Official mbed Real Time Operating System based on the RTX implementation of the CMSIS-RTOS API open standard. Support for nucleo F401RE
Dependents: rtos_basic_stm32_F401
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Semaphore.cpp
00001 /* mbed Microcontroller Library 00002 * Copyright (c) 2006-2012 ARM Limited 00003 * 00004 * Permission is hereby granted, free of charge, to any person obtaining a copy 00005 * of this software and associated documentation files (the "Software"), to deal 00006 * in the Software without restriction, including without limitation the rights 00007 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 00008 * copies of the Software, and to permit persons to whom the Software is 00009 * furnished to do so, subject to the following conditions: 00010 * 00011 * The above copyright notice and this permission notice shall be included in 00012 * all copies or substantial portions of the Software. 00013 * 00014 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 00015 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 00016 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 00017 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 00018 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 00019 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 00020 * SOFTWARE. 00021 */ 00022 #include "Semaphore.h" 00023 00024 #include <string.h> 00025 #include "error.h" 00026 00027 namespace rtos { 00028 00029 Semaphore::Semaphore(int32_t count) { 00030 #ifdef CMSIS_OS_RTX 00031 memset(_semaphore_data, 0, sizeof(_semaphore_data)); 00032 _osSemaphoreDef.semaphore = _semaphore_data; 00033 #endif 00034 _osSemaphoreId = osSemaphoreCreate(&_osSemaphoreDef, count); 00035 } 00036 00037 int32_t Semaphore::wait(uint32_t millisec) { 00038 return osSemaphoreWait(_osSemaphoreId, millisec); 00039 } 00040 00041 osStatus Semaphore::release(void) { 00042 return osSemaphoreRelease(_osSemaphoreId); 00043 } 00044 00045 Semaphore::~Semaphore() { 00046 osSemaphoreDelete(_osSemaphoreId); 00047 } 00048 00049 }
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