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[ESP32] Replaced FreeRTOS timer with CHIP timers in nimble BLEManager…
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…Impl. (project-chip#34050)

* Replace free RTOS timer with ChipTimer

* Replaced FreeRTOS timer with CHIP timer
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pimpalemahesh authored and shubhamdp committed Jun 28, 2024
1 parent f4363a0 commit 850302d
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Showing 2 changed files with 10 additions and 33 deletions.
2 changes: 1 addition & 1 deletion src/platform/ESP32/BLEManagerImpl.h
Original file line number Diff line number Diff line change
Expand Up @@ -302,7 +302,7 @@ class BLEManagerImpl final : public BLEManager,
CHIP_ERROR StartAdvertising(void);
void StartBleAdvTimeoutTimer(uint32_t aTimeoutInMs);
void CancelBleAdvTimeoutTimer(void);
static void BleAdvTimeoutHandler(TimerHandle_t xTimer);
static void BleAdvTimeoutHandler(System::Layer *, void *);

#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);
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41 changes: 9 additions & 32 deletions src/platform/ESP32/nimble/BLEManagerImpl.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -76,8 +76,7 @@ namespace Internal {

namespace {

TimerHandle_t sbleAdvTimeoutTimer; // FreeRTOS sw timer.
#if CONFIG_ENABLE_ESP32_BLE_CONTROLLER
#ifdef CONFIG_ENABLE_ESP32_BLE_CONTROLLER
static constexpr uint16_t kNewConnectionScanTimeout = 60;
static constexpr uint16_t kConnectTimeout = 20;
#endif
Expand Down Expand Up @@ -212,16 +211,6 @@ CHIP_ERROR BLEManagerImpl::_Init()
{
CHIP_ERROR err;

// Create FreeRTOS sw timer for BLE timeouts and interval change.
sbleAdvTimeoutTimer = xTimerCreate("BleAdvTimer", // Just a text name, not used by the RTOS kernel
1, // == default timer period
false, // no timer reload (==one-shot)
(void *) this, // init timer id = ble obj context
BleAdvTimeoutHandler // timer callback handler
);

VerifyOrReturnError(sbleAdvTimeoutTimer != nullptr, CHIP_ERROR_NO_MEMORY);

// Initialize the Chip BleLayer.
#if CONFIG_ENABLE_ESP32_BLE_CONTROLLER
err = BleLayer::Init(this, this, this, &DeviceLayer::SystemLayer());
Expand Down Expand Up @@ -257,9 +246,7 @@ CHIP_ERROR BLEManagerImpl::_Init()

void BLEManagerImpl::_Shutdown()
{
VerifyOrReturn(sbleAdvTimeoutTimer != nullptr);
xTimerDelete(sbleAdvTimeoutTimer, portMAX_DELAY);
sbleAdvTimeoutTimer = nullptr;
CancelBleAdvTimeoutTimer();

BleLayer::Shutdown();

Expand Down Expand Up @@ -294,7 +281,7 @@ CHIP_ERROR BLEManagerImpl::_SetAdvertisingEnabled(bool val)
return err;
}

void BLEManagerImpl::BleAdvTimeoutHandler(TimerHandle_t xTimer)
void BLEManagerImpl::BleAdvTimeoutHandler(System::Layer *, void *)
{
if (BLEMgrImpl().mFlags.Has(Flags::kFastAdvertisingEnabled))
{
Expand All @@ -306,7 +293,6 @@ void BLEManagerImpl::BleAdvTimeoutHandler(TimerHandle_t xTimer)
BLEMgrImpl().mFlags.Clear(Flags::kExtAdvertisingEnabled);
BLEMgrImpl().StartBleAdvTimeoutTimer(CHIP_DEVICE_CONFIG_BLE_EXT_ADVERTISING_INTERVAL_CHANGE_TIME_MS);
#endif
PlatformMgr().ScheduleWork(DriveBLEState, 0);
}
#if CHIP_DEVICE_CONFIG_BLE_EXT_ADVERTISING
else
Expand All @@ -316,9 +302,9 @@ void BLEManagerImpl::BleAdvTimeoutHandler(TimerHandle_t xTimer)
BLEMgrImpl().mFlags.Set(Flags::kExtAdvertisingEnabled);
BLEMgr().SetAdvertisingMode(BLEAdvertisingMode::kSlowAdvertising);
BLEMgrImpl().mFlags.Set(Flags::kAdvertisingRefreshNeeded, 1);
PlatformMgr().ScheduleWork(DriveBLEState, 0);
}
#endif
PlatformMgr().ScheduleWork(DriveBLEState, 0);
}

CHIP_ERROR BLEManagerImpl::_SetAdvertisingMode(BLEAdvertisingMode mode)
Expand Down Expand Up @@ -729,26 +715,17 @@ CHIP_ERROR BLEManagerImpl::MapBLEError(int bleErr)
}
void BLEManagerImpl::CancelBleAdvTimeoutTimer(void)
{
VerifyOrReturn(sbleAdvTimeoutTimer != nullptr);

if (xTimerStop(sbleAdvTimeoutTimer, pdMS_TO_TICKS(0)) == pdFAIL)
if (SystemLayer().IsTimerActive(BleAdvTimeoutHandler, nullptr))
{
ChipLogError(DeviceLayer, "Failed to stop BledAdv timeout timer");
SystemLayer().CancelTimer(BleAdvTimeoutHandler, nullptr);
}
}
void BLEManagerImpl::StartBleAdvTimeoutTimer(uint32_t aTimeoutInMs)
{
VerifyOrReturn(sbleAdvTimeoutTimer != nullptr);

if (xTimerIsTimerActive(sbleAdvTimeoutTimer))
{
CancelBleAdvTimeoutTimer();
}
CancelBleAdvTimeoutTimer();

// timer is not active, change its period to required value (== restart).
// FreeRTOS- Block for a maximum of 100 ticks if the change period command
// cannot immediately be sent to the timer command queue.
if (xTimerChangePeriod(sbleAdvTimeoutTimer, pdMS_TO_TICKS(aTimeoutInMs), pdMS_TO_TICKS(100)) != pdPASS)
CHIP_ERROR err = SystemLayer().StartTimer(System::Clock::Milliseconds32(aTimeoutInMs), BleAdvTimeoutHandler, nullptr);
if ((err != CHIP_NO_ERROR))
{
ChipLogError(DeviceLayer, "Failed to start BledAdv timeout timer");
}
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