Music Visualizer / Mbed 2 deprecated 4180FinalProject

Music Visualizer

Dependencies:   mbed SDFileSystem NeoStrip PinDetect

mbed-rtos/rtos/Mutex.cpp@9:0e16d1e33c4b, 2020-04-30 (annotated)

Committer:
spatel465
Date:
Thu Apr 30 04:00:33 2020 +0000
Revision:
9:0e16d1e33c4b
Parent:
0:adce77867281 
cleaned up comments

Who changed what in which revision?

UserRevisionLine numberNew contents of line
spatel465 0:adce77867281 1 /* mbed Microcontroller Library
spatel465 0:adce77867281 2 * Copyright (c) 2006-2012 ARM Limited
spatel465 0:adce77867281 3 *
spatel465 0:adce77867281 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
spatel465 0:adce77867281 5 * of this software and associated documentation files (the "Software"), to deal
spatel465 0:adce77867281 6 * in the Software without restriction, including without limitation the rights
spatel465 0:adce77867281 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
spatel465 0:adce77867281 8 * copies of the Software, and to permit persons to whom the Software is
spatel465 0:adce77867281 9 * furnished to do so, subject to the following conditions:
spatel465 0:adce77867281 10 *
spatel465 0:adce77867281 11 * The above copyright notice and this permission notice shall be included in
spatel465 0:adce77867281 12 * all copies or substantial portions of the Software.
spatel465 0:adce77867281 13 *
spatel465 0:adce77867281 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
spatel465 0:adce77867281 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
spatel465 0:adce77867281 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
spatel465 0:adce77867281 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
spatel465 0:adce77867281 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
spatel465 0:adce77867281 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
spatel465 0:adce77867281 20 * SOFTWARE.
spatel465 0:adce77867281 21 */
spatel465 0:adce77867281 22 #include "rtos/Mutex.h"
spatel465 0:adce77867281 23
spatel465 0:adce77867281 24 #include <string.h>
spatel465 0:adce77867281 25 #include "platform/mbed_error.h"
spatel465 0:adce77867281 26
spatel465 0:adce77867281 27 namespace rtos {
spatel465 0:adce77867281 28
spatel465 0:adce77867281 29 Mutex::Mutex() {
spatel465 0:adce77867281 30 #ifdef CMSIS_OS_RTX
spatel465 0:adce77867281 31 memset(_mutex_data, 0, sizeof(_mutex_data));
spatel465 0:adce77867281 32 _osMutexDef.mutex = _mutex_data;
spatel465 0:adce77867281 33 #endif
spatel465 0:adce77867281 34 _osMutexId = osMutexCreate(&_osMutexDef);
spatel465 0:adce77867281 35 if (_osMutexId == NULL) {
spatel465 0:adce77867281 36 error("Error initializing the mutex object\n");
spatel465 0:adce77867281 37 }
spatel465 0:adce77867281 38 }
spatel465 0:adce77867281 39
spatel465 0:adce77867281 40 osStatus Mutex::lock(uint32_t millisec) {
spatel465 0:adce77867281 41 return osMutexWait(_osMutexId, millisec);
spatel465 0:adce77867281 42 }
spatel465 0:adce77867281 43
spatel465 0:adce77867281 44 bool Mutex::trylock() {
spatel465 0:adce77867281 45 return (osMutexWait(_osMutexId, 0) == osOK);
spatel465 0:adce77867281 46 }
spatel465 0:adce77867281 47
spatel465 0:adce77867281 48 osStatus Mutex::unlock() {
spatel465 0:adce77867281 49 return osMutexRelease(_osMutexId);
spatel465 0:adce77867281 50 }
spatel465 0:adce77867281 51
spatel465 0:adce77867281 52 Mutex::~Mutex() {
spatel465 0:adce77867281 53 osMutexDelete(_osMutexId);
spatel465 0:adce77867281 54 }
spatel465 0:adce77867281 55
spatel465 0:adce77867281 56 }