|
|
@@ -0,0 +1,330 @@
|
|
|
+/**
|
|
|
+ ******************************************************************************
|
|
|
+ * @file stm32l1xx_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>© 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 "stm32l1xx_hal.h"
|
|
|
+
|
|
|
+/** @addtogroup STM32L1xx_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 -----------------------------------------------*/
|
|
|
+
|
|
|
+/* Exported functions --------------------------------------------------------*/
|
|
|
+
|
|
|
+/** @defgroup CRC_Exported_Functions CRC Exported Functions
|
|
|
+ * @{
|
|
|
+ */
|
|
|
+
|
|
|
+/** @defgroup CRC_Exported_Functions_Group1 Initialization and 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 (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);
|
|
|
+ }
|
|
|
+
|
|
|
+ /* 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 management functions.
|
|
|
+ *
|
|
|
+@verbatim
|
|
|
+ ===============================================================================
|
|
|
+ ##### Peripheral Control functions #####
|
|
|
+ ===============================================================================
|
|
|
+ [..] This section provides functions allowing to:
|
|
|
+ (+) compute the 32-bit CRC value of a 32-bit data buffer
|
|
|
+ using combination of the previous CRC value and the new one.
|
|
|
+
|
|
|
+ [..] or
|
|
|
+
|
|
|
+ (+) compute the 32-bit CRC value of a 32-bit data buffer
|
|
|
+ independently of the previous CRC value.
|
|
|
+
|
|
|
+@endverbatim
|
|
|
+ * @{
|
|
|
+ */
|
|
|
+
|
|
|
+/**
|
|
|
+ * @brief Compute the 32-bit CRC value of a 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.
|
|
|
+ * @param BufferLength input data buffer length (number of uint32_t words).
|
|
|
+ * @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;
|
|
|
+
|
|
|
+ /* Enter Data to the CRC calculator */
|
|
|
+ for (index = 0U; index < BufferLength; index++)
|
|
|
+ {
|
|
|
+ hcrc->Instance->DR = pBuffer[index];
|
|
|
+ }
|
|
|
+ temp = hcrc->Instance->DR;
|
|
|
+
|
|
|
+ /* Change CRC peripheral state */
|
|
|
+ hcrc->State = HAL_CRC_STATE_READY;
|
|
|
+
|
|
|
+ /* Return the CRC computed value */
|
|
|
+ return temp;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * @brief Compute the 32-bit CRC value of a 32-bit data buffer
|
|
|
+ * starting with hcrc->Instance->INIT as initialization value.
|
|
|
+ * @param hcrc CRC handle
|
|
|
+ * @param pBuffer pointer to the input data buffer.
|
|
|
+ * @param BufferLength input data buffer length (number of uint32_t words).
|
|
|
+ * @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);
|
|
|
+
|
|
|
+ /* Enter 32-bit input data to the CRC calculator */
|
|
|
+ for (index = 0U; index < BufferLength; index++)
|
|
|
+ {
|
|
|
+ hcrc->Instance->DR = pBuffer[index];
|
|
|
+ }
|
|
|
+ temp = hcrc->Instance->DR;
|
|
|
+
|
|
|
+ /* 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 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;
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * @}
|
|
|
+ */
|
|
|
+
|
|
|
+/**
|
|
|
+ * @}
|
|
|
+ */
|
|
|
+
|
|
|
+
|
|
|
+#endif /* HAL_CRC_MODULE_ENABLED */
|
|
|
+/**
|
|
|
+ * @}
|
|
|
+ */
|
|
|
+
|
|
|
+/**
|
|
|
+ * @}
|
|
|
+ */
|
|
|
+
|
|
|
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|
Nagaev Aleksandr