReadResponse(BLE_CONNECTION_OBJECT conId, BLE_READ_REQUEST_CONTEXT requestContext, const Ble::ChipBleUUID * svcId,
                           const Ble::ChipBleUUID * charId) override;

     // ===== Members that implement virtual methods on BleApplicationDelegate.

     void NotifyChipConnectionClosed(BLE_CONNECTION_OBJECT conId) override;
     // ===== Members that implement virtual methods on BleConnectionDelegate.
 #if CONFIG_ENABLE_ESP32_BLE_CONTROLLER

     void NewConnection(chip::Ble::BleLayer * bleLayer, void * appState, const SetupDiscriminator & connDiscriminator) override;
     void NewConnection(chip::Ble::BleLayer * bleLayer, void * appState, BLE_CONNECTION_OBJECT connObj) override{};
     CHIP_ERROR CancelConnection() override;

     // ===== Members that implement virtual methods on ChipDeviceScannerDelegate
 #if CONFIG_BT_NIMBLE_ENABLED
     virtual void OnDeviceScanned(const struct ble_hs_adv_fields & fields, const ble_addr_t & addr,
                                  const chip::Ble::ChipBLEDeviceIdentificationInfo & info) override;
 #elif CONFIG_BT_BLUEDROID_ENABLED
     virtual void OnDeviceScanned(esp_ble_addr_type_t & addr_type, esp_bd_addr_t & addr,
                                  const chip::Ble::ChipBLEDeviceIdentificationInfo & info) override;
 #endif

     void OnScanComplete() override;
 #endif
     // ===== Members for internal use by the following friends.

     friend BLEManager & BLEMgr(void);
     friend BLEManagerImpl & BLEMgrImpl(void);

     static BLEManagerImpl sInstance;

     // ===== Private members reserved for use by this class only.

     enum class Flags : uint16_t
     {
         kAsyncInitCompleted       = 0x0001, /**< One-time asynchronous initialization actions have been performed. */
         kESPBLELayerInitialized   = 0x0002, /**< The ESP BLE layer has been initialized. */
         kAppRegistered            = 0x0004, /**< The CHIPoBLE application has been registered with the ESP BLE layer. */
         kAttrsRegistered          = 0x0008, /**< The CHIPoBLE GATT attributes have been registered with the ESP BLE layer. */
         kGATTServiceStarted       = 0x0010, /**< The CHIPoBLE GATT service has been started. */
         kAdvertisingConfigured    = 0x0020, /**< CHIPoBLE advertising has been configured in the ESP BLE layer. */
         kAdvertising              = 0x0040, /**< The system is currently CHIPoBLE advertising. */
         kControlOpInProgress      = 0x0080, /**< An async control operation has been issued to the ESP BLE layer. */
         kAdvertisingEnabled       = 0x0100, /**< The application has enabled CHIPoBLE advertising. */
         kFastAdvertisingEnabled   = 0x0200, /**< The application has enabled fast advertising. */
         kUseCustomDeviceName      = 0x0400, /**< The application has configured a custom BLE device name. */
         kAdvertisingRefreshNeeded = 0x0800, /**< The advertising configuration/state in ESP BLE layer needs to be updated. */
     };

     enum
     {
         kMaxConnections      = BLE_LAYER_NUM_BLE_ENDPOINTS,
         kMaxDeviceNameLength = 16
     };

 #if CONFIG_ENABLE_ESP32_BLE_CONTROLLER
     BLEAdvConfig mBLEAdvConfig;
 #endif
 #if CONFIG_BT_NIMBLE_ENABLED
     uint16_t mSubscribedConIds[kMaxConnections];
 #endif

     struct CHIPoBLEConState
     {
         System::PacketBufferHandle PendingIndBuf;
         uint16_t ConId;
         uint16_t MTU : 10;
         uint16_t Allocated : 1;
         uint16_t Subscribed : 1;
         uint16_t Unused : 4;

         void Set(uint16_t conId)
         {
             PendingIndBuf = nullptr;
             ConId         = conId;
             MTU           = 0;
             Allocated     = 1;
             Subscribed    = 0;
             Unused        = 0;
         }
         void Reset()
         {
             PendingIndBuf = nullptr;
             ConId         = BLE_CONNECTION_UNINITIALIZED;
             MTU           = 0;
             Allocated     = 0;
             Subscribed    = 0;
             Unused        = 0;
         }
     };

     CHIPoBLEConState mCons[kMaxConnections];
     CHIPoBLEServiceMode mServiceMode;
 #if CONFIG_BT_BLUEDROID_ENABLED
     esp_gatt_if_t mAppIf;
 #elif CONFIG_BT_NIMBLE_ENABLED
     uint16_t mNumGAPCons;
 #endif
     uint16_t mServiceAttrHandle;
     uint16_t mRXCharAttrHandle;
     uint16_t mTXCharAttrHandle;
 #if CHIP_ENABLE_ADDITIONAL_DATA_ADVERTISING
     uint16_t mC3CharAttrHandle;
 #endif
     uint16_t mTXCharCCCDAttrHandle;
     BitFlags<Flags> mFlags;
     char mDeviceName[kMaxDeviceNameLength + 1];
     CHIP_ERROR MapBLEError(int bleErr);

     void DriveBLEState(void);
     CHIP_ERROR InitESPBleLayer(void);
     CHIP_ERROR ConfigureAdvertisingData(void);
     CHIP_ERROR StartAdvertising(void);

     static constexpr System::Clock::Timeout kFastAdvertiseTimeout =
         System::Clock::Milliseconds32(CHIP_DEVICE_CONFIG_BLE_ADVERTISING_INTERVAL_CHANGE_TIME);
     System::Clock::Timestamp mAdvertiseStartTime;

     static void HandleFastAdvertisementTimer(System::Layer * systemLayer, void * context);
     void HandleFastAdvertisementTimer();

 #if CONFIG_BT_BLUEDROID_ENABLED
     void HandleGATTControlEvent(esp_gatts_cb_event_t event, esp_gatt_if_t gatts_if, esp_ble_gatts_cb_param_t * param);
     void HandleGATTCommEvent(esp_gatts_cb_event_t event, esp_gatt_if_t gatts_if, esp_ble_gatts_cb_param_t * param);
     void HandleRXCharWrite(esp_ble_gatts_cb_param_t * param);
     void HandleTXCharRead(esp_ble_gatts_cb_param_t * param);
     void HandleTXCharCCCDRead(esp_ble_gatts_cb_param_t * param);
     void HandleTXCharCCCDWrite(esp_ble_gatts_cb_param_t * param);
     void HandleTXCharConfirm(CHIPoBLEConState * conState, esp_ble_gatts_cb_param_t * param);
     void HandleDisconnect(esp_ble_gatts_cb_param_t * param);
     CHIPoBLEConState * GetConnectionState(uint16_t conId, bool allocate = false);
     bool ReleaseConnectionState(uint16_t conId);
 #if CONFIG_ENABLE_ESP32_BLE_CONTROLLER
     CHIP_ERROR HandleGAPConnect(esp_ble_gattc_cb_param_t p_data);
     CHIP_ERROR HandleGAPCentralConnect(esp_ble_gattc_cb_param_t p_data);

     static void HandleConnectFailed(CHIP_ERROR error);
     static void ConnectDevice(esp_bd_addr_t & addr, esp_ble_addr_type_t addr_type, uint16_t timeout);
     void HandleGAPConnectionFailed();
     CHIP_ERROR HandleRXNotify(esp_ble_gattc_cb_param_t p_data);
 #endif
     static void HandleGATTEvent(esp_gatts_cb_event_t event, esp_gatt_if_t gatts_if, esp_ble_gatts_cb_param_t * param);
     static void HandleGAPEvent(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t * param);

 #elif CONFIG_BT_NIMBLE_ENABLED
     void HandleRXCharRead(struct ble_gatt_char_context * param);
     void HandleRXCharWrite(struct ble_gatt_char_context * param);
     void HandleTXCharWrite(struct ble_gatt_char_context * param);
     void HandleTXCharRead(struct ble_gatt_char_context * param);
     void HandleTXCharCCCDRead(void * param);
     void HandleTXCharCCCDWrite(struct ble_gap_event * gapEvent);
     CHIP_ERROR HandleTXComplete(struct ble_gap_event * gapEvent);
     CHIP_ERROR HandleGAPConnect(struct ble_gap_event * gapEvent);
     CHIP_ERROR HandleGAPPeripheralConnect(struct ble_gap_event * gapEvent);
     CHIP_ERROR HandleGAPDisconnect(struct ble_gap_event * gapEvent);
     CHIP_ERROR SetSubscribed(uint16_t conId);
     bool UnsetSubscribed(uint16_t conId);
     bool IsSubscribed(uint16_t conId);
     static void ConnectDevice(const ble_addr_t & addr, uint16_t timeout);
     CHIP_ERROR HandleGAPCentralConnect(struct ble_gap_event * gapEvent);
     void HandleGAPConnectionFailed(struct ble_gap_event * gapEvent, CHIP_ERROR error);

     static CHIP_ERROR bleprph_set_random_addr(void);
     static void bleprph_host_task(void * param);
     static void bleprph_on_sync(void);
     static void bleprph_on_reset(int);
     static const struct ble_gatt_svc_def CHIPoBLEGATTAttrs[];
     static int ble_svr_gap_event(struct ble_gap_event * event, void * arg);

     static int gatt_svr_chr_access(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt * ctxt, void * arg);
 #if CHIP_ENABLE_ADDITIONAL_DATA_ADVERTISING
     static int gatt_svr_chr_access_additional_data(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt * ctxt,
                                                    void * arg);
     void HandleC3CharRead(struct ble_gatt_char_context * param);
 #endif /* CHIP_ENABLE_ADDITIONAL_DATA_ADVERTISING */

 #if CONFIG_ENABLE_ESP32_BLE_CONTROLLER
     static int btshell_on_mtu(uint16_t conn_handle, const struct ble_gatt_error * error, uint16_t mtu, void * arg);

     bool SubOrUnsubChar(BLE_CONNECTION_OBJECT conId, const Ble::ChipBleUUID * svcId, const Ble::ChipBleUUID * charId,
                         bool subscribe);

     static void OnGattDiscComplete(const struct peer * peer, int status, void * arg);
     static void HandleConnectFailed(CHIP_ERROR error);
     CHIP_ERROR HandleRXNotify(struct ble_gap_event * event);
 #endif
 #endif
 #if CONFIG_ENABLE_ESP32_BLE_CONTROLLER
     static void CancelConnect(void);
     static void HandleConnectTimeout(chip::System::Layer *, void * context);
     void InitiateScan(BleScanState scanType);
     static void InitiateScan(intptr_t arg);
     void HandleAdvertisementTimer(System::Layer * systemLayer, void * context);
     void HandleAdvertisementTimer();
     void CleanScanConfig();
     BLEScanConfig mBLEScanConfig;
     bool mIsCentral;
 #endif

     static void DriveBLEState(intptr_t arg);
 };

 /**
  * Returns a reference to the public interface of the BLEManager singleton object.
  *
  * Internal components should use this to access features of the BLEManager object
  * that are common to all platforms.
  */
 inline BLEManager & BLEMgr(void)
 {
     return BLEManagerImpl::sInstance;
 }

 /**
  * Returns the platform-specific implementation of the BLEManager singleton object.
  *
  * Internal components can use this to gain access to features of the BLEManager
  * that are specific to the ESP32 platform.
  */
 inline BLEManagerImpl & BLEMgrImpl(void)
 {
     return BLEManagerImpl::sInstance;
 }

 inline ::chip::Ble::BleLayer * BLEManagerImpl::_GetBleLayer()
 {
     return this;
 }

 inline bool BLEManagerImpl::_IsAdvertisingEnabled(void)
 {
     return mFlags.Has(Flags::kAdvertisingEnabled);
 }

 inline bool BLEManagerImpl::_IsAdvertising(void)
 {
     return mFlags.Has(Flags::kAdvertising);
 }

 } // namespace Internal
 } // namespace DeviceLayer
 } // namespace chip

 #endif // CHIP_DEVICE_CONFIG_ENABLE_CHIPOBLE
	/*
	*
	* Copyright (c) 2020-2021 Project CHIP Authors
	* Copyright (c) 2018 Nest Labs, Inc.
	* 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.
	*/

	/**
	* @file
	* Provides an implementation of the BLEManager singleton object
	* for the ESP32 platform.
	*/

	#pragma once
	#include <string>

	#if CHIP_DEVICE_CONFIG_ENABLE_CHIPOBLE

	#include "sdkconfig.h"

	#if CONFIG_BT_BLUEDROID_ENABLED

	#include "esp_bt.h"
	#include "esp_gap_ble_api.h"
	#if CONFIG_ENABLE_ESP32_BLE_CONTROLLER
	#include "esp_gattc_api.h"
	#endif
	#include "esp_gatts_api.h"
	#include <lib/core/CHIPCallback.h>
	#elif CONFIG_BT_NIMBLE_ENABLED

	/* min max macros in NimBLE can cause build issues with generic min max
	* functions defined in CHIP.*/
	#define min
	#define max
	#include "host/ble_hs.h"
	#undef min
	#undef max

	/* GATT context */
	struct ble_gatt_char_context
	{
	uint16_t conn_handle;
	uint16_t attr_handle;
	struct ble_gatt_access_ctxt * ctxt;
	void * arg;
	};

	#endif

	#if CONFIG_ENABLE_ESP32_BLE_CONTROLLER && CONFIG_BT_NIMBLE_ENABLED
	#include "nimble/blecent.h"
	#endif

	#include "ble/Ble.h"
	#if CONFIG_ENABLE_ESP32_BLE_CONTROLLER
	#include <ble/BleLayer.h>
	#include <ble/BleUUID.h>
	#include <platform/ESP32/ChipDeviceScanner.h>
	#endif

	namespace chip {
	namespace DeviceLayer {
	namespace Internal {

	#if CONFIG_ENABLE_ESP32_BLE_CONTROLLER
	void HandleIncomingBleConnection(Ble::BLEEndPoint * bleEP);

	enum class BleScanState : uint8_t
	{
	kNotScanning,
	kScanForDiscriminator,
	kScanForAddress,
	kConnecting,
	};

	struct BLEAdvConfig
	{
	char * mpBleName;
	uint32_t mAdapterId;
	uint8_t mMajor;
	uint8_t mMinor;
	uint16_t mVendorId;
	uint16_t mProductId;
	uint64_t mDeviceId;
	uint8_t mPairingStatus;
	uint8_t mType;
	uint16_t mDuration;
	const char * mpAdvertisingUUID;
	};

	struct BLEScanConfig
	{
	// If an active scan for connection is being performed
	BleScanState mBleScanState = BleScanState::kNotScanning;

	// If scanning by discriminator, what are we scanning for
	SetupDiscriminator mDiscriminator;

	// If scanning by address, what address are we searching for
	std::string mAddress;

	// Optional argument to be passed to callback functions provided by the BLE scan/connect requestor
	void * mAppState = nullptr;
	};

	#endif
	/**
	* Concrete implementation of the BLEManager singleton object for the ESP32 platform.
	*/
	class BLEManagerImpl final : public BLEManager,
	private Ble::BleLayer,
	private Ble::BlePlatformDelegate,
	#if CONFIG_ENABLE_ESP32_BLE_CONTROLLER
	private Ble::BleApplicationDelegate,
	private Ble::BleConnectionDelegate,
	private ChipDeviceScannerDelegate
	#else
	private Ble::BleApplicationDelegate
	#endif
	{
	public:
	BLEManagerImpl() {}
	#if CONFIG_ENABLE_ESP32_BLE_CONTROLLER
	CHIP_ERROR ConfigureBle(uint32_t aAdapterId, bool aIsCentral);
	#if CONFIG_BT_BLUEDROID_ENABLED
	static void gattc_profile_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if, esp_ble_gattc_cb_param_t * param);
	#endif
	#endif

	private:
	// Allow the BLEManager interface class to delegate method calls to
	// the implementation methods provided by this class.
	friend BLEManager;

	// ===== Members that implement the BLEManager internal interface.

	CHIP_ERROR _Init(void);
	void _Shutdown() {}
	bool _IsAdvertisingEnabled(void);
	CHIP_ERROR _SetAdvertisingEnabled(bool val);
	bool _IsAdvertising(void);
	CHIP_ERROR _SetAdvertisingMode(BLEAdvertisingMode mode);
	CHIP_ERROR _GetDeviceName(char * buf, size_t bufSize);
	CHIP_ERROR _SetDeviceName(const char * deviceName);
	uint16_t _NumConnections(void);
	void _OnPlatformEvent(const ChipDeviceEvent * event);
	#if CONFIG_ENABLE_ESP32_BLE_CONTROLLER
	void HandlePlatformSpecificBLEEvent(const ChipDeviceEvent * event);
	CHIP_ERROR _SetCHIPoBLEServiceMode(CHIPoBLEServiceMode val);
	#endif
	::chip::Ble::BleLayer * _GetBleLayer(void);

	// ===== Members that implement virtual methods on BlePlatformDelegate.

	bool SubscribeCharacteristic(BLE_CONNECTION_OBJECT conId, const Ble::ChipBleUUID * svcId,
	const Ble::ChipBleUUID * charId) override;
	bool UnsubscribeCharacteristic(BLE_CONNECTION_OBJECT conId, const Ble::ChipBleUUID * svcId,
	const Ble::ChipBleUUID * charId) override;
	bool CloseConnection(BLE_CONNECTION_OBJECT conId) override;
	uint16_t GetMTU(BLE_CONNECTION_OBJECT conId) const override;
	bool SendIndication(BLE_CONNECTION_OBJECT conId, const Ble::ChipBleUUID * svcId, const Ble::ChipBleUUID * charId,
	System::PacketBufferHandle pBuf) override;
	bool SendWriteRequest(BLE_CONNECTION_OBJECT conId, const Ble::ChipBleUUID * svcId, const Ble::ChipBleUUID * charId,
	System::PacketBufferHandle pBuf) override;
	bool SendReadRequest(BLE_CONNECTION_OBJECT conId, const Ble::ChipBleUUID * svcId, const Ble::ChipBleUUID * charId,
	System::PacketBufferHandle pBuf) override;
	bool SendReadResponse(BLE_CONNECTION_OBJECT conId, BLE_READ_REQUEST_CONTEXT requestContext, const Ble::ChipBleUUID * svcId,
	const Ble::ChipBleUUID * charId) override;

	// ===== Members that implement virtual methods on BleApplicationDelegate.

	void NotifyChipConnectionClosed(BLE_CONNECTION_OBJECT conId) override;
	// ===== Members that implement virtual methods on BleConnectionDelegate.
	#if CONFIG_ENABLE_ESP32_BLE_CONTROLLER

	void NewConnection(chip::Ble::BleLayer * bleLayer, void * appState, const SetupDiscriminator & connDiscriminator) override;
	void NewConnection(chip::Ble::BleLayer * bleLayer, void * appState, BLE_CONNECTION_OBJECT connObj) override{};
	CHIP_ERROR CancelConnection() override;

	// ===== Members that implement virtual methods on ChipDeviceScannerDelegate
	#if CONFIG_BT_NIMBLE_ENABLED
	virtual void OnDeviceScanned(const struct ble_hs_adv_fields & fields, const ble_addr_t & addr,
	const chip::Ble::ChipBLEDeviceIdentificationInfo & info) override;
	#elif CONFIG_BT_BLUEDROID_ENABLED
	virtual void OnDeviceScanned(esp_ble_addr_type_t & addr_type, esp_bd_addr_t & addr,
	const chip::Ble::ChipBLEDeviceIdentificationInfo & info) override;
	#endif

	void OnScanComplete() override;
	#endif
	// ===== Members for internal use by the following friends.

	friend BLEManager & BLEMgr(void);
	friend BLEManagerImpl & BLEMgrImpl(void);

	static BLEManagerImpl sInstance;

	// ===== Private members reserved for use by this class only.

	enum class Flags : uint16_t
	{
	kAsyncInitCompleted = 0x0001, /*< One-time asynchronous initialization actions have been performed. /
	kESPBLELayerInitialized = 0x0002, /*< The ESP BLE layer has been initialized. /
	kAppRegistered = 0x0004, /*< The CHIPoBLE application has been registered with the ESP BLE layer. /
	kAttrsRegistered = 0x0008, /*< The CHIPoBLE GATT attributes have been registered with the ESP BLE layer. /
	kGATTServiceStarted = 0x0010, /*< The CHIPoBLE GATT service has been started. /
	kAdvertisingConfigured = 0x0020, /*< CHIPoBLE advertising has been configured in the ESP BLE layer. /
	kAdvertising = 0x0040, /*< The system is currently CHIPoBLE advertising. /
	kControlOpInProgress = 0x0080, /*< An async control operation has been issued to the ESP BLE layer. /
	kAdvertisingEnabled = 0x0100, /*< The application has enabled CHIPoBLE advertising. /
	kFastAdvertisingEnabled = 0x0200, /*< The application has enabled fast advertising. /
	kUseCustomDeviceName = 0x0400, /*< The application has configured a custom BLE device name. /
	kAdvertisingRefreshNeeded = 0x0800, /*< The advertising configuration/state in ESP BLE layer needs to be updated. /
	};

	enum
	{
	kMaxConnections = BLE_LAYER_NUM_BLE_ENDPOINTS,
	kMaxDeviceNameLength = 16
	};

	#if CONFIG_ENABLE_ESP32_BLE_CONTROLLER
	BLEAdvConfig mBLEAdvConfig;
	#endif
	#if CONFIG_BT_NIMBLE_ENABLED
	uint16_t mSubscribedConIds[kMaxConnections];
	#endif

	struct CHIPoBLEConState
	{
	System::PacketBufferHandle PendingIndBuf;
	uint16_t ConId;
	uint16_t MTU : 10;
	uint16_t Allocated : 1;
	uint16_t Subscribed : 1;
	uint16_t Unused : 4;

	void Set(uint16_t conId)
	{
	PendingIndBuf = nullptr;
	ConId = conId;
	MTU = 0;
	Allocated = 1;
	Subscribed = 0;
	Unused = 0;
	}
	void Reset()
	{
	PendingIndBuf = nullptr;
	ConId = BLE_CONNECTION_UNINITIALIZED;
	MTU = 0;
	Allocated = 0;
	Subscribed = 0;
	Unused = 0;
	}
	};

	CHIPoBLEConState mCons[kMaxConnections];
	CHIPoBLEServiceMode mServiceMode;
	#if CONFIG_BT_BLUEDROID_ENABLED
	esp_gatt_if_t mAppIf;
	#elif CONFIG_BT_NIMBLE_ENABLED
	uint16_t mNumGAPCons;
	#endif
	uint16_t mServiceAttrHandle;
	uint16_t mRXCharAttrHandle;
	uint16_t mTXCharAttrHandle;
	#if CHIP_ENABLE_ADDITIONAL_DATA_ADVERTISING
	uint16_t mC3CharAttrHandle;
	#endif
	uint16_t mTXCharCCCDAttrHandle;
	BitFlags<Flags> mFlags;
	char mDeviceName[kMaxDeviceNameLength + 1];
	CHIP_ERROR MapBLEError(int bleErr);

	void DriveBLEState(void);
	CHIP_ERROR InitESPBleLayer(void);
	CHIP_ERROR ConfigureAdvertisingData(void);
	CHIP_ERROR StartAdvertising(void);

	static constexpr System::Clock::Timeout kFastAdvertiseTimeout =
	System::Clock::Milliseconds32(CHIP_DEVICE_CONFIG_BLE_ADVERTISING_INTERVAL_CHANGE_TIME);
	System::Clock::Timestamp mAdvertiseStartTime;

	static void HandleFastAdvertisementTimer(System::Layer * systemLayer, void * context);
	void HandleFastAdvertisementTimer();

	#if CONFIG_BT_BLUEDROID_ENABLED
	void HandleGATTControlEvent(esp_gatts_cb_event_t event, esp_gatt_if_t gatts_if, esp_ble_gatts_cb_param_t * param);
	void HandleGATTCommEvent(esp_gatts_cb_event_t event, esp_gatt_if_t gatts_if, esp_ble_gatts_cb_param_t * param);
	void HandleRXCharWrite(esp_ble_gatts_cb_param_t * param);
	void HandleTXCharRead(esp_ble_gatts_cb_param_t * param);
	void HandleTXCharCCCDRead(esp_ble_gatts_cb_param_t * param);
	void HandleTXCharCCCDWrite(esp_ble_gatts_cb_param_t * param);
	void HandleTXCharConfirm(CHIPoBLEConState * conState, esp_ble_gatts_cb_param_t * param);
	void HandleDisconnect(esp_ble_gatts_cb_param_t * param);
	CHIPoBLEConState * GetConnectionState(uint16_t conId, bool allocate = false);
	bool ReleaseConnectionState(uint16_t conId);
	#if CONFIG_ENABLE_ESP32_BLE_CONTROLLER
	CHIP_ERROR HandleGAPConnect(esp_ble_gattc_cb_param_t p_data);
	CHIP_ERROR HandleGAPCentralConnect(esp_ble_gattc_cb_param_t p_data);

	static void HandleConnectFailed(CHIP_ERROR error);
	static void ConnectDevice(esp_bd_addr_t & addr, esp_ble_addr_type_t addr_type, uint16_t timeout);
	void HandleGAPConnectionFailed();
	CHIP_ERROR HandleRXNotify(esp_ble_gattc_cb_param_t p_data);
	#endif
	static void HandleGATTEvent(esp_gatts_cb_event_t event, esp_gatt_if_t gatts_if, esp_ble_gatts_cb_param_t * param);
	static void HandleGAPEvent(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t * param);

	#elif CONFIG_BT_NIMBLE_ENABLED
	void HandleRXCharRead(struct ble_gatt_char_context * param);
	void HandleRXCharWrite(struct ble_gatt_char_context * param);
	void HandleTXCharWrite(struct ble_gatt_char_context * param);
	void HandleTXCharRead(struct ble_gatt_char_context * param);
	void HandleTXCharCCCDRead(void * param);
	void HandleTXCharCCCDWrite(struct ble_gap_event * gapEvent);
	CHIP_ERROR HandleTXComplete(struct ble_gap_event * gapEvent);
	CHIP_ERROR HandleGAPConnect(struct ble_gap_event * gapEvent);
	CHIP_ERROR HandleGAPPeripheralConnect(struct ble_gap_event * gapEvent);
	CHIP_ERROR HandleGAPDisconnect(struct ble_gap_event * gapEvent);
	CHIP_ERROR SetSubscribed(uint16_t conId);
	bool UnsetSubscribed(uint16_t conId);
	bool IsSubscribed(uint16_t conId);
	static void ConnectDevice(const ble_addr_t & addr, uint16_t timeout);
	CHIP_ERROR HandleGAPCentralConnect(struct ble_gap_event * gapEvent);
	void HandleGAPConnectionFailed(struct ble_gap_event * gapEvent, CHIP_ERROR error);

	static CHIP_ERROR bleprph_set_random_addr(void);
	static void bleprph_host_task(void * param);
	static void bleprph_on_sync(void);
	static void bleprph_on_reset(int);
	static const struct ble_gatt_svc_def CHIPoBLEGATTAttrs[];
	static int ble_svr_gap_event(struct ble_gap_event * event, void * arg);

	static int gatt_svr_chr_access(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt * ctxt, void * arg);
	#if CHIP_ENABLE_ADDITIONAL_DATA_ADVERTISING
	static int gatt_svr_chr_access_additional_data(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt * ctxt,
	void * arg);
	void HandleC3CharRead(struct ble_gatt_char_context * param);
	#endif /* CHIP_ENABLE_ADDITIONAL_DATA_ADVERTISING */

	#if CONFIG_ENABLE_ESP32_BLE_CONTROLLER
	static int btshell_on_mtu(uint16_t conn_handle, const struct ble_gatt_error * error, uint16_t mtu, void * arg);

	bool SubOrUnsubChar(BLE_CONNECTION_OBJECT conId, const Ble::ChipBleUUID * svcId, const Ble::ChipBleUUID * charId,
	bool subscribe);

	static void OnGattDiscComplete(const struct peer * peer, int status, void * arg);
	static void HandleConnectFailed(CHIP_ERROR error);
	CHIP_ERROR HandleRXNotify(struct ble_gap_event * event);
	#endif
	#endif
	#if CONFIG_ENABLE_ESP32_BLE_CONTROLLER
	static void CancelConnect(void);
	static void HandleConnectTimeout(chip::System::Layer , void context);
	void InitiateScan(BleScanState scanType);
	static void InitiateScan(intptr_t arg);
	void HandleAdvertisementTimer(System::Layer * systemLayer, void * context);
	void HandleAdvertisementTimer();
	void CleanScanConfig();
	BLEScanConfig mBLEScanConfig;
	bool mIsCentral;
	#endif

	static void DriveBLEState(intptr_t arg);
	};

	/**
	* Returns a reference to the public interface of the BLEManager singleton object.
	*
	* Internal components should use this to access features of the BLEManager object
	* that are common to all platforms.
	*/
	inline BLEManager & BLEMgr(void)
	{
	return BLEManagerImpl::sInstance;
	}

	/**
	* Returns the platform-specific implementation of the BLEManager singleton object.
	*
	* Internal components can use this to gain access to features of the BLEManager
	* that are specific to the ESP32 platform.
	*/
	inline BLEManagerImpl & BLEMgrImpl(void)
	{
	return BLEManagerImpl::sInstance;
	}

	inline ::chip::Ble::BleLayer * BLEManagerImpl::_GetBleLayer()
	{
	return this;
	}

	inline bool BLEManagerImpl::_IsAdvertisingEnabled(void)
	{
	return mFlags.Has(Flags::kAdvertisingEnabled);
	}

	inline bool BLEManagerImpl::_IsAdvertising(void)
	{
	return mFlags.Has(Flags::kAdvertising);
	}

	} // namespace Internal
	} // namespace DeviceLayer
	} // namespace chip

	#endif // CHIP_DEVICE_CONFIG_ENABLE_CHIPOBLE