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126 lines
4.4 KiB
C
126 lines
4.4 KiB
C
/**
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* Portions COPYRIGHT 2018 STMicroelectronics
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* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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*
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********************************************************************************
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* @file threading_alt_template.c
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* @author MCD Application Team
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* @brief mutex management functions iplementation based on cmsis-os V1/V2
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API. This file to be copied under the application project source tree.
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********************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT(c) 2018 STMicroelectronics</center></h2>
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* 1. Redistribution of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of other
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* contributors to this software may be used to endorse or promote products
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* derived from this software without specific written permission.
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* 4. This software, including modifications and/or derivative works of this
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* software, must execute solely and exclusively on microcontroller or
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* microprocessor devices manufactured by or for STMicroelectronics.
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* 5. Redistribution and use of this software other than as permitted under
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* this license is void and will automatically terminate your rights under
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* this license.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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*/
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/*
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* This files implments the mbedTLS mutex management API using the CMSIS-RTOS
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* V1 & V2 API. To correctly use this file make sure that:
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*
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* - this file as well as the "threading_alt_template.h" files are renamed
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* and copied under the project source tree.
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*
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* - The project seetings are pointing to the correct CMSIS-RTOS files
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*
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* - the mbedTLS config file is enabling the flags "MBEDTLS_THREADING_C" and
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* "MBEDTLS_THREADING_ALT"
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*
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* - the mbedtls_set_threading_alt(...) is called before any other mbedtls
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* API, in order to register the cmisis_os_mutex_xxx() API.
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*
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*/
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#include "threading_alt.h"
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#if defined(MBEDTLS_THREADING_ALT)
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void cmsis_os_mutex_init( mbedtls_threading_mutex_t *mutex )
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{
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#if (osCMSIS < 0x20000U)
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osMutexDef(thread_mutex);
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mutex->mutex_id = osMutexCreate(osMutex(thread_mutex));
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#else
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mutex->mutex_id = osMutexNew(NULL);
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#endif
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if (mutex->mutex_id != NULL)
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{
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mutex->status = osOK;
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}
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else
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{
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mutex->status = osErrorOS;
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}
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}
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void cmsis_os_mutex_free( mbedtls_threading_mutex_t *mutex )
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{
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if (mutex->mutex_id != NULL)
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{
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osMutexDelete(mutex->mutex_id);
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}
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}
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int cmsis_os_mutex_lock( mbedtls_threading_mutex_t *mutex )
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{
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if ((mutex == NULL) || (mutex->mutex_id == NULL) || (mutex->status != osOK))
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{
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return MBEDTLS_ERR_THREADING_BAD_INPUT_DATA;
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}
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#if (osCMSIS < 0x20000U)
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mutex->status = osMutexWait(mutex->mutex_id, osWaitForever);
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#else
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mutex->status = osMutexAcquire(mutex->mutex_id, osWaitForever);
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#endif
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if (mutex->status != osOK)
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{
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return MBEDTLS_ERR_THREADING_MUTEX_ERROR;
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}
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return 0;
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}
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int cmsis_os_mutex_unlock( mbedtls_threading_mutex_t *mutex )
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{
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if((mutex == NULL) || (mutex->mutex_id == NULL) || (mutex->status != osOK))
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{
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return MBEDTLS_ERR_THREADING_BAD_INPUT_DATA;
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}
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mutex->status = osMutexRelease(mutex->mutex_id);
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if (mutex->status != osOK)
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{
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return MBEDTLS_ERR_THREADING_MUTEX_ERROR;
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}
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return 0;
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}
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#endif
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