rtos2-utils/include/sta/rtos/signal.hpp

/**
 * @file
 * @brief RTOS signal implementation.
 */
#ifndef STA_RTOS_SIGNAL_HPP
#define STA_RTOS_SIGNAL_HPP

#include <sta/signal.hpp>

#include <cmsis_os2.h>

namespace sta
{
	/**
	 * @brief Implementation of Signal interface using CMSIS RTOS2.
	 *
	 * @ingroup STA_RTOS_SYNC
	 * 
	 */
	class RtosSignal : public Signal
	{
	public:
		/**
		 * @param semaphore     CMSIS RTOS2 semaphore
		 */
		RtosSignal(osSemaphoreId_t semaphore);

		RtosSignal(uint32_t max, uint32_t initial = 0);

		/**
		 * @brief Notify the signal.
		 */
		void notify() override;

		/**
		 * @brief Check if the signal is set.
		 *
		 * @return true if the signal is set.
		 */
		bool peek() override;

		/**
		 * @brief Check if the signal is set and clear it.
		 *
		 * @return true if the signal was set.
		 */
		bool test() override;

		/**
		 * @brief Wait for the signal to be set.
		 */
		void wait() override;

	private:
		osSemaphoreId_t semaphore_;   /**< CMSIS RTOS2 semaphore */
	};
} // namespace sta


#endif // STA_RTOS_SIGNAL_HPP