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Diff: targets/TARGET_STM/TARGET_STM32F4/device/stm32f4xx_ll_crc.c
- Revision:
- 0:13413ea9a877
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/TARGET_STM/TARGET_STM32F4/device/stm32f4xx_ll_crc.c Sun Jun 12 14:02:44 2022 +0000 @@ -0,0 +1,126 @@ +/** + ****************************************************************************** + * @file stm32f4xx_ll_crc.c + * @author MCD Application Team + * @version V1.7.1 + * @date 14-April-2017 + * @brief CRC LL module driver. + ****************************************************************************** + * @attention + * + * <h2><center>© COPYRIGHT(c) 2017 STMicroelectronics</center></h2> + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. Neither the name of STMicroelectronics nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************** + */ +#if defined(USE_FULL_LL_DRIVER) + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f4xx_ll_crc.h" +#include "stm32f4xx_ll_bus.h" + +#ifdef USE_FULL_ASSERT +#include "stm32_assert.h" +#else +#define assert_param(expr) ((void)0U) +#endif + +/** @addtogroup STM32F4xx_LL_Driver + * @{ + */ + +#if defined (CRC) + +/** @addtogroup CRC_LL + * @{ + */ + +/* Private types -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private constants ---------------------------------------------------------*/ +/* Private macros ------------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ + +/* Exported functions --------------------------------------------------------*/ +/** @addtogroup CRC_LL_Exported_Functions + * @{ + */ + +/** @addtogroup CRC_LL_EF_Init + * @{ + */ + +/** + * @brief De-initialize CRC registers (Registers restored to their default values). + * @param CRCx CRC Instance + * @retval An ErrorStatus enumeration value: + * - SUCCESS: CRC registers are de-initialized + * - ERROR: CRC registers are not de-initialized + */ +ErrorStatus LL_CRC_DeInit(CRC_TypeDef *CRCx) +{ + ErrorStatus status = SUCCESS; + + /* Check the parameters */ + assert_param(IS_CRC_ALL_INSTANCE(CRCx)); + + if (CRCx == CRC) + { + /* Force CRC reset */ + LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_CRC); + + /* Release CRC reset */ + LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_CRC); + } + else + { + status = ERROR; + } + + return (status); +} + +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ + +#endif /* defined (CRC) */ + +/** + * @} + */ + +#endif /* USE_FULL_LL_DRIVER */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ + +