en 129 / mbed-dev

fix LPC812 PWM

Dependents:   IR_LED_Send

Fork of mbed-dev by mbed official

targets/cmsis/TARGET_STM/TARGET_STM32F0/stm32f0xx_hal_crc.c@129:2e517c56bcfb, 2016-05-16 (annotated)

Committer:
nameless129
Date:
Mon May 16 16:50:30 2016 +0000
Revision:
129:2e517c56bcfb
Parent:
0:9b334a45a8ff 
PWM Fix:Duty 0%??H???????????????

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /**
bogdanm 0:9b334a45a8ff 2 ******************************************************************************
bogdanm 0:9b334a45a8ff 3 * @file stm32f0xx_hal_crc.c
bogdanm 0:9b334a45a8ff 4 * @author MCD Application Team
bogdanm 0:9b334a45a8ff 5 * @version V1.3.0
bogdanm 0:9b334a45a8ff 6 * @date 26-June-2015
bogdanm 0:9b334a45a8ff 7 * @brief CRC HAL module driver.
bogdanm 0:9b334a45a8ff 8 * This file provides firmware functions to manage the following
bogdanm 0:9b334a45a8ff 9 * functionalities of the Cyclic Redundancy Check (CRC) peripheral:
bogdanm 0:9b334a45a8ff 10 * + Initialization and de-initialization functions
bogdanm 0:9b334a45a8ff 11 * + Peripheral Control functions
bogdanm 0:9b334a45a8ff 12 * + Peripheral State functions
bogdanm 0:9b334a45a8ff 13 *
bogdanm 0:9b334a45a8ff 14 @verbatim
bogdanm 0:9b334a45a8ff 15 ===============================================================================
bogdanm 0:9b334a45a8ff 16 ##### How to use this driver #####
bogdanm 0:9b334a45a8ff 17 ===============================================================================
bogdanm 0:9b334a45a8ff 18 [..]
bogdanm 0:9b334a45a8ff 19 (#) Enable CRC AHB clock using __HAL_RCC_CRC_CLK_ENABLE();
bogdanm 0:9b334a45a8ff 20 (#) Initialize CRC calculator
bogdanm 0:9b334a45a8ff 21 (++)specify generating polynomial (IP default or non-default one)
bogdanm 0:9b334a45a8ff 22 (++)specify initialization value (IP default or non-default one)
bogdanm 0:9b334a45a8ff 23 (++)specify input data format
bogdanm 0:9b334a45a8ff 24 (++)specify input or output data inversion mode if any
bogdanm 0:9b334a45a8ff 25 (#) Use HAL_CRC_Accumulate() function to compute the CRC value of the
bogdanm 0:9b334a45a8ff 26 input data buffer starting with the previously computed CRC as
bogdanm 0:9b334a45a8ff 27 initialization value
bogdanm 0:9b334a45a8ff 28 (#) Use HAL_CRC_Calculate() function to compute the CRC value of the
bogdanm 0:9b334a45a8ff 29 input data buffer starting with the defined initialization value
bogdanm 0:9b334a45a8ff 30 (default or non-default) to initiate CRC calculation
bogdanm 0:9b334a45a8ff 31
bogdanm 0:9b334a45a8ff 32 @endverbatim
bogdanm 0:9b334a45a8ff 33 ******************************************************************************
bogdanm 0:9b334a45a8ff 34 * @attention
bogdanm 0:9b334a45a8ff 35 *
bogdanm 0:9b334a45a8ff 36 * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
bogdanm 0:9b334a45a8ff 37 *
bogdanm 0:9b334a45a8ff 38 * Redistribution and use in source and binary forms, with or without modification,
bogdanm 0:9b334a45a8ff 39 * are permitted provided that the following conditions are met:
bogdanm 0:9b334a45a8ff 40 * 1. Redistributions of source code must retain the above copyright notice,
bogdanm 0:9b334a45a8ff 41 * this list of conditions and the following disclaimer.
bogdanm 0:9b334a45a8ff 42 * 2. Redistributions in binary form must reproduce the above copyright notice,
bogdanm 0:9b334a45a8ff 43 * this list of conditions and the following disclaimer in the documentation
bogdanm 0:9b334a45a8ff 44 * and/or other materials provided with the distribution.
bogdanm 0:9b334a45a8ff 45 * 3. Neither the name of STMicroelectronics nor the names of its contributors
bogdanm 0:9b334a45a8ff 46 * may be used to endorse or promote products derived from this software
bogdanm 0:9b334a45a8ff 47 * without specific prior written permission.
bogdanm 0:9b334a45a8ff 48 *
bogdanm 0:9b334a45a8ff 49 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
bogdanm 0:9b334a45a8ff 50 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
bogdanm 0:9b334a45a8ff 51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
bogdanm 0:9b334a45a8ff 52 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
bogdanm 0:9b334a45a8ff 53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
bogdanm 0:9b334a45a8ff 54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
bogdanm 0:9b334a45a8ff 55 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
bogdanm 0:9b334a45a8ff 56 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
bogdanm 0:9b334a45a8ff 57 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
bogdanm 0:9b334a45a8ff 58 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
bogdanm 0:9b334a45a8ff 59 *
bogdanm 0:9b334a45a8ff 60 ******************************************************************************
bogdanm 0:9b334a45a8ff 61 */
bogdanm 0:9b334a45a8ff 62
bogdanm 0:9b334a45a8ff 63 /* Includes ------------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 64 #include "stm32f0xx_hal.h"
bogdanm 0:9b334a45a8ff 65
bogdanm 0:9b334a45a8ff 66 /** @addtogroup STM32F0xx_HAL_Driver
bogdanm 0:9b334a45a8ff 67 * @{
bogdanm 0:9b334a45a8ff 68 */
bogdanm 0:9b334a45a8ff 69
bogdanm 0:9b334a45a8ff 70 /** @defgroup CRC CRC
bogdanm 0:9b334a45a8ff 71 * @brief CRC HAL module driver.
bogdanm 0:9b334a45a8ff 72 * @{
bogdanm 0:9b334a45a8ff 73 */
bogdanm 0:9b334a45a8ff 74
bogdanm 0:9b334a45a8ff 75 #ifdef HAL_CRC_MODULE_ENABLED
bogdanm 0:9b334a45a8ff 76
bogdanm 0:9b334a45a8ff 77 /* Private typedef -----------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 78 /* Private define ------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 79 /* Private macro -------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 80 /* Private variables ---------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 81 /* Private function prototypes -----------------------------------------------*/
bogdanm 0:9b334a45a8ff 82 /** @defgroup CRC_Private_Functions CRC Private Functions
bogdanm 0:9b334a45a8ff 83 * @{
bogdanm 0:9b334a45a8ff 84 */
bogdanm 0:9b334a45a8ff 85 static uint32_t CRC_Handle_8(CRC_HandleTypeDef *hcrc, uint8_t pBuffer[], uint32_t BufferLength);
bogdanm 0:9b334a45a8ff 86 static uint32_t CRC_Handle_16(CRC_HandleTypeDef *hcrc, uint16_t pBuffer[], uint32_t BufferLength);
bogdanm 0:9b334a45a8ff 87 /**
bogdanm 0:9b334a45a8ff 88 * @}
bogdanm 0:9b334a45a8ff 89 */
bogdanm 0:9b334a45a8ff 90
bogdanm 0:9b334a45a8ff 91 /* Exported functions ---------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 92 /** @defgroup CRC_Exported_Functions CRC Exported Functions
bogdanm 0:9b334a45a8ff 93 * @{
bogdanm 0:9b334a45a8ff 94 */
bogdanm 0:9b334a45a8ff 95
bogdanm 0:9b334a45a8ff 96 /** @defgroup CRC_Exported_Functions_Group1 Initialization/de-initialization functions
bogdanm 0:9b334a45a8ff 97 * @brief Initialization and Configuration functions.
bogdanm 0:9b334a45a8ff 98 *
bogdanm 0:9b334a45a8ff 99 @verbatim
bogdanm 0:9b334a45a8ff 100 ===============================================================================
bogdanm 0:9b334a45a8ff 101 ##### Initialization and Configuration functions #####
bogdanm 0:9b334a45a8ff 102 ===============================================================================
bogdanm 0:9b334a45a8ff 103 [..] This section provides functions allowing to:
bogdanm 0:9b334a45a8ff 104 (+) Initialize the CRC according to the specified parameters
bogdanm 0:9b334a45a8ff 105 in the CRC_InitTypeDef and create the associated handle
bogdanm 0:9b334a45a8ff 106 (+) DeInitialize the CRC peripheral
bogdanm 0:9b334a45a8ff 107 (+) Initialize the CRC MSP
bogdanm 0:9b334a45a8ff 108 (+) DeInitialize CRC MSP
bogdanm 0:9b334a45a8ff 109
bogdanm 0:9b334a45a8ff 110 @endverbatim
bogdanm 0:9b334a45a8ff 111 * @{
bogdanm 0:9b334a45a8ff 112 */
bogdanm 0:9b334a45a8ff 113
bogdanm 0:9b334a45a8ff 114 /**
bogdanm 0:9b334a45a8ff 115 * @brief Initializes the CRC according to the specified
bogdanm 0:9b334a45a8ff 116 * parameters in the CRC_InitTypeDef and creates the associated handle.
bogdanm 0:9b334a45a8ff 117 * @param hcrc: CRC handle
bogdanm 0:9b334a45a8ff 118 * @retval HAL status
bogdanm 0:9b334a45a8ff 119 */
bogdanm 0:9b334a45a8ff 120 HAL_StatusTypeDef HAL_CRC_Init(CRC_HandleTypeDef *hcrc)
bogdanm 0:9b334a45a8ff 121 {
bogdanm 0:9b334a45a8ff 122 /* Check the CRC handle allocation */
bogdanm 0:9b334a45a8ff 123 if(hcrc == NULL)
bogdanm 0:9b334a45a8ff 124 {
bogdanm 0:9b334a45a8ff 125 return HAL_ERROR;
bogdanm 0:9b334a45a8ff 126 }
bogdanm 0:9b334a45a8ff 127
bogdanm 0:9b334a45a8ff 128 /* Check the parameters */
bogdanm 0:9b334a45a8ff 129 assert_param(IS_CRC_ALL_INSTANCE(hcrc->Instance));
bogdanm 0:9b334a45a8ff 130
bogdanm 0:9b334a45a8ff 131 if(hcrc->State == HAL_CRC_STATE_RESET)
bogdanm 0:9b334a45a8ff 132 {
bogdanm 0:9b334a45a8ff 133 /* Allocate lock resource and initialize it */
bogdanm 0:9b334a45a8ff 134 hcrc->Lock = HAL_UNLOCKED;
bogdanm 0:9b334a45a8ff 135 /* Init the low level hardware */
bogdanm 0:9b334a45a8ff 136 HAL_CRC_MspInit(hcrc);
bogdanm 0:9b334a45a8ff 137 }
bogdanm 0:9b334a45a8ff 138
bogdanm 0:9b334a45a8ff 139 hcrc->State = HAL_CRC_STATE_BUSY;
bogdanm 0:9b334a45a8ff 140
bogdanm 0:9b334a45a8ff 141 /* Extended initialization: if programmable polynomial feature is
bogdanm 0:9b334a45a8ff 142 applicable to device, set default or non-default generating
bogdanm 0:9b334a45a8ff 143 polynomial according to hcrc->Init parameters.
bogdanm 0:9b334a45a8ff 144 If feature is non-applicable to device in use, HAL_CRCEx_Init straight
bogdanm 0:9b334a45a8ff 145 away reports HAL_OK. */
bogdanm 0:9b334a45a8ff 146 if (HAL_CRCEx_Init(hcrc) != HAL_OK)
bogdanm 0:9b334a45a8ff 147 {
bogdanm 0:9b334a45a8ff 148 return HAL_ERROR;
bogdanm 0:9b334a45a8ff 149 }
bogdanm 0:9b334a45a8ff 150
bogdanm 0:9b334a45a8ff 151 /* check whether or not non-default CRC initial value has been
bogdanm 0:9b334a45a8ff 152 * picked up by user */
bogdanm 0:9b334a45a8ff 153 assert_param(IS_DEFAULT_INIT_VALUE(hcrc->Init.DefaultInitValueUse));
bogdanm 0:9b334a45a8ff 154 if (hcrc->Init.DefaultInitValueUse == DEFAULT_INIT_VALUE_ENABLE)
bogdanm 0:9b334a45a8ff 155 {
bogdanm 0:9b334a45a8ff 156 WRITE_REG(hcrc->Instance->INIT, DEFAULT_CRC_INITVALUE);
bogdanm 0:9b334a45a8ff 157 }
bogdanm 0:9b334a45a8ff 158 else
bogdanm 0:9b334a45a8ff 159 {
bogdanm 0:9b334a45a8ff 160 WRITE_REG(hcrc->Instance->INIT, hcrc->Init.InitValue);
bogdanm 0:9b334a45a8ff 161 }
bogdanm 0:9b334a45a8ff 162
bogdanm 0:9b334a45a8ff 163
bogdanm 0:9b334a45a8ff 164 /* set input data inversion mode */
bogdanm 0:9b334a45a8ff 165 assert_param(IS_CRC_INPUTDATA_INVERSION_MODE(hcrc->Init.InputDataInversionMode));
bogdanm 0:9b334a45a8ff 166 MODIFY_REG(hcrc->Instance->CR, CRC_CR_REV_IN, hcrc->Init.InputDataInversionMode);
bogdanm 0:9b334a45a8ff 167
bogdanm 0:9b334a45a8ff 168 /* set output data inversion mode */
bogdanm 0:9b334a45a8ff 169 assert_param(IS_CRC_OUTPUTDATA_INVERSION_MODE(hcrc->Init.OutputDataInversionMode));
bogdanm 0:9b334a45a8ff 170 MODIFY_REG(hcrc->Instance->CR, CRC_CR_REV_OUT, hcrc->Init.OutputDataInversionMode);
bogdanm 0:9b334a45a8ff 171
bogdanm 0:9b334a45a8ff 172 /* makes sure the input data format (bytes, halfwords or words stream)
bogdanm 0:9b334a45a8ff 173 * is properly specified by user */
bogdanm 0:9b334a45a8ff 174 assert_param(IS_CRC_INPUTDATA_FORMAT(hcrc->InputDataFormat));
bogdanm 0:9b334a45a8ff 175
bogdanm 0:9b334a45a8ff 176 /* Change CRC peripheral state */
bogdanm 0:9b334a45a8ff 177 hcrc->State = HAL_CRC_STATE_READY;
bogdanm 0:9b334a45a8ff 178
bogdanm 0:9b334a45a8ff 179 /* Return function status */
bogdanm 0:9b334a45a8ff 180 return HAL_OK;
bogdanm 0:9b334a45a8ff 181 }
bogdanm 0:9b334a45a8ff 182
bogdanm 0:9b334a45a8ff 183 /**
bogdanm 0:9b334a45a8ff 184 * @brief DeInitializes the CRC peripheral.
bogdanm 0:9b334a45a8ff 185 * @param hcrc: CRC handle
bogdanm 0:9b334a45a8ff 186 * @retval HAL status
bogdanm 0:9b334a45a8ff 187 */
bogdanm 0:9b334a45a8ff 188 HAL_StatusTypeDef HAL_CRC_DeInit(CRC_HandleTypeDef *hcrc)
bogdanm 0:9b334a45a8ff 189 {
bogdanm 0:9b334a45a8ff 190 /* Check the CRC handle allocation */
bogdanm 0:9b334a45a8ff 191 if(hcrc == NULL)
bogdanm 0:9b334a45a8ff 192 {
bogdanm 0:9b334a45a8ff 193 return HAL_ERROR;
bogdanm 0:9b334a45a8ff 194 }
bogdanm 0:9b334a45a8ff 195
bogdanm 0:9b334a45a8ff 196 /* Check the parameters */
bogdanm 0:9b334a45a8ff 197 assert_param(IS_CRC_ALL_INSTANCE(hcrc->Instance));
bogdanm 0:9b334a45a8ff 198
bogdanm 0:9b334a45a8ff 199 /* Check the CRC peripheral state */
bogdanm 0:9b334a45a8ff 200 if(hcrc->State == HAL_CRC_STATE_BUSY)
bogdanm 0:9b334a45a8ff 201 {
bogdanm 0:9b334a45a8ff 202 return HAL_BUSY;
bogdanm 0:9b334a45a8ff 203 }
bogdanm 0:9b334a45a8ff 204
bogdanm 0:9b334a45a8ff 205 /* Change CRC peripheral state */
bogdanm 0:9b334a45a8ff 206 hcrc->State = HAL_CRC_STATE_BUSY;
bogdanm 0:9b334a45a8ff 207
bogdanm 0:9b334a45a8ff 208 /* DeInit the low level hardware */
bogdanm 0:9b334a45a8ff 209 HAL_CRC_MspDeInit(hcrc);
bogdanm 0:9b334a45a8ff 210
bogdanm 0:9b334a45a8ff 211 /* Change CRC peripheral state */
bogdanm 0:9b334a45a8ff 212 hcrc->State = HAL_CRC_STATE_RESET;
bogdanm 0:9b334a45a8ff 213
bogdanm 0:9b334a45a8ff 214 /* Process unlocked */
bogdanm 0:9b334a45a8ff 215 __HAL_UNLOCK(hcrc);
bogdanm 0:9b334a45a8ff 216
bogdanm 0:9b334a45a8ff 217 /* Return function status */
bogdanm 0:9b334a45a8ff 218 return HAL_OK;
bogdanm 0:9b334a45a8ff 219 }
bogdanm 0:9b334a45a8ff 220
bogdanm 0:9b334a45a8ff 221 /**
bogdanm 0:9b334a45a8ff 222 * @brief Initializes the CRC MSP.
bogdanm 0:9b334a45a8ff 223 * @param hcrc: CRC handle
bogdanm 0:9b334a45a8ff 224 * @retval None
bogdanm 0:9b334a45a8ff 225 */
bogdanm 0:9b334a45a8ff 226 __weak void HAL_CRC_MspInit(CRC_HandleTypeDef *hcrc)
bogdanm 0:9b334a45a8ff 227 {
bogdanm 0:9b334a45a8ff 228 /* NOTE : This function should not be modified, when the callback is needed,
bogdanm 0:9b334a45a8ff 229 the HAL_CRC_MspInit can be implemented in the user file
bogdanm 0:9b334a45a8ff 230 */
bogdanm 0:9b334a45a8ff 231 }
bogdanm 0:9b334a45a8ff 232
bogdanm 0:9b334a45a8ff 233 /**
bogdanm 0:9b334a45a8ff 234 * @brief DeInitializes the CRC MSP.
bogdanm 0:9b334a45a8ff 235 * @param hcrc: CRC handle
bogdanm 0:9b334a45a8ff 236 * @retval None
bogdanm 0:9b334a45a8ff 237 */
bogdanm 0:9b334a45a8ff 238 __weak void HAL_CRC_MspDeInit(CRC_HandleTypeDef *hcrc)
bogdanm 0:9b334a45a8ff 239 {
bogdanm 0:9b334a45a8ff 240 /* NOTE : This function should not be modified, when the callback is needed,
bogdanm 0:9b334a45a8ff 241 the HAL_CRC_MspDeInit can be implemented in the user file
bogdanm 0:9b334a45a8ff 242 */
bogdanm 0:9b334a45a8ff 243 }
bogdanm 0:9b334a45a8ff 244
bogdanm 0:9b334a45a8ff 245 /**
bogdanm 0:9b334a45a8ff 246 * @}
bogdanm 0:9b334a45a8ff 247 */
bogdanm 0:9b334a45a8ff 248
bogdanm 0:9b334a45a8ff 249 /** @defgroup CRC_Exported_Functions_Group2 Peripheral Control functions
bogdanm 0:9b334a45a8ff 250 * @brief management functions.
bogdanm 0:9b334a45a8ff 251 *
bogdanm 0:9b334a45a8ff 252 @verbatim
bogdanm 0:9b334a45a8ff 253 ===============================================================================
bogdanm 0:9b334a45a8ff 254 ##### Peripheral Control functions #####
bogdanm 0:9b334a45a8ff 255 ===============================================================================
bogdanm 0:9b334a45a8ff 256 [..] This section provides functions allowing to:
bogdanm 0:9b334a45a8ff 257 (+) Compute the 7, 8, 16 or 32-bit CRC value of an 8, 16 or 32-bit data buffer
bogdanm 0:9b334a45a8ff 258 using combination of the previous CRC value and the new one.
bogdanm 0:9b334a45a8ff 259
bogdanm 0:9b334a45a8ff 260 or
bogdanm 0:9b334a45a8ff 261
bogdanm 0:9b334a45a8ff 262 (+) Compute the 7, 8, 16 or 32-bit CRC value of an 8, 16 or 32-bit data buffer
bogdanm 0:9b334a45a8ff 263 independently of the previous CRC value.
bogdanm 0:9b334a45a8ff 264
bogdanm 0:9b334a45a8ff 265 @endverbatim
bogdanm 0:9b334a45a8ff 266 * @{
bogdanm 0:9b334a45a8ff 267 */
bogdanm 0:9b334a45a8ff 268
bogdanm 0:9b334a45a8ff 269 /**
bogdanm 0:9b334a45a8ff 270 * @brief Compute the 7, 8, 16 or 32-bit CRC value of an 8, 16 or 32-bit data buffer
bogdanm 0:9b334a45a8ff 271 * starting with the previously computed CRC as initialization value.
bogdanm 0:9b334a45a8ff 272 * @param hcrc: CRC handle
bogdanm 0:9b334a45a8ff 273 * @param pBuffer: pointer to the input data buffer, exact input data format is
bogdanm 0:9b334a45a8ff 274 * provided by hcrc->InputDataFormat.
bogdanm 0:9b334a45a8ff 275 * @param BufferLength: input data buffer length
bogdanm 0:9b334a45a8ff 276 * @retval uint32_t CRC (returned value LSBs for CRC shorter than 32 bits)
bogdanm 0:9b334a45a8ff 277 */
bogdanm 0:9b334a45a8ff 278 uint32_t HAL_CRC_Accumulate(CRC_HandleTypeDef *hcrc, uint32_t pBuffer[], uint32_t BufferLength)
bogdanm 0:9b334a45a8ff 279 {
bogdanm 0:9b334a45a8ff 280 uint32_t index = 0; /* CRC input data buffer index */
bogdanm 0:9b334a45a8ff 281 uint32_t temp = 0; /* CRC output (read from hcrc->Instance->DR register) */
bogdanm 0:9b334a45a8ff 282
bogdanm 0:9b334a45a8ff 283 /* Process locked */
bogdanm 0:9b334a45a8ff 284 __HAL_LOCK(hcrc);
bogdanm 0:9b334a45a8ff 285
bogdanm 0:9b334a45a8ff 286 /* Change CRC peripheral state */
bogdanm 0:9b334a45a8ff 287 hcrc->State = HAL_CRC_STATE_BUSY;
bogdanm 0:9b334a45a8ff 288
bogdanm 0:9b334a45a8ff 289 switch (hcrc->InputDataFormat)
bogdanm 0:9b334a45a8ff 290 {
bogdanm 0:9b334a45a8ff 291 case CRC_INPUTDATA_FORMAT_WORDS:
bogdanm 0:9b334a45a8ff 292 /* Enter Data to the CRC calculator */
bogdanm 0:9b334a45a8ff 293 for(index = 0; index < BufferLength; index++)
bogdanm 0:9b334a45a8ff 294 {
bogdanm 0:9b334a45a8ff 295 hcrc->Instance->DR = pBuffer[index];
bogdanm 0:9b334a45a8ff 296 }
bogdanm 0:9b334a45a8ff 297 temp = hcrc->Instance->DR;
bogdanm 0:9b334a45a8ff 298 break;
bogdanm 0:9b334a45a8ff 299
bogdanm 0:9b334a45a8ff 300 case CRC_INPUTDATA_FORMAT_BYTES:
bogdanm 0:9b334a45a8ff 301 temp = CRC_Handle_8(hcrc, (uint8_t*)pBuffer, BufferLength);
bogdanm 0:9b334a45a8ff 302 break;
bogdanm 0:9b334a45a8ff 303
bogdanm 0:9b334a45a8ff 304 case CRC_INPUTDATA_FORMAT_HALFWORDS:
bogdanm 0:9b334a45a8ff 305 temp = CRC_Handle_16(hcrc, (uint16_t*)pBuffer, BufferLength);
bogdanm 0:9b334a45a8ff 306 break;
bogdanm 0:9b334a45a8ff 307
bogdanm 0:9b334a45a8ff 308 default:
bogdanm 0:9b334a45a8ff 309 break;
bogdanm 0:9b334a45a8ff 310 }
bogdanm 0:9b334a45a8ff 311
bogdanm 0:9b334a45a8ff 312 /* Change CRC peripheral state */
bogdanm 0:9b334a45a8ff 313 hcrc->State = HAL_CRC_STATE_READY;
bogdanm 0:9b334a45a8ff 314
bogdanm 0:9b334a45a8ff 315 /* Process unlocked */
bogdanm 0:9b334a45a8ff 316 __HAL_UNLOCK(hcrc);
bogdanm 0:9b334a45a8ff 317
bogdanm 0:9b334a45a8ff 318 /* Return the CRC computed value */
bogdanm 0:9b334a45a8ff 319 return temp;
bogdanm 0:9b334a45a8ff 320 }
bogdanm 0:9b334a45a8ff 321
bogdanm 0:9b334a45a8ff 322
bogdanm 0:9b334a45a8ff 323 /**
bogdanm 0:9b334a45a8ff 324 * @brief Compute the 7, 8, 16 or 32-bit CRC value of an 8, 16 or 32-bit data buffer
bogdanm 0:9b334a45a8ff 325 * starting with hcrc->Instance->INIT as initialization value.
bogdanm 0:9b334a45a8ff 326 * @param hcrc: CRC handle
bogdanm 0:9b334a45a8ff 327 * @param pBuffer: pointer to the input data buffer, exact input data format is
bogdanm 0:9b334a45a8ff 328 * provided by hcrc->InputDataFormat.
bogdanm 0:9b334a45a8ff 329 * @param BufferLength: input data buffer length
bogdanm 0:9b334a45a8ff 330 * @retval uint32_t CRC (returned value LSBs for CRC shorter than 32 bits)
bogdanm 0:9b334a45a8ff 331 */
bogdanm 0:9b334a45a8ff 332 uint32_t HAL_CRC_Calculate(CRC_HandleTypeDef *hcrc, uint32_t pBuffer[], uint32_t BufferLength)
bogdanm 0:9b334a45a8ff 333 {
bogdanm 0:9b334a45a8ff 334 uint32_t index = 0; /* CRC input data buffer index */
bogdanm 0:9b334a45a8ff 335 uint32_t temp = 0; /* CRC output (read from hcrc->Instance->DR register) */
bogdanm 0:9b334a45a8ff 336
bogdanm 0:9b334a45a8ff 337 /* Process locked */
bogdanm 0:9b334a45a8ff 338 __HAL_LOCK(hcrc);
bogdanm 0:9b334a45a8ff 339
bogdanm 0:9b334a45a8ff 340 /* Change CRC peripheral state */
bogdanm 0:9b334a45a8ff 341 hcrc->State = HAL_CRC_STATE_BUSY;
bogdanm 0:9b334a45a8ff 342
bogdanm 0:9b334a45a8ff 343 /* Reset CRC Calculation Unit (hcrc->Instance->INIT is
bogdanm 0:9b334a45a8ff 344 * written in hcrc->Instance->DR) */
bogdanm 0:9b334a45a8ff 345 __HAL_CRC_DR_RESET(hcrc);
bogdanm 0:9b334a45a8ff 346
bogdanm 0:9b334a45a8ff 347 switch (hcrc->InputDataFormat)
bogdanm 0:9b334a45a8ff 348 {
bogdanm 0:9b334a45a8ff 349 case CRC_INPUTDATA_FORMAT_WORDS:
bogdanm 0:9b334a45a8ff 350 /* Enter 32-bit input data to the CRC calculator */
bogdanm 0:9b334a45a8ff 351 for(index = 0; index < BufferLength; index++)
bogdanm 0:9b334a45a8ff 352 {
bogdanm 0:9b334a45a8ff 353 hcrc->Instance->DR = pBuffer[index];
bogdanm 0:9b334a45a8ff 354 }
bogdanm 0:9b334a45a8ff 355 temp = hcrc->Instance->DR;
bogdanm 0:9b334a45a8ff 356 break;
bogdanm 0:9b334a45a8ff 357
bogdanm 0:9b334a45a8ff 358 case CRC_INPUTDATA_FORMAT_BYTES:
bogdanm 0:9b334a45a8ff 359 /* Specific 8-bit input data handling */
bogdanm 0:9b334a45a8ff 360 temp = CRC_Handle_8(hcrc, (uint8_t*)pBuffer, BufferLength);
bogdanm 0:9b334a45a8ff 361 break;
bogdanm 0:9b334a45a8ff 362
bogdanm 0:9b334a45a8ff 363 case CRC_INPUTDATA_FORMAT_HALFWORDS:
bogdanm 0:9b334a45a8ff 364 /* Specific 16-bit input data handling */
bogdanm 0:9b334a45a8ff 365 temp = CRC_Handle_16(hcrc, (uint16_t*)pBuffer, BufferLength);
bogdanm 0:9b334a45a8ff 366 break;
bogdanm 0:9b334a45a8ff 367
bogdanm 0:9b334a45a8ff 368 default:
bogdanm 0:9b334a45a8ff 369 break;
bogdanm 0:9b334a45a8ff 370 }
bogdanm 0:9b334a45a8ff 371
bogdanm 0:9b334a45a8ff 372 /* Change CRC peripheral state */
bogdanm 0:9b334a45a8ff 373 hcrc->State = HAL_CRC_STATE_READY;
bogdanm 0:9b334a45a8ff 374
bogdanm 0:9b334a45a8ff 375 /* Process unlocked */
bogdanm 0:9b334a45a8ff 376 __HAL_UNLOCK(hcrc);
bogdanm 0:9b334a45a8ff 377
bogdanm 0:9b334a45a8ff 378 /* Return the CRC computed value */
bogdanm 0:9b334a45a8ff 379 return temp;
bogdanm 0:9b334a45a8ff 380 }
bogdanm 0:9b334a45a8ff 381 /**
bogdanm 0:9b334a45a8ff 382 * @}
bogdanm 0:9b334a45a8ff 383 */
bogdanm 0:9b334a45a8ff 384
bogdanm 0:9b334a45a8ff 385 /** @defgroup CRC_Exported_Functions_Group3 Peripheral State functions
bogdanm 0:9b334a45a8ff 386 * @brief Peripheral State functions.
bogdanm 0:9b334a45a8ff 387 *
bogdanm 0:9b334a45a8ff 388 @verbatim
bogdanm 0:9b334a45a8ff 389 ===============================================================================
bogdanm 0:9b334a45a8ff 390 ##### Peripheral State functions #####
bogdanm 0:9b334a45a8ff 391 ===============================================================================
bogdanm 0:9b334a45a8ff 392 [..]
bogdanm 0:9b334a45a8ff 393 This subsection permits to get in run-time the status of the peripheral
bogdanm 0:9b334a45a8ff 394 and the data flow.
bogdanm 0:9b334a45a8ff 395
bogdanm 0:9b334a45a8ff 396 @endverbatim
bogdanm 0:9b334a45a8ff 397 * @{
bogdanm 0:9b334a45a8ff 398 */
bogdanm 0:9b334a45a8ff 399
bogdanm 0:9b334a45a8ff 400 /**
bogdanm 0:9b334a45a8ff 401 * @brief Returns the CRC state.
bogdanm 0:9b334a45a8ff 402 * @param hcrc: CRC handle
bogdanm 0:9b334a45a8ff 403 * @retval HAL state
bogdanm 0:9b334a45a8ff 404 */
bogdanm 0:9b334a45a8ff 405 HAL_CRC_StateTypeDef HAL_CRC_GetState(CRC_HandleTypeDef *hcrc)
bogdanm 0:9b334a45a8ff 406 {
bogdanm 0:9b334a45a8ff 407 return hcrc->State;
bogdanm 0:9b334a45a8ff 408 }
bogdanm 0:9b334a45a8ff 409
bogdanm 0:9b334a45a8ff 410 /**
bogdanm 0:9b334a45a8ff 411 * @}
bogdanm 0:9b334a45a8ff 412 */
bogdanm 0:9b334a45a8ff 413
bogdanm 0:9b334a45a8ff 414 /**
bogdanm 0:9b334a45a8ff 415 * @}
bogdanm 0:9b334a45a8ff 416 */
bogdanm 0:9b334a45a8ff 417
bogdanm 0:9b334a45a8ff 418 /** @addtogroup CRC_Private_Functions CRC Private Functions
bogdanm 0:9b334a45a8ff 419 * @{
bogdanm 0:9b334a45a8ff 420 */
bogdanm 0:9b334a45a8ff 421 /**
bogdanm 0:9b334a45a8ff 422 * @brief Enter 8-bit input data to the CRC calculator.
bogdanm 0:9b334a45a8ff 423 * Specific data handling to optimize processing time.
bogdanm 0:9b334a45a8ff 424 * @param hcrc: CRC handle
bogdanm 0:9b334a45a8ff 425 * @param pBuffer: pointer to the input data buffer
bogdanm 0:9b334a45a8ff 426 * @param BufferLength: input data buffer length
bogdanm 0:9b334a45a8ff 427 * @retval uint32_t CRC (returned value LSBs for CRC shorter than 32 bits)
bogdanm 0:9b334a45a8ff 428 */
bogdanm 0:9b334a45a8ff 429 static uint32_t CRC_Handle_8(CRC_HandleTypeDef *hcrc, uint8_t pBuffer[], uint32_t BufferLength)
bogdanm 0:9b334a45a8ff 430 {
bogdanm 0:9b334a45a8ff 431 uint32_t i = 0; /* input data buffer index */
bogdanm 0:9b334a45a8ff 432
bogdanm 0:9b334a45a8ff 433 /* Processing time optimization: 4 bytes are entered in a row with a single word write,
bogdanm 0:9b334a45a8ff 434 * last bytes must be carefully fed to the CRC calculator to ensure a correct type
bogdanm 0:9b334a45a8ff 435 * handling by the IP */
bogdanm 0:9b334a45a8ff 436 for(i = 0; i < (BufferLength/4); i++)
bogdanm 0:9b334a45a8ff 437 {
bogdanm 0:9b334a45a8ff 438 hcrc->Instance->DR = ((uint32_t)pBuffer[4*i]<<24) | ((uint32_t)pBuffer[4*i+1]<<16) | ((uint32_t)pBuffer[4*i+2]<<8) | (uint32_t)pBuffer[4*i+3];
bogdanm 0:9b334a45a8ff 439 }
bogdanm 0:9b334a45a8ff 440 /* last bytes specific handling */
bogdanm 0:9b334a45a8ff 441 if ((BufferLength%4) != 0)
bogdanm 0:9b334a45a8ff 442 {
bogdanm 0:9b334a45a8ff 443 if (BufferLength%4 == 1)
bogdanm 0:9b334a45a8ff 444 {
bogdanm 0:9b334a45a8ff 445 *(uint8_t*) (&hcrc->Instance->DR) = pBuffer[4*i];
bogdanm 0:9b334a45a8ff 446 }
bogdanm 0:9b334a45a8ff 447 if (BufferLength%4 == 2)
bogdanm 0:9b334a45a8ff 448 {
bogdanm 0:9b334a45a8ff 449 *(uint16_t*) (&hcrc->Instance->DR) = ((uint16_t)pBuffer[4*i]<<8) | (uint16_t)pBuffer[4*i+1];
bogdanm 0:9b334a45a8ff 450 }
bogdanm 0:9b334a45a8ff 451 if (BufferLength%4 == 3)
bogdanm 0:9b334a45a8ff 452 {
bogdanm 0:9b334a45a8ff 453 *(uint16_t*) (&hcrc->Instance->DR) = ((uint16_t)pBuffer[4*i]<<8) | (uint16_t)pBuffer[4*i+1];
bogdanm 0:9b334a45a8ff 454 *(uint8_t*) (&hcrc->Instance->DR) = pBuffer[4*i+2];
bogdanm 0:9b334a45a8ff 455 }
bogdanm 0:9b334a45a8ff 456 }
bogdanm 0:9b334a45a8ff 457
bogdanm 0:9b334a45a8ff 458 /* Return the CRC computed value */
bogdanm 0:9b334a45a8ff 459 return hcrc->Instance->DR;
bogdanm 0:9b334a45a8ff 460 }
bogdanm 0:9b334a45a8ff 461
bogdanm 0:9b334a45a8ff 462
bogdanm 0:9b334a45a8ff 463
bogdanm 0:9b334a45a8ff 464 /**
bogdanm 0:9b334a45a8ff 465 * @brief Enter 16-bit input data to the CRC calculator.
bogdanm 0:9b334a45a8ff 466 * Specific data handling to optimize processing time.
bogdanm 0:9b334a45a8ff 467 * @param hcrc: CRC handle
bogdanm 0:9b334a45a8ff 468 * @param pBuffer: pointer to the input data buffer
bogdanm 0:9b334a45a8ff 469 * @param BufferLength: input data buffer length
bogdanm 0:9b334a45a8ff 470 * @retval uint32_t CRC (returned value LSBs for CRC shorter than 32 bits)
bogdanm 0:9b334a45a8ff 471 */
bogdanm 0:9b334a45a8ff 472 static uint32_t CRC_Handle_16(CRC_HandleTypeDef *hcrc, uint16_t pBuffer[], uint32_t BufferLength)
bogdanm 0:9b334a45a8ff 473 {
bogdanm 0:9b334a45a8ff 474 uint32_t i = 0; /* input data buffer index */
bogdanm 0:9b334a45a8ff 475
bogdanm 0:9b334a45a8ff 476 /* Processing time optimization: 2 HalfWords are entered in a row with a single word write,
bogdanm 0:9b334a45a8ff 477 * in case of odd length, last HalfWord must be carefully fed to the CRC calculator to ensure
bogdanm 0:9b334a45a8ff 478 * a correct type handling by the IP */
bogdanm 0:9b334a45a8ff 479 for(i = 0; i < (BufferLength/2); i++)
bogdanm 0:9b334a45a8ff 480 {
bogdanm 0:9b334a45a8ff 481 hcrc->Instance->DR = (pBuffer[2*i]<<16) | pBuffer[2*i+1];
bogdanm 0:9b334a45a8ff 482 }
bogdanm 0:9b334a45a8ff 483 if ((BufferLength%2) != 0)
bogdanm 0:9b334a45a8ff 484 {
bogdanm 0:9b334a45a8ff 485 *(uint16_t*) (&hcrc->Instance->DR) = pBuffer[2*i];
bogdanm 0:9b334a45a8ff 486 }
bogdanm 0:9b334a45a8ff 487
bogdanm 0:9b334a45a8ff 488 /* Return the CRC computed value */
bogdanm 0:9b334a45a8ff 489 return hcrc->Instance->DR;
bogdanm 0:9b334a45a8ff 490 }
bogdanm 0:9b334a45a8ff 491 /**
bogdanm 0:9b334a45a8ff 492 * @}
bogdanm 0:9b334a45a8ff 493 */
bogdanm 0:9b334a45a8ff 494
bogdanm 0:9b334a45a8ff 495 /**
bogdanm 0:9b334a45a8ff 496 * @}
bogdanm 0:9b334a45a8ff 497 */
bogdanm 0:9b334a45a8ff 498
bogdanm 0:9b334a45a8ff 499 #endif /* HAL_CRC_MODULE_ENABLED */
bogdanm 0:9b334a45a8ff 500 /**
bogdanm 0:9b334a45a8ff 501 * @}
bogdanm 0:9b334a45a8ff 502 */
bogdanm 0:9b334a45a8ff 503
bogdanm 0:9b334a45a8ff 504 /**
bogdanm 0:9b334a45a8ff 505 * @}
bogdanm 0:9b334a45a8ff 506 */
bogdanm 0:9b334a45a8ff 507
bogdanm 0:9b334a45a8ff 508 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/