FFT LED Display / 4180_EditThis_copy_Demo_Test

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Dependencies:   FFT

mbed-rtos/rtos/Mutex.cpp@0:d6c9b09b4042, 2020-12-02 (annotated)

Committer:
annieluo2
Date:
Wed Dec 02 18:02:03 2020 +0000
Revision:
0:d6c9b09b4042
boo

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annieluo2 0:d6c9b09b4042 1 /* mbed Microcontroller Library
annieluo2 0:d6c9b09b4042 2 * Copyright (c) 2006-2012 ARM Limited
annieluo2 0:d6c9b09b4042 3 *
annieluo2 0:d6c9b09b4042 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
annieluo2 0:d6c9b09b4042 5 * of this software and associated documentation files (the "Software"), to deal
annieluo2 0:d6c9b09b4042 6 * in the Software without restriction, including without limitation the rights
annieluo2 0:d6c9b09b4042 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
annieluo2 0:d6c9b09b4042 8 * copies of the Software, and to permit persons to whom the Software is
annieluo2 0:d6c9b09b4042 9 * furnished to do so, subject to the following conditions:
annieluo2 0:d6c9b09b4042 10 *
annieluo2 0:d6c9b09b4042 11 * The above copyright notice and this permission notice shall be included in
annieluo2 0:d6c9b09b4042 12 * all copies or substantial portions of the Software.
annieluo2 0:d6c9b09b4042 13 *
annieluo2 0:d6c9b09b4042 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
annieluo2 0:d6c9b09b4042 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
annieluo2 0:d6c9b09b4042 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
annieluo2 0:d6c9b09b4042 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
annieluo2 0:d6c9b09b4042 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
annieluo2 0:d6c9b09b4042 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
annieluo2 0:d6c9b09b4042 20 * SOFTWARE.
annieluo2 0:d6c9b09b4042 21 */
annieluo2 0:d6c9b09b4042 22 #include "rtos/Mutex.h"
annieluo2 0:d6c9b09b4042 23
annieluo2 0:d6c9b09b4042 24 #include <string.h>
annieluo2 0:d6c9b09b4042 25 #include "platform/mbed_error.h"
annieluo2 0:d6c9b09b4042 26
annieluo2 0:d6c9b09b4042 27 namespace rtos {
annieluo2 0:d6c9b09b4042 28
annieluo2 0:d6c9b09b4042 29 Mutex::Mutex() {
annieluo2 0:d6c9b09b4042 30 #ifdef CMSIS_OS_RTX
annieluo2 0:d6c9b09b4042 31 memset(_mutex_data, 0, sizeof(_mutex_data));
annieluo2 0:d6c9b09b4042 32 _osMutexDef.mutex = _mutex_data;
annieluo2 0:d6c9b09b4042 33 #endif
annieluo2 0:d6c9b09b4042 34 _osMutexId = osMutexCreate(&_osMutexDef);
annieluo2 0:d6c9b09b4042 35 if (_osMutexId == NULL) {
annieluo2 0:d6c9b09b4042 36 error("Error initializing the mutex object\n");
annieluo2 0:d6c9b09b4042 37 }
annieluo2 0:d6c9b09b4042 38 }
annieluo2 0:d6c9b09b4042 39
annieluo2 0:d6c9b09b4042 40 osStatus Mutex::lock(uint32_t millisec) {
annieluo2 0:d6c9b09b4042 41 return osMutexWait(_osMutexId, millisec);
annieluo2 0:d6c9b09b4042 42 }
annieluo2 0:d6c9b09b4042 43
annieluo2 0:d6c9b09b4042 44 bool Mutex::trylock() {
annieluo2 0:d6c9b09b4042 45 return (osMutexWait(_osMutexId, 0) == osOK);
annieluo2 0:d6c9b09b4042 46 }
annieluo2 0:d6c9b09b4042 47
annieluo2 0:d6c9b09b4042 48 osStatus Mutex::unlock() {
annieluo2 0:d6c9b09b4042 49 return osMutexRelease(_osMutexId);
annieluo2 0:d6c9b09b4042 50 }
annieluo2 0:d6c9b09b4042 51
annieluo2 0:d6c9b09b4042 52 Mutex::~Mutex() {
annieluo2 0:d6c9b09b4042 53 osMutexDelete(_osMutexId);
annieluo2 0:d6c9b09b4042 54 }
annieluo2 0:d6c9b09b4042 55
annieluo2 0:d6c9b09b4042 56 }