#ifndef FSFW_OSAL_FREERTOS_COUNTINGSEMAPHUSINGTASK_H_ #define FSFW_OSAL_FREERTOS_COUNTINGSEMAPHUSINGTASK_H_ #include "CountingSemaphUsingTask.h" #include "FreeRTOS.h" #include "fsfw/tasks/SemaphoreIF.h" #include "task.h" #if (tskKERNEL_VERSION_MAJOR == 8 && tskKERNEL_VERSION_MINOR > 2) || tskKERNEL_VERSION_MAJOR > 8 /** * @brief Couting Semaphore implementation which uses the notification value * of the task. The notification value should therefore not be used * for other purposes. * @details * Additional information: https://www.freertos.org/RTOS-task-notifications.html * and general semaphore documentation. * This semaphore is bound to the task it is created in! * Take care of calling this function with the correct executing task, * (for example in the initializeAfterTaskCreation() function). */ class CountingSemaphoreUsingTask : public SemaphoreIF { public: CountingSemaphoreUsingTask(const uint8_t maxCount, uint8_t initCount); virtual ~CountingSemaphoreUsingTask(); /** * Acquire the counting semaphore. * If no semaphores are available, the task will be blocked * for a maximum of #timeoutMs or until one is given back, * for example by an ISR or another task. * @param timeoutMs * @return -@c returnvalue::OK on success * -@c SemaphoreIF::SEMAPHORE_TIMEOUT on timeout */ ReturnValue_t acquire(TimeoutType timeoutType = TimeoutType::BLOCKING, uint32_t timeoutMs = portMAX_DELAY) override; /** * Release a semaphore, increasing the number of available counting * semaphores up to the #maxCount value. * @return -@c returnvalue::OK on success * -@c SemaphoreIF::SEMAPHORE_NOT_OWNED if #maxCount semaphores are * already available. */ ReturnValue_t release() override; uint8_t getSemaphoreCounter() const override; /** * Get the semaphore counter from an ISR. * @param task * @param higherPriorityTaskWoken This will be set to pdPASS if a task with * a higher priority was unblocked. A context switch should be requested * from an ISR if this is the case (see TaskManagement functions) * @return */ static uint8_t getSemaphoreCounterFromISR(TaskHandle_t task, BaseType_t* higherPriorityTaskWoken); /** * Acquire with a timeout value in ticks * @param timeoutTicks * @return -@c returnvalue::OK on success * -@c SemaphoreIF::SEMAPHORE_TIMEOUT on timeout */ ReturnValue_t acquireWithTickTimeout(TimeoutType timeoutType = TimeoutType::BLOCKING, TickType_t timeoutTicks = portMAX_DELAY); /** * Get handle to the task related to the semaphore. * @return */ TaskHandle_t getTaskHandle(); /** * Release semaphore of task by supplying task handle * @param taskToNotify * @return -@c returnvalue::OK on success * -@c SemaphoreIF::SEMAPHORE_NOT_OWNED if #maxCount semaphores are * already available. */ static ReturnValue_t release(TaskHandle_t taskToNotify); /** * Release seamphore of a task from an ISR. * @param taskToNotify * @param higherPriorityTaskWoken This will be set to pdPASS if a task with * a higher priority was unblocked. A context switch should be requested * from an ISR if this is the case (see TaskManagement functions) * @return -@c returnvalue::OK on success * -@c SemaphoreIF::SEMAPHORE_NOT_OWNED if #maxCount semaphores are * already available. */ static ReturnValue_t releaseFromISR(TaskHandle_t taskToNotify, BaseType_t* higherPriorityTaskWoken); uint8_t getMaxCount() const; private: TaskHandle_t handle; const uint8_t maxCount; }; #endif /* (tskKERNEL_VERSION_MAJOR == 8 && tskKERNEL_VERSION_MINOR > 2) || \ tskKERNEL_VERSION_MAJOR > 8 */ #endif /* FSFW_OSAL_FREERTOS_COUNTINGSEMAPHUSINGTASK_H_ */