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Dependencies:   mbed

mbed-rtos/rtos/Mail.h@0:0d257bbf5c05, 2021-03-11 (annotated)

Committer:
qmaker
Date:
Thu Mar 11 08:00:49 2021 +0000
Revision:
0:0d257bbf5c05
mpu6050 corrige

Who changed what in which revision?

UserRevisionLine numberNew contents of line
qmaker 0:0d257bbf5c05 1 /* mbed Microcontroller Library
qmaker 0:0d257bbf5c05 2 * Copyright (c) 2006-2012 ARM Limited
qmaker 0:0d257bbf5c05 3 *
qmaker 0:0d257bbf5c05 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
qmaker 0:0d257bbf5c05 5 * of this software and associated documentation files (the "Software"), to deal
qmaker 0:0d257bbf5c05 6 * in the Software without restriction, including without limitation the rights
qmaker 0:0d257bbf5c05 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
qmaker 0:0d257bbf5c05 8 * copies of the Software, and to permit persons to whom the Software is
qmaker 0:0d257bbf5c05 9 * furnished to do so, subject to the following conditions:
qmaker 0:0d257bbf5c05 10 *
qmaker 0:0d257bbf5c05 11 * The above copyright notice and this permission notice shall be included in
qmaker 0:0d257bbf5c05 12 * all copies or substantial portions of the Software.
qmaker 0:0d257bbf5c05 13 *
qmaker 0:0d257bbf5c05 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
qmaker 0:0d257bbf5c05 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
qmaker 0:0d257bbf5c05 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
qmaker 0:0d257bbf5c05 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
qmaker 0:0d257bbf5c05 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
qmaker 0:0d257bbf5c05 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
qmaker 0:0d257bbf5c05 20 * SOFTWARE.
qmaker 0:0d257bbf5c05 21 */
qmaker 0:0d257bbf5c05 22 #ifndef MAIL_H
qmaker 0:0d257bbf5c05 23 #define MAIL_H
qmaker 0:0d257bbf5c05 24
qmaker 0:0d257bbf5c05 25 #include <stdint.h>
qmaker 0:0d257bbf5c05 26 #include <string.h>
qmaker 0:0d257bbf5c05 27
qmaker 0:0d257bbf5c05 28 #include "cmsis_os.h"
qmaker 0:0d257bbf5c05 29
qmaker 0:0d257bbf5c05 30 namespace rtos {
qmaker 0:0d257bbf5c05 31 /** \addtogroup rtos */
qmaker 0:0d257bbf5c05 32 /** @{*/
qmaker 0:0d257bbf5c05 33
qmaker 0:0d257bbf5c05 34 /** The Mail class allow to control, send, receive, or wait for mail.
qmaker 0:0d257bbf5c05 35 A mail is a memory block that is send to a thread or interrupt service routine.
qmaker 0:0d257bbf5c05 36 @tparam T data type of a single message element.
qmaker 0:0d257bbf5c05 37 @tparam queue_sz maximum number of messages in queue.
qmaker 0:0d257bbf5c05 38 */
qmaker 0:0d257bbf5c05 39 template<typename T, uint32_t queue_sz>
qmaker 0:0d257bbf5c05 40 class Mail {
qmaker 0:0d257bbf5c05 41 public:
qmaker 0:0d257bbf5c05 42 /** Create and Initialise Mail queue. */
qmaker 0:0d257bbf5c05 43 Mail() {
qmaker 0:0d257bbf5c05 44 #ifdef CMSIS_OS_RTX
qmaker 0:0d257bbf5c05 45 memset(_mail_q, 0, sizeof(_mail_q));
qmaker 0:0d257bbf5c05 46 _mail_p[0] = _mail_q;
qmaker 0:0d257bbf5c05 47
qmaker 0:0d257bbf5c05 48 memset(_mail_m, 0, sizeof(_mail_m));
qmaker 0:0d257bbf5c05 49 _mail_p[1] = _mail_m;
qmaker 0:0d257bbf5c05 50
qmaker 0:0d257bbf5c05 51 _mail_def.pool = _mail_p;
qmaker 0:0d257bbf5c05 52 _mail_def.queue_sz = queue_sz;
qmaker 0:0d257bbf5c05 53 _mail_def.item_sz = sizeof(T);
qmaker 0:0d257bbf5c05 54 #endif
qmaker 0:0d257bbf5c05 55 _mail_id = osMailCreate(&_mail_def, NULL);
qmaker 0:0d257bbf5c05 56 }
qmaker 0:0d257bbf5c05 57
qmaker 0:0d257bbf5c05 58 /** Allocate a memory block of type T
qmaker 0:0d257bbf5c05 59 @param millisec timeout value or 0 in case of no time-out. (default: 0).
qmaker 0:0d257bbf5c05 60 @return pointer to memory block that can be filled with mail or NULL in case error.
qmaker 0:0d257bbf5c05 61 */
qmaker 0:0d257bbf5c05 62 T* alloc(uint32_t millisec=0) {
qmaker 0:0d257bbf5c05 63 return (T*)osMailAlloc(_mail_id, millisec);
qmaker 0:0d257bbf5c05 64 }
qmaker 0:0d257bbf5c05 65
qmaker 0:0d257bbf5c05 66 /** Allocate a memory block of type T and set memory block to zero.
qmaker 0:0d257bbf5c05 67 @param millisec timeout value or 0 in case of no time-out. (default: 0).
qmaker 0:0d257bbf5c05 68 @return pointer to memory block that can be filled with mail or NULL in case error.
qmaker 0:0d257bbf5c05 69 */
qmaker 0:0d257bbf5c05 70 T* calloc(uint32_t millisec=0) {
qmaker 0:0d257bbf5c05 71 return (T*)osMailCAlloc(_mail_id, millisec);
qmaker 0:0d257bbf5c05 72 }
qmaker 0:0d257bbf5c05 73
qmaker 0:0d257bbf5c05 74 /** Put a mail in the queue.
qmaker 0:0d257bbf5c05 75 @param mptr memory block previously allocated with Mail::alloc or Mail::calloc.
qmaker 0:0d257bbf5c05 76 @return status code that indicates the execution status of the function.
qmaker 0:0d257bbf5c05 77 */
qmaker 0:0d257bbf5c05 78 osStatus put(T *mptr) {
qmaker 0:0d257bbf5c05 79 return osMailPut(_mail_id, (void*)mptr);
qmaker 0:0d257bbf5c05 80 }
qmaker 0:0d257bbf5c05 81
qmaker 0:0d257bbf5c05 82 /** Get a mail from a queue.
qmaker 0:0d257bbf5c05 83 @param millisec timeout value or 0 in case of no time-out. (default: osWaitForever).
qmaker 0:0d257bbf5c05 84 @return event that contains mail information or error code.
qmaker 0:0d257bbf5c05 85 */
qmaker 0:0d257bbf5c05 86 osEvent get(uint32_t millisec=osWaitForever) {
qmaker 0:0d257bbf5c05 87 return osMailGet(_mail_id, millisec);
qmaker 0:0d257bbf5c05 88 }
qmaker 0:0d257bbf5c05 89
qmaker 0:0d257bbf5c05 90 /** Free a memory block from a mail.
qmaker 0:0d257bbf5c05 91 @param mptr pointer to the memory block that was obtained with Mail::get.
qmaker 0:0d257bbf5c05 92 @return status code that indicates the execution status of the function.
qmaker 0:0d257bbf5c05 93 */
qmaker 0:0d257bbf5c05 94 osStatus free(T *mptr) {
qmaker 0:0d257bbf5c05 95 return osMailFree(_mail_id, (void*)mptr);
qmaker 0:0d257bbf5c05 96 }
qmaker 0:0d257bbf5c05 97
qmaker 0:0d257bbf5c05 98 private:
qmaker 0:0d257bbf5c05 99 osMailQId _mail_id;
qmaker 0:0d257bbf5c05 100 osMailQDef_t _mail_def;
qmaker 0:0d257bbf5c05 101 #ifdef CMSIS_OS_RTX
qmaker 0:0d257bbf5c05 102 uint32_t _mail_q[4+(queue_sz)];
qmaker 0:0d257bbf5c05 103 uint32_t _mail_m[3+((sizeof(T)+3)/4)*(queue_sz)];
qmaker 0:0d257bbf5c05 104 void *_mail_p[2];
qmaker 0:0d257bbf5c05 105 #endif
qmaker 0:0d257bbf5c05 106 };
qmaker 0:0d257bbf5c05 107
qmaker 0:0d257bbf5c05 108 }
qmaker 0:0d257bbf5c05 109
qmaker 0:0d257bbf5c05 110 #endif
qmaker 0:0d257bbf5c05 111
qmaker 0:0d257bbf5c05 112
qmaker 0:0d257bbf5c05 113 /** @}*/