Daniel Vizcaya / Mbed OS 04_RTOS_Embebidos

Entrega 3er corte - sistemas embebidos

mbed-os/rtos/Mail.h@0:6ad07c9019fd, 2018-05-30 (annotated)

Committer:
Bethory
Date:
Wed May 30 00:01:50 2018 +0000
Revision:
0:6ad07c9019fd
Codigo de tales para todos los pasculaes

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Bethory 0:6ad07c9019fd 1 /* mbed Microcontroller Library
Bethory 0:6ad07c9019fd 2 * Copyright (c) 2006-2017 ARM Limited
Bethory 0:6ad07c9019fd 3 *
Bethory 0:6ad07c9019fd 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
Bethory 0:6ad07c9019fd 5 * of this software and associated documentation files (the "Software"), to deal
Bethory 0:6ad07c9019fd 6 * in the Software without restriction, including without limitation the rights
Bethory 0:6ad07c9019fd 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
Bethory 0:6ad07c9019fd 8 * copies of the Software, and to permit persons to whom the Software is
Bethory 0:6ad07c9019fd 9 * furnished to do so, subject to the following conditions:
Bethory 0:6ad07c9019fd 10 *
Bethory 0:6ad07c9019fd 11 * The above copyright notice and this permission notice shall be included in
Bethory 0:6ad07c9019fd 12 * all copies or substantial portions of the Software.
Bethory 0:6ad07c9019fd 13 *
Bethory 0:6ad07c9019fd 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
Bethory 0:6ad07c9019fd 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
Bethory 0:6ad07c9019fd 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
Bethory 0:6ad07c9019fd 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
Bethory 0:6ad07c9019fd 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Bethory 0:6ad07c9019fd 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
Bethory 0:6ad07c9019fd 20 * SOFTWARE.
Bethory 0:6ad07c9019fd 21 */
Bethory 0:6ad07c9019fd 22 #ifndef MAIL_H
Bethory 0:6ad07c9019fd 23 #define MAIL_H
Bethory 0:6ad07c9019fd 24
Bethory 0:6ad07c9019fd 25 #include <stdint.h>
Bethory 0:6ad07c9019fd 26 #include <string.h>
Bethory 0:6ad07c9019fd 27
Bethory 0:6ad07c9019fd 28 #include "Queue.h"
Bethory 0:6ad07c9019fd 29 #include "MemoryPool.h"
Bethory 0:6ad07c9019fd 30 #include "cmsis_os2.h"
Bethory 0:6ad07c9019fd 31 #include "mbed_rtos_storage.h"
Bethory 0:6ad07c9019fd 32 #include "mbed_rtos1_types.h"
Bethory 0:6ad07c9019fd 33
Bethory 0:6ad07c9019fd 34 #include "platform/NonCopyable.h"
Bethory 0:6ad07c9019fd 35
Bethory 0:6ad07c9019fd 36 using namespace rtos;
Bethory 0:6ad07c9019fd 37
Bethory 0:6ad07c9019fd 38 namespace rtos {
Bethory 0:6ad07c9019fd 39 /** \addtogroup rtos */
Bethory 0:6ad07c9019fd 40 /** @{*/
Bethory 0:6ad07c9019fd 41 /**
Bethory 0:6ad07c9019fd 42 * \defgroup rtos_Mail Mail class
Bethory 0:6ad07c9019fd 43 * @{
Bethory 0:6ad07c9019fd 44 */
Bethory 0:6ad07c9019fd 45
Bethory 0:6ad07c9019fd 46 /** The Mail class allow to control, send, receive, or wait for mail.
Bethory 0:6ad07c9019fd 47 A mail is a memory block that is send to a thread or interrupt service routine.
Bethory 0:6ad07c9019fd 48 @tparam T data type of a single message element.
Bethory 0:6ad07c9019fd 49 @tparam queue_sz maximum number of messages in queue.
Bethory 0:6ad07c9019fd 50
Bethory 0:6ad07c9019fd 51 @note
Bethory 0:6ad07c9019fd 52 Memory considerations: The mail data store and control structures will be created on current thread's stack,
Bethory 0:6ad07c9019fd 53 both for the mbed OS and underlying RTOS objects (static or dynamic RTOS memory pools are not being used).
Bethory 0:6ad07c9019fd 54 */
Bethory 0:6ad07c9019fd 55 template<typename T, uint32_t queue_sz>
Bethory 0:6ad07c9019fd 56 class Mail : private mbed::NonCopyable<Mail<T, queue_sz> > {
Bethory 0:6ad07c9019fd 57 public:
Bethory 0:6ad07c9019fd 58 /** Create and Initialize Mail queue.
Bethory 0:6ad07c9019fd 59 *
Bethory 0:6ad07c9019fd 60 * @note You cannot call this function from ISR context.
Bethory 0:6ad07c9019fd 61 */
Bethory 0:6ad07c9019fd 62 Mail() { };
Bethory 0:6ad07c9019fd 63
Bethory 0:6ad07c9019fd 64 /** Check if the mail queue is empty
Bethory 0:6ad07c9019fd 65 *
Bethory 0:6ad07c9019fd 66 * @return True if the mail queue is empty, false if not
Bethory 0:6ad07c9019fd 67 *
Bethory 0:6ad07c9019fd 68 * @note You may call this function from ISR context.
Bethory 0:6ad07c9019fd 69 */
Bethory 0:6ad07c9019fd 70 bool empty() const {
Bethory 0:6ad07c9019fd 71 return _queue.empty();
Bethory 0:6ad07c9019fd 72 }
Bethory 0:6ad07c9019fd 73
Bethory 0:6ad07c9019fd 74 /** Check if the mail queue is full
Bethory 0:6ad07c9019fd 75 *
Bethory 0:6ad07c9019fd 76 * @return True if the mail queue is full, false if not
Bethory 0:6ad07c9019fd 77 *
Bethory 0:6ad07c9019fd 78 * @note You may call this function from ISR context.
Bethory 0:6ad07c9019fd 79 */
Bethory 0:6ad07c9019fd 80 bool full() const {
Bethory 0:6ad07c9019fd 81 return _queue.full();
Bethory 0:6ad07c9019fd 82 }
Bethory 0:6ad07c9019fd 83
Bethory 0:6ad07c9019fd 84 /** Allocate a memory block of type T
Bethory 0:6ad07c9019fd 85 @param millisec timeout value or 0 in case of no time-out. (default: 0).
Bethory 0:6ad07c9019fd 86 @return pointer to memory block that can be filled with mail or NULL in case error.
Bethory 0:6ad07c9019fd 87
Bethory 0:6ad07c9019fd 88 @note You may call this function from ISR context if the millisec parameter is set to 0.
Bethory 0:6ad07c9019fd 89 */
Bethory 0:6ad07c9019fd 90 T* alloc(uint32_t millisec=0) {
Bethory 0:6ad07c9019fd 91 return _pool.alloc();
Bethory 0:6ad07c9019fd 92 }
Bethory 0:6ad07c9019fd 93
Bethory 0:6ad07c9019fd 94 /** Allocate a memory block of type T and set memory block to zero.
Bethory 0:6ad07c9019fd 95 @param millisec timeout value or 0 in case of no time-out. (default: 0).
Bethory 0:6ad07c9019fd 96 @return pointer to memory block that can be filled with mail or NULL in case error.
Bethory 0:6ad07c9019fd 97
Bethory 0:6ad07c9019fd 98 @note You may call this function from ISR context if the millisec parameter is set to 0.
Bethory 0:6ad07c9019fd 99 */
Bethory 0:6ad07c9019fd 100 T* calloc(uint32_t millisec=0) {
Bethory 0:6ad07c9019fd 101 return _pool.calloc();
Bethory 0:6ad07c9019fd 102 }
Bethory 0:6ad07c9019fd 103
Bethory 0:6ad07c9019fd 104 /** Put a mail in the queue.
Bethory 0:6ad07c9019fd 105 @param mptr memory block previously allocated with Mail::alloc or Mail::calloc.
Bethory 0:6ad07c9019fd 106 @return status code that indicates the execution status of the function.
Bethory 0:6ad07c9019fd 107
Bethory 0:6ad07c9019fd 108 @note You may call this function from ISR context.
Bethory 0:6ad07c9019fd 109 */
Bethory 0:6ad07c9019fd 110 osStatus put(T *mptr) {
Bethory 0:6ad07c9019fd 111 return _queue.put(mptr);
Bethory 0:6ad07c9019fd 112 }
Bethory 0:6ad07c9019fd 113
Bethory 0:6ad07c9019fd 114 /** Get a mail from a queue.
Bethory 0:6ad07c9019fd 115 @param millisec timeout value or 0 in case of no time-out. (default: osWaitForever).
Bethory 0:6ad07c9019fd 116 @return event that contains mail information or error code.
Bethory 0:6ad07c9019fd 117
Bethory 0:6ad07c9019fd 118 @note You may call this function from ISR context if the millisec parameter is set to 0.
Bethory 0:6ad07c9019fd 119 */
Bethory 0:6ad07c9019fd 120 osEvent get(uint32_t millisec=osWaitForever) {
Bethory 0:6ad07c9019fd 121 osEvent evt = _queue.get(millisec);
Bethory 0:6ad07c9019fd 122 if (evt.status == osEventMessage) {
Bethory 0:6ad07c9019fd 123 evt.status = osEventMail;
Bethory 0:6ad07c9019fd 124 }
Bethory 0:6ad07c9019fd 125 return evt;
Bethory 0:6ad07c9019fd 126 }
Bethory 0:6ad07c9019fd 127
Bethory 0:6ad07c9019fd 128 /** Free a memory block from a mail.
Bethory 0:6ad07c9019fd 129 @param mptr pointer to the memory block that was obtained with Mail::get.
Bethory 0:6ad07c9019fd 130 @return status code that indicates the execution status of the function.
Bethory 0:6ad07c9019fd 131
Bethory 0:6ad07c9019fd 132 @note You may call this function from ISR context.
Bethory 0:6ad07c9019fd 133 */
Bethory 0:6ad07c9019fd 134 osStatus free(T *mptr) {
Bethory 0:6ad07c9019fd 135 return _pool.free(mptr);
Bethory 0:6ad07c9019fd 136 }
Bethory 0:6ad07c9019fd 137
Bethory 0:6ad07c9019fd 138 private:
Bethory 0:6ad07c9019fd 139 Queue<T, queue_sz> _queue;
Bethory 0:6ad07c9019fd 140 MemoryPool<T, queue_sz> _pool;
Bethory 0:6ad07c9019fd 141 };
Bethory 0:6ad07c9019fd 142
Bethory 0:6ad07c9019fd 143 /** @}*/
Bethory 0:6ad07c9019fd 144 /** @}*/
Bethory 0:6ad07c9019fd 145
Bethory 0:6ad07c9019fd 146 }
Bethory 0:6ad07c9019fd 147
Bethory 0:6ad07c9019fd 148 #endif
Bethory 0:6ad07c9019fd 149
Bethory 0:6ad07c9019fd 150
Bethory 0:6ad07c9019fd 151