blob: f1a400fc884efd31184294e56432e97c7c513e90 [file] [log] [blame]
/*
*
* Copyright (c) 2020 Project CHIP Authors
* Copyright (c) 2018 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 generic implementation of PlatformManager features
* for use on FreeRTOS platforms.
*/
#pragma once
#include <platform/CHIPDeviceConfig.h>
#include <platform/internal/GenericPlatformManagerImpl.h>
#if defined(ESP_PLATFORM)
#include "freertos/FreeRTOS.h"
#include "freertos/queue.h"
#include "freertos/semphr.h"
#include "freertos/task.h"
#else
#include "FreeRTOS.h"
#include "queue.h"
#include "semphr.h"
#include "task.h"
#endif
#include <atomic>
namespace chip {
namespace DeviceLayer {
namespace Internal {
/**
* Provides a generic implementation of PlatformManager features that works on FreeRTOS platforms.
*
* This template contains implementations of select features from the PlatformManager abstract
* interface that are suitable for use on FreeRTOS-based platforms. It is intended to be inherited
* (directly or indirectly) by the PlatformManagerImpl class, which also appears as the template's
* ImplClass parameter.
*/
template <class ImplClass>
class GenericPlatformManagerImpl_FreeRTOS : public GenericPlatformManagerImpl<ImplClass>
{
protected:
TimeOut_t mNextTimerBaseTime;
TickType_t mNextTimerDurationTicks;
SemaphoreHandle_t mChipStackLock = NULL;
QueueHandle_t mChipEventQueue = NULL;
TaskHandle_t mEventLoopTask = NULL;
bool mChipTimerActive;
// ===== Methods that implement the PlatformManager abstract interface.
CHIP_ERROR _InitChipStack();
void _LockChipStack(void);
bool _TryLockChipStack(void);
void _UnlockChipStack(void);
CHIP_ERROR _PostEvent(const ChipDeviceEvent * event);
void _RunEventLoop(void);
CHIP_ERROR _StartEventLoopTask(void);
CHIP_ERROR _StopEventLoopTask();
CHIP_ERROR _StartChipTimer(System::Clock::Timeout duration);
void _Shutdown(void);
#if CHIP_STACK_LOCK_TRACKING_ENABLED
bool _IsChipStackLockedByCurrentThread() const;
#endif // CHIP_STACK_LOCK_TRACKING_ENABLED
// ===== Methods available to the implementation subclass.
void PostEventFromISR(const ChipDeviceEvent * event, BaseType_t & yieldRequired);
private:
// ===== Private members for use by this class only.
inline ImplClass * Impl() { return static_cast<ImplClass *>(this); }
static void EventLoopTaskMain(void * arg);
#if defined(CHIP_CONFIG_FREERTOS_USE_STATIC_QUEUE) && CHIP_CONFIG_FREERTOS_USE_STATIC_QUEUE
uint8_t mEventQueueBuffer[CHIP_DEVICE_CONFIG_MAX_EVENT_QUEUE_SIZE * sizeof(ChipDeviceEvent)];
StaticQueue_t mEventQueueStruct;
#endif
std::atomic<bool> mShouldRunEventLoop;
#if defined(CHIP_CONFIG_FREERTOS_USE_STATIC_TASK) && CHIP_CONFIG_FREERTOS_USE_STATIC_TASK
StackType_t mEventLoopStack[CHIP_DEVICE_CONFIG_CHIP_TASK_STACK_SIZE / sizeof(StackType_t)];
StaticTask_t mventLoopTaskStruct;
#endif
#if defined(CHIP_CONFIG_FREERTOS_USE_STATIC_SEMAPHORE) && CHIP_CONFIG_FREERTOS_USE_STATIC_SEMAPHORE
StaticSemaphore_t mChipStackLockMutex;
#endif
};
// Instruct the compiler to instantiate the template only when explicitly told to do so.
extern template class GenericPlatformManagerImpl_FreeRTOS<PlatformManagerImpl>;
} // namespace Internal
} // namespace DeviceLayer
} // namespace chip