FFT LED Display / 4180_EditThis_copy_Demo_Test

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Dependencies:   FFT

mbed-rtos/rtos/Mutex.h@11:951bbb0385aa, 2020-12-04 (annotated)

Committer:
dimitryjl23
Date:
Fri Dec 04 18:01:22 2020 +0000
Revision:
11:951bbb0385aa
Parent:
0:d6c9b09b4042 
Final :)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
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 #ifndef MUTEX_H
annieluo2 0:d6c9b09b4042 23 #define MUTEX_H
annieluo2 0:d6c9b09b4042 24
annieluo2 0:d6c9b09b4042 25 #include <stdint.h>
annieluo2 0:d6c9b09b4042 26 #include "cmsis_os.h"
annieluo2 0:d6c9b09b4042 27
annieluo2 0:d6c9b09b4042 28 namespace rtos {
annieluo2 0:d6c9b09b4042 29 /** \addtogroup rtos */
annieluo2 0:d6c9b09b4042 30 /** @{*/
annieluo2 0:d6c9b09b4042 31
annieluo2 0:d6c9b09b4042 32 /** The Mutex class is used to synchronise the execution of threads.
annieluo2 0:d6c9b09b4042 33 This is for example used to protect access to a shared resource.
annieluo2 0:d6c9b09b4042 34 */
annieluo2 0:d6c9b09b4042 35 class Mutex {
annieluo2 0:d6c9b09b4042 36 public:
annieluo2 0:d6c9b09b4042 37 /** Create and Initialize a Mutex object */
annieluo2 0:d6c9b09b4042 38 Mutex();
annieluo2 0:d6c9b09b4042 39
annieluo2 0:d6c9b09b4042 40 /** Wait until a Mutex becomes available.
annieluo2 0:d6c9b09b4042 41 @param millisec timeout value or 0 in case of no time-out. (default: osWaitForever)
annieluo2 0:d6c9b09b4042 42 @return status code that indicates the execution status of the function.
annieluo2 0:d6c9b09b4042 43 */
annieluo2 0:d6c9b09b4042 44 osStatus lock(uint32_t millisec=osWaitForever);
annieluo2 0:d6c9b09b4042 45
annieluo2 0:d6c9b09b4042 46 /** Try to lock the mutex, and return immediately
annieluo2 0:d6c9b09b4042 47 @return true if the mutex was acquired, false otherwise.
annieluo2 0:d6c9b09b4042 48 */
annieluo2 0:d6c9b09b4042 49 bool trylock();
annieluo2 0:d6c9b09b4042 50
annieluo2 0:d6c9b09b4042 51 /** Unlock the mutex that has previously been locked by the same thread
annieluo2 0:d6c9b09b4042 52 @return status code that indicates the execution status of the function.
annieluo2 0:d6c9b09b4042 53 */
annieluo2 0:d6c9b09b4042 54 osStatus unlock();
annieluo2 0:d6c9b09b4042 55
annieluo2 0:d6c9b09b4042 56 ~Mutex();
annieluo2 0:d6c9b09b4042 57
annieluo2 0:d6c9b09b4042 58 private:
annieluo2 0:d6c9b09b4042 59 osMutexId _osMutexId;
annieluo2 0:d6c9b09b4042 60 osMutexDef_t _osMutexDef;
annieluo2 0:d6c9b09b4042 61 #ifdef CMSIS_OS_RTX
annieluo2 0:d6c9b09b4042 62 #if defined(__MBED_CMSIS_RTOS_CA9) || defined(__MBED_CMSIS_RTOS_CM)
annieluo2 0:d6c9b09b4042 63 int32_t _mutex_data[4];
annieluo2 0:d6c9b09b4042 64 #else
annieluo2 0:d6c9b09b4042 65 int32_t _mutex_data[3];
annieluo2 0:d6c9b09b4042 66 #endif
annieluo2 0:d6c9b09b4042 67 #endif
annieluo2 0:d6c9b09b4042 68 };
annieluo2 0:d6c9b09b4042 69
annieluo2 0:d6c9b09b4042 70 }
annieluo2 0:d6c9b09b4042 71 #endif
annieluo2 0:d6c9b09b4042 72
annieluo2 0:d6c9b09b4042 73 /** @}*/