36372 mbed / Mbed 2 deprecated SP14P1_skeleton

skeleton for lab1

Dependencies:   AvailableMemory mbed-rtos mbed

Fork of helloaabbc by 32314 mbed

mbed-rtos/rtos/Mutex.cpp@1:55e99f6e2aa5, 2014-04-04 (annotated)

Committer:
mbed36372
Date:
Fri Apr 04 21:31:22 2014 +0000
Revision:
1:55e99f6e2aa5
Parent:
0:1c8f2727e9f5 
SP14_lab1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
y7jin 0:1c8f2727e9f5 1 /* mbed Microcontroller Library
y7jin 0:1c8f2727e9f5 2 * Copyright (c) 2006-2012 ARM Limited
y7jin 0:1c8f2727e9f5 3 *
y7jin 0:1c8f2727e9f5 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
y7jin 0:1c8f2727e9f5 5 * of this software and associated documentation files (the "Software"), to deal
y7jin 0:1c8f2727e9f5 6 * in the Software without restriction, including without limitation the rights
y7jin 0:1c8f2727e9f5 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
y7jin 0:1c8f2727e9f5 8 * copies of the Software, and to permit persons to whom the Software is
y7jin 0:1c8f2727e9f5 9 * furnished to do so, subject to the following conditions:
y7jin 0:1c8f2727e9f5 10 *
y7jin 0:1c8f2727e9f5 11 * The above copyright notice and this permission notice shall be included in
y7jin 0:1c8f2727e9f5 12 * all copies or substantial portions of the Software.
y7jin 0:1c8f2727e9f5 13 *
y7jin 0:1c8f2727e9f5 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
y7jin 0:1c8f2727e9f5 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
y7jin 0:1c8f2727e9f5 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
y7jin 0:1c8f2727e9f5 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
y7jin 0:1c8f2727e9f5 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
y7jin 0:1c8f2727e9f5 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
y7jin 0:1c8f2727e9f5 20 * SOFTWARE.
y7jin 0:1c8f2727e9f5 21 */
y7jin 0:1c8f2727e9f5 22 #include "Mutex.h"
y7jin 0:1c8f2727e9f5 23
y7jin 0:1c8f2727e9f5 24 #include <string.h>
y7jin 0:1c8f2727e9f5 25 #include "error.h"
y7jin 0:1c8f2727e9f5 26
y7jin 0:1c8f2727e9f5 27 namespace rtos {
y7jin 0:1c8f2727e9f5 28
y7jin 0:1c8f2727e9f5 29 Mutex::Mutex() {
y7jin 0:1c8f2727e9f5 30 #ifdef CMSIS_OS_RTX
y7jin 0:1c8f2727e9f5 31 memset(_mutex_data, 0, sizeof(_mutex_data));
y7jin 0:1c8f2727e9f5 32 _osMutexDef.mutex = _mutex_data;
y7jin 0:1c8f2727e9f5 33 #endif
y7jin 0:1c8f2727e9f5 34 _osMutexId = osMutexCreate(&_osMutexDef);
y7jin 0:1c8f2727e9f5 35 if (_osMutexId == NULL) {
y7jin 0:1c8f2727e9f5 36 error("Error initializing the mutex object\n");
y7jin 0:1c8f2727e9f5 37 }
y7jin 0:1c8f2727e9f5 38 }
y7jin 0:1c8f2727e9f5 39
y7jin 0:1c8f2727e9f5 40 osStatus Mutex::lock(uint32_t millisec) {
y7jin 0:1c8f2727e9f5 41 return osMutexWait(_osMutexId, millisec);
y7jin 0:1c8f2727e9f5 42 }
y7jin 0:1c8f2727e9f5 43
y7jin 0:1c8f2727e9f5 44 bool Mutex::trylock() {
y7jin 0:1c8f2727e9f5 45 return (osMutexWait(_osMutexId, 0) == osOK);
y7jin 0:1c8f2727e9f5 46 }
y7jin 0:1c8f2727e9f5 47
y7jin 0:1c8f2727e9f5 48 osStatus Mutex::unlock() {
y7jin 0:1c8f2727e9f5 49 return osMutexRelease(_osMutexId);
y7jin 0:1c8f2727e9f5 50 }
y7jin 0:1c8f2727e9f5 51
y7jin 0:1c8f2727e9f5 52 Mutex::~Mutex() {
y7jin 0:1c8f2727e9f5 53 osMutexDelete(_osMutexId);
y7jin 0:1c8f2727e9f5 54 }
y7jin 0:1c8f2727e9f5 55
y7jin 0:1c8f2727e9f5 56 }