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/*
*
* Copyright (c) 2020-2021 Project CHIP Authors
* Copyright (c) 2019 Nest Labs, Inc.
*
* 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 Silicon Labs EFR32 platforms.
*/
#pragma once
#if CHIP_DEVICE_CONFIG_ENABLE_CHIPOBLE
#include "FreeRTOS.h"
#include "timers.h"
#if (SLI_SI91X_ENABLE_BLE || RSI_BLE_ENABLE)
#ifdef __cplusplus
extern "C" {
#endif // __cplusplus
#include <rsi_ble.h>
#include <rsi_ble_apis.h>
#include <rsi_bt_common.h>
#ifdef __cplusplus
}
#endif // __cplusplus
#else
#include "gatt_db.h"
#include "sl_bgapi.h"
#include "sl_bt_api.h"
#endif // (SLI_SI91X_ENABLE_BLE || RSI_BLE_ENABLE)
namespace chip {
namespace DeviceLayer {
namespace Internal {
using namespace chip::Ble;
/**
* Concrete implementation of the BLEManager singleton object for the EFR32 platforms.
*/
class BLEManagerImpl final : public BLEManager, private BleLayer, private BlePlatformDelegate, private BleApplicationDelegate
{
public:
void HandleBootEvent(void);
#if (SLI_SI91X_ENABLE_BLE || RSI_BLE_ENABLE)
void HandleConnectEvent(void);
void HandleConnectionCloseEvent(uint16_t reason);
void HandleWriteEvent(rsi_ble_event_write_t evt);
void UpdateMtu(rsi_ble_event_mtu_t evt);
void HandleTxConfirmationEvent(BLE_CONNECTION_OBJECT conId);
void HandleTXCharCCCDWrite(rsi_ble_event_write_t * evt);
void HandleSoftTimerEvent(void);
int32_t SendBLEAdvertisementCommand(void);
#else
void HandleConnectEvent(volatile sl_bt_msg_t * evt);
void HandleConnectionCloseEvent(volatile sl_bt_msg_t * evt);
void HandleWriteEvent(volatile sl_bt_msg_t * evt);
void UpdateMtu(volatile sl_bt_msg_t * evt);
void HandleTxConfirmationEvent(BLE_CONNECTION_OBJECT conId);
void HandleTXCharCCCDWrite(volatile sl_bt_msg_t * evt);
void HandleSoftTimerEvent(volatile sl_bt_msg_t * evt);
#endif // RSI_BLE_ENABLEHandleConnectEvent
CHIP_ERROR StartAdvertising(void);
CHIP_ERROR StopAdvertising(void);
#if CHIP_ENABLE_ADDITIONAL_DATA_ADVERTISING
#if (SLI_SI91X_ENABLE_BLE || RSI_BLE_ENABLE)
static void HandleC3ReadRequest(void);
#else
#if CHIP_ENABLE_ADDITIONAL_DATA_ADVERTISING
static void HandleC3ReadRequest(volatile sl_bt_msg_t * evt);
#endif
#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);
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 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
{
kAdvertisingEnabled = 0x0001,
kFastAdvertisingEnabled = 0x0002,
kAdvertising = 0x0004,
kRestartAdvertising = 0x0008,
kEFRBLEStackInitialized = 0x0010,
kDeviceNameSet = 0x0020,
kExtAdvertisingEnabled = 0x0040,
};
enum
{
kMaxConnections = BLE_LAYER_NUM_BLE_ENDPOINTS,
kMaxDeviceNameLength = 21,
kUnusedIndex = 0xFF,
};
static constexpr uint8_t kFlagTlvSize = 3; // 1 byte for length, 1b for type and 1b for the Flag value
static constexpr uint8_t kUUIDTlvSize = 4; // 1 byte for length, 1b for type and 2b for the UUID value
static constexpr uint8_t kDeviceNameTlvSize = (2 + kMaxDeviceNameLength); // 1 byte for length, 1b for type and + device name
struct CHIPoBLEConState
{
#if !(SLI_SI91X_ENABLE_BLE || RSI_BLE_ENABLE)
bd_addr address;
#endif
uint16_t mtu : 10;
uint16_t allocated : 1;
uint16_t subscribed : 1;
uint16_t unused : 4;
uint8_t connectionHandle;
uint8_t bondingHandle;
};
CHIPoBLEConState mBleConnections[kMaxConnections];
uint8_t mIndConfId[kMaxConnections];
CHIPoBLEServiceMode mServiceMode;
BitFlags<Flags> mFlags;
char mDeviceName[kMaxDeviceNameLength + 1];
// The advertising set handle allocated from Bluetooth stack.
uint8_t advertising_set_handle = 0xff;
#if CHIP_ENABLE_ADDITIONAL_DATA_ADVERTISING
PacketBufferHandle c3AdditionalDataBufferHandle;
#endif
CHIP_ERROR MapBLEError(int bleErr);
void DriveBLEState(void);
CHIP_ERROR ConfigureAdvertisingData(void);
#if CHIP_ENABLE_ADDITIONAL_DATA_ADVERTISING
CHIP_ERROR EncodeAdditionalDataTlv();
#endif
#if (SLI_SI91X_ENABLE_BLE || RSI_BLE_ENABLE)
void HandleRXCharWrite(rsi_ble_event_write_t * evt);
#else
void HandleRXCharWrite(volatile sl_bt_msg_t * evt);
#endif
bool RemoveConnection(uint8_t connectionHandle);
void AddConnection(uint8_t connectionHandle, uint8_t bondingHandle);
void StartBleAdvTimeoutTimer(uint32_t aTimeoutInMs);
void CancelBleAdvTimeoutTimer(void);
CHIPoBLEConState * GetConnectionState(uint8_t conId, bool allocate = false);
static void DriveBLEState(intptr_t arg);
static void BleAdvTimeoutHandler(TimerHandle_t xTimer);
uint8_t GetTimerHandle(uint8_t connectionHandle, bool allocate);
#if (SLI_SI91X_ENABLE_BLE || RSI_BLE_ENABLE)
protected:
static void OnSendIndicationTimeout(System::Layer * aLayer, void * appState);
#endif
};
/**
* 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 EFR32 platforms.
*/
inline BLEManagerImpl & BLEMgrImpl(void)
{
return BLEManagerImpl::sInstance;
}
inline BleLayer * BLEManagerImpl::_GetBleLayer()
{
return this;
}
inline bool BLEManagerImpl::_IsAdvertisingEnabled(void)
{
return mFlags.Has(Flags::kAdvertisingEnabled);
}
} // namespace Internal
} // namespace DeviceLayer
} // namespace chip
#endif // CHIP_DEVICE_CONFIG_ENABLE_CHIPOBLE