/**
 * @file
 * @brief RTOS MemPool implementation for one variable.
 */
#ifndef STA_RTOS_SHAREDMEM_HPP
#define STA_RTOS_SHAREDMEM_HPP

#include <cmsis_os2.h>

#include <cstdint>

/**
 * @defgroup STA_RTOS_SHAREDMEM SharedMem
 * @ingroup STA_RTOS_API
 * @brief RTOS Shared Memory.
 */


namespace sta
{
	/**
	 * @brief Interface object for using CMSIS RTOS2 MemPool for one variable.
	 *
	 * @tparam Message type
     * 
	 * @ingroup STA_RTOS_SHAREDMEM
	 */
	template <typename T>
	class RtosSharedMem
	{
	public:
		using Message = T;  /**< message type */

	public:
		// Default Constructor
		RtosSharedMem();

		/**
         * @brief Create a memory pool. And allocates exavlty one block.
         * 
         * @param timeout names the timeout in milliseconds.
		 */
		RtosSharedMem(uint32_t timeout);

        /**
         * @brief Destroy the Rtos Mem Pool object and frees the memory.
         * 
         */
        ~RtosSharedMem();

        /**
         * @brief Allocate a new Memory Block.
         * 
         * @param _message names the message to write.
        */
        void write(T _message);

        /**
         * @brief Gets the value of the shared memory.
         * 
         * @return T Value of the shared memory.
        */
        T read();

	private:
		osMemoryPoolId_t handle_;   /**< CMSIS RTOS2 queue handle */
        T * shared_mem_;            /**< Pointer to the shared memory */
	};
} // namespace sta


#include <sta/rtos/sharedmem.tpp>


#endif // STA_RTOS_SHAREDMEM_HPP