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BLEManagerImpl.cpp
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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.
*/
/* this file behaves like a config.h, comes first */
#include <platform/internal/CHIPDeviceLayerInternal.h>
#if CHIP_DEVICE_CONFIG_ENABLE_CHIPOBLE
#include "sl_component_catalog.h"
#include <platform/internal/BLEManager.h>
#include "FreeRTOS.h"
#include "rail.h"
extern "C" {
#include "sl_bluetooth.h"
}
#include "sl_bt_api.h"
#include "sl_bt_stack_config.h"
#include "sl_bt_stack_init.h"
#include "timers.h"
#include <ble/Ble.h>
#include <crypto/RandUtils.h>
#include <cstring>
#include <lib/support/CodeUtils.h>
#include <lib/support/logging/CHIPLogging.h>
#include <platform/CommissionableDataProvider.h>
#include <platform/DeviceInstanceInfoProvider.h>
#include <sl_bt_rtos_adaptation.h>
#if CHIP_ENABLE_ADDITIONAL_DATA_ADVERTISING
#include <setup_payload/AdditionalDataPayloadGenerator.h>
#endif
#include <headers/ProvisionChannel.h>
#include <headers/ProvisionManager.h>
using namespace ::chip;
using namespace ::chip::Ble;
namespace chip {
namespace DeviceLayer {
namespace Internal {
namespace {
#define CHIP_ADV_DATA_TYPE_FLAGS 0x01
#define CHIP_ADV_DATA_TYPE_UUID 0x03
#define CHIP_ADV_DATA_TYPE_NAME 0x09
#define CHIP_ADV_DATA_TYPE_SERVICE_DATA 0x16
#define CHIP_ADV_DATA_FLAGS 0x06
#define CHIP_ADV_DATA 0
#define CHIP_ADV_SCAN_RESPONSE_DATA 1
#define CHIP_ADV_SHORT_UUID_LEN 2
#define MAX_RESPONSE_DATA_LEN 31
#define MAX_ADV_DATA_LEN 31
// Timer Frequency used.
#define TIMER_CLK_FREQ ((uint32_t) 32768)
// Convert msec to timer ticks.
#define TIMER_MS_2_TIMERTICK(ms) ((TIMER_CLK_FREQ * ms) / 1000)
#define TIMER_S_2_TIMERTICK(s) (TIMER_CLK_FREQ * s)
#define BLE_MAX_BUFFER_SIZE (3076)
#define BLE_MAX_ADVERTISERS (1)
#define BLE_CONFIG_MAX_PERIODIC_ADVERTISING_SYNC (0)
#define BLE_CONFIG_MAX_SOFTWARE_TIMERS (4)
#define BLE_CONFIG_MIN_TX_POWER (-30)
#define BLE_CONFIG_MAX_TX_POWER (80)
#define BLE_CONFIG_RF_PATH_GAIN_TX (0)
#define BLE_CONFIG_RF_PATH_GAIN_RX (0)
// Default Connection parameters
#define BLE_CONFIG_MIN_INTERVAL (16) // Time = Value x 1.25 ms = 20ms
#define BLE_CONFIG_MAX_INTERVAL (80) // Time = Value x 1.25 ms = 100ms
#define BLE_CONFIG_LATENCY (0)
#define BLE_CONFIG_TIMEOUT (100) // Time = Value x 10 ms = 1s
#define BLE_CONFIG_MIN_CE_LENGTH (0) // Leave to min value
#define BLE_CONFIG_MAX_CE_LENGTH (0xFFFF) // Leave to max value
osTimerId_t sbleAdvTimeoutTimer; // SW timer
const uint8_t UUID_CHIPoBLEService[] = { 0xFB, 0x34, 0x9B, 0x5F, 0x80, 0x00, 0x00, 0x80,
0x00, 0x10, 0x00, 0x00, 0xF6, 0xFF, 0x00, 0x00 };
const uint8_t ShortUUID_CHIPoBLEService[] = { 0xF6, 0xFF };
bd_addr randomizedAddr = { 0 };
} // namespace
BLEManagerImpl BLEManagerImpl::sInstance;
CHIP_ERROR BLEManagerImpl::_Init()
{
// Initialize the CHIP BleLayer.
ReturnErrorOnFailure(BleLayer::Init(this, this, &DeviceLayer::SystemLayer()));
memset(mBleConnections, 0, sizeof(mBleConnections));
memset(mIndConfId, kUnusedIndex, sizeof(mIndConfId));
mServiceMode = ConnectivityManager::kCHIPoBLEServiceMode_Enabled;
// SW timer for BLE timeouts and interval change.
sbleAdvTimeoutTimer = osTimerNew(BleAdvTimeoutHandler, osTimerOnce, NULL, NULL);
mFlags.ClearAll().Set(Flags::kAdvertisingEnabled, CHIP_DEVICE_CONFIG_CHIPOBLE_ENABLE_ADVERTISING_AUTOSTART);
mFlags.Set(Flags::kFastAdvertisingEnabled, true);
// Check that an address was not already configured at boot.
// This covers the init-shutdown-init case to comply with the BLE address change at boot only requirement
bd_addr temp = { 0 };
if (memcmp(&randomizedAddr, &temp, sizeof(bd_addr)) == 0)
{
// Since a random address is not configured, configure one
uint64_t random = Crypto::GetRandU64();
// Copy random value to address. We don't care of the ordering since it's a random value.
memcpy(&randomizedAddr, &random, sizeof(randomizedAddr));
// Set two MSBs to 11 to properly the address - BLE Static Device Address requirement
randomizedAddr.addr[5] |= 0xC0;
}
PlatformMgr().ScheduleWork(DriveBLEState, 0);
return CHIP_NO_ERROR;
}
uint16_t BLEManagerImpl::_NumConnections(void)
{
uint16_t numCons = 0;
for (uint16_t i = 0; i < kMaxConnections; i++)
{
if (mBleConnections[i].allocated)
{
numCons++;
}
}
return numCons;
}
CHIP_ERROR BLEManagerImpl::_SetAdvertisingEnabled(bool val)
{
CHIP_ERROR err = CHIP_NO_ERROR;
VerifyOrExit(mServiceMode != ConnectivityManager::kCHIPoBLEServiceMode_NotSupported, err = CHIP_ERROR_UNSUPPORTED_CHIP_FEATURE);
if (mFlags.Has(Flags::kAdvertisingEnabled) != val)
{
mFlags.Set(Flags::kAdvertisingEnabled, val);
PlatformMgr().ScheduleWork(DriveBLEState, 0);
}
exit:
return err;
}
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::kRestartAdvertising);
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)
{
if (mServiceMode == ConnectivityManager::kCHIPoBLEServiceMode_NotSupported)
{
return 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::kDeviceNameSet);
mFlags.Set(Flags::kRestartAdvertising);
ChipLogProgress(DeviceLayer, "Setting device name to : \"%s\"", mDeviceName);
}
else
{
mDeviceName[0] = 0;
}
PlatformMgr().ScheduleWork(DriveBLEState, 0);
return CHIP_NO_ERROR;
}
void BLEManagerImpl::_OnPlatformEvent(const ChipDeviceEvent * event)
{
switch (event->Type)
{
case DeviceEventType::kCHIPoBLESubscribe: {
ChipDeviceEvent connEstEvent;
ChipLogProgress(DeviceLayer, "_OnPlatformEvent kCHIPoBLESubscribe");
HandleSubscribeReceived(event->CHIPoBLESubscribe.ConId, &CHIP_BLE_SVC_ID, &Ble::CHIP_BLE_CHAR_2_UUID);
connEstEvent.Type = DeviceEventType::kCHIPoBLEConnectionEstablished;
PlatformMgr().PostEventOrDie(&connEstEvent);
}
break;
case DeviceEventType::kCHIPoBLEUnsubscribe: {
ChipLogProgress(DeviceLayer, "_OnPlatformEvent kCHIPoBLEUnsubscribe");
HandleUnsubscribeReceived(event->CHIPoBLEUnsubscribe.ConId, &CHIP_BLE_SVC_ID, &Ble::CHIP_BLE_CHAR_2_UUID);
}
break;
case DeviceEventType::kCHIPoBLEWriteReceived: {
ChipLogProgress(DeviceLayer, "_OnPlatformEvent kCHIPoBLEWriteReceived");
HandleWriteReceived(event->CHIPoBLEWriteReceived.ConId, &CHIP_BLE_SVC_ID, &Ble::CHIP_BLE_CHAR_1_UUID,
PacketBufferHandle::Adopt(event->CHIPoBLEWriteReceived.Data));
}
break;
case DeviceEventType::kCHIPoBLEConnectionError: {
ChipLogProgress(DeviceLayer, "_OnPlatformEvent kCHIPoBLEConnectionError");
HandleConnectionError(event->CHIPoBLEConnectionError.ConId, event->CHIPoBLEConnectionError.Reason);
}
break;
case DeviceEventType::kCHIPoBLEIndicateConfirm: {
ChipLogProgress(DeviceLayer, "_OnPlatformEvent kCHIPoBLEIndicateConfirm");
HandleIndicationConfirmation(event->CHIPoBLEIndicateConfirm.ConId, &CHIP_BLE_SVC_ID, &Ble::CHIP_BLE_CHAR_2_UUID);
}
break;
default:
ChipLogProgress(DeviceLayer, "_OnPlatformEvent default: event->Type = %d", event->Type);
break;
}
}
CHIP_ERROR BLEManagerImpl::SubscribeCharacteristic(BLE_CONNECTION_OBJECT conId, const ChipBleUUID * svcId,
const ChipBleUUID * charId)
{
ChipLogProgress(DeviceLayer, "BLEManagerImpl::SubscribeCharacteristic() not supported");
return CHIP_ERROR_NOT_IMPLEMENTED;
}
CHIP_ERROR BLEManagerImpl::UnsubscribeCharacteristic(BLE_CONNECTION_OBJECT conId, const ChipBleUUID * svcId,
const ChipBleUUID * charId)
{
ChipLogProgress(DeviceLayer, "BLEManagerImpl::UnsubscribeCharacteristic() not supported");
return CHIP_ERROR_NOT_IMPLEMENTED;
}
CHIP_ERROR BLEManagerImpl::CloseConnection(BLE_CONNECTION_OBJECT conId)
{
CHIP_ERROR err = CHIP_NO_ERROR;
sl_status_t ret;
ChipLogProgress(DeviceLayer, "Closing BLE GATT connection (con %u)", conId);
ret = sl_bt_connection_close(conId);
err = MapBLEError(ret);
if (err != CHIP_NO_ERROR)
{
ChipLogError(DeviceLayer, "sl_bt_connection_close() failed: %s", ErrorStr(err));
}
return err;
}
uint16_t BLEManagerImpl::GetMTU(BLE_CONNECTION_OBJECT conId) const
{
CHIPoBLEConState * conState = const_cast<BLEManagerImpl *>(this)->GetConnectionState(conId);
return (conState != NULL) ? conState->mtu : 0;
}
CHIP_ERROR BLEManagerImpl::SendIndication(BLE_CONNECTION_OBJECT conId, const ChipBleUUID * svcId, const ChipBleUUID * charId,
PacketBufferHandle data)
{
CHIP_ERROR err = CHIP_NO_ERROR;
CHIPoBLEConState * conState = GetConnectionState(conId);
sl_status_t ret;
uint16_t cId = (UUIDsMatch(&Ble::CHIP_BLE_CHAR_1_UUID, charId) ? gattdb_CHIPoBLEChar_Rx : gattdb_CHIPoBLEChar_Tx);
uint8_t timerHandle = GetTimerHandle(conId, true);
VerifyOrExit(((conState != NULL) && (conState->subscribed != 0)), err = CHIP_ERROR_INVALID_ARGUMENT);
VerifyOrExit(timerHandle != kMaxConnections, err = CHIP_ERROR_NO_MEMORY);
// start timer for light indication confirmation. Long delay for spake2 indication
sl_bt_system_set_lazy_soft_timer(TIMER_S_2_TIMERTICK(6), 0, timerHandle, true);
ret = sl_bt_gatt_server_send_indication(conId, cId, (data->DataLength()), data->Start());
err = MapBLEError(ret);
exit:
return err;
}
CHIP_ERROR BLEManagerImpl::SendWriteRequest(BLE_CONNECTION_OBJECT conId, const ChipBleUUID * svcId, const ChipBleUUID * charId,
PacketBufferHandle pBuf)
{
ChipLogProgress(DeviceLayer, "BLEManagerImpl::SendWriteRequest() not supported");
return CHIP_ERROR_NOT_IMPLEMENTED;
}
void BLEManagerImpl::NotifyChipConnectionClosed(BLE_CONNECTION_OBJECT conId)
{
CloseConnection(conId);
}
CHIP_ERROR BLEManagerImpl::MapBLEError(int bleErr)
{
switch (bleErr)
{
case SL_STATUS_OK:
return CHIP_NO_ERROR;
case SL_STATUS_BT_ATT_INVALID_ATT_LENGTH:
return CHIP_ERROR_INVALID_STRING_LENGTH;
case SL_STATUS_INVALID_PARAMETER:
return CHIP_ERROR_INVALID_ARGUMENT;
case SL_STATUS_INVALID_STATE:
return CHIP_ERROR_INCORRECT_STATE;
case SL_STATUS_NOT_SUPPORTED:
return CHIP_ERROR_UNSUPPORTED_CHIP_FEATURE;
default:
return CHIP_ERROR(ChipError::Range::kPlatform, bleErr + CHIP_DEVICE_CONFIG_SILABS_BLE_ERROR_MIN);
}
}
void BLEManagerImpl::DriveBLEState(void)
{
CHIP_ERROR err = CHIP_NO_ERROR;
// Check if BLE stack is initialized
VerifyOrExit(mFlags.Has(Flags::kEFRBLEStackInitialized), /* */);
// Start advertising if needed...
if (mServiceMode == ConnectivityManager::kCHIPoBLEServiceMode_Enabled && mFlags.Has(Flags::kAdvertisingEnabled) &&
NumConnections() < kMaxConnections)
{
// Start/re-start advertising if not already started, or if there is a pending change
// to the advertising configuration.
if (!mFlags.Has(Flags::kAdvertising) || mFlags.Has(Flags::kRestartAdvertising))
{
err = StartAdvertising();
SuccessOrExit(err);
}
}
// Otherwise, stop advertising if it is enabled.
else if (mFlags.Has(Flags::kAdvertising))
{
err = StopAdvertising();
SuccessOrExit(err);
}
exit:
if (err != CHIP_NO_ERROR)
{
ChipLogError(DeviceLayer, "Disabling CHIPoBLE service due to error: %s", ErrorStr(err));
mServiceMode = ConnectivityManager::kCHIPoBLEServiceMode_Disabled;
}
}
CHIP_ERROR BLEManagerImpl::ConfigureAdvertisingData(void)
{
sl_status_t ret;
ChipBLEDeviceIdentificationInfo mDeviceIdInfo;
CHIP_ERROR err;
uint8_t responseData[MAX_RESPONSE_DATA_LEN];
uint8_t advData[MAX_ADV_DATA_LEN];
uint32_t index = 0;
uint32_t mDeviceNameLength = 0;
uint8_t mDeviceIdInfoLength = 0;
VerifyOrExit((kMaxDeviceNameLength + 1) < UINT8_MAX, err = CHIP_ERROR_INVALID_ARGUMENT);
memset(responseData, 0, MAX_RESPONSE_DATA_LEN);
memset(advData, 0, MAX_ADV_DATA_LEN);
err = ConfigurationMgr().GetBLEDeviceIdentificationInfo(mDeviceIdInfo);
SuccessOrExit(err);
if (!mFlags.Has(Flags::kDeviceNameSet))
{
uint16_t discriminator;
SuccessOrExit(err = GetCommissionableDataProvider()->GetSetupDiscriminator(discriminator));
snprintf(mDeviceName, sizeof(mDeviceName), "%s%04u", CHIP_DEVICE_CONFIG_BLE_DEVICE_NAME_PREFIX, discriminator);
mDeviceName[kMaxDeviceNameLength] = 0;
mDeviceNameLength = strlen(mDeviceName);
VerifyOrExit(mDeviceNameLength < kMaxDeviceNameLength, err = CHIP_ERROR_INVALID_ARGUMENT);
}
mDeviceNameLength = strlen(mDeviceName); // Device Name length + length field
VerifyOrExit(mDeviceNameLength < kMaxDeviceNameLength, err = CHIP_ERROR_INVALID_ARGUMENT);
static_assert((kUUIDTlvSize + kDeviceNameTlvSize) <= MAX_RESPONSE_DATA_LEN, "Scan Response buffer is too small");
mDeviceIdInfoLength = sizeof(mDeviceIdInfo); // Servicedatalen + length+ UUID (Short)
static_assert(sizeof(mDeviceIdInfo) + CHIP_ADV_SHORT_UUID_LEN + 1 <= UINT8_MAX, "Our length won't fit in a uint8_t");
static_assert(2 + CHIP_ADV_SHORT_UUID_LEN + sizeof(mDeviceIdInfo) + 1 <= MAX_ADV_DATA_LEN, "Our buffer is not big enough");
index = 0;
advData[index++] = 0x02; // length
advData[index++] = CHIP_ADV_DATA_TYPE_FLAGS; // AD type : flags
advData[index++] = CHIP_ADV_DATA_FLAGS; // AD value
advData[index++] = static_cast<uint8_t>(mDeviceIdInfoLength + CHIP_ADV_SHORT_UUID_LEN + 1); // AD length
advData[index++] = CHIP_ADV_DATA_TYPE_SERVICE_DATA; // AD type : Service Data
advData[index++] = ShortUUID_CHIPoBLEService[0]; // AD value
advData[index++] = ShortUUID_CHIPoBLEService[1];
#if CHIP_DEVICE_CONFIG_EXT_ADVERTISING
// Check for extended advertisement interval and redact VID/PID if past the initial period.
if (mFlags.Has(Flags::kExtAdvertisingEnabled))
{
mDeviceIdInfo.SetVendorId(0);
mDeviceIdInfo.SetProductId(0);
mDeviceIdInfo.SetExtendedAnnouncementFlag(true);
}
#endif
memcpy(&advData[index], (void *) &mDeviceIdInfo, mDeviceIdInfoLength); // AD value
index += mDeviceIdInfoLength;
#if CHIP_ENABLE_ADDITIONAL_DATA_ADVERTISING
ReturnErrorOnFailure(EncodeAdditionalDataTlv());
#endif
if (advertising_set_handle == 0xff)
{
ret = sl_bt_advertiser_create_set(&advertising_set_handle);
VerifyOrExit(ret == SL_STATUS_OK, {
err = MapBLEError(ret);
ChipLogError(DeviceLayer, "sl_bt_advertiser_create_set() failed: %s", ErrorStr(err));
});
ret =
sl_bt_advertiser_set_random_address(advertising_set_handle, sl_bt_gap_static_address, randomizedAddr, &randomizedAddr);
VerifyOrExit(ret == SL_STATUS_OK, {
err = MapBLEError(ret);
ChipLogError(DeviceLayer, "sl_bt_advertiser_set_random_address() failed: %s", ErrorStr(err));
});
ChipLogDetail(DeviceLayer, "BLE Static Device Address %02X:%02X:%02X:%02X:%02X:%02X", randomizedAddr.addr[5],
randomizedAddr.addr[4], randomizedAddr.addr[3], randomizedAddr.addr[2], randomizedAddr.addr[1],
randomizedAddr.addr[0]);
}
ret = sl_bt_legacy_advertiser_set_data(advertising_set_handle, sl_bt_advertiser_advertising_data_packet, index,
(uint8_t *) advData);
VerifyOrExit(ret == SL_STATUS_OK, {
err = MapBLEError(ret);
ChipLogError(DeviceLayer, "sl_bt_legacy_advertiser_set_data() - Advertising Data failed: %s", ErrorStr(err));
});
index = 0;
responseData[index++] = CHIP_ADV_SHORT_UUID_LEN + 1; // AD length
responseData[index++] = CHIP_ADV_DATA_TYPE_UUID; // AD type : uuid
responseData[index++] = ShortUUID_CHIPoBLEService[0]; // AD value
responseData[index++] = ShortUUID_CHIPoBLEService[1];
responseData[index++] = static_cast<uint8_t>(mDeviceNameLength + 1); // length
responseData[index++] = CHIP_ADV_DATA_TYPE_NAME; // AD type : name
memcpy(&responseData[index], mDeviceName, mDeviceNameLength); // AD value
index += mDeviceNameLength;
ret = sl_bt_legacy_advertiser_set_data(advertising_set_handle, sl_bt_advertiser_scan_response_packet, index,
(uint8_t *) responseData);
VerifyOrExit(ret == SL_STATUS_OK, {
err = MapBLEError(ret);
ChipLogError(DeviceLayer, "sl_bt_legacy_advertiser_set_data() - Scan Response failed: %s", ErrorStr(err));
});
err = MapBLEError(ret);
exit:
return err;
}
CHIP_ERROR BLEManagerImpl::StartAdvertising(void)
{
CHIP_ERROR err = CHIP_NO_ERROR;
sl_status_t ret = SL_STATUS_OK;
uint32_t interval_min = 0;
uint32_t interval_max = 0;
uint16_t numConnectionss = NumConnections();
bool postAdvChangeEvent = false;
uint8_t connectableAdv =
(numConnectionss < kMaxConnections) ? sl_bt_advertiser_connectable_scannable : sl_bt_advertiser_scannable_non_connectable;
// If already advertising, stop it, before changing values
if (mFlags.Has(Flags::kAdvertising))
{
sl_bt_advertiser_stop(advertising_set_handle);
}
else
{
ChipLogDetail(DeviceLayer, "Start BLE advertisement");
postAdvChangeEvent = true;
}
err = ConfigureAdvertisingData();
SuccessOrExit(err);
mFlags.Clear(Flags::kRestartAdvertising);
if (mFlags.Has(Flags::kFastAdvertisingEnabled))
{
interval_min = CHIP_DEVICE_CONFIG_BLE_FAST_ADVERTISING_INTERVAL_MIN;
interval_max = CHIP_DEVICE_CONFIG_BLE_FAST_ADVERTISING_INTERVAL_MAX;
}
else
{
#if CHIP_DEVICE_CONFIG_EXT_ADVERTISING
if (!mFlags.Has(Flags::kExtAdvertisingEnabled))
{
interval_min = CHIP_DEVICE_CONFIG_BLE_SLOW_ADVERTISING_INTERVAL_MIN;
interval_max = CHIP_DEVICE_CONFIG_BLE_SLOW_ADVERTISING_INTERVAL_MAX;
}
else
{
interval_min = CHIP_DEVICE_CONFIG_BLE_EXT_ADVERTISING_INTERVAL_MIN;
interval_max = CHIP_DEVICE_CONFIG_BLE_EXT_ADVERTISING_INTERVAL_MAX;
}
#else
interval_min = CHIP_DEVICE_CONFIG_BLE_SLOW_ADVERTISING_INTERVAL_MIN;
interval_max = CHIP_DEVICE_CONFIG_BLE_SLOW_ADVERTISING_INTERVAL_MAX;
#endif
}
ChipLogProgress(DeviceLayer, "Starting advertising with interval_min=%u, intverval_max=%u (units of 625us)",
static_cast<unsigned>(interval_min), static_cast<unsigned>(interval_max));
ret = sl_bt_advertiser_set_timing(advertising_set_handle, interval_min, interval_max, 0, 0);
err = MapBLEError(ret);
SuccessOrExit(err);
sl_bt_advertiser_configure(advertising_set_handle, 1);
ret = sl_bt_legacy_advertiser_start(advertising_set_handle, connectableAdv);
err = MapBLEError(ret);
SuccessOrExit(err);
if (mFlags.Has(Flags::kFastAdvertisingEnabled))
{
StartBleAdvTimeoutTimer(CHIP_DEVICE_CONFIG_BLE_ADVERTISING_INTERVAL_CHANGE_TIME);
}
mFlags.Set(Flags::kAdvertising);
if (postAdvChangeEvent)
{
// Post CHIPoBLEAdvertisingChange event.
ChipDeviceEvent advChange;
advChange.Type = DeviceEventType::kCHIPoBLEAdvertisingChange;
advChange.CHIPoBLEAdvertisingChange.Result = kActivity_Started;
ReturnErrorOnFailure(PlatformMgr().PostEvent(&advChange));
}
exit:
return err;
}
CHIP_ERROR BLEManagerImpl::StopAdvertising(void)
{
CHIP_ERROR err = CHIP_NO_ERROR;
if (mFlags.Has(Flags::kAdvertising))
{
sl_status_t ret = SL_STATUS_OK;
mFlags.Clear(Flags::kAdvertising).Clear(Flags::kRestartAdvertising);
mFlags.Set(Flags::kFastAdvertisingEnabled, true);
ret = sl_bt_advertiser_stop(advertising_set_handle);
sl_bt_advertiser_clear_random_address(advertising_set_handle);
sl_bt_advertiser_delete_set(advertising_set_handle);
advertising_set_handle = 0xff;
err = MapBLEError(ret);
VerifyOrReturnError(err == CHIP_NO_ERROR, err);
CancelBleAdvTimeoutTimer();
// Post CHIPoBLEAdvertisingChange event.
ChipDeviceEvent advChange;
advChange.Type = DeviceEventType::kCHIPoBLEAdvertisingChange;
advChange.CHIPoBLEAdvertisingChange.Result = kActivity_Stopped;
err = PlatformMgr().PostEvent(&advChange);
}
return err;
}
void BLEManagerImpl::UpdateMtu(volatile sl_bt_msg_t * evt)
{
CHIPoBLEConState * bleConnState = GetConnectionState(evt->data.evt_gatt_mtu_exchanged.connection);
if (bleConnState != NULL)
{
// bleConnState->MTU is a 10-bit field inside a uint16_t. We're
// assigning to it from a uint16_t, and compilers warn about
// possibly not fitting. There's no way to suppress that warning
// via explicit cast; we have to disable the warning around the
// assignment.
//
// TODO: https://github.com/project-chip/connectedhomeip/issues/2569
// tracks making this safe with a check or explaining why no check
// is needed.
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wconversion"
bleConnState->mtu = evt->data.evt_gatt_mtu_exchanged.mtu;
#pragma GCC diagnostic pop
;
}
}
void BLEManagerImpl::HandleBootEvent(void)
{
mFlags.Set(Flags::kEFRBLEStackInitialized);
PlatformMgr().ScheduleWork(DriveBLEState, 0);
}
void BLEManagerImpl::HandleConnectEvent(volatile sl_bt_msg_t * evt)
{
sl_bt_evt_connection_opened_t * conn_evt = (sl_bt_evt_connection_opened_t *) &(evt->data);
uint8_t connHandle = conn_evt->connection;
uint8_t bondingHandle = conn_evt->bonding;
ChipLogProgress(DeviceLayer, "Connect Event for handle : %d", connHandle);
AddConnection(connHandle, bondingHandle);
PlatformMgr().ScheduleWork(DriveBLEState, 0);
}
void BLEManagerImpl::HandleConnectParams(volatile sl_bt_msg_t * evt)
{
sl_bt_evt_connection_parameters_t * con_param_evt = (sl_bt_evt_connection_parameters_t *) &(evt->data);
uint16_t desiredTimeout = con_param_evt->timeout < BLE_CONFIG_TIMEOUT ? BLE_CONFIG_TIMEOUT : con_param_evt->timeout;
// For better stability, renegotiate the connection parameters if the received ones from the central are outside
// of our defined constraints
if (desiredTimeout != con_param_evt->timeout || con_param_evt->interval < BLE_CONFIG_MIN_INTERVAL ||
con_param_evt->interval > BLE_CONFIG_MAX_INTERVAL)
{
ChipLogProgress(DeviceLayer, "Renegotiate BLE connection parameters to minInterval:%d, maxInterval:%d, timeout:%d",
BLE_CONFIG_MIN_INTERVAL, BLE_CONFIG_MAX_INTERVAL, desiredTimeout);
sl_bt_connection_set_parameters(con_param_evt->connection, BLE_CONFIG_MIN_INTERVAL, BLE_CONFIG_MAX_INTERVAL,
BLE_CONFIG_LATENCY, desiredTimeout, BLE_CONFIG_MIN_CE_LENGTH, BLE_CONFIG_MAX_CE_LENGTH);
}
PlatformMgr().ScheduleWork(DriveBLEState, 0);
}
void BLEManagerImpl::HandleConnectionCloseEvent(volatile sl_bt_msg_t * evt)
{
sl_bt_evt_connection_closed_t * conn_evt = (sl_bt_evt_connection_closed_t *) &(evt->data);
uint8_t connHandle = conn_evt->connection;
ChipLogProgress(DeviceLayer, "Disconnect Event for handle : %d", connHandle);
if (RemoveConnection(connHandle))
{
ChipDeviceEvent event;
event.Type = DeviceEventType::kCHIPoBLEConnectionError;
event.CHIPoBLEConnectionError.ConId = connHandle;
switch (conn_evt->reason)
{
case SL_STATUS_BT_CTRL_REMOTE_USER_TERMINATED:
case SL_STATUS_BT_CTRL_REMOTE_DEVICE_TERMINATED_CONNECTION_DUE_TO_LOW_RESOURCES:
case SL_STATUS_BT_CTRL_REMOTE_POWERING_OFF:
event.CHIPoBLEConnectionError.Reason = BLE_ERROR_REMOTE_DEVICE_DISCONNECTED;
break;
case SL_STATUS_BT_CTRL_CONNECTION_TERMINATED_BY_LOCAL_HOST:
event.CHIPoBLEConnectionError.Reason = BLE_ERROR_APP_CLOSED_CONNECTION;
break;
default:
event.CHIPoBLEConnectionError.Reason = BLE_ERROR_CHIPOBLE_PROTOCOL_ABORT;
break;
}
ChipLogProgress(DeviceLayer, "BLE GATT connection closed (con %u, reason %u)", connHandle, conn_evt->reason);
PlatformMgr().PostEventOrDie(&event);
// Arrange to re-enable connectable advertising in case it was disabled due to the
// maximum connection limit being reached.
mFlags.Set(Flags::kRestartAdvertising);
mFlags.Set(Flags::kFastAdvertisingEnabled);
PlatformMgr().ScheduleWork(DriveBLEState, 0);
}
}
void BLEManagerImpl::HandleWriteEvent(volatile sl_bt_msg_t * evt)
{
uint16_t attribute = evt->data.evt_gatt_server_user_write_request.characteristic;
bool do_provision = chip::DeviceLayer::Silabs::Provision::Manager::GetInstance().IsProvisionRequired();
ChipLogProgress(DeviceLayer, "Char Write Req, char : %d", attribute);
if (gattdb_CHIPoBLEChar_Rx == attribute)
{
if (do_provision)
{
chip::DeviceLayer::Silabs::Provision::Channel::Update(attribute);
chip::DeviceLayer::Silabs::Provision::Manager::GetInstance().Step();
}
else
{
HandleRXCharWrite(evt);
}
}
}
void BLEManagerImpl::HandleTXCharCCCDWrite(volatile sl_bt_msg_t * evt)
{
CHIP_ERROR err = CHIP_NO_ERROR;
CHIPoBLEConState * bleConnState;
bool isIndicationEnabled = false;
ChipDeviceEvent event;
bleConnState = GetConnectionState(evt->data.evt_gatt_server_user_write_request.connection);
VerifyOrExit(bleConnState != NULL, err = CHIP_ERROR_NO_MEMORY);
// Determine if the client is enabling or disabling notification/indication.
isIndicationEnabled = (evt->data.evt_gatt_server_characteristic_status.client_config_flags == sl_bt_gatt_indication);
ChipLogProgress(DeviceLayer, "HandleTXcharCCCDWrite - Config Flags value : %d",
evt->data.evt_gatt_server_characteristic_status.client_config_flags);
ChipLogProgress(DeviceLayer, "CHIPoBLE %s received", isIndicationEnabled ? "subscribe" : "unsubscribe");
if (isIndicationEnabled)
{
// If indications are not already enabled for the connection...
if (!bleConnState->subscribed)
{
bleConnState->subscribed = 1;
// Post an event to the CHIP queue to process either a CHIPoBLE Subscribe or Unsubscribe based on
// whether the client is enabling or disabling indications.
{
event.Type = DeviceEventType::kCHIPoBLESubscribe;
event.CHIPoBLESubscribe.ConId = evt->data.evt_gatt_server_user_write_request.connection;
err = PlatformMgr().PostEvent(&event);
}
}
}
else
{
bleConnState->subscribed = 0;
event.Type = DeviceEventType::kCHIPoBLEUnsubscribe;
event.CHIPoBLESubscribe.ConId = evt->data.evt_gatt_server_user_write_request.connection;
err = PlatformMgr().PostEvent(&event);
}
exit:
if (err != CHIP_NO_ERROR)
{
ChipLogError(DeviceLayer, "HandleTXCharCCCDWrite() failed: %s", ErrorStr(err));
}
}
void BLEManagerImpl::HandleRXCharWrite(volatile sl_bt_msg_t * evt)
{
CHIP_ERROR err = CHIP_NO_ERROR;
System::PacketBufferHandle buf;
uint16_t writeLen = evt->data.evt_gatt_server_user_write_request.value.len;
uint8_t * data = (uint8_t *) evt->data.evt_gatt_server_user_write_request.value.data;
// Copy the data to a packet buffer.
buf = System::PacketBufferHandle::NewWithData(data, writeLen, 0, 0);
VerifyOrExit(!buf.IsNull(), err = CHIP_ERROR_NO_MEMORY);
ChipLogDetail(DeviceLayer, "Write request/command received for CHIPoBLE RX characteristic (con %u, len %u)",
evt->data.evt_gatt_server_user_write_request.connection, buf->DataLength());
// Post an event to the CHIP queue to deliver the data into the CHIP stack.
{
ChipDeviceEvent event;
event.Type = DeviceEventType::kCHIPoBLEWriteReceived;
event.CHIPoBLEWriteReceived.ConId = evt->data.evt_gatt_server_user_write_request.connection;
event.CHIPoBLEWriteReceived.Data = std::move(buf).UnsafeRelease();
err = PlatformMgr().PostEvent(&event);
}
exit:
if (err != CHIP_NO_ERROR)
{
ChipLogError(DeviceLayer, "HandleRXCharWrite() failed: %s", ErrorStr(err));
}
}
void BLEManagerImpl::HandleTxConfirmationEvent(BLE_CONNECTION_OBJECT conId)
{
ChipDeviceEvent event;
uint8_t timerHandle = sInstance.GetTimerHandle(conId, false);
ChipLogProgress(DeviceLayer, "Tx Confirmation received");
// stop indication confirmation timer
if (timerHandle < kMaxConnections)
{
ChipLogProgress(DeviceLayer, " stop soft timer");
sl_bt_system_set_lazy_soft_timer(0, 0, timerHandle, false);
}
event.Type = DeviceEventType::kCHIPoBLEIndicateConfirm;
event.CHIPoBLEIndicateConfirm.ConId = conId;
PlatformMgr().PostEventOrDie(&event);
}
void BLEManagerImpl::HandleSoftTimerEvent(volatile sl_bt_msg_t * evt)
{
// BLE Manager starts soft timers with timer handles less than kMaxConnections
// If we receive a callback for unknown timer handle ignore this.
if (evt->data.evt_system_soft_timer.handle < kMaxConnections)
{
ChipLogProgress(DeviceLayer, "BLEManagerImpl::HandleSoftTimerEvent CHIPOBLE_PROTOCOL_ABORT");
ChipDeviceEvent event;
event.Type = DeviceEventType::kCHIPoBLEConnectionError;
event.CHIPoBLEConnectionError.ConId = mIndConfId[evt->data.evt_system_soft_timer.handle];
sInstance.mIndConfId[evt->data.evt_system_soft_timer.handle] = kUnusedIndex;
event.CHIPoBLEConnectionError.Reason = BLE_ERROR_CHIPOBLE_PROTOCOL_ABORT;
PlatformMgr().PostEventOrDie(&event);
}
}
bool BLEManagerImpl::RemoveConnection(uint8_t connectionHandle)
{
CHIPoBLEConState * bleConnState = GetConnectionState(connectionHandle, true);
bool status = false;
if (bleConnState != NULL)
{
memset(bleConnState, 0, sizeof(CHIPoBLEConState));
status = true;
}
return status;
}
void BLEManagerImpl::AddConnection(uint8_t connectionHandle, uint8_t bondingHandle)
{
CHIPoBLEConState * bleConnState = GetConnectionState(connectionHandle, true);
if (bleConnState != NULL)
{
memset(bleConnState, 0, sizeof(CHIPoBLEConState));
bleConnState->allocated = 1;
bleConnState->connectionHandle = connectionHandle;
bleConnState->bondingHandle = bondingHandle;
}
}
BLEManagerImpl::CHIPoBLEConState * BLEManagerImpl::GetConnectionState(uint8_t connectionHandle, bool allocate)
{
uint8_t freeIndex = kMaxConnections;
for (uint8_t i = 0; i < kMaxConnections; i++)
{
if (mBleConnections[i].allocated == 1)
{
if (mBleConnections[i].connectionHandle == connectionHandle)
{
return &mBleConnections[i];
}
}
else if (i < freeIndex)
{
freeIndex = i;
}
}
if (allocate)
{
if (freeIndex < kMaxConnections)
{
return &mBleConnections[freeIndex];
}
ChipLogError(DeviceLayer, "Failed to allocate CHIPoBLEConState");
}
return NULL;
}
#if CHIP_ENABLE_ADDITIONAL_DATA_ADVERTISING
CHIP_ERROR BLEManagerImpl::EncodeAdditionalDataTlv()
{
CHIP_ERROR err = CHIP_NO_ERROR;
BitFlags<AdditionalDataFields> additionalDataFields;
AdditionalDataPayloadGeneratorParams additionalDataPayloadParams;
#if CHIP_ENABLE_ROTATING_DEVICE_ID && defined(CHIP_DEVICE_CONFIG_ROTATING_DEVICE_ID_UNIQUE_ID)
uint8_t rotatingDeviceIdUniqueId[ConfigurationManager::kRotatingDeviceIDUniqueIDLength] = {};
MutableByteSpan rotatingDeviceIdUniqueIdSpan(rotatingDeviceIdUniqueId);
err = DeviceLayer::GetDeviceInstanceInfoProvider()->GetRotatingDeviceIdUniqueId(rotatingDeviceIdUniqueIdSpan);
SuccessOrExit(err);
err = ConfigurationMgr().GetLifetimeCounter(additionalDataPayloadParams.rotatingDeviceIdLifetimeCounter);
SuccessOrExit(err);
additionalDataPayloadParams.rotatingDeviceIdUniqueId = rotatingDeviceIdUniqueIdSpan;
additionalDataFields.Set(AdditionalDataFields::RotatingDeviceId);
#endif /* CHIP_ENABLE_ROTATING_DEVICE_ID && defined(CHIP_DEVICE_CONFIG_ROTATING_DEVICE_ID_UNIQUE_ID) */
err = AdditionalDataPayloadGenerator().generateAdditionalDataPayload(additionalDataPayloadParams, c3AdditionalDataBufferHandle,
additionalDataFields);
exit:
if (err != CHIP_NO_ERROR)
{
ChipLogError(DeviceLayer, "Failed to generate TLV encoded Additional Data (%s)", __func__);
}
return err;
}
void BLEManagerImpl::HandleC3ReadRequest(volatile sl_bt_msg_t * evt)
{
sl_bt_evt_gatt_server_user_read_request_t * readReq =
(sl_bt_evt_gatt_server_user_read_request_t *) &(evt->data.evt_gatt_server_user_read_request);
ChipLogDetail(DeviceLayer, "Read request received for CHIPoBLEChar_C3 - opcode:%d", readReq->att_opcode);
sl_status_t ret = sl_bt_gatt_server_send_user_read_response(readReq->connection, readReq->characteristic, 0,
sInstance.c3AdditionalDataBufferHandle->DataLength(),
sInstance.c3AdditionalDataBufferHandle->Start(), nullptr);
if (ret != SL_STATUS_OK)
{
ChipLogDetail(DeviceLayer, "Failed to send read response, err:%ld", ret);
}
}
#endif // CHIP_ENABLE_ADDITIONAL_DATA_ADVERTISING
uint8_t BLEManagerImpl::GetTimerHandle(uint8_t connectionHandle, bool allocate)
{
uint8_t freeIndex = kMaxConnections;
for (uint8_t i = 0; i < kMaxConnections; i++)
{
if (mIndConfId[i] == connectionHandle)
{
return i;
}
else if (allocate)
{
if (i < freeIndex)
{
freeIndex = i;
}
}
}
if (freeIndex < kMaxConnections)
{
mIndConfId[freeIndex] = connectionHandle;
}