Pierre Provent / USBHost

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Dependents:   TEST_USB_Nucleo_F429ZI Essais_USB_Nucleo_F429ZI SID_V3_Nucleo_F429ZI SID_V4_Nucleo_F429ZI_copy

mbed-rtos/rtos/Mutex.cpp@0:77ca32e8e04e, 2020-09-25 (annotated)

Committer:
pierreprovent
Date:
Fri Sep 25 10:17:49 2020 +0000
Revision:
0:77ca32e8e04e
Programme acquisition en enregistrement sur clef USB carte Nucleo F429ZI cours ELE118 Cnam

Who changed what in which revision?

UserRevisionLine numberNew contents of line
pierreprovent 0:77ca32e8e04e 1 /* mbed Microcontroller Library
pierreprovent 0:77ca32e8e04e 2 * Copyright (c) 2006-2012 ARM Limited
pierreprovent 0:77ca32e8e04e 3 *
pierreprovent 0:77ca32e8e04e 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
pierreprovent 0:77ca32e8e04e 5 * of this software and associated documentation files (the "Software"), to deal
pierreprovent 0:77ca32e8e04e 6 * in the Software without restriction, including without limitation the rights
pierreprovent 0:77ca32e8e04e 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
pierreprovent 0:77ca32e8e04e 8 * copies of the Software, and to permit persons to whom the Software is
pierreprovent 0:77ca32e8e04e 9 * furnished to do so, subject to the following conditions:
pierreprovent 0:77ca32e8e04e 10 *
pierreprovent 0:77ca32e8e04e 11 * The above copyright notice and this permission notice shall be included in
pierreprovent 0:77ca32e8e04e 12 * all copies or substantial portions of the Software.
pierreprovent 0:77ca32e8e04e 13 *
pierreprovent 0:77ca32e8e04e 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
pierreprovent 0:77ca32e8e04e 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
pierreprovent 0:77ca32e8e04e 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
pierreprovent 0:77ca32e8e04e 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
pierreprovent 0:77ca32e8e04e 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
pierreprovent 0:77ca32e8e04e 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
pierreprovent 0:77ca32e8e04e 20 * SOFTWARE.
pierreprovent 0:77ca32e8e04e 21 */
pierreprovent 0:77ca32e8e04e 22 #include "rtos/Mutex.h"
pierreprovent 0:77ca32e8e04e 23
pierreprovent 0:77ca32e8e04e 24 #include <string.h>
pierreprovent 0:77ca32e8e04e 25 #include "platform/mbed_error.h"
pierreprovent 0:77ca32e8e04e 26
pierreprovent 0:77ca32e8e04e 27 namespace rtos {
pierreprovent 0:77ca32e8e04e 28
pierreprovent 0:77ca32e8e04e 29 Mutex::Mutex() {
pierreprovent 0:77ca32e8e04e 30 #ifdef CMSIS_OS_RTX
pierreprovent 0:77ca32e8e04e 31 memset(_mutex_data, 0, sizeof(_mutex_data));
pierreprovent 0:77ca32e8e04e 32 _osMutexDef.mutex = _mutex_data;
pierreprovent 0:77ca32e8e04e 33 #endif
pierreprovent 0:77ca32e8e04e 34 _osMutexId = osMutexCreate(&_osMutexDef);
pierreprovent 0:77ca32e8e04e 35 if (_osMutexId == NULL) {
pierreprovent 0:77ca32e8e04e 36 error("Error initializing the mutex object\n");
pierreprovent 0:77ca32e8e04e 37 }
pierreprovent 0:77ca32e8e04e 38 }
pierreprovent 0:77ca32e8e04e 39
pierreprovent 0:77ca32e8e04e 40 osStatus Mutex::lock(uint32_t millisec) {
pierreprovent 0:77ca32e8e04e 41 return osMutexWait(_osMutexId, millisec);
pierreprovent 0:77ca32e8e04e 42 }
pierreprovent 0:77ca32e8e04e 43
pierreprovent 0:77ca32e8e04e 44 bool Mutex::trylock() {
pierreprovent 0:77ca32e8e04e 45 return (osMutexWait(_osMutexId, 0) == osOK);
pierreprovent 0:77ca32e8e04e 46 }
pierreprovent 0:77ca32e8e04e 47
pierreprovent 0:77ca32e8e04e 48 osStatus Mutex::unlock() {
pierreprovent 0:77ca32e8e04e 49 return osMutexRelease(_osMutexId);
pierreprovent 0:77ca32e8e04e 50 }
pierreprovent 0:77ca32e8e04e 51
pierreprovent 0:77ca32e8e04e 52 Mutex::~Mutex() {
pierreprovent 0:77ca32e8e04e 53 osMutexDelete(_osMutexId);
pierreprovent 0:77ca32e8e04e 54 }
pierreprovent 0:77ca32e8e04e 55
pierreprovent 0:77ca32e8e04e 56 }