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BLEManagerImpl.cpp
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/*
*
* Copyright (c) 2020-2021 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.
*/
/**
* @file
* Provides an implementation of the BLEManager singleton object
* for the ESP32 (NimBLE) platform.
*/
/* this file behaves like a config.h, comes first */
#include <platform/internal/CHIPDeviceLayerInternal.h>
#if CHIP_DEVICE_CONFIG_ENABLE_CHIPOBLE
#include "sdkconfig.h"
#ifdef CONFIG_BT_NIMBLE_ENABLED
#ifdef CONFIG_ENABLE_ESP32_BLE_CONTROLLER
#include <ble/Ble.h>
#endif // CONFIG_ENABLE_ESP32_BLE_CONTROLLER
#include <lib/support/CodeUtils.h>
#include <lib/support/SafeInt.h>
#include <lib/support/logging/CHIPLogging.h>
#include <platform/CommissionableDataProvider.h>
#include <platform/DeviceInstanceInfoProvider.h>
#ifdef CONFIG_ENABLE_ESP32_BLE_CONTROLLER
#include <platform/ESP32/BLEManagerImpl.h>
#endif // CONFIG_ENABLE_ESP32_BLE_CONTROLLER
#include <platform/internal/BLEManager.h>
#include <setup_payload/AdditionalDataPayloadGenerator.h>
#include <system/SystemTimer.h>
#include "esp_bt.h"
#include "esp_log.h"
#if ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(5, 0, 0)
#include "esp_nimble_hci.h"
#endif
#ifdef CONFIG_ENABLE_ESP32_BLE_CONTROLLER
#include "blecent.h"
#endif // CONFIG_ENABLE_ESP32_BLE_CONTROLLER
#include "host/ble_hs.h"
#include "host/ble_hs_pvcy.h"
#include "host/ble_uuid.h"
#include "host/util/util.h"
#include "nimble/nimble_port.h"
#include "nimble/nimble_port_freertos.h"
#include "services/gap/ble_svc_gap.h"
#include "services/gatt/ble_svc_gatt.h"
#define MAX_ADV_DATA_LEN 31
#define CHIP_ADV_DATA_TYPE_FLAGS 0x01
#define CHIP_ADV_DATA_FLAGS 0x06
#define CHIP_ADV_DATA_TYPE_SERVICE_DATA 0x16
using namespace ::chip;
using namespace ::chip::Ble;
namespace chip {
namespace DeviceLayer {
namespace Internal {
namespace {
#ifdef CONFIG_ENABLE_ESP32_BLE_CONTROLLER
static constexpr uint16_t kNewConnectionScanTimeout = 60;
static constexpr uint16_t kConnectTimeout = 20;
#endif // CONFIG_ENABLE_ESP32_BLE_CONTROLLER
struct ESP32ChipServiceData
{
uint8_t ServiceUUID[2];
ChipBLEDeviceIdentificationInfo DeviceIdInfo;
};
const ble_uuid16_t ShortUUID_CHIPoBLEService = { BLE_UUID_TYPE_16, 0xFFF6 };
#ifdef CONFIG_ENABLE_ESP32_BLE_CONTROLLER
const ble_uuid16_t ShortUUID_CHIPoBLE_CharTx_Desc = { BLE_UUID_TYPE_16, 0x2902 };
#endif // CONFIG_ENABLE_ESP32_BLE_CONTROLLER
const ble_uuid128_t UUID128_CHIPoBLEChar_RX = {
BLE_UUID_TYPE_128, { 0x11, 0x9D, 0x9F, 0x42, 0x9C, 0x4F, 0x9F, 0x95, 0x59, 0x45, 0x3D, 0x26, 0xF5, 0x2E, 0xEE, 0x18 }
};
const ble_uuid128_t UUID_CHIPoBLEChar_TX = {
{ BLE_UUID_TYPE_128 }, { 0x12, 0x9D, 0x9F, 0x42, 0x9C, 0x4F, 0x9F, 0x95, 0x59, 0x45, 0x3D, 0x26, 0xF5, 0x2E, 0xEE, 0x18 }
};
#ifdef CHIP_ENABLE_ADDITIONAL_DATA_ADVERTISING
const ble_uuid128_t UUID_CHIPoBLEChar_C3 = {
{ BLE_UUID_TYPE_128 }, { 0x04, 0x8F, 0x21, 0x83, 0x8A, 0x74, 0x7D, 0xB8, 0xF2, 0x45, 0x72, 0x87, 0x38, 0x02, 0x63, 0x64 }
};
#endif // CHIP_ENABLE_ADDITIONAL_DATA_ADVERTISING
SemaphoreHandle_t semaphoreHandle = NULL;
// LE Random Device Address
// (see Bluetooth® Core Specification 4.2 Vol 6, Part B, Section 1.3.2.1 "Static device address")
uint8_t own_addr_type = BLE_OWN_ADDR_RANDOM;
} // unnamed namespace
#ifdef CONFIG_ENABLE_ESP32_BLE_CONTROLLER
ChipDeviceScanner & mDeviceScanner = Internal::ChipDeviceScanner::GetInstance();
#endif
BLEManagerImpl BLEManagerImpl::sInstance;
const struct ble_gatt_svc_def BLEManagerImpl::CHIPoBLEGATTAttrs[] = {
{ .type = BLE_GATT_SVC_TYPE_PRIMARY,
.uuid = (ble_uuid_t *) (&ShortUUID_CHIPoBLEService),
.characteristics =
(struct ble_gatt_chr_def[]){
{
.uuid = (ble_uuid_t *) (&UUID128_CHIPoBLEChar_RX),
.access_cb = gatt_svr_chr_access,
.flags = BLE_GATT_CHR_F_WRITE,
.val_handle = &sInstance.mRXCharAttrHandle,
},
{
.uuid = (ble_uuid_t *) (&UUID_CHIPoBLEChar_TX),
.access_cb = gatt_svr_chr_access,
.flags = BLE_GATT_CHR_F_READ | BLE_GATT_CHR_F_INDICATE,
.val_handle = &sInstance.mTXCharCCCDAttrHandle,
},
#if CHIP_ENABLE_ADDITIONAL_DATA_ADVERTISING
{
.uuid = (ble_uuid_t *) (&UUID_CHIPoBLEChar_C3),
.access_cb = gatt_svr_chr_access_additional_data,
.flags = BLE_GATT_CHR_F_READ,
.val_handle = &sInstance.mC3CharAttrHandle,
},
#endif
{
0, /* No more characteristics in this service */
},
} },
{
0, /* No more services. */
},
};
#ifdef CONFIG_ENABLE_ESP32_BLE_CONTROLLER
void BLEManagerImpl::HandleConnectFailed(CHIP_ERROR error)
{
if (sInstance.mIsCentral)
{
ChipDeviceEvent event;
event.Type = DeviceEventType::kPlatformESP32BLECentralConnectFailed;
event.Platform.BLECentralConnectFailed.mError = error;
PlatformMgr().PostEventOrDie(&event);
}
}
void BLEManagerImpl::CancelConnect(void)
{
int rc = ble_gap_conn_cancel();
VerifyOrReturn(rc == 0, ChipLogError(Ble, "Failed to cancel connection rc=%d", rc));
}
void BLEManagerImpl::HandleConnectTimeout(chip::System::Layer *, void * context)
{
CancelConnect();
BLEManagerImpl::HandleConnectFailed(CHIP_ERROR_TIMEOUT);
}
void BLEManagerImpl::ConnectDevice(const ble_addr_t & addr, uint16_t timeout)
{
int rc;
uint8_t ownAddrType;
rc = ble_hs_id_infer_auto(0, &ownAddrType);
if (rc != 0)
{
ChipLogError(Ble, "Failed to infer own address type rc=%d", rc);
return;
}
rc = ble_gap_connect(ownAddrType, &addr, (timeout * 1000), NULL, ble_svr_gap_event, NULL);
if (rc != 0)
{
ChipLogError(Ble, "Failed to connect to rc=%d", rc);
}
}
#endif
CHIP_ERROR BLEManagerImpl::_Init()
{
CHIP_ERROR err;
// Initialize the Chip BleLayer.
#ifdef CONFIG_ENABLE_ESP32_BLE_CONTROLLER
err = BleLayer::Init(this, this, this, &DeviceLayer::SystemLayer());
#else
err = BleLayer::Init(this, this, &DeviceLayer::SystemLayer());
#endif
SuccessOrExit(err);
mRXCharAttrHandle = 0;
#if CHIP_ENABLE_ADDITIONAL_DATA_ADVERTISING
mC3CharAttrHandle = 0;
#endif
mTXCharCCCDAttrHandle = 0;
#ifdef CONFIG_ENABLE_ESP32_BLE_CONTROLLER
mFlags.ClearAll().Set(Flags::kAdvertisingEnabled, CHIP_DEVICE_CONFIG_CHIPOBLE_ENABLE_ADVERTISING_AUTOSTART && !mIsCentral);
mFlags.Set(Flags::kFastAdvertisingEnabled, !mIsCentral);
#else
mFlags.ClearAll().Set(Flags::kAdvertisingEnabled, CHIP_DEVICE_CONFIG_CHIPOBLE_ENABLE_ADVERTISING_AUTOSTART);
mFlags.Set(Flags::kFastAdvertisingEnabled, true);
#endif
mNumGAPCons = 0;
memset(reinterpret_cast<void *>(mCons), 0, sizeof(mCons));
mServiceMode = ConnectivityManager::kCHIPoBLEServiceMode_Enabled;
memset(mDeviceName, 0, sizeof(mDeviceName));
PlatformMgr().ScheduleWork(DriveBLEState, 0);
exit:
return err;
}
void BLEManagerImpl::_Shutdown()
{
CancelBleAdvTimeoutTimer();
BleLayer::Shutdown();
// selectively setting kGATTServiceStarted flag, in order to notify the state machine to stop the CHIPoBLE GATT service
mFlags.ClearAll().Set(Flags::kGATTServiceStarted);
mServiceMode = ConnectivityManager::kCHIPoBLEServiceMode_Disabled;
PlatformMgr().ScheduleWork(DriveBLEState, 0);
}
CHIP_ERROR BLEManagerImpl::_SetAdvertisingEnabled(bool val)
{
CHIP_ERROR err = CHIP_NO_ERROR;
VerifyOrExit(mServiceMode != ConnectivityManager::kCHIPoBLEServiceMode_NotSupported, err = CHIP_ERROR_UNSUPPORTED_CHIP_FEATURE);
if (val)
{
StartBleAdvTimeoutTimer(CHIP_DEVICE_CONFIG_BLE_ADVERTISING_INTERVAL_CHANGE_TIME);
}
mFlags.Set(Flags::kFastAdvertisingEnabled, val);
mFlags.Set(Flags::kAdvertisingRefreshNeeded, 1);
mFlags.Set(Flags::kAdvertisingEnabled, val);
PlatformMgr().ScheduleWork(DriveBLEState, 0);
exit:
return err;
}
void BLEManagerImpl::BleAdvTimeoutHandler(System::Layer *, void *)
{
if (BLEMgrImpl().mFlags.Has(Flags::kFastAdvertisingEnabled))
{
ChipLogProgress(DeviceLayer, "bleAdv Timeout : Start slow advertisement");
BLEMgrImpl().mFlags.Set(Flags::kFastAdvertisingEnabled, 0);
BLEMgrImpl().mFlags.Set(Flags::kAdvertisingRefreshNeeded, 1);
#if CHIP_DEVICE_CONFIG_BLE_EXT_ADVERTISING
BLEMgrImpl().mFlags.Clear(Flags::kExtAdvertisingEnabled);
BLEMgrImpl().StartBleAdvTimeoutTimer(CHIP_DEVICE_CONFIG_BLE_EXT_ADVERTISING_INTERVAL_CHANGE_TIME_MS);
#endif
}
#if CHIP_DEVICE_CONFIG_BLE_EXT_ADVERTISING
else
{
ChipLogProgress(DeviceLayer, "bleAdv Timeout : Start extended advertisement");
BLEMgrImpl().mFlags.Set(Flags::kAdvertising);
BLEMgrImpl().mFlags.Set(Flags::kExtAdvertisingEnabled);
BLEMgr().SetAdvertisingMode(BLEAdvertisingMode::kSlowAdvertising);
BLEMgrImpl().mFlags.Set(Flags::kAdvertisingRefreshNeeded, 1);
}
#endif
PlatformMgr().ScheduleWork(DriveBLEState, 0);
}
CHIP_ERROR BLEManagerImpl::_SetAdvertisingMode(BLEAdvertisingMode mode)
{
switch (mode)
{
case BLEAdvertisingMode::kFastAdvertising:
mFlags.Set(Flags::kFastAdvertisingEnabled, true);
break;
case BLEAdvertisingMode::kSlowAdvertising:
mFlags.Set(Flags::kFastAdvertisingEnabled, false);
break;
default:
return CHIP_ERROR_INVALID_ARGUMENT;
}
mFlags.Set(Flags::kAdvertisingRefreshNeeded);
PlatformMgr().ScheduleWork(DriveBLEState, 0);
return CHIP_NO_ERROR;
}
CHIP_ERROR BLEManagerImpl::_GetDeviceName(char * buf, size_t bufSize)
{
if (strlen(mDeviceName) >= bufSize)
{
return CHIP_ERROR_BUFFER_TOO_SMALL;
}
strcpy(buf, mDeviceName);
return CHIP_NO_ERROR;
}
CHIP_ERROR BLEManagerImpl::_SetDeviceName(const char * deviceName)
{
CHIP_ERROR err = CHIP_NO_ERROR;
VerifyOrExit(mServiceMode != ConnectivityManager::kCHIPoBLEServiceMode_NotSupported, err = CHIP_ERROR_UNSUPPORTED_CHIP_FEATURE);
if (deviceName != NULL && deviceName[0] != 0)
{
if (strlen(deviceName) >= kMaxDeviceNameLength)
{
return CHIP_ERROR_INVALID_ARGUMENT;
}
strcpy(mDeviceName, deviceName);
mFlags.Set(Flags::kUseCustomDeviceName);
}
else
{
mDeviceName[0] = 0;
mFlags.Clear(Flags::kUseCustomDeviceName);
}
exit:
return err;
}
void BLEManagerImpl::_OnPlatformEvent(const ChipDeviceEvent * event)
{
switch (event->Type)
{
case DeviceEventType::kCHIPoBLESubscribe:
HandleSubscribeReceived(event->CHIPoBLESubscribe.ConId, &CHIP_BLE_SVC_ID, &Ble::CHIP_BLE_CHAR_2_UUID);
{
ChipDeviceEvent connectionEvent;
connectionEvent.Type = DeviceEventType::kCHIPoBLEConnectionEstablished;
PlatformMgr().PostEventOrDie(&connectionEvent);
}
break;
case DeviceEventType::kCHIPoBLEUnsubscribe:
HandleUnsubscribeReceived(event->CHIPoBLEUnsubscribe.ConId, &CHIP_BLE_SVC_ID, &Ble::CHIP_BLE_CHAR_2_UUID);
break;
case DeviceEventType::kCHIPoBLEWriteReceived:
HandleWriteReceived(event->CHIPoBLEWriteReceived.ConId, &CHIP_BLE_SVC_ID, &Ble::CHIP_BLE_CHAR_1_UUID,
PacketBufferHandle::Adopt(event->CHIPoBLEWriteReceived.Data));
break;
case DeviceEventType::kCHIPoBLEIndicateConfirm:
HandleIndicationConfirmation(event->CHIPoBLEIndicateConfirm.ConId, &CHIP_BLE_SVC_ID, &Ble::CHIP_BLE_CHAR_2_UUID);
break;
case DeviceEventType::kCHIPoBLEConnectionError:
HandleConnectionError(event->CHIPoBLEConnectionError.ConId, event->CHIPoBLEConnectionError.Reason);
break;
case DeviceEventType::kServiceProvisioningChange:
case DeviceEventType::kWiFiConnectivityChange:
// Force the advertising configuration to be refreshed to reflect new provisioning state.
ChipLogProgress(DeviceLayer, "Updating advertising data");
mFlags.Clear(Flags::kAdvertisingConfigured);
mFlags.Set(Flags::kAdvertisingRefreshNeeded);
DriveBLEState();
break;
default:
#ifdef CONFIG_ENABLE_ESP32_BLE_CONTROLLER
HandlePlatformSpecificBLEEvent(event);
#endif
break;
}
}
#ifdef CONFIG_ENABLE_ESP32_BLE_CONTROLLER
void BLEManagerImpl::HandlePlatformSpecificBLEEvent(const ChipDeviceEvent * apEvent)
{
CHIP_ERROR err = CHIP_NO_ERROR;
ChipLogProgress(DeviceLayer, "HandlePlatformSpecificBLEEvent %d", apEvent->Type);
switch (apEvent->Type)
{
case DeviceEventType::kPlatformESP32BLECentralConnected:
if (BLEManagerImpl::mBLEScanConfig.mBleScanState == BleScanState::kConnecting)
{
BleConnectionDelegate::OnConnectionComplete(mBLEScanConfig.mAppState,
apEvent->Platform.BLECentralConnected.mConnection);
CleanScanConfig();
}
break;
case DeviceEventType::kPlatformESP32BLECentralConnectFailed:
if (BLEManagerImpl::mBLEScanConfig.mBleScanState == BleScanState::kConnecting)
{
BleConnectionDelegate::OnConnectionError(mBLEScanConfig.mAppState, apEvent->Platform.BLECentralConnectFailed.mError);
CleanScanConfig();
}
break;
case DeviceEventType::kPlatformESP32BLEWriteComplete:
HandleWriteConfirmation(apEvent->Platform.BLEWriteComplete.mConnection, &CHIP_BLE_SVC_ID, &Ble::CHIP_BLE_CHAR_1_UUID);
break;
case DeviceEventType::kPlatformESP32BLESubscribeOpComplete:
if (apEvent->Platform.BLESubscribeOpComplete.mIsSubscribed)
HandleSubscribeComplete(apEvent->Platform.BLESubscribeOpComplete.mConnection, &CHIP_BLE_SVC_ID,
&Ble::CHIP_BLE_CHAR_2_UUID);
else
HandleUnsubscribeComplete(apEvent->Platform.BLESubscribeOpComplete.mConnection, &CHIP_BLE_SVC_ID,
&Ble::CHIP_BLE_CHAR_2_UUID);
break;
case DeviceEventType::kPlatformESP32BLEIndicationReceived:
HandleIndicationReceived(apEvent->Platform.BLEIndicationReceived.mConnection, &CHIP_BLE_SVC_ID, &Ble::CHIP_BLE_CHAR_2_UUID,
PacketBufferHandle::Adopt(apEvent->Platform.BLEIndicationReceived.mData));
break;
default:
break;
}
if (err != CHIP_NO_ERROR)
{
ChipLogError(DeviceLayer, "Disabling CHIPoBLE service due to error: %s", ErrorStr(err));
mServiceMode = ConnectivityManager::kCHIPoBLEServiceMode_Disabled;
}
}
static int OnUnsubscribeCharComplete(uint16_t conn_handle, const struct ble_gatt_error * error, struct ble_gatt_attr * attr,
void * arg)
{
ChipLogProgress(DeviceLayer, "Subscribe complete: conn_handle=%d, error=%d, attr_handle=%d", conn_handle, error->status,
attr->handle);
ChipDeviceEvent event;
event.Type = DeviceEventType::kPlatformESP32BLESubscribeOpComplete;
event.Platform.BLESubscribeOpComplete.mConnection = conn_handle;
event.Platform.BLESubscribeOpComplete.mIsSubscribed = false;
PlatformMgr().PostEventOrDie(&event);
return 0;
}
static int OnSubscribeCharComplete(uint16_t conn_handle, const struct ble_gatt_error * error, struct ble_gatt_attr * attr,
void * arg)
{
ChipLogProgress(DeviceLayer, "Subscribe complete: conn_handle=%d, error=%d, attr_handle=%d", conn_handle, error->status,
attr->handle);
ChipDeviceEvent event;
event.Type = DeviceEventType::kPlatformESP32BLESubscribeOpComplete;
event.Platform.BLESubscribeOpComplete.mConnection = conn_handle;
event.Platform.BLESubscribeOpComplete.mIsSubscribed = true;
PlatformMgr().PostEventOrDie(&event);
return 0;
}
#endif
bool BLEManagerImpl::SubscribeCharacteristic(BLE_CONNECTION_OBJECT conId, const ChipBleUUID * svcId, const ChipBleUUID * charId)
{
#ifdef CONFIG_ENABLE_ESP32_BLE_CONTROLLER
const struct peer_dsc * dsc;
uint8_t value[2];
int rc;
struct peer * peer = peer_find(conId);
if (peer == nullptr)
{
return false;
}
dsc = peer_dsc_find_uuid(peer, (ble_uuid_t *) (&ShortUUID_CHIPoBLEService), (ble_uuid_t *) (&UUID_CHIPoBLEChar_TX),
(ble_uuid_t *) (&ShortUUID_CHIPoBLE_CharTx_Desc));
if (dsc == nullptr)
{
ChipLogError(Ble, "Peer does not have CCCD");
ble_gap_terminate(peer->conn_handle, BLE_ERR_REM_USER_CONN_TERM);
return false;
}
value[0] = 0x02;
value[1] = 0x00;
rc = ble_gattc_write_flat(peer->conn_handle, dsc->dsc.handle, value, sizeof(value), OnSubscribeCharComplete, NULL);
if (rc != 0)
{
ChipLogError(Ble, "ble_gattc_write_flat failed: %d", rc);
ble_gap_terminate(peer->conn_handle, BLE_ERR_REM_USER_CONN_TERM);
return false;
}
return true;
#else
return false;
#endif
}
bool BLEManagerImpl::UnsubscribeCharacteristic(BLE_CONNECTION_OBJECT conId, const ChipBleUUID * svcId, const ChipBleUUID * charId)
{
#ifdef CONFIG_ENABLE_ESP32_BLE_CONTROLLER
const struct peer_dsc * dsc;
uint8_t value[2];
int rc;
struct peer * peer = peer_find(conId);
if (peer == nullptr)
{
return false;
}
dsc = peer_dsc_find_uuid(peer, (ble_uuid_t *) (&ShortUUID_CHIPoBLEService), (ble_uuid_t *) (&UUID_CHIPoBLEChar_TX),
(ble_uuid_t *) (&ShortUUID_CHIPoBLE_CharTx_Desc));
if (dsc == nullptr)
{
ChipLogError(Ble, "Peer does not have CCCD");
ble_gap_terminate(peer->conn_handle, BLE_ERR_REM_USER_CONN_TERM);
return false;
}
value[0] = 0x00;
value[1] = 0x00;
rc = ble_gattc_write_flat(peer->conn_handle, dsc->dsc.handle, value, sizeof(value), OnUnsubscribeCharComplete, NULL);
if (rc != 0)
{
ChipLogError(Ble, "ble_gattc_write_flat failed: %d", rc);
ble_gap_terminate(peer->conn_handle, BLE_ERR_REM_USER_CONN_TERM);
return false;
}
return true;
#else
return false;
#endif
}
bool BLEManagerImpl::CloseConnection(BLE_CONNECTION_OBJECT conId)
{
CHIP_ERROR err;
ChipLogProgress(DeviceLayer, "Closing BLE GATT connection (con %u)", conId);
// Signal the ESP BLE layer to close the conneecction.
err = MapBLEError(ble_gap_terminate(conId, BLE_ERR_REM_USER_CONN_TERM));
if (err != CHIP_NO_ERROR)
{
ChipLogError(DeviceLayer, "ble_gap_terminate() failed: %s", ErrorStr(err));
}
#ifndef CONFIG_ENABLE_ESP32_BLE_CONTROLLER
// Force a refresh of the advertising state.
mFlags.Set(Flags::kAdvertisingRefreshNeeded);
mFlags.Clear(Flags::kAdvertisingConfigured);
PlatformMgr().ScheduleWork(DriveBLEState, 0);
#endif
return (err == CHIP_NO_ERROR);
}
uint16_t BLEManagerImpl::GetMTU(BLE_CONNECTION_OBJECT conId) const
{
return ble_att_mtu(conId);
}
bool BLEManagerImpl::SendIndication(BLE_CONNECTION_OBJECT conId, const ChipBleUUID * svcId, const ChipBleUUID * charId,
chip::System::PacketBufferHandle data)
{
CHIP_ERROR err = CHIP_NO_ERROR;
struct os_mbuf * om;
VerifyOrExit(IsSubscribed(conId), err = CHIP_ERROR_INVALID_ARGUMENT);
ESP_LOGD(TAG, "Sending indication for CHIPoBLE TX characteristic (con %u, len %u)", conId, data->DataLength());
// For BLE, the buffer is capped at UINT16_MAX. Nevertheless, have a verify
// check before the cast to uint16_t.
VerifyOrExit(CanCastTo<uint16_t>(data->DataLength()), err = CHIP_ERROR_MESSAGE_TOO_LONG);
om = ble_hs_mbuf_from_flat(data->Start(), static_cast<uint16_t>(data->DataLength()));
if (om == NULL)
{
ChipLogError(DeviceLayer, "ble_hs_mbuf_from_flat failed:");
err = CHIP_ERROR_NO_MEMORY;
ExitNow();
}
err = MapBLEError(ble_gattc_indicate_custom(conId, mTXCharCCCDAttrHandle, om));
if (err != CHIP_NO_ERROR)
{
ChipLogError(DeviceLayer, "ble_gattc_indicate_custom() failed: %s", ErrorStr(err));
ExitNow();
}
exit:
if (err != CHIP_NO_ERROR)
{
ChipLogError(DeviceLayer, "BLEManagerImpl::SendIndication() failed: %s", ErrorStr(err));
return false;
}
return true;
}
#ifdef CONFIG_ENABLE_ESP32_BLE_CONTROLLER
static int OnWriteComplete(uint16_t conn_handle, const struct ble_gatt_error * error, struct ble_gatt_attr * attr, void * arg)
{
ChipLogDetail(Ble, "Write complete; status:%d conn_handle:%d attr_handle:%d", error->status, conn_handle, attr->handle);
ChipDeviceEvent event;
event.Type = DeviceEventType::kPlatformESP32BLEWriteComplete;
event.Platform.BLEWriteComplete.mConnection = conn_handle;
CHIP_ERROR err = PlatformMgr().PostEvent(&event);
if (err != CHIP_NO_ERROR)
{
return 1;
}
return 0;
}
#endif
bool BLEManagerImpl::SendWriteRequest(BLE_CONNECTION_OBJECT conId, const ChipBleUUID * svcId, const ChipBleUUID * charId,
chip::System::PacketBufferHandle pBuf)
{
#ifdef CONFIG_ENABLE_ESP32_BLE_CONTROLLER
const struct peer_chr * chr;
int rc;
const struct peer * peer = peer_find(conId);
chr = peer_chr_find_uuid(peer, (ble_uuid_t *) (&ShortUUID_CHIPoBLEService), (ble_uuid_t *) (&UUID128_CHIPoBLEChar_RX));
if (chr == nullptr)
{
ChipLogError(Ble, "Peer does not have RX characteristic");
ble_gap_terminate(peer->conn_handle, BLE_ERR_REM_USER_CONN_TERM);
return false;
}
rc = ble_gattc_write_flat(conId, chr->chr.val_handle, pBuf->Start(), pBuf->DataLength(), OnWriteComplete, this);
if (rc != 0)
{
ChipLogError(Ble, "ble_gattc_write_flat failed: %d", rc);
ble_gap_terminate(peer->conn_handle, BLE_ERR_REM_USER_CONN_TERM);
return false;
}
return true;
#else
return false;
#endif
}
void BLEManagerImpl::NotifyChipConnectionClosed(BLE_CONNECTION_OBJECT conId) {}
CHIP_ERROR BLEManagerImpl::MapBLEError(int bleErr)
{
switch (bleErr)
{
case ESP_OK:
return CHIP_NO_ERROR;
case BLE_HS_EMSGSIZE:
return CHIP_ERROR_BUFFER_TOO_SMALL;
case BLE_HS_ENOMEM:
case ESP_ERR_NO_MEM:
return CHIP_ERROR_NO_MEMORY;
case BLE_HS_ENOTCONN:
return CHIP_ERROR_NOT_CONNECTED;
case BLE_HS_ENOTSUP:
return CHIP_ERROR_UNSUPPORTED_CHIP_FEATURE;
case BLE_HS_EAPP:
return CHIP_ERROR_INCORRECT_STATE;
case BLE_HS_EBADDATA:
return CHIP_ERROR_DATA_NOT_ALIGNED;
case BLE_HS_ETIMEOUT:
return CHIP_ERROR_TIMEOUT;
case BLE_HS_ENOADDR:
return CHIP_ERROR_INVALID_ADDRESS;
case ESP_ERR_INVALID_ARG:
return CHIP_ERROR_INVALID_ARGUMENT;
default:
return CHIP_ERROR(ChipError::Range::kPlatform, CHIP_DEVICE_CONFIG_ESP32_BLE_ERROR_MIN + bleErr);
}
}
void BLEManagerImpl::CancelBleAdvTimeoutTimer(void)
{
if (SystemLayer().IsTimerActive(BleAdvTimeoutHandler, nullptr))
{
SystemLayer().CancelTimer(BleAdvTimeoutHandler, nullptr);
}
}
void BLEManagerImpl::StartBleAdvTimeoutTimer(uint32_t aTimeoutInMs)
{
CancelBleAdvTimeoutTimer();
CHIP_ERROR err = SystemLayer().StartTimer(System::Clock::Milliseconds32(aTimeoutInMs), BleAdvTimeoutHandler, nullptr);
if ((err != CHIP_NO_ERROR))
{
ChipLogError(DeviceLayer, "Failed to start BledAdv timeout timer");
}
}
void BLEManagerImpl::DriveBLEState(void)
{
CHIP_ERROR err = CHIP_NO_ERROR;
// Perform any initialization actions that must occur after the Chip task is running.
if (!mFlags.Has(Flags::kAsyncInitCompleted))
{
mFlags.Set(Flags::kAsyncInitCompleted);
}
// Initializes the ESP BLE layer if needed.
if (mServiceMode == ConnectivityManager::kCHIPoBLEServiceMode_Enabled && !mFlags.Has(Flags::kESPBLELayerInitialized))
{
err = InitESPBleLayer();
SuccessOrExit(err);
// Add delay of 500msec while NimBLE host task gets up and running
{
vTaskDelay(500 / portTICK_PERIOD_MS);
}
}
// If the application has enabled CHIPoBLE and BLE advertising...
if (mServiceMode == ConnectivityManager::kCHIPoBLEServiceMode_Enabled &&
mFlags.Has(Flags::kAdvertisingEnabled)
#if CHIP_DEVICE_CONFIG_CHIPOBLE_SINGLE_CONNECTION
// and no connections are active...
&& (_NumConnections() == 0)
#endif
)
{
// Start/re-start advertising if not already advertising, or if the advertising state of the
// ESP BLE layer needs to be refreshed.
if (!mFlags.Has(Flags::kAdvertising) || mFlags.Has(Flags::kAdvertisingRefreshNeeded))
{
// Configure advertising data if it hasn't been done yet. This is an asynchronous step which
// must complete before advertising can be started. When that happens, this method will
// be called again, and execution will proceed to the code below.
if (!mFlags.Has(Flags::kAdvertisingConfigured))
{
err = ConfigureAdvertisingData();
if (err != CHIP_NO_ERROR)
{
ChipLogError(DeviceLayer, "Configure Adv Data failed: %s", ErrorStr(err));
ExitNow();
}
}
// Start advertising. This is also an asynchronous step.
ESP_LOGD(TAG, "NimBLE start advertising...");
err = StartAdvertising();
if (err != CHIP_NO_ERROR)
{
ChipLogError(DeviceLayer, "Start advertising failed: %s", ErrorStr(err));
ExitNow();
}
mFlags.Clear(Flags::kAdvertisingRefreshNeeded);
// Transition to the Advertising state...
if (!mFlags.Has(Flags::kAdvertising))
{
ChipLogProgress(DeviceLayer, "CHIPoBLE advertising started");
mFlags.Set(Flags::kAdvertising);
// Post a CHIPoBLEAdvertisingChange(Started) event.
{
ChipDeviceEvent advChange;
advChange.Type = DeviceEventType::kCHIPoBLEAdvertisingChange;
advChange.CHIPoBLEAdvertisingChange.Result = kActivity_Started;
err = PlatformMgr().PostEvent(&advChange);
}
}
}
}
// Otherwise stop advertising if needed...
else
{
if (mFlags.Has(Flags::kAdvertising))
{
if (ble_gap_adv_active())
{
err = MapBLEError(ble_gap_adv_stop());
if (err != CHIP_NO_ERROR)
{
ChipLogError(DeviceLayer, "ble_gap_adv_stop() failed: %s", ErrorStr(err));
ExitNow();
}
}
// mFlags.Clear(Flags::kAdvertisingRefreshNeeded);
// Transition to the not Advertising state...
if (mFlags.Has(Flags::kAdvertising))
{
mFlags.Clear(Flags::kAdvertising);
mFlags.Set(Flags::kFastAdvertisingEnabled, true);
ChipLogProgress(DeviceLayer, "CHIPoBLE advertising stopped");
// Post a CHIPoBLEAdvertisingChange(Stopped) event.
{
ChipDeviceEvent advChange;
advChange.Type = DeviceEventType::kCHIPoBLEAdvertisingChange;
advChange.CHIPoBLEAdvertisingChange.Result = kActivity_Stopped;
err = PlatformMgr().PostEvent(&advChange);
}
}
ExitNow();
}
}
// Stop the CHIPoBLE GATT service if needed.
if (mServiceMode != ConnectivityManager::kCHIPoBLEServiceMode_Enabled && mFlags.Has(Flags::kGATTServiceStarted))
{
DeinitESPBleLayer();
mFlags.ClearAll();
}
exit:
if (err != CHIP_NO_ERROR)
{
ChipLogError(DeviceLayer, "Disabling CHIPoBLE service due to error: %s", ErrorStr(err));
mServiceMode = ConnectivityManager::kCHIPoBLEServiceMode_Disabled;
}
}
void BLEManagerImpl::bleprph_on_reset(int reason)
{
ESP_LOGE(TAG, "Resetting state; reason=%d\n", reason);
}
CHIP_ERROR BLEManagerImpl::bleprph_set_random_addr(void)
{
ble_addr_t addr;
// Generates a new static random address
int rc = ble_hs_id_gen_rnd(0, &addr);
if (rc != 0)
{
ESP_LOGE(TAG, "Failed to generate random address err: %d", rc);
return CHIP_ERROR_INTERNAL;
}
// Set generated address
rc = ble_hs_id_set_rnd(addr.val);
if (rc != 0)
{
ESP_LOGE(TAG, "Failed to set random address err: %d", rc);
return CHIP_ERROR_INTERNAL;
}
// Try to configure the device with random static address
rc = ble_hs_util_ensure_addr(1);
if (rc != 0)
{
ESP_LOGE(TAG, "Failed to configure random address err: %d", rc);
return CHIP_ERROR_INTERNAL;
}
return CHIP_NO_ERROR;
}
void BLEManagerImpl::bleprph_on_sync(void)
{
ESP_LOGI(TAG, "BLE host-controller synced");
xSemaphoreGive(semaphoreHandle);
}
void BLEManagerImpl::bleprph_host_task(void * param)
{
ESP_LOGD(TAG, "BLE Host Task Started");
/* This function will return only when nimble_port_stop() is executed */
nimble_port_run();
nimble_port_freertos_deinit();
}
CHIP_ERROR BLEManagerImpl::InitESPBleLayer(void)
{
CHIP_ERROR err = CHIP_NO_ERROR;
VerifyOrExit(!mFlags.Has(Flags::kESPBLELayerInitialized), /* */);
semaphoreHandle = xSemaphoreCreateBinary();
if (semaphoreHandle == NULL)
{
err = CHIP_ERROR_NO_MEMORY;
ESP_LOGE(TAG, "Failed to create semaphore");
ExitNow();
}
for (int i = 0; i < kMaxConnections; i++)
{
mSubscribedConIds[i] = BLE_CONNECTION_UNINITIALIZED;
}
#if ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(5, 0, 0)
err = MapBLEError(esp_nimble_hci_and_controller_init());
SuccessOrExit(err);
#endif
nimble_port_init();
/* Initialize the NimBLE host configuration. */
ble_hs_cfg.reset_cb = bleprph_on_reset;
ble_hs_cfg.sync_cb = bleprph_on_sync;
ble_hs_cfg.store_status_cb = ble_store_util_status_rr;
ble_hs_cfg.sm_bonding = 1;
ble_hs_cfg.sm_our_key_dist = BLE_SM_PAIR_KEY_DIST_ENC | BLE_SM_PAIR_KEY_DIST_ID;
ble_hs_cfg.sm_their_key_dist = BLE_SM_PAIR_KEY_DIST_ENC | BLE_SM_PAIR_KEY_DIST_ID;
// Register the CHIPoBLE GATT attributes with the ESP BLE layer if needed.
if (mServiceMode == ConnectivityManager::kCHIPoBLEServiceMode_Enabled)
{
ble_svc_gap_init();
ble_svc_gatt_init();
err = MapBLEError(ble_gatts_count_cfg(CHIPoBLEGATTAttrs));
if (err != CHIP_NO_ERROR)
{
ChipLogError(DeviceLayer, "ble_gatts_count_cfg failed: %s", ErrorStr(err));
ExitNow();
}
err = MapBLEError(ble_gatts_add_svcs(CHIPoBLEGATTAttrs));
if (err != CHIP_NO_ERROR)
{
ChipLogError(DeviceLayer, "ble_gatts_add_svcs failed: %s", ErrorStr(err));
ExitNow();
}
}
nimble_port_freertos_init(bleprph_host_task);
xSemaphoreTake(semaphoreHandle, portMAX_DELAY);
vSemaphoreDelete(semaphoreHandle);
semaphoreHandle = NULL;
sInstance.mFlags.Set(Flags::kESPBLELayerInitialized);
sInstance.mFlags.Set(Flags::kGATTServiceStarted);
err = bleprph_set_random_addr();
exit:
return err;
}
void BLEManagerImpl::DeinitESPBleLayer()
{
VerifyOrReturn(DeinitBLE() == CHIP_NO_ERROR);
BLEManagerImpl::ClaimBLEMemory(nullptr, nullptr);
}
void BLEManagerImpl::ClaimBLEMemory(System::Layer *, void *)
{
TaskHandle_t handle = xTaskGetHandle("nimble_host");
if (handle)
{
ChipLogDetail(DeviceLayer, "Schedule ble memory reclaiming since nimble host is still running");
// Rescheduling it for later, 2 seconds is an arbitrary value, keeping it a bit more so that
// we dont have to reschedule it again
SystemLayer().StartTimer(System::Clock::Seconds32(2), ClaimBLEMemory, nullptr);
}
else
{
// Free up all the space occupied by ble and add it to heap
esp_err_t err = ESP_OK;
#ifdef CONFIG_IDF_TARGET_ESP32
err = esp_bt_mem_release(ESP_BT_MODE_BTDM);
#elif defined(CONFIG_IDF_TARGET_ESP32C2) || defined(CONFIG_IDF_TARGET_ESP32C3) || defined(CONFIG_IDF_TARGET_ESP32S3) || \
defined(CONFIG_IDF_TARGET_ESP32H2) || defined(CONFIG_IDF_TARGET_ESP32C6)
err = esp_bt_mem_release(ESP_BT_MODE_BLE);
#endif
VerifyOrReturn(err == ESP_OK, ChipLogError(DeviceLayer, "BLE deinit failed"));
ChipLogProgress(DeviceLayer, "BLE deinit successful and memory reclaimed");
ChipDeviceEvent event;
event.Type = DeviceEventType::kBLEDeinitialized;
VerifyOrDo(CHIP_NO_ERROR == PlatformMgr().PostEvent(&event), ChipLogError(DeviceLayer, "Failed to post BLE deinit event"));