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Diffstat (limited to 'lib/stm32f1/hal/source/stm32f1xx_hal_crc.c')
| -rw-r--r-- | lib/stm32f1/hal/source/stm32f1xx_hal_crc.c | 330 |
1 files changed, 330 insertions, 0 deletions
diff --git a/lib/stm32f1/hal/source/stm32f1xx_hal_crc.c b/lib/stm32f1/hal/source/stm32f1xx_hal_crc.c new file mode 100644 index 00000000..cbf1d5c3 --- /dev/null +++ b/lib/stm32f1/hal/source/stm32f1xx_hal_crc.c @@ -0,0 +1,330 @@ +/**
+ ******************************************************************************
+ * @file stm32f1xx_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) 2016 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 "stm32f1xx_hal.h"
+
+/** @addtogroup STM32F1xx_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****/
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