Maintain legacy RTOS behavior before mbed-5
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Diff: rtos/Queue.h
- Revision:
- 6:350b53afb889
- Child:
- 8:88a1a9c26ae3
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/rtos/Queue.h Fri Nov 23 09:57:31 2012 +0000 @@ -0,0 +1,61 @@ +/* Copyright (c) 2012 mbed.org */ +#ifndef QUEUE_H +#define QUEUE_H + +#include <stdint.h> +#include <string.h> + +#include "cmsis_os.h" +#include "error.h" + +namespace rtos { + +/*! The Queue class allow to control, send, receive, or wait for messages. + A message can be a integer or pointer value to a certain type T that is send + to a thread or interrupt service routine. + \tparam T data type of a single message element. + \tparam queue_sz maximum number of messages in queue. +*/ +template<typename T, uint32_t queue_sz> +class Queue { +public: + /*! Create and initialise a message Queue. */ + Queue() { + #ifdef CMSIS_OS_RTX + memset(_queue_q, 0, sizeof(_queue_q)); + _queue_def.pool = _queue_q; + _queue_def.queue_sz = queue_sz; + #endif + _queue_id = osMessageCreate(&_queue_def, NULL); + if (_queue_id == NULL) { + error("Error initialising the queue object\n"); + } + } + + /*! Put a message in a Queue. + \param data message pointer. + \param millisec timeout value or 0 in case of no time-out. (default: 0) + \return status code that indicates the execution status of the function. + */ + osStatus put(T* data, uint32_t millisec=0) { + return osMessagePut(_queue_id, (uint32_t)data, millisec); + } + + /*! Get a message or Wait for a message from a Queue. + \param millisec timeout value or 0 in case of no time-out. (default: osWaitForever). + \return event information that includes the message and the status code. + */ + osEvent get(uint32_t millisec=osWaitForever) { + return osMessageGet(_queue_id, millisec); + } + +private: + osMessageQId _queue_id; + osMessageQDef_t _queue_def; +#ifdef CMSIS_OS_RTX + uint32_t _queue_q[4+(queue_sz)]; +#endif +}; + +} +#endif