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Diffstat (limited to 'c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_crc.c')
-rw-r--r-- | c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_crc.c | 509 |
1 files changed, 0 insertions, 509 deletions
diff --git a/c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_crc.c b/c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_crc.c deleted file mode 100644 index e4c1686665..0000000000 --- a/c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_crc.c +++ /dev/null @@ -1,509 +0,0 @@ -/** - ****************************************************************************** - * @file stm32f7xx_hal_crc.c - * @author MCD Application Team - * @version V1.0.1 - * @date 25-June-2015 - * @brief CRC HAL module driver. - * This file provides firmware functions to manage the following - * functionalities of the Cyclic Redundancy Check (CRC) peripheral: - * + Initialization and de-initialization functions - * + Peripheral Control functions - * + Peripheral State functions - * - @verbatim - =============================================================================== - ##### CRC How to use this driver ##### - =============================================================================== - [..] - - (#) Enable CRC AHB clock using __HAL_RCC_CRC_CLK_ENABLE(); - - (#) Initialize CRC calculator - (++) specify generating polynomial (IP default or non-default one) - (++) specify initialization value (IP default or non-default one) - (++) specify input data format - (++) specify input or output data inversion mode if any - - (#) Use HAL_CRC_Accumulate() function to compute the CRC value of the - input data buffer starting with the previously computed CRC as - initialization value - - (#) Use HAL_CRC_Calculate() function to compute the CRC value of the - input data buffer starting with the defined initialization value - (default or non-default) to initiate CRC calculation - - @endverbatim - ****************************************************************************** - * @attention - * - * <h2><center>© COPYRIGHT(c) 2015 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. - * - ****************************************************************************** - */ - -/* Includes ------------------------------------------------------------------*/ -#include "stm32f7xx_hal.h" - -/** @addtogroup STM32F7xx_HAL_Driver - * @{ - */ - -/** @defgroup CRC CRC - * @brief CRC HAL module driver. - * @{ - */ - -#ifdef HAL_CRC_MODULE_ENABLED - -/* Private typedef -----------------------------------------------------------*/ -/* Private define ------------------------------------------------------------*/ -/* Private macro -------------------------------------------------------------*/ -/* Private variables ---------------------------------------------------------*/ -/* Private function prototypes -----------------------------------------------*/ -static uint32_t CRC_Handle_8(CRC_HandleTypeDef *hcrc, uint8_t pBuffer[], uint32_t BufferLength); -static uint32_t CRC_Handle_16(CRC_HandleTypeDef *hcrc, uint16_t pBuffer[], uint32_t BufferLength); -/* Exported functions --------------------------------------------------------*/ - -/** @defgroup CRC_Exported_Functions CRC Exported Functions - * @{ - */ - -/** @defgroup HAL_CRC_Group1 Initialization/de-initialization functions - * @brief Initialization and Configuration functions. - * -@verbatim - =============================================================================== - ##### Initialization and de-initialization functions ##### - =============================================================================== - [..] This section provides functions allowing to: - (+) Initialize the CRC according to the specified parameters - in the CRC_InitTypeDef and create the associated handle - (+) DeInitialize the CRC peripheral - (+) Initialize the CRC MSP - (+) DeInitialize CRC MSP - -@endverbatim - * @{ - */ - -/** - * @brief Initializes the CRC according to the specified - * parameters in the CRC_InitTypeDef and creates the associated handle. - * @param hcrc: CRC handle - * @retval HAL status - */ -HAL_StatusTypeDef HAL_CRC_Init(CRC_HandleTypeDef *hcrc) -{ - /* Check the CRC handle allocation */ - if(hcrc == NULL) - { - return HAL_ERROR; - } - - /* Check the parameters */ - assert_param(IS_CRC_ALL_INSTANCE(hcrc->Instance)); - - if(hcrc->State == HAL_CRC_STATE_RESET) - { - /* Allocate lock resource and initialize it */ - hcrc->Lock = HAL_UNLOCKED; - /* Init the low level hardware */ - HAL_CRC_MspInit(hcrc); - } - - /* Change CRC peripheral state */ - hcrc->State = HAL_CRC_STATE_BUSY; - - /* check whether or not non-default generating polynomial has been - * picked up by user */ - assert_param(IS_DEFAULT_POLYNOMIAL(hcrc->Init.DefaultPolynomialUse)); - if (hcrc->Init.DefaultPolynomialUse == DEFAULT_POLYNOMIAL_ENABLE) - { - /* initialize IP with default generating polynomial */ - WRITE_REG(hcrc->Instance->POL, DEFAULT_CRC32_POLY); - MODIFY_REG(hcrc->Instance->CR, CRC_CR_POLYSIZE, CRC_POLYLENGTH_32B); - } - else - { - /* initialize CRC IP with generating polynomial defined by user */ - if (HAL_CRCEx_Polynomial_Set(hcrc, hcrc->Init.GeneratingPolynomial, hcrc->Init.CRCLength) != HAL_OK) - { - return HAL_ERROR; - } - } - - /* check whether or not non-default CRC initial value has been - * picked up by user */ - assert_param(IS_DEFAULT_INIT_VALUE(hcrc->Init.DefaultInitValueUse)); - if (hcrc->Init.DefaultInitValueUse == DEFAULT_INIT_VALUE_ENABLE) - { - WRITE_REG(hcrc->Instance->INIT, DEFAULT_CRC_INITVALUE); - } - else - { - WRITE_REG(hcrc->Instance->INIT, hcrc->Init.InitValue); - } - - - /* set input data inversion mode */ - assert_param(IS_CRC_INPUTDATA_INVERSION_MODE(hcrc->Init.InputDataInversionMode)); - MODIFY_REG(hcrc->Instance->CR, CRC_CR_REV_IN, hcrc->Init.InputDataInversionMode); - - /* set output data inversion mode */ - assert_param(IS_CRC_OUTPUTDATA_INVERSION_MODE(hcrc->Init.OutputDataInversionMode)); - MODIFY_REG(hcrc->Instance->CR, CRC_CR_REV_OUT, hcrc->Init.OutputDataInversionMode); - - /* makes sure the input data format (bytes, halfwords or words stream) - * is properly specified by user */ - assert_param(IS_CRC_INPUTDATA_FORMAT(hcrc->InputDataFormat)); - - /* Change CRC peripheral state */ - hcrc->State = HAL_CRC_STATE_READY; - - /* Return function status */ - return HAL_OK; -} - -/** - * @brief DeInitializes the CRC peripheral. - * @param hcrc: CRC handle - * @retval HAL status - */ -HAL_StatusTypeDef HAL_CRC_DeInit(CRC_HandleTypeDef *hcrc) -{ - /* Check the CRC handle allocation */ - if(hcrc == NULL) - { - return HAL_ERROR; - } - - /* Check the parameters */ - assert_param(IS_CRC_ALL_INSTANCE(hcrc->Instance)); - - /* Check the CRC peripheral state */ - if(hcrc->State == HAL_CRC_STATE_BUSY) - { - return HAL_BUSY; - } - - /* Change CRC peripheral state */ - hcrc->State = HAL_CRC_STATE_BUSY; - - /* Reset CRC calculation unit */ - __HAL_CRC_DR_RESET(hcrc); - - /* DeInit the low level hardware */ - HAL_CRC_MspDeInit(hcrc); - - /* Change CRC peripheral state */ - hcrc->State = HAL_CRC_STATE_RESET; - - /* Process unlocked */ - __HAL_UNLOCK(hcrc); - - /* Return function status */ - return HAL_OK; -} - -/** - * @brief Initializes the CRC MSP. - * @param hcrc: CRC handle - * @retval None - */ -__weak void HAL_CRC_MspInit(CRC_HandleTypeDef *hcrc) -{ - /* NOTE : This function should not be modified, when the callback is needed, - the HAL_CRC_MspInit can be implemented in the user file - */ -} - -/** - * @brief DeInitializes the CRC MSP. - * @param hcrc: CRC handle - * @retval None - */ -__weak void HAL_CRC_MspDeInit(CRC_HandleTypeDef *hcrc) -{ - /* NOTE : This function should not be modified, when the callback is needed, - the HAL_CRC_MspDeInit can be implemented in the user file - */ -} - -/** - * @} - */ - -/** @defgroup HAL_CRC_Group2 Peripheral Control functions - * @brief Peripheral Control functions - * -@verbatim - ============================================================================== - ##### Peripheral Control functions ##### - ============================================================================== - [..] This section provides functions allowing to: - (+) Compute the 7, 8, 16 or 32-bit CRC value of an 8, 16 or 32-bit data buffer - using combination of the previous CRC value and the new one. - - or - - (+) Compute the 7, 8, 16 or 32-bit CRC value of an 8, 16 or 32-bit data buffer - independently of the previous CRC value. - -@endverbatim - * @{ - */ - -/** - * @brief Compute the 7, 8, 16 or 32-bit CRC value of an 8, 16 or 32-bit data buffer - * starting with the previously computed CRC as initialization value. - * @param hcrc: CRC handle - * @param pBuffer: pointer to the input data buffer, exact input data format is - * provided by hcrc->InputDataFormat. - * @param BufferLength: input data buffer length - * @retval uint32_t CRC (returned value LSBs for CRC shorter than 32 bits) - */ -uint32_t HAL_CRC_Accumulate(CRC_HandleTypeDef *hcrc, uint32_t pBuffer[], uint32_t BufferLength) -{ - uint32_t index = 0; /* CRC input data buffer index */ - uint32_t temp = 0; /* CRC output (read from hcrc->Instance->DR register) */ - - /* Process locked */ - __HAL_LOCK(hcrc); - - /* Change CRC peripheral state */ - hcrc->State = HAL_CRC_STATE_BUSY; - - switch (hcrc->InputDataFormat) - { - case CRC_INPUTDATA_FORMAT_WORDS: - /* Enter Data to the CRC calculator */ - for(index = 0; index < BufferLength; index++) - { - hcrc->Instance->DR = pBuffer[index]; - } - temp = hcrc->Instance->DR; - break; - - case CRC_INPUTDATA_FORMAT_BYTES: - temp = CRC_Handle_8(hcrc, (uint8_t*)pBuffer, BufferLength); - break; - - case CRC_INPUTDATA_FORMAT_HALFWORDS: - temp = CRC_Handle_16(hcrc, (uint16_t*)pBuffer, BufferLength); - break; - default: - break; - } - - /* Change CRC peripheral state */ - hcrc->State = HAL_CRC_STATE_READY; - - /* Process unlocked */ - __HAL_UNLOCK(hcrc); - - /* Return the CRC computed value */ - return temp; -} - - -/** - * @brief Compute the 7, 8, 16 or 32-bit CRC value of an 8, 16 or 32-bit data buffer - * starting with hcrc->Instance->INIT as initialization value. - * @param hcrc: CRC handle - * @param pBuffer: pointer to the input data buffer, exact input data format is - * provided by hcrc->InputDataFormat. - * @param BufferLength: input data buffer length - * @retval uint32_t CRC (returned value LSBs for CRC shorter than 32 bits) - */ -uint32_t HAL_CRC_Calculate(CRC_HandleTypeDef *hcrc, uint32_t pBuffer[], uint32_t BufferLength) -{ - uint32_t index = 0; /* CRC input data buffer index */ - uint32_t temp = 0; /* CRC output (read from hcrc->Instance->DR register) */ - - /* Process locked */ - __HAL_LOCK(hcrc); - - /* Change CRC peripheral state */ - hcrc->State = HAL_CRC_STATE_BUSY; - - /* Reset CRC Calculation Unit (hcrc->Instance->INIT is - * written in hcrc->Instance->DR) */ - __HAL_CRC_DR_RESET(hcrc); - - switch (hcrc->InputDataFormat) - { - case CRC_INPUTDATA_FORMAT_WORDS: - /* Enter 32-bit input data to the CRC calculator */ - for(index = 0; index < BufferLength; index++) - { - hcrc->Instance->DR = pBuffer[index]; - } - temp = hcrc->Instance->DR; - break; - - case CRC_INPUTDATA_FORMAT_BYTES: - /* Specific 8-bit input data handling */ - temp = CRC_Handle_8(hcrc, (uint8_t*)pBuffer, BufferLength); - break; - - case CRC_INPUTDATA_FORMAT_HALFWORDS: - /* Specific 16-bit input data handling */ - temp = CRC_Handle_16(hcrc, (uint16_t*)pBuffer, BufferLength); - break; - default: - break; - } - - /* Change CRC peripheral state */ - hcrc->State = HAL_CRC_STATE_READY; - - /* Process unlocked */ - __HAL_UNLOCK(hcrc); - - /* Return the CRC computed value */ - return temp; -} - - - -/** - * @brief Enter 8-bit input data to the CRC calculator. - * Specific data handling to optimize processing time. - * @param hcrc: CRC handle - * @param pBuffer: pointer to the input data buffer - * @param BufferLength: input data buffer length - * @retval uint32_t CRC (returned value LSBs for CRC shorter than 32 bits) - */ -static uint32_t CRC_Handle_8(CRC_HandleTypeDef *hcrc, uint8_t pBuffer[], uint32_t BufferLength) -{ - uint32_t i = 0; /* input data buffer index */ - - /* Processing time optimization: 4 bytes are entered in a row with a single word write, - * last bytes must be carefully fed to the CRC calculator to ensure a correct type - * handling by the IP */ - for(i = 0; i < (BufferLength/4); i++) - { - hcrc->Instance->DR = (uint32_t)(((uint32_t)(pBuffer[4*i])<<24) | ((uint32_t)(pBuffer[4*i+1])<<16) | ((uint32_t)(pBuffer[4*i+2])<<8) | (uint32_t)(pBuffer[4*i+3])); - } - /* last bytes specific handling */ - if ((BufferLength%4) != 0) - { - if (BufferLength%4 == 1) - { - *(__IO uint8_t*) (&hcrc->Instance->DR) = pBuffer[4*i]; - } - if (BufferLength%4 == 2) - { - *(__IO uint32_t*) (&hcrc->Instance->DR) = (uint16_t)(((uint32_t)(pBuffer[4*i])<<8) | (uint32_t)(pBuffer[4*i+1])); - } - if (BufferLength%4 == 3) - { - *(__IO uint32_t*) (&hcrc->Instance->DR) = (uint16_t)(((uint32_t)(pBuffer[4*i])<<8) | (uint32_t)(pBuffer[4*i+1])); - *(__IO uint32_t*) (&hcrc->Instance->DR) = pBuffer[4*i+2]; - } - } - - /* Return the CRC computed value */ - return hcrc->Instance->DR; -} - - - -/** - * @brief Enter 16-bit input data to the CRC calculator. - * Specific data handling to optimize processing time. - * @param hcrc: CRC handle - * @param pBuffer: pointer to the input data buffer - * @param BufferLength: input data buffer length - * @retval uint32_t CRC (returned value LSBs for CRC shorter than 32 bits) - */ -static uint32_t CRC_Handle_16(CRC_HandleTypeDef *hcrc, uint16_t pBuffer[], uint32_t BufferLength) -{ - uint32_t i = 0; /* input data buffer index */ - - /* Processing time optimization: 2 HalfWords are entered in a row with a single word write, - * in case of odd length, last HalfWord must be carefully fed to the CRC calculator to ensure - * a correct type handling by the IP */ - for(i = 0; i < (BufferLength/2); i++) - { - hcrc->Instance->DR = (((uint32_t)(pBuffer[2*i])<<16) | (uint32_t)(pBuffer[2*i+1])); - } - if ((BufferLength%2) != 0) - { - *(__IO uint32_t*) (&hcrc->Instance->DR) = pBuffer[2*i]; - } - - /* Return the CRC computed value */ - return hcrc->Instance->DR; -} - -/** - * @} - */ - -/** @defgroup HAL_CRC_Group3 Peripheral State functions - * @brief Peripheral State functions. - * -@verbatim - ============================================================================== - ##### Peripheral State functions ##### - ============================================================================== - [..] - This subsection permits to get in run-time the status of the peripheral - and the data flow. - -@endverbatim - * @{ - */ - -/** - * @brief Returns the CRC state. - * @param hcrc: CRC handle - * @retval HAL state - */ -HAL_CRC_StateTypeDef HAL_CRC_GetState(CRC_HandleTypeDef *hcrc) -{ - return hcrc->State; -} - -/** - * @} - */ - -/** - * @} - */ - -#endif /* HAL_CRC_MODULE_ENABLED */ -/** - * @} - */ - -/** - * @} - */ - -/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |