summaryrefslogtreecommitdiffstats
path: root/bsps/arm/stm32h7/hal/stm32h7xx_hal_crc.c
diff options
context:
space:
mode:
Diffstat (limited to 'bsps/arm/stm32h7/hal/stm32h7xx_hal_crc.c')
-rw-r--r--bsps/arm/stm32h7/hal/stm32h7xx_hal_crc.c1034
1 files changed, 516 insertions, 518 deletions
diff --git a/bsps/arm/stm32h7/hal/stm32h7xx_hal_crc.c b/bsps/arm/stm32h7/hal/stm32h7xx_hal_crc.c
index fc16d0a806..dba66b7517 100644
--- a/bsps/arm/stm32h7/hal/stm32h7xx_hal_crc.c
+++ b/bsps/arm/stm32h7/hal/stm32h7xx_hal_crc.c
@@ -1,524 +1,522 @@
-/**
- ******************************************************************************
- * @file stm32h7xx_hal_crc.c
- * @author MCD Application Team
- * @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
- ===============================================================================
- ##### How to use this driver #####
- ===============================================================================
- [..]
- (+) Enable CRC AHB clock using __HAL_RCC_CRC_CLK_ENABLE();
- (+) Initialize CRC calculator
- (++) specify generating polynomial (peripheral default or non-default one)
- (++) specify initialization value (peripheral 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>&copy; Copyright (c) 2017 STMicroelectronics.
- * All rights reserved.</center></h2>
- *
- * This software component is licensed by ST under BSD 3-Clause license,
- * the "License"; You may not use this file except in compliance with the
- * License. You may obtain a copy of the License at:
- * opensource.org/licenses/BSD-3-Clause
- *
- ******************************************************************************
- */
-
-/* Includes ------------------------------------------------------------------*/
-#include "stm32h7xx_hal.h"
-
-/** @addtogroup STM32H7xx_HAL_Driver
- * @{
- */
-
-/** @defgroup CRC CRC
+/**
+ ******************************************************************************
+ * @file stm32h7xx_hal_crc.c
+ * @author MCD Application Team
+ * @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
+ *
+ ******************************************************************************
+ * @attention
+ *
+ * Copyright (c) 2017 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software is licensed under terms that can be found in the LICENSE file
+ * in the root directory of this software component.
+ * If no LICENSE file comes with this software, it is provided AS-IS.
+ *
+ ******************************************************************************
+ @verbatim
+ ===============================================================================
+ ##### How to use this driver #####
+ ===============================================================================
+ [..]
+ (+) Enable CRC AHB clock using __HAL_RCC_CRC_CLK_ENABLE();
+ (+) Initialize CRC calculator
+ (++) specify generating polynomial (peripheral default or non-default one)
+ (++) specify initialization value (peripheral 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
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32h7xx_hal.h"
+
+/** @addtogroup STM32H7xx_HAL_Driver
+ * @{
+ */
+
+/** @defgroup CRC CRC
* @ingroup RTEMSBSPsARMSTM32H7
- * @brief CRC HAL module driver.
- * @{
- */
-
-#ifdef HAL_CRC_MODULE_ENABLED
-
-/* Private typedef -----------------------------------------------------------*/
-/* Private define ------------------------------------------------------------*/
-/* Private macro -------------------------------------------------------------*/
-/* Private variables ---------------------------------------------------------*/
-/* Private function prototypes -----------------------------------------------*/
-/** @defgroup CRC_Private_Functions CRC Private Functions
+ * @brief CRC HAL module driver.
+ * @{
+ */
+
+#ifdef HAL_CRC_MODULE_ENABLED
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/** @defgroup CRC_Private_Functions CRC Private Functions
* @ingroup RTEMSBSPsARMSTM32H7
- * @{
- */
-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
+ * @{
+ */
+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
* @ingroup RTEMSBSPsARMSTM32H7
- * @{
- */
-
-/** @defgroup CRC_Exported_Functions_Group1 Initialization and de-initialization functions
+ * @{
+ */
+
+/** @defgroup CRC_Exported_Functions_Group1 Initialization and de-initialization functions
* @ingroup RTEMSBSPsARMSTM32H7
- * @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 (MCU Specific Package)
- (+) DeInitialize the CRC MSP
-
-@endverbatim
- * @{
- */
-
-/**
- * @brief Initialize the CRC according to the specified
- * parameters in the CRC_InitTypeDef and create 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);
- }
-
- 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 peripheral 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 peripheral 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 DeInitialize 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);
-
- /* Reset IDR register content */
- CLEAR_BIT(hcrc->Instance->IDR, CRC_IDR_IDR);
-
- /* 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)
-{
- /* Prevent unused argument(s) compilation warning */
- UNUSED(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 DeInitialize the CRC MSP.
- * @param hcrc CRC handle
- * @retval None
- */
-__weak void HAL_CRC_MspDeInit(CRC_HandleTypeDef *hcrc)
-{
- /* Prevent unused argument(s) compilation warning */
- UNUSED(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 CRC_Exported_Functions_Group2 Peripheral Control 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 (MCU Specific Package)
+ (+) DeInitialize the CRC MSP
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Initialize the CRC according to the specified
+ * parameters in the CRC_InitTypeDef and create 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);
+ }
+
+ 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 peripheral 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 peripheral 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 DeInitialize 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);
+
+ /* Reset IDR register content */
+ CLEAR_BIT(hcrc->Instance->IDR, CRC_IDR_IDR);
+
+ /* 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)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(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 DeInitialize the CRC MSP.
+ * @param hcrc CRC handle
+ * @retval None
+ */
+__weak void HAL_CRC_MspDeInit(CRC_HandleTypeDef *hcrc)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(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 CRC_Exported_Functions_Group2 Peripheral Control functions
* @ingroup RTEMSBSPsARMSTM32H7
- * @brief management 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 (number of bytes if pBuffer
- * type is * uint8_t, number of half-words if pBuffer type is * uint16_t,
- * number of words if pBuffer type is * uint32_t).
- * @note By default, the API expects a uint32_t pointer as input buffer parameter.
- * Input buffer pointers with other types simply need to be cast in uint32_t
- * and the API will internally adjust its input data processing based on the
- * handle field hcrc->InputDataFormat.
- * @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; /* CRC input data buffer index */
- uint32_t temp = 0U; /* CRC output (read from hcrc->Instance->DR register) */
-
- /* 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 = 0U; 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 *)(void *)pBuffer, BufferLength); /* Derogation MisraC2012 R.11.5 */
- break;
- default:
- break;
- }
-
- /* Change CRC peripheral state */
- hcrc->State = HAL_CRC_STATE_READY;
-
- /* 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 (number of bytes if pBuffer
- * type is * uint8_t, number of half-words if pBuffer type is * uint16_t,
- * number of words if pBuffer type is * uint32_t).
- * @note By default, the API expects a uint32_t pointer as input buffer parameter.
- * Input buffer pointers with other types simply need to be cast in uint32_t
- * and the API will internally adjust its input data processing based on the
- * handle field hcrc->InputDataFormat.
- * @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; /* CRC input data buffer index */
- uint32_t temp = 0U; /* CRC output (read from hcrc->Instance->DR register) */
-
- /* 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 = 0U; 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 *)(void *)pBuffer, BufferLength); /* Derogation MisraC2012 R.11.5 */
- break;
-
- default:
- break;
- }
-
- /* Change CRC peripheral state */
- hcrc->State = HAL_CRC_STATE_READY;
-
- /* Return the CRC computed value */
- return temp;
-}
-
-/**
- * @}
- */
-
-/** @defgroup CRC_Exported_Functions_Group3 Peripheral State functions
+ * @brief management 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 (number of bytes if pBuffer
+ * type is * uint8_t, number of half-words if pBuffer type is * uint16_t,
+ * number of words if pBuffer type is * uint32_t).
+ * @note By default, the API expects a uint32_t pointer as input buffer parameter.
+ * Input buffer pointers with other types simply need to be cast in uint32_t
+ * and the API will internally adjust its input data processing based on the
+ * handle field hcrc->InputDataFormat.
+ * @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; /* CRC input data buffer index */
+ uint32_t temp = 0U; /* CRC output (read from hcrc->Instance->DR register) */
+
+ /* 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 = 0U; 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 *)(void *)pBuffer, BufferLength); /* Derogation MisraC2012 R.11.5 */
+ break;
+ default:
+ break;
+ }
+
+ /* Change CRC peripheral state */
+ hcrc->State = HAL_CRC_STATE_READY;
+
+ /* 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 (number of bytes if pBuffer
+ * type is * uint8_t, number of half-words if pBuffer type is * uint16_t,
+ * number of words if pBuffer type is * uint32_t).
+ * @note By default, the API expects a uint32_t pointer as input buffer parameter.
+ * Input buffer pointers with other types simply need to be cast in uint32_t
+ * and the API will internally adjust its input data processing based on the
+ * handle field hcrc->InputDataFormat.
+ * @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; /* CRC input data buffer index */
+ uint32_t temp = 0U; /* CRC output (read from hcrc->Instance->DR register) */
+
+ /* 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 = 0U; 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 *)(void *)pBuffer, BufferLength); /* Derogation MisraC2012 R.11.5 */
+ break;
+
+ default:
+ break;
+ }
+
+ /* Change CRC peripheral state */
+ hcrc->State = HAL_CRC_STATE_READY;
+
+ /* Return the CRC computed value */
+ return temp;
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup CRC_Exported_Functions_Group3 Peripheral State functions
* @ingroup RTEMSBSPsARMSTM32H7
- * @brief Peripheral State functions.
- *
-@verbatim
- ===============================================================================
- ##### Peripheral State functions #####
- ===============================================================================
- [..]
- This subsection permits to get in run-time the status of the peripheral.
-
-@endverbatim
- * @{
- */
-
-/**
- * @brief Return the CRC handle state.
- * @param hcrc CRC handle
- * @retval HAL state
- */
-HAL_CRC_StateTypeDef HAL_CRC_GetState(CRC_HandleTypeDef *hcrc)
-{
- /* Return CRC handle state */
- return hcrc->State;
-}
-
-/**
- * @}
- */
-
-/**
- * @}
- */
-
-/** @addtogroup CRC_Private_Functions
- * @{
- */
-
-/**
- * @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; /* input data buffer index */
- uint16_t data;
- __IO uint16_t *pReg;
-
- /* 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 peripheral */
- for (i = 0U; i < (BufferLength / 4U); i++)
- {
- hcrc->Instance->DR = ((uint32_t)pBuffer[4U * i] << 24U) | \
- ((uint32_t)pBuffer[(4U * i) + 1U] << 16U) | \
- ((uint32_t)pBuffer[(4U * i) + 2U] << 8U) | \
- (uint32_t)pBuffer[(4U * i) + 3U];
- }
- /* last bytes specific handling */
- if ((BufferLength % 4U) != 0U)
- {
- if ((BufferLength % 4U) == 1U)
- {
- *(__IO uint8_t *)(__IO void *)(&hcrc->Instance->DR) = pBuffer[4U * i]; /* Derogation MisraC2012 R.11.5 */
- }
- if ((BufferLength % 4U) == 2U)
- {
- data = ((uint16_t)(pBuffer[4U * i]) << 8U) | (uint16_t)pBuffer[(4U * i) + 1U];
- pReg = (__IO uint16_t *)(__IO void *)(&hcrc->Instance->DR); /* Derogation MisraC2012 R.11.5 */
- *pReg = data;
- }
- if ((BufferLength % 4U) == 3U)
- {
- data = ((uint16_t)(pBuffer[4U * i]) << 8U) | (uint16_t)pBuffer[(4U * i) + 1U];
- pReg = (__IO uint16_t *)(__IO void *)(&hcrc->Instance->DR); /* Derogation MisraC2012 R.11.5 */
- *pReg = data;
-
- *(__IO uint8_t *)(__IO void *)(&hcrc->Instance->DR) = pBuffer[(4U * i) + 2U]; /* Derogation MisraC2012 R.11.5 */
- }
- }
-
- /* 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; /* input data buffer index */
- __IO uint16_t *pReg;
-
- /* 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 peripheral */
- for (i = 0U; i < (BufferLength / 2U); i++)
- {
- hcrc->Instance->DR = ((uint32_t)pBuffer[2U * i] << 16U) | (uint32_t)pBuffer[(2U * i) + 1U];
- }
- if ((BufferLength % 2U) != 0U)
- {
- pReg = (__IO uint16_t *)(__IO void *)(&hcrc->Instance->DR); /* Derogation MisraC2012 R.11.5 */
- *pReg = pBuffer[2U * i];
- }
-
- /* Return the CRC computed value */
- return hcrc->Instance->DR;
-}
-
-/**
- * @}
- */
-
-#endif /* HAL_CRC_MODULE_ENABLED */
-/**
- * @}
- */
-
-/**
- * @}
- */
-
-/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+ * @brief Peripheral State functions.
+ *
+@verbatim
+ ===============================================================================
+ ##### Peripheral State functions #####
+ ===============================================================================
+ [..]
+ This subsection permits to get in run-time the status of the peripheral.
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Return the CRC handle state.
+ * @param hcrc CRC handle
+ * @retval HAL state
+ */
+HAL_CRC_StateTypeDef HAL_CRC_GetState(CRC_HandleTypeDef *hcrc)
+{
+ /* Return CRC handle state */
+ return hcrc->State;
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup CRC_Private_Functions
+ * @{
+ */
+
+/**
+ * @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; /* input data buffer index */
+ uint16_t data;
+ __IO uint16_t *pReg;
+
+ /* 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 peripheral */
+ for (i = 0U; i < (BufferLength / 4U); i++)
+ {
+ hcrc->Instance->DR = ((uint32_t)pBuffer[4U * i] << 24U) | \
+ ((uint32_t)pBuffer[(4U * i) + 1U] << 16U) | \
+ ((uint32_t)pBuffer[(4U * i) + 2U] << 8U) | \
+ (uint32_t)pBuffer[(4U * i) + 3U];
+ }
+ /* last bytes specific handling */
+ if ((BufferLength % 4U) != 0U)
+ {
+ if ((BufferLength % 4U) == 1U)
+ {
+ *(__IO uint8_t *)(__IO void *)(&hcrc->Instance->DR) = pBuffer[4U * i]; /* Derogation MisraC2012 R.11.5 */
+ }
+ if ((BufferLength % 4U) == 2U)
+ {
+ data = ((uint16_t)(pBuffer[4U * i]) << 8U) | (uint16_t)pBuffer[(4U * i) + 1U];
+ pReg = (__IO uint16_t *)(__IO void *)(&hcrc->Instance->DR); /* Derogation MisraC2012 R.11.5 */
+ *pReg = data;
+ }
+ if ((BufferLength % 4U) == 3U)
+ {
+ data = ((uint16_t)(pBuffer[4U * i]) << 8U) | (uint16_t)pBuffer[(4U * i) + 1U];
+ pReg = (__IO uint16_t *)(__IO void *)(&hcrc->Instance->DR); /* Derogation MisraC2012 R.11.5 */
+ *pReg = data;
+
+ *(__IO uint8_t *)(__IO void *)(&hcrc->Instance->DR) = pBuffer[(4U * i) + 2U]; /* Derogation MisraC2012 R.11.5 */
+ }
+ }
+
+ /* 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; /* input data buffer index */
+ __IO uint16_t *pReg;
+
+ /* 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 peripheral */
+ for (i = 0U; i < (BufferLength / 2U); i++)
+ {
+ hcrc->Instance->DR = ((uint32_t)pBuffer[2U * i] << 16U) | (uint32_t)pBuffer[(2U * i) + 1U];
+ }
+ if ((BufferLength % 2U) != 0U)
+ {
+ pReg = (__IO uint16_t *)(__IO void *)(&hcrc->Instance->DR); /* Derogation MisraC2012 R.11.5 */
+ *pReg = pBuffer[2U * i];
+ }
+
+ /* Return the CRC computed value */
+ return hcrc->Instance->DR;
+}
+
+/**
+ * @}
+ */
+
+#endif /* HAL_CRC_MODULE_ENABLED */
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */