331 lines
9.6 KiB
C
331 lines
9.6 KiB
C
|
/**
|
||
|
|
******************************************************************************
|
||
|
|
* @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****/
|