| /** |
| ****************************************************************************** |
| * @file stm32f3xx_ll_crc.c |
| * @author MCD Application Team |
| * @version V1.4.0 |
| * @date 16-December-2016 |
| * @brief CRC LL module driver. |
| ****************************************************************************** |
| * @attention |
| * |
| * <h2><center>© COPYRIGHT(c) 2016 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 "stm32f3xx_ll_crc.h" |
| |
| #ifdef USE_FULL_ASSERT |
| #include "stm32_assert.h" |
| #else |
| #define assert_param(expr) ((void)0U) |
| #endif |
| |
| /** @addtogroup STM32F3xx_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) |
| { |
| /* Set programmable polynomial size in CR register to reset value (32 bits)*/ |
| LL_CRC_SetPolynomialSize(CRCx, LL_CRC_POLYLENGTH_32B); |
| |
| /* Set programmable polynomial in POL register to reset value */ |
| LL_CRC_SetPolynomialCoef(CRCx, LL_CRC_DEFAULT_CRC32_POLY); |
| |
| /* Set INIT register to reset value */ |
| LL_CRC_SetInitialData(CRCx, LL_CRC_DEFAULT_CRC_INITVALUE); |
| |
| /* Set Reversibility options on I/O data values in CR register to reset value */ |
| LL_CRC_SetInputDataReverseMode(CRCx, LL_CRC_INDATA_REVERSE_NONE); |
| LL_CRC_SetOutputDataReverseMode(CRCx, LL_CRC_OUTDATA_REVERSE_NONE); |
| |
| /* Reset the CRC calculation unit */ |
| LL_CRC_ResetCRCCalculationUnit(CRCx); |
| |
| /* Reset IDR register */ |
| LL_CRC_Write_IDR(CRCx, 0x00U); |
| } |
| else |
| { |
| status = ERROR; |
| } |
| |
| return (status); |
| } |
| |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| #endif /* defined (CRC) */ |
| |
| /** |
| * @} |
| */ |
| |
| #endif /* USE_FULL_LL_DRIVER */ |
| |
| /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |