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107 lines
2.9 KiB
C
107 lines
2.9 KiB
C
/**
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* Portions COPYRIGHT 2018 STMicroelectronics, All Rights Reserved
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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 implementation 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
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* All rights reserved.</center></h2>
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*
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* This software component is licensed by ST under Apache 2.0 license,
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* the "License"; You may not use this file except in compliance with the
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* License. You may obtain a copy of the License at:
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* https://opensource.org/licenses/Apache-2.0
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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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