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mbed library sources. Supersedes mbed-src.

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targets/TARGET_STM/TARGET_STM32F2/device/stm32f2xx_hal_crc.c@189:f392fc9709a3, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 22:31:08 2019 +0000
Revision:
189:f392fc9709a3
Parent:
167:e84263d55307 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /**
<> 144:ef7eb2e8f9f7 2 ******************************************************************************
<> 144:ef7eb2e8f9f7 3 * @file stm32f2xx_hal_crc.c
<> 144:ef7eb2e8f9f7 4 * @author MCD Application Team
AnnaBridge 167:e84263d55307 5 * @version V1.2.1
AnnaBridge 167:e84263d55307 6 * @date 14-April-2017
<> 144:ef7eb2e8f9f7 7 * @brief CRC HAL module driver.
<> 144:ef7eb2e8f9f7 8 * This file provides firmware functions to manage the following
<> 144:ef7eb2e8f9f7 9 * functionalities of the Cyclic Redundancy Check (CRC) peripheral:
<> 144:ef7eb2e8f9f7 10 * + Initialization and de-initialization functions
<> 144:ef7eb2e8f9f7 11 * + Peripheral Control functions
<> 144:ef7eb2e8f9f7 12 * + Peripheral State functions
<> 144:ef7eb2e8f9f7 13 *
<> 144:ef7eb2e8f9f7 14 @verbatim
<> 144:ef7eb2e8f9f7 15 ==============================================================================
<> 144:ef7eb2e8f9f7 16 ##### How to use this driver #####
<> 144:ef7eb2e8f9f7 17 ==============================================================================
<> 144:ef7eb2e8f9f7 18 [..]
<> 144:ef7eb2e8f9f7 19 The CRC HAL driver can be used as follows:
<> 144:ef7eb2e8f9f7 20
<> 144:ef7eb2e8f9f7 21 (#) Enable CRC AHB clock using __HAL_RCC_CRC_CLK_ENABLE();
<> 144:ef7eb2e8f9f7 22
<> 144:ef7eb2e8f9f7 23 (#) Use HAL_CRC_Accumulate() function to compute the CRC value of
<> 144:ef7eb2e8f9f7 24 a 32-bit data buffer using combination of the previous CRC value
<> 144:ef7eb2e8f9f7 25 and the new one.
<> 144:ef7eb2e8f9f7 26
<> 144:ef7eb2e8f9f7 27 (#) Use HAL_CRC_Calculate() function to compute the CRC Value of
<> 144:ef7eb2e8f9f7 28 a new 32-bit data buffer. This function resets the CRC computation
<> 144:ef7eb2e8f9f7 29 unit before starting the computation to avoid getting wrong CRC values.
<> 144:ef7eb2e8f9f7 30
<> 144:ef7eb2e8f9f7 31 @endverbatim
<> 144:ef7eb2e8f9f7 32 ******************************************************************************
<> 144:ef7eb2e8f9f7 33 * @attention
<> 144:ef7eb2e8f9f7 34 *
AnnaBridge 167:e84263d55307 35 * <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
<> 144:ef7eb2e8f9f7 36 *
<> 144:ef7eb2e8f9f7 37 * Redistribution and use in source and binary forms, with or without modification,
<> 144:ef7eb2e8f9f7 38 * are permitted provided that the following conditions are met:
<> 144:ef7eb2e8f9f7 39 * 1. Redistributions of source code must retain the above copyright notice,
<> 144:ef7eb2e8f9f7 40 * this list of conditions and the following disclaimer.
<> 144:ef7eb2e8f9f7 41 * 2. Redistributions in binary form must reproduce the above copyright notice,
<> 144:ef7eb2e8f9f7 42 * this list of conditions and the following disclaimer in the documentation
<> 144:ef7eb2e8f9f7 43 * and/or other materials provided with the distribution.
<> 144:ef7eb2e8f9f7 44 * 3. Neither the name of STMicroelectronics nor the names of its contributors
<> 144:ef7eb2e8f9f7 45 * may be used to endorse or promote products derived from this software
<> 144:ef7eb2e8f9f7 46 * without specific prior written permission.
<> 144:ef7eb2e8f9f7 47 *
<> 144:ef7eb2e8f9f7 48 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
<> 144:ef7eb2e8f9f7 49 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
<> 144:ef7eb2e8f9f7 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
<> 144:ef7eb2e8f9f7 51 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
<> 144:ef7eb2e8f9f7 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
<> 144:ef7eb2e8f9f7 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
<> 144:ef7eb2e8f9f7 54 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
<> 144:ef7eb2e8f9f7 55 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
<> 144:ef7eb2e8f9f7 56 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
<> 144:ef7eb2e8f9f7 57 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
<> 144:ef7eb2e8f9f7 58 *
<> 144:ef7eb2e8f9f7 59 ******************************************************************************
<> 144:ef7eb2e8f9f7 60 */
<> 144:ef7eb2e8f9f7 61
<> 144:ef7eb2e8f9f7 62 /* Includes ------------------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 63 #include "stm32f2xx_hal.h"
<> 144:ef7eb2e8f9f7 64
<> 144:ef7eb2e8f9f7 65 /** @addtogroup STM32F2xx_HAL_Driver
<> 144:ef7eb2e8f9f7 66 * @{
<> 144:ef7eb2e8f9f7 67 */
<> 144:ef7eb2e8f9f7 68
<> 144:ef7eb2e8f9f7 69 /** @addtogroup CRC
<> 144:ef7eb2e8f9f7 70 * @{
<> 144:ef7eb2e8f9f7 71 */
<> 144:ef7eb2e8f9f7 72
<> 144:ef7eb2e8f9f7 73 #ifdef HAL_CRC_MODULE_ENABLED
<> 144:ef7eb2e8f9f7 74
<> 144:ef7eb2e8f9f7 75 /* Private typedef -----------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 76 /* Private define ------------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 77 /* Private macro -------------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 78 /* Private variables ---------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 79 /* Private function prototypes -----------------------------------------------*/
<> 144:ef7eb2e8f9f7 80 /* Private functions ---------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 81 /* Exported functions --------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 82
<> 144:ef7eb2e8f9f7 83 /** @addtogroup CRC_Exported_Functions
<> 144:ef7eb2e8f9f7 84 * @{
<> 144:ef7eb2e8f9f7 85 */
<> 144:ef7eb2e8f9f7 86
<> 144:ef7eb2e8f9f7 87 /** @addtogroup CRC_Exported_Functions_Group1
<> 144:ef7eb2e8f9f7 88 * @brief Initialization and de-initialization functions
<> 144:ef7eb2e8f9f7 89 *
<> 144:ef7eb2e8f9f7 90 @verbatim
<> 144:ef7eb2e8f9f7 91 ==============================================================================
<> 144:ef7eb2e8f9f7 92 ##### Initialization and de-initialization functions #####
<> 144:ef7eb2e8f9f7 93 ==============================================================================
<> 144:ef7eb2e8f9f7 94 [..] This section provides functions allowing to:
<> 144:ef7eb2e8f9f7 95 (+) Initialize the CRC according to the specified parameters
<> 144:ef7eb2e8f9f7 96 in the CRC_InitTypeDef and create the associated handle
<> 144:ef7eb2e8f9f7 97 (+) DeInitialize the CRC peripheral
<> 144:ef7eb2e8f9f7 98 (+) Initialize the CRC MSP
<> 144:ef7eb2e8f9f7 99 (+) DeInitialize CRC MSP
<> 144:ef7eb2e8f9f7 100
<> 144:ef7eb2e8f9f7 101 @endverbatim
<> 144:ef7eb2e8f9f7 102 * @{
<> 144:ef7eb2e8f9f7 103 */
<> 144:ef7eb2e8f9f7 104
<> 144:ef7eb2e8f9f7 105 /**
<> 144:ef7eb2e8f9f7 106 * @brief Initializes the CRC according to the specified
<> 144:ef7eb2e8f9f7 107 * parameters in the CRC_InitTypeDef and creates the associated handle.
<> 144:ef7eb2e8f9f7 108 * @param hcrc: pointer to a CRC_HandleTypeDef structure that contains
<> 144:ef7eb2e8f9f7 109 * the configuration information for CRC
<> 144:ef7eb2e8f9f7 110 * @retval HAL status
<> 144:ef7eb2e8f9f7 111 */
<> 144:ef7eb2e8f9f7 112 HAL_StatusTypeDef HAL_CRC_Init(CRC_HandleTypeDef *hcrc)
<> 144:ef7eb2e8f9f7 113 {
<> 144:ef7eb2e8f9f7 114 /* Check the CRC handle allocation */
<> 144:ef7eb2e8f9f7 115 if(hcrc == NULL)
<> 144:ef7eb2e8f9f7 116 {
<> 144:ef7eb2e8f9f7 117 return HAL_ERROR;
<> 144:ef7eb2e8f9f7 118 }
<> 144:ef7eb2e8f9f7 119
<> 144:ef7eb2e8f9f7 120 /* Check the parameters */
<> 144:ef7eb2e8f9f7 121 assert_param(IS_CRC_ALL_INSTANCE(hcrc->Instance));
<> 144:ef7eb2e8f9f7 122
<> 144:ef7eb2e8f9f7 123 if(hcrc->State == HAL_CRC_STATE_RESET)
<> 144:ef7eb2e8f9f7 124 {
<> 144:ef7eb2e8f9f7 125 /* Allocate lock resource and initialize it */
<> 144:ef7eb2e8f9f7 126 hcrc->Lock = HAL_UNLOCKED;
<> 144:ef7eb2e8f9f7 127 /* Init the low level hardware */
<> 144:ef7eb2e8f9f7 128 HAL_CRC_MspInit(hcrc);
<> 144:ef7eb2e8f9f7 129 }
<> 144:ef7eb2e8f9f7 130
<> 144:ef7eb2e8f9f7 131 /* Change CRC peripheral state */
<> 144:ef7eb2e8f9f7 132 hcrc->State = HAL_CRC_STATE_BUSY;
<> 144:ef7eb2e8f9f7 133
<> 144:ef7eb2e8f9f7 134 /* Change CRC peripheral state */
<> 144:ef7eb2e8f9f7 135 hcrc->State = HAL_CRC_STATE_READY;
<> 144:ef7eb2e8f9f7 136
<> 144:ef7eb2e8f9f7 137 /* Return function status */
<> 144:ef7eb2e8f9f7 138 return HAL_OK;
<> 144:ef7eb2e8f9f7 139 }
<> 144:ef7eb2e8f9f7 140
<> 144:ef7eb2e8f9f7 141 /**
<> 144:ef7eb2e8f9f7 142 * @brief DeInitializes the CRC peripheral.
<> 144:ef7eb2e8f9f7 143 * @param hcrc: pointer to a CRC_HandleTypeDef structure that contains
<> 144:ef7eb2e8f9f7 144 * the configuration information for CRC
<> 144:ef7eb2e8f9f7 145 * @retval HAL status
<> 144:ef7eb2e8f9f7 146 */
<> 144:ef7eb2e8f9f7 147 HAL_StatusTypeDef HAL_CRC_DeInit(CRC_HandleTypeDef *hcrc)
<> 144:ef7eb2e8f9f7 148 {
<> 144:ef7eb2e8f9f7 149 /* Check the CRC handle allocation */
<> 144:ef7eb2e8f9f7 150 if(hcrc == NULL)
<> 144:ef7eb2e8f9f7 151 {
<> 144:ef7eb2e8f9f7 152 return HAL_ERROR;
<> 144:ef7eb2e8f9f7 153 }
<> 144:ef7eb2e8f9f7 154
<> 144:ef7eb2e8f9f7 155 /* Check the parameters */
<> 144:ef7eb2e8f9f7 156 assert_param(IS_CRC_ALL_INSTANCE(hcrc->Instance));
<> 144:ef7eb2e8f9f7 157
<> 144:ef7eb2e8f9f7 158 /* Change CRC peripheral state */
<> 144:ef7eb2e8f9f7 159 hcrc->State = HAL_CRC_STATE_BUSY;
<> 144:ef7eb2e8f9f7 160
<> 144:ef7eb2e8f9f7 161 /* Reset IDR register content */
<> 144:ef7eb2e8f9f7 162 CLEAR_BIT(hcrc->Instance->IDR, CRC_IDR_IDR) ;
<> 144:ef7eb2e8f9f7 163
<> 144:ef7eb2e8f9f7 164 /* DeInit the low level hardware */
<> 144:ef7eb2e8f9f7 165 HAL_CRC_MspDeInit(hcrc);
<> 144:ef7eb2e8f9f7 166
<> 144:ef7eb2e8f9f7 167 /* Change CRC peripheral state */
<> 144:ef7eb2e8f9f7 168 hcrc->State = HAL_CRC_STATE_RESET;
<> 144:ef7eb2e8f9f7 169
<> 144:ef7eb2e8f9f7 170 /* Release Lock */
<> 144:ef7eb2e8f9f7 171 __HAL_UNLOCK(hcrc);
<> 144:ef7eb2e8f9f7 172
<> 144:ef7eb2e8f9f7 173 /* Return function status */
<> 144:ef7eb2e8f9f7 174 return HAL_OK;
<> 144:ef7eb2e8f9f7 175 }
<> 144:ef7eb2e8f9f7 176
<> 144:ef7eb2e8f9f7 177 /**
<> 144:ef7eb2e8f9f7 178 * @brief Initializes the CRC MSP.
<> 144:ef7eb2e8f9f7 179 * @param hcrc: pointer to a CRC_HandleTypeDef structure that contains
<> 144:ef7eb2e8f9f7 180 * the configuration information for CRC
<> 144:ef7eb2e8f9f7 181 * @retval None
<> 144:ef7eb2e8f9f7 182 */
<> 144:ef7eb2e8f9f7 183 __weak void HAL_CRC_MspInit(CRC_HandleTypeDef *hcrc)
<> 144:ef7eb2e8f9f7 184 {
<> 144:ef7eb2e8f9f7 185 /* Prevent unused argument(s) compilation warning */
<> 144:ef7eb2e8f9f7 186 UNUSED(hcrc);
<> 144:ef7eb2e8f9f7 187 /* NOTE : This function Should not be modified, when the callback is needed,
<> 144:ef7eb2e8f9f7 188 the HAL_CRC_MspInit could be implemented in the user file
<> 144:ef7eb2e8f9f7 189 */
<> 144:ef7eb2e8f9f7 190 }
<> 144:ef7eb2e8f9f7 191
<> 144:ef7eb2e8f9f7 192 /**
<> 144:ef7eb2e8f9f7 193 * @brief DeInitializes the CRC MSP.
<> 144:ef7eb2e8f9f7 194 * @param hcrc: pointer to a CRC_HandleTypeDef structure that contains
<> 144:ef7eb2e8f9f7 195 * the configuration information for CRC
<> 144:ef7eb2e8f9f7 196 * @retval None
<> 144:ef7eb2e8f9f7 197 */
<> 144:ef7eb2e8f9f7 198 __weak void HAL_CRC_MspDeInit(CRC_HandleTypeDef *hcrc)
<> 144:ef7eb2e8f9f7 199 {
<> 144:ef7eb2e8f9f7 200 /* Prevent unused argument(s) compilation warning */
<> 144:ef7eb2e8f9f7 201 UNUSED(hcrc);
<> 144:ef7eb2e8f9f7 202 /* NOTE : This function Should not be modified, when the callback is needed,
<> 144:ef7eb2e8f9f7 203 the HAL_CRC_MspDeInit could be implemented in the user file
<> 144:ef7eb2e8f9f7 204 */
<> 144:ef7eb2e8f9f7 205 }
<> 144:ef7eb2e8f9f7 206
<> 144:ef7eb2e8f9f7 207 /**
<> 144:ef7eb2e8f9f7 208 * @}
<> 144:ef7eb2e8f9f7 209 */
<> 144:ef7eb2e8f9f7 210
<> 144:ef7eb2e8f9f7 211 /** @addtogroup CRC_Exported_Functions_Group2
<> 144:ef7eb2e8f9f7 212 * @brief Peripheral Control functions
<> 144:ef7eb2e8f9f7 213 *
<> 144:ef7eb2e8f9f7 214 @verbatim
<> 144:ef7eb2e8f9f7 215 ==============================================================================
<> 144:ef7eb2e8f9f7 216 ##### Peripheral Control functions #####
<> 144:ef7eb2e8f9f7 217 ==============================================================================
<> 144:ef7eb2e8f9f7 218 [..] This section provides functions allowing to:
<> 144:ef7eb2e8f9f7 219 (+) Compute the 32-bit CRC value of 32-bit data buffer,
<> 144:ef7eb2e8f9f7 220 using combination of the previous CRC value and the new one.
<> 144:ef7eb2e8f9f7 221 (+) Compute the 32-bit CRC value of 32-bit data buffer,
<> 144:ef7eb2e8f9f7 222 independently of the previous CRC value.
<> 144:ef7eb2e8f9f7 223
<> 144:ef7eb2e8f9f7 224 @endverbatim
<> 144:ef7eb2e8f9f7 225 * @{
<> 144:ef7eb2e8f9f7 226 */
<> 144:ef7eb2e8f9f7 227
<> 144:ef7eb2e8f9f7 228 /**
<> 144:ef7eb2e8f9f7 229 * @brief Computes the 32-bit CRC of 32-bit data buffer using combination
<> 144:ef7eb2e8f9f7 230 * of the previous CRC value and the new one.
<> 144:ef7eb2e8f9f7 231 * @param hcrc: pointer to a CRC_HandleTypeDef structure that contains
<> 144:ef7eb2e8f9f7 232 * the configuration information for CRC
<> 144:ef7eb2e8f9f7 233 * @param pBuffer: pointer to the buffer containing the data to be computed
<> 144:ef7eb2e8f9f7 234 * @param BufferLength: length of the buffer to be computed
<> 144:ef7eb2e8f9f7 235 * @retval 32-bit CRC
<> 144:ef7eb2e8f9f7 236 */
<> 144:ef7eb2e8f9f7 237 uint32_t HAL_CRC_Accumulate(CRC_HandleTypeDef *hcrc, uint32_t pBuffer[], uint32_t BufferLength)
<> 144:ef7eb2e8f9f7 238 {
<> 144:ef7eb2e8f9f7 239 uint32_t index = 0U;
<> 144:ef7eb2e8f9f7 240
<> 144:ef7eb2e8f9f7 241 /* Process Locked */
<> 144:ef7eb2e8f9f7 242 __HAL_LOCK(hcrc);
<> 144:ef7eb2e8f9f7 243
<> 144:ef7eb2e8f9f7 244 /* Change CRC peripheral state */
<> 144:ef7eb2e8f9f7 245 hcrc->State = HAL_CRC_STATE_BUSY;
<> 144:ef7eb2e8f9f7 246
<> 144:ef7eb2e8f9f7 247 /* Enter Data to the CRC calculator */
<> 144:ef7eb2e8f9f7 248 for(index = 0U; index < BufferLength; index++)
<> 144:ef7eb2e8f9f7 249 {
<> 144:ef7eb2e8f9f7 250 hcrc->Instance->DR = pBuffer[index];
<> 144:ef7eb2e8f9f7 251 }
<> 144:ef7eb2e8f9f7 252
<> 144:ef7eb2e8f9f7 253 /* Change CRC peripheral state */
<> 144:ef7eb2e8f9f7 254 hcrc->State = HAL_CRC_STATE_READY;
<> 144:ef7eb2e8f9f7 255
<> 144:ef7eb2e8f9f7 256 /* Process Unlocked */
<> 144:ef7eb2e8f9f7 257 __HAL_UNLOCK(hcrc);
<> 144:ef7eb2e8f9f7 258
<> 144:ef7eb2e8f9f7 259 /* Return the CRC computed value */
<> 144:ef7eb2e8f9f7 260 return hcrc->Instance->DR;
<> 144:ef7eb2e8f9f7 261 }
<> 144:ef7eb2e8f9f7 262
<> 144:ef7eb2e8f9f7 263 /**
<> 144:ef7eb2e8f9f7 264 * @brief Computes the 32-bit CRC of 32-bit data buffer independently
<> 144:ef7eb2e8f9f7 265 * of the previous CRC value.
<> 144:ef7eb2e8f9f7 266 * @param hcrc: pointer to a CRC_HandleTypeDef structure that contains
<> 144:ef7eb2e8f9f7 267 * the configuration information for CRC
<> 144:ef7eb2e8f9f7 268 * @param pBuffer: Pointer to the buffer containing the data to be computed
<> 144:ef7eb2e8f9f7 269 * @param BufferLength: Length of the buffer to be computed
<> 144:ef7eb2e8f9f7 270 * @retval 32-bit CRC
<> 144:ef7eb2e8f9f7 271 */
<> 144:ef7eb2e8f9f7 272 uint32_t HAL_CRC_Calculate(CRC_HandleTypeDef *hcrc, uint32_t pBuffer[], uint32_t BufferLength)
<> 144:ef7eb2e8f9f7 273 {
<> 144:ef7eb2e8f9f7 274 uint32_t index = 0U;
<> 144:ef7eb2e8f9f7 275
<> 144:ef7eb2e8f9f7 276 /* Process Locked */
<> 144:ef7eb2e8f9f7 277 __HAL_LOCK(hcrc);
<> 144:ef7eb2e8f9f7 278
<> 144:ef7eb2e8f9f7 279 /* Change CRC peripheral state */
<> 144:ef7eb2e8f9f7 280 hcrc->State = HAL_CRC_STATE_BUSY;
<> 144:ef7eb2e8f9f7 281
<> 144:ef7eb2e8f9f7 282 /* Reset CRC Calculation Unit */
<> 144:ef7eb2e8f9f7 283 __HAL_CRC_DR_RESET(hcrc);
<> 144:ef7eb2e8f9f7 284
<> 144:ef7eb2e8f9f7 285 /* Enter Data to the CRC calculator */
<> 144:ef7eb2e8f9f7 286 for(index = 0U; index < BufferLength; index++)
<> 144:ef7eb2e8f9f7 287 {
<> 144:ef7eb2e8f9f7 288 hcrc->Instance->DR = pBuffer[index];
<> 144:ef7eb2e8f9f7 289 }
<> 144:ef7eb2e8f9f7 290
<> 144:ef7eb2e8f9f7 291 /* Change CRC peripheral state */
<> 144:ef7eb2e8f9f7 292 hcrc->State = HAL_CRC_STATE_READY;
<> 144:ef7eb2e8f9f7 293
<> 144:ef7eb2e8f9f7 294 /* Process Unlocked */
<> 144:ef7eb2e8f9f7 295 __HAL_UNLOCK(hcrc);
<> 144:ef7eb2e8f9f7 296
<> 144:ef7eb2e8f9f7 297 /* Return the CRC computed value */
<> 144:ef7eb2e8f9f7 298 return hcrc->Instance->DR;
<> 144:ef7eb2e8f9f7 299 }
<> 144:ef7eb2e8f9f7 300
<> 144:ef7eb2e8f9f7 301 /**
<> 144:ef7eb2e8f9f7 302 * @}
<> 144:ef7eb2e8f9f7 303 */
<> 144:ef7eb2e8f9f7 304
<> 144:ef7eb2e8f9f7 305
<> 144:ef7eb2e8f9f7 306 /** @addtogroup CRC_Exported_Functions_Group3
<> 144:ef7eb2e8f9f7 307 * @brief Peripheral State functions
<> 144:ef7eb2e8f9f7 308 *
<> 144:ef7eb2e8f9f7 309 @verbatim
<> 144:ef7eb2e8f9f7 310 ==============================================================================
<> 144:ef7eb2e8f9f7 311 ##### Peripheral State functions #####
<> 144:ef7eb2e8f9f7 312 ==============================================================================
<> 144:ef7eb2e8f9f7 313 [..]
<> 144:ef7eb2e8f9f7 314 This subsection permits to get in run-time the status of the peripheral
<> 144:ef7eb2e8f9f7 315 and the data flow.
<> 144:ef7eb2e8f9f7 316
<> 144:ef7eb2e8f9f7 317 @endverbatim
<> 144:ef7eb2e8f9f7 318 * @{
<> 144:ef7eb2e8f9f7 319 */
<> 144:ef7eb2e8f9f7 320
<> 144:ef7eb2e8f9f7 321 /**
<> 144:ef7eb2e8f9f7 322 * @brief Returns the CRC state.
<> 144:ef7eb2e8f9f7 323 * @param hcrc: pointer to a CRC_HandleTypeDef structure that contains
<> 144:ef7eb2e8f9f7 324 * the configuration information for CRC
<> 144:ef7eb2e8f9f7 325 * @retval HAL state
<> 144:ef7eb2e8f9f7 326 */
<> 144:ef7eb2e8f9f7 327 HAL_CRC_StateTypeDef HAL_CRC_GetState(CRC_HandleTypeDef *hcrc)
<> 144:ef7eb2e8f9f7 328 {
<> 144:ef7eb2e8f9f7 329 return hcrc->State;
<> 144:ef7eb2e8f9f7 330 }
<> 144:ef7eb2e8f9f7 331
<> 144:ef7eb2e8f9f7 332 /**
<> 144:ef7eb2e8f9f7 333 * @}
<> 144:ef7eb2e8f9f7 334 */
<> 144:ef7eb2e8f9f7 335
<> 144:ef7eb2e8f9f7 336 /**
<> 144:ef7eb2e8f9f7 337 * @}
<> 144:ef7eb2e8f9f7 338 */
<> 144:ef7eb2e8f9f7 339
<> 144:ef7eb2e8f9f7 340 #endif /* HAL_CRC_MODULE_ENABLED */
<> 144:ef7eb2e8f9f7 341 /**
<> 144:ef7eb2e8f9f7 342 * @}
<> 144:ef7eb2e8f9f7 343 */
<> 144:ef7eb2e8f9f7 344
<> 144:ef7eb2e8f9f7 345 /**
<> 144:ef7eb2e8f9f7 346 * @}
<> 144:ef7eb2e8f9f7 347 */
<> 144:ef7eb2e8f9f7 348
<> 144:ef7eb2e8f9f7 349 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/