mbed library sources modified for open wear
Dependents: openwear-lifelogger-example
Fork of mbed-src by
targets/cmsis/TARGET_STM/TARGET_NUCLEO_F334R8/stm32f3xx_hal_crc.c@310:6188e0254baa, 2014-09-16 (annotated)
- Committer:
- janekm
- Date:
- Tue Sep 16 22:42:01 2014 +0000
- Revision:
- 310:6188e0254baa
- Parent:
- 237:f3da66175598
N/A
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 237:f3da66175598 | 1 | /** |
mbed_official | 237:f3da66175598 | 2 | ****************************************************************************** |
mbed_official | 237:f3da66175598 | 3 | * @file stm32f3xx_hal_crc.c |
mbed_official | 237:f3da66175598 | 4 | * @author MCD Application Team |
mbed_official | 237:f3da66175598 | 5 | * @version V1.0.1 |
mbed_official | 237:f3da66175598 | 6 | * @date 18-June-2014 |
mbed_official | 237:f3da66175598 | 7 | * @brief CRC HAL module driver. |
mbed_official | 237:f3da66175598 | 8 | * |
mbed_official | 237:f3da66175598 | 9 | * This file provides firmware functions to manage the following |
mbed_official | 237:f3da66175598 | 10 | * functionalities of the CRC peripheral: |
mbed_official | 237:f3da66175598 | 11 | * + Initialization and de-initialization functions |
mbed_official | 237:f3da66175598 | 12 | * + Peripheral Control functions |
mbed_official | 237:f3da66175598 | 13 | * + Peripheral State functions |
mbed_official | 237:f3da66175598 | 14 | * |
mbed_official | 237:f3da66175598 | 15 | @verbatim |
mbed_official | 237:f3da66175598 | 16 | =============================================================================== |
mbed_official | 237:f3da66175598 | 17 | ##### How to use this driver ##### |
mbed_official | 237:f3da66175598 | 18 | =============================================================================== |
mbed_official | 237:f3da66175598 | 19 | [..] |
mbed_official | 237:f3da66175598 | 20 | (+) Enable CRC AHB clock using __CRC_CLK_ENABLE(); |
mbed_official | 237:f3da66175598 | 21 | (+) Initialize CRC calculator |
mbed_official | 237:f3da66175598 | 22 | - specify generating polynomial (IP default or non-default one) |
mbed_official | 237:f3da66175598 | 23 | - specify initialization value (IP default or non-default one) |
mbed_official | 237:f3da66175598 | 24 | - specify input data format |
mbed_official | 237:f3da66175598 | 25 | - specify input or output data inversion mode if any |
mbed_official | 237:f3da66175598 | 26 | (+) Use HAL_CRC_Accumulate() function to compute the CRC value of the |
mbed_official | 237:f3da66175598 | 27 | input data buffer starting with the previously computed CRC as |
mbed_official | 237:f3da66175598 | 28 | initialization value |
mbed_official | 237:f3da66175598 | 29 | (+) Use HAL_CRC_Calculate() function to compute the CRC value of the |
mbed_official | 237:f3da66175598 | 30 | input data buffer starting with the defined initialization value |
mbed_official | 237:f3da66175598 | 31 | (default or non-default) to initiate CRC calculation |
mbed_official | 237:f3da66175598 | 32 | |
mbed_official | 237:f3da66175598 | 33 | @endverbatim |
mbed_official | 237:f3da66175598 | 34 | ****************************************************************************** |
mbed_official | 237:f3da66175598 | 35 | * @attention |
mbed_official | 237:f3da66175598 | 36 | * |
mbed_official | 237:f3da66175598 | 37 | * <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2> |
mbed_official | 237:f3da66175598 | 38 | * |
mbed_official | 237:f3da66175598 | 39 | * Redistribution and use in source and binary forms, with or without modification, |
mbed_official | 237:f3da66175598 | 40 | * are permitted provided that the following conditions are met: |
mbed_official | 237:f3da66175598 | 41 | * 1. Redistributions of source code must retain the above copyright notice, |
mbed_official | 237:f3da66175598 | 42 | * this list of conditions and the following disclaimer. |
mbed_official | 237:f3da66175598 | 43 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
mbed_official | 237:f3da66175598 | 44 | * this list of conditions and the following disclaimer in the documentation |
mbed_official | 237:f3da66175598 | 45 | * and/or other materials provided with the distribution. |
mbed_official | 237:f3da66175598 | 46 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
mbed_official | 237:f3da66175598 | 47 | * may be used to endorse or promote products derived from this software |
mbed_official | 237:f3da66175598 | 48 | * without specific prior written permission. |
mbed_official | 237:f3da66175598 | 49 | * |
mbed_official | 237:f3da66175598 | 50 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
mbed_official | 237:f3da66175598 | 51 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
mbed_official | 237:f3da66175598 | 52 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
mbed_official | 237:f3da66175598 | 53 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
mbed_official | 237:f3da66175598 | 54 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
mbed_official | 237:f3da66175598 | 55 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
mbed_official | 237:f3da66175598 | 56 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
mbed_official | 237:f3da66175598 | 57 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
mbed_official | 237:f3da66175598 | 58 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
mbed_official | 237:f3da66175598 | 59 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
mbed_official | 237:f3da66175598 | 60 | * |
mbed_official | 237:f3da66175598 | 61 | ****************************************************************************** |
mbed_official | 237:f3da66175598 | 62 | */ |
mbed_official | 237:f3da66175598 | 63 | |
mbed_official | 237:f3da66175598 | 64 | /* Includes ------------------------------------------------------------------*/ |
mbed_official | 237:f3da66175598 | 65 | #include "stm32f3xx_hal.h" |
mbed_official | 237:f3da66175598 | 66 | |
mbed_official | 237:f3da66175598 | 67 | /** @addtogroup STM32F3xx_HAL_Driver |
mbed_official | 237:f3da66175598 | 68 | * @{ |
mbed_official | 237:f3da66175598 | 69 | */ |
mbed_official | 237:f3da66175598 | 70 | |
mbed_official | 237:f3da66175598 | 71 | /** @defgroup CRC |
mbed_official | 237:f3da66175598 | 72 | * @brief CRC HAL module driver. |
mbed_official | 237:f3da66175598 | 73 | * @{ |
mbed_official | 237:f3da66175598 | 74 | */ |
mbed_official | 237:f3da66175598 | 75 | |
mbed_official | 237:f3da66175598 | 76 | #ifdef HAL_CRC_MODULE_ENABLED |
mbed_official | 237:f3da66175598 | 77 | |
mbed_official | 237:f3da66175598 | 78 | /* Private typedef -----------------------------------------------------------*/ |
mbed_official | 237:f3da66175598 | 79 | /* Private define ------------------------------------------------------------*/ |
mbed_official | 237:f3da66175598 | 80 | /* Private macro -------------------------------------------------------------*/ |
mbed_official | 237:f3da66175598 | 81 | /* Private variables ---------------------------------------------------------*/ |
mbed_official | 237:f3da66175598 | 82 | /* Private function prototypes -----------------------------------------------*/ |
mbed_official | 237:f3da66175598 | 83 | /* Private functions ---------------------------------------------------------*/ |
mbed_official | 237:f3da66175598 | 84 | static uint32_t CRC_Handle_8(CRC_HandleTypeDef *hcrc, uint8_t pBuffer[], uint32_t BufferLength); |
mbed_official | 237:f3da66175598 | 85 | static uint32_t CRC_Handle_16(CRC_HandleTypeDef *hcrc, uint16_t pBuffer[], uint32_t BufferLength); |
mbed_official | 237:f3da66175598 | 86 | /** @defgroup CRC_Private_Functions |
mbed_official | 237:f3da66175598 | 87 | * @{ |
mbed_official | 237:f3da66175598 | 88 | */ |
mbed_official | 237:f3da66175598 | 89 | |
mbed_official | 237:f3da66175598 | 90 | /** @defgroup HAL_CRC_Group1 Initialization/de-initialization functions |
mbed_official | 237:f3da66175598 | 91 | * @brief Initialization and Configuration functions. |
mbed_official | 237:f3da66175598 | 92 | * |
mbed_official | 237:f3da66175598 | 93 | @verbatim |
mbed_official | 237:f3da66175598 | 94 | =============================================================================== |
mbed_official | 237:f3da66175598 | 95 | ##### Initialization/de-initialization functions ##### |
mbed_official | 237:f3da66175598 | 96 | =============================================================================== |
mbed_official | 237:f3da66175598 | 97 | [..] This section provides functions allowing to: |
mbed_official | 237:f3da66175598 | 98 | (+) Initialize the CRC according to the specified parameters |
mbed_official | 237:f3da66175598 | 99 | in the CRC_InitTypeDef and create the associated handle |
mbed_official | 237:f3da66175598 | 100 | (+) DeInitialize the CRC peripheral |
mbed_official | 237:f3da66175598 | 101 | (+) Initialize the CRC MSP |
mbed_official | 237:f3da66175598 | 102 | (+) DeInitialize CRC MSP |
mbed_official | 237:f3da66175598 | 103 | |
mbed_official | 237:f3da66175598 | 104 | @endverbatim |
mbed_official | 237:f3da66175598 | 105 | * @{ |
mbed_official | 237:f3da66175598 | 106 | */ |
mbed_official | 237:f3da66175598 | 107 | |
mbed_official | 237:f3da66175598 | 108 | /** |
mbed_official | 237:f3da66175598 | 109 | * @brief Initializes the CRC according to the specified |
mbed_official | 237:f3da66175598 | 110 | * parameters in the CRC_InitTypeDef and creates the associated handle. |
mbed_official | 237:f3da66175598 | 111 | * @param hcrc: CRC handle |
mbed_official | 237:f3da66175598 | 112 | * @retval HAL status |
mbed_official | 237:f3da66175598 | 113 | */ |
mbed_official | 237:f3da66175598 | 114 | HAL_StatusTypeDef HAL_CRC_Init(CRC_HandleTypeDef *hcrc) |
mbed_official | 237:f3da66175598 | 115 | { |
mbed_official | 237:f3da66175598 | 116 | /* Check the CRC handle allocation */ |
mbed_official | 237:f3da66175598 | 117 | if(hcrc == NULL) |
mbed_official | 237:f3da66175598 | 118 | { |
mbed_official | 237:f3da66175598 | 119 | return HAL_ERROR; |
mbed_official | 237:f3da66175598 | 120 | } |
mbed_official | 237:f3da66175598 | 121 | |
mbed_official | 237:f3da66175598 | 122 | /* Check the parameters */ |
mbed_official | 237:f3da66175598 | 123 | assert_param(IS_CRC_ALL_INSTANCE(hcrc->Instance)); |
mbed_official | 237:f3da66175598 | 124 | |
mbed_official | 237:f3da66175598 | 125 | if(hcrc->State == HAL_CRC_STATE_RESET) |
mbed_official | 237:f3da66175598 | 126 | { |
mbed_official | 237:f3da66175598 | 127 | /* Init the low level hardware */ |
mbed_official | 237:f3da66175598 | 128 | HAL_CRC_MspInit(hcrc); |
mbed_official | 237:f3da66175598 | 129 | } |
mbed_official | 237:f3da66175598 | 130 | |
mbed_official | 237:f3da66175598 | 131 | hcrc->State = HAL_CRC_STATE_BUSY; |
mbed_official | 237:f3da66175598 | 132 | |
mbed_official | 237:f3da66175598 | 133 | /* check whether or not non-default generating polynomial has been |
mbed_official | 237:f3da66175598 | 134 | * picked up by user */ |
mbed_official | 237:f3da66175598 | 135 | assert_param(IS_DEFAULT_POLYNOMIAL(hcrc->Init.DefaultPolynomialUse)); |
mbed_official | 237:f3da66175598 | 136 | if (hcrc->Init.DefaultPolynomialUse == DEFAULT_POLYNOMIAL_ENABLE) |
mbed_official | 237:f3da66175598 | 137 | { |
mbed_official | 237:f3da66175598 | 138 | /* initialize IP with default generating polynomial */ |
mbed_official | 237:f3da66175598 | 139 | WRITE_REG(hcrc->Instance->POL, DEFAULT_CRC32_POLY); |
mbed_official | 237:f3da66175598 | 140 | MODIFY_REG(hcrc->Instance->CR, CRC_CR_POLYSIZE, CRC_POLYLENGTH_32B); |
mbed_official | 237:f3da66175598 | 141 | } |
mbed_official | 237:f3da66175598 | 142 | else |
mbed_official | 237:f3da66175598 | 143 | { |
mbed_official | 237:f3da66175598 | 144 | /* initialize CRC IP with generating polynomial defined by user */ |
mbed_official | 237:f3da66175598 | 145 | if (HAL_CRCEx_Polynomial_Set(hcrc, hcrc->Init.GeneratingPolynomial, hcrc->Init.CRCLength) != HAL_OK) |
mbed_official | 237:f3da66175598 | 146 | { |
mbed_official | 237:f3da66175598 | 147 | return HAL_ERROR; |
mbed_official | 237:f3da66175598 | 148 | } |
mbed_official | 237:f3da66175598 | 149 | } |
mbed_official | 237:f3da66175598 | 150 | |
mbed_official | 237:f3da66175598 | 151 | /* check whether or not non-default CRC initial value has been |
mbed_official | 237:f3da66175598 | 152 | * picked up by user */ |
mbed_official | 237:f3da66175598 | 153 | assert_param(IS_DEFAULT_INIT_VALUE(hcrc->Init.DefaultInitValueUse)); |
mbed_official | 237:f3da66175598 | 154 | if (hcrc->Init.DefaultInitValueUse == DEFAULT_INIT_VALUE_ENABLE) |
mbed_official | 237:f3da66175598 | 155 | { |
mbed_official | 237:f3da66175598 | 156 | WRITE_REG(hcrc->Instance->INIT, DEFAULT_CRC_INITVALUE); |
mbed_official | 237:f3da66175598 | 157 | } |
mbed_official | 237:f3da66175598 | 158 | else |
mbed_official | 237:f3da66175598 | 159 | { |
mbed_official | 237:f3da66175598 | 160 | WRITE_REG(hcrc->Instance->INIT, hcrc->Init.InitValue); |
mbed_official | 237:f3da66175598 | 161 | } |
mbed_official | 237:f3da66175598 | 162 | |
mbed_official | 237:f3da66175598 | 163 | |
mbed_official | 237:f3da66175598 | 164 | /* set input data inversion mode */ |
mbed_official | 237:f3da66175598 | 165 | assert_param(IS_CRC_INPUTDATA_INVERSION_MODE(hcrc->Init.InputDataInversionMode)); |
mbed_official | 237:f3da66175598 | 166 | MODIFY_REG(hcrc->Instance->CR, CRC_CR_REV_IN, hcrc->Init.InputDataInversionMode); |
mbed_official | 237:f3da66175598 | 167 | |
mbed_official | 237:f3da66175598 | 168 | /* set output data inversion mode */ |
mbed_official | 237:f3da66175598 | 169 | assert_param(IS_CRC_OUTPUTDATA_INVERSION_MODE(hcrc->Init.OutputDataInversionMode)); |
mbed_official | 237:f3da66175598 | 170 | MODIFY_REG(hcrc->Instance->CR, CRC_CR_REV_OUT, hcrc->Init.OutputDataInversionMode); |
mbed_official | 237:f3da66175598 | 171 | |
mbed_official | 237:f3da66175598 | 172 | /* makes sure the input data format (bytes, halfwords or words stream) |
mbed_official | 237:f3da66175598 | 173 | * is properly specified by user */ |
mbed_official | 237:f3da66175598 | 174 | assert_param(IS_CRC_INPUTDATA_FORMAT(hcrc->InputDataFormat)); |
mbed_official | 237:f3da66175598 | 175 | |
mbed_official | 237:f3da66175598 | 176 | /* Change CRC peripheral state */ |
mbed_official | 237:f3da66175598 | 177 | hcrc->State = HAL_CRC_STATE_READY; |
mbed_official | 237:f3da66175598 | 178 | |
mbed_official | 237:f3da66175598 | 179 | /* Return function status */ |
mbed_official | 237:f3da66175598 | 180 | return HAL_OK; |
mbed_official | 237:f3da66175598 | 181 | } |
mbed_official | 237:f3da66175598 | 182 | |
mbed_official | 237:f3da66175598 | 183 | /** |
mbed_official | 237:f3da66175598 | 184 | * @brief DeInitializes the CRC peripheral. |
mbed_official | 237:f3da66175598 | 185 | * @param hcrc: CRC handle |
mbed_official | 237:f3da66175598 | 186 | * @retval HAL status |
mbed_official | 237:f3da66175598 | 187 | */ |
mbed_official | 237:f3da66175598 | 188 | HAL_StatusTypeDef HAL_CRC_DeInit(CRC_HandleTypeDef *hcrc) |
mbed_official | 237:f3da66175598 | 189 | { |
mbed_official | 237:f3da66175598 | 190 | /* Check the CRC handle allocation */ |
mbed_official | 237:f3da66175598 | 191 | if(hcrc == NULL) |
mbed_official | 237:f3da66175598 | 192 | { |
mbed_official | 237:f3da66175598 | 193 | return HAL_ERROR; |
mbed_official | 237:f3da66175598 | 194 | } |
mbed_official | 237:f3da66175598 | 195 | |
mbed_official | 237:f3da66175598 | 196 | /* Check the parameters */ |
mbed_official | 237:f3da66175598 | 197 | assert_param(IS_CRC_ALL_INSTANCE(hcrc->Instance)); |
mbed_official | 237:f3da66175598 | 198 | |
mbed_official | 237:f3da66175598 | 199 | /* Check the CRC peripheral state */ |
mbed_official | 237:f3da66175598 | 200 | if(hcrc->State == HAL_CRC_STATE_BUSY) |
mbed_official | 237:f3da66175598 | 201 | { |
mbed_official | 237:f3da66175598 | 202 | return HAL_BUSY; |
mbed_official | 237:f3da66175598 | 203 | } |
mbed_official | 237:f3da66175598 | 204 | |
mbed_official | 237:f3da66175598 | 205 | /* Change CRC peripheral state */ |
mbed_official | 237:f3da66175598 | 206 | hcrc->State = HAL_CRC_STATE_BUSY; |
mbed_official | 237:f3da66175598 | 207 | |
mbed_official | 237:f3da66175598 | 208 | /* DeInit the low level hardware */ |
mbed_official | 237:f3da66175598 | 209 | HAL_CRC_MspDeInit(hcrc); |
mbed_official | 237:f3da66175598 | 210 | |
mbed_official | 237:f3da66175598 | 211 | /* Change CRC peripheral state */ |
mbed_official | 237:f3da66175598 | 212 | hcrc->State = HAL_CRC_STATE_RESET; |
mbed_official | 237:f3da66175598 | 213 | |
mbed_official | 237:f3da66175598 | 214 | /* Process unlocked */ |
mbed_official | 237:f3da66175598 | 215 | __HAL_UNLOCK(hcrc); |
mbed_official | 237:f3da66175598 | 216 | |
mbed_official | 237:f3da66175598 | 217 | /* Return function status */ |
mbed_official | 237:f3da66175598 | 218 | return HAL_OK; |
mbed_official | 237:f3da66175598 | 219 | } |
mbed_official | 237:f3da66175598 | 220 | |
mbed_official | 237:f3da66175598 | 221 | /** |
mbed_official | 237:f3da66175598 | 222 | * @brief Initializes the CRC MSP. |
mbed_official | 237:f3da66175598 | 223 | * @param hcrc: CRC handle |
mbed_official | 237:f3da66175598 | 224 | * @retval None |
mbed_official | 237:f3da66175598 | 225 | */ |
mbed_official | 237:f3da66175598 | 226 | __weak void HAL_CRC_MspInit(CRC_HandleTypeDef *hcrc) |
mbed_official | 237:f3da66175598 | 227 | { |
mbed_official | 237:f3da66175598 | 228 | /* NOTE : This function should not be modified, when the callback is needed, |
mbed_official | 237:f3da66175598 | 229 | the HAL_CRC_MspInit can be implemented in the user file |
mbed_official | 237:f3da66175598 | 230 | */ |
mbed_official | 237:f3da66175598 | 231 | } |
mbed_official | 237:f3da66175598 | 232 | |
mbed_official | 237:f3da66175598 | 233 | /** |
mbed_official | 237:f3da66175598 | 234 | * @brief DeInitializes the CRC MSP. |
mbed_official | 237:f3da66175598 | 235 | * @param hcrc: CRC handle |
mbed_official | 237:f3da66175598 | 236 | * @retval None |
mbed_official | 237:f3da66175598 | 237 | */ |
mbed_official | 237:f3da66175598 | 238 | __weak void HAL_CRC_MspDeInit(CRC_HandleTypeDef *hcrc) |
mbed_official | 237:f3da66175598 | 239 | { |
mbed_official | 237:f3da66175598 | 240 | /* NOTE : This function should not be modified, when the callback is needed, |
mbed_official | 237:f3da66175598 | 241 | the HAL_CRC_MspDeInit can be implemented in the user file |
mbed_official | 237:f3da66175598 | 242 | */ |
mbed_official | 237:f3da66175598 | 243 | } |
mbed_official | 237:f3da66175598 | 244 | |
mbed_official | 237:f3da66175598 | 245 | /** |
mbed_official | 237:f3da66175598 | 246 | * @} |
mbed_official | 237:f3da66175598 | 247 | */ |
mbed_official | 237:f3da66175598 | 248 | |
mbed_official | 237:f3da66175598 | 249 | /** @defgroup HAL_CRC_Group2 Peripheral Control functions |
mbed_official | 237:f3da66175598 | 250 | * @brief management functions. |
mbed_official | 237:f3da66175598 | 251 | * |
mbed_official | 237:f3da66175598 | 252 | @verbatim |
mbed_official | 237:f3da66175598 | 253 | =============================================================================== |
mbed_official | 237:f3da66175598 | 254 | ##### Peripheral Control functions ##### |
mbed_official | 237:f3da66175598 | 255 | =============================================================================== |
mbed_official | 237:f3da66175598 | 256 | [..] This section provides functions allowing to: |
mbed_official | 237:f3da66175598 | 257 | (+) Compute the 7, 8, 16 or 32-bit CRC value of an 8, 16 or 32-bit data buffer |
mbed_official | 237:f3da66175598 | 258 | using combination of the previous CRC value and the new one. |
mbed_official | 237:f3da66175598 | 259 | |
mbed_official | 237:f3da66175598 | 260 | or |
mbed_official | 237:f3da66175598 | 261 | |
mbed_official | 237:f3da66175598 | 262 | (+) Compute the 7, 8, 16 or 32-bit CRC value of an 8, 16 or 32-bit data buffer |
mbed_official | 237:f3da66175598 | 263 | independently of the previous CRC value. |
mbed_official | 237:f3da66175598 | 264 | |
mbed_official | 237:f3da66175598 | 265 | @endverbatim |
mbed_official | 237:f3da66175598 | 266 | * @{ |
mbed_official | 237:f3da66175598 | 267 | */ |
mbed_official | 237:f3da66175598 | 268 | |
mbed_official | 237:f3da66175598 | 269 | /** |
mbed_official | 237:f3da66175598 | 270 | * @brief Compute the 7, 8, 16 or 32-bit CRC value of an 8, 16 or 32-bit data buffer |
mbed_official | 237:f3da66175598 | 271 | * starting with the previously computed CRC as initialization value. |
mbed_official | 237:f3da66175598 | 272 | * @param hcrc: CRC handle |
mbed_official | 237:f3da66175598 | 273 | * @param pBuffer: pointer to the input data buffer, exact input data format is |
mbed_official | 237:f3da66175598 | 274 | * provided by hcrc->InputDataFormat. |
mbed_official | 237:f3da66175598 | 275 | * @param BufferLength: input data buffer length |
mbed_official | 237:f3da66175598 | 276 | * @retval uint32_t CRC (returned value LSBs for CRC shorter than 32 bits) |
mbed_official | 237:f3da66175598 | 277 | */ |
mbed_official | 237:f3da66175598 | 278 | uint32_t HAL_CRC_Accumulate(CRC_HandleTypeDef *hcrc, uint32_t pBuffer[], uint32_t BufferLength) |
mbed_official | 237:f3da66175598 | 279 | { |
mbed_official | 237:f3da66175598 | 280 | uint32_t index = 0; /* CRC input data buffer index */ |
mbed_official | 237:f3da66175598 | 281 | uint32_t temp = 0; /* CRC output (read from hcrc->Instance->DR register) */ |
mbed_official | 237:f3da66175598 | 282 | |
mbed_official | 237:f3da66175598 | 283 | /* Process locked */ |
mbed_official | 237:f3da66175598 | 284 | __HAL_LOCK(hcrc); |
mbed_official | 237:f3da66175598 | 285 | |
mbed_official | 237:f3da66175598 | 286 | /* Change CRC peripheral state */ |
mbed_official | 237:f3da66175598 | 287 | hcrc->State = HAL_CRC_STATE_BUSY; |
mbed_official | 237:f3da66175598 | 288 | |
mbed_official | 237:f3da66175598 | 289 | switch (hcrc->InputDataFormat) |
mbed_official | 237:f3da66175598 | 290 | { |
mbed_official | 237:f3da66175598 | 291 | case CRC_INPUTDATA_FORMAT_WORDS: |
mbed_official | 237:f3da66175598 | 292 | /* Enter Data to the CRC calculator */ |
mbed_official | 237:f3da66175598 | 293 | for(index = 0; index < BufferLength; index++) |
mbed_official | 237:f3da66175598 | 294 | { |
mbed_official | 237:f3da66175598 | 295 | hcrc->Instance->DR = pBuffer[index]; |
mbed_official | 237:f3da66175598 | 296 | } |
mbed_official | 237:f3da66175598 | 297 | temp = hcrc->Instance->DR; |
mbed_official | 237:f3da66175598 | 298 | break; |
mbed_official | 237:f3da66175598 | 299 | |
mbed_official | 237:f3da66175598 | 300 | case CRC_INPUTDATA_FORMAT_BYTES: |
mbed_official | 237:f3da66175598 | 301 | temp = CRC_Handle_8(hcrc, (uint8_t*)pBuffer, BufferLength); |
mbed_official | 237:f3da66175598 | 302 | break; |
mbed_official | 237:f3da66175598 | 303 | |
mbed_official | 237:f3da66175598 | 304 | case CRC_INPUTDATA_FORMAT_HALFWORDS: |
mbed_official | 237:f3da66175598 | 305 | temp = CRC_Handle_16(hcrc, (uint16_t*)pBuffer, BufferLength); |
mbed_official | 237:f3da66175598 | 306 | break; |
mbed_official | 237:f3da66175598 | 307 | } |
mbed_official | 237:f3da66175598 | 308 | |
mbed_official | 237:f3da66175598 | 309 | /* Change CRC peripheral state */ |
mbed_official | 237:f3da66175598 | 310 | hcrc->State = HAL_CRC_STATE_READY; |
mbed_official | 237:f3da66175598 | 311 | |
mbed_official | 237:f3da66175598 | 312 | /* Process unlocked */ |
mbed_official | 237:f3da66175598 | 313 | __HAL_UNLOCK(hcrc); |
mbed_official | 237:f3da66175598 | 314 | |
mbed_official | 237:f3da66175598 | 315 | /* Return the CRC computed value */ |
mbed_official | 237:f3da66175598 | 316 | return temp; |
mbed_official | 237:f3da66175598 | 317 | } |
mbed_official | 237:f3da66175598 | 318 | |
mbed_official | 237:f3da66175598 | 319 | |
mbed_official | 237:f3da66175598 | 320 | /** |
mbed_official | 237:f3da66175598 | 321 | * @brief Compute the 7, 8, 16 or 32-bit CRC value of an 8, 16 or 32-bit data buffer |
mbed_official | 237:f3da66175598 | 322 | * starting with hcrc->Instance->INIT as initialization value. |
mbed_official | 237:f3da66175598 | 323 | * @param hcrc: CRC handle |
mbed_official | 237:f3da66175598 | 324 | * @param pBuffer: pointer to the input data buffer, exact input data format is |
mbed_official | 237:f3da66175598 | 325 | * provided by hcrc->InputDataFormat. |
mbed_official | 237:f3da66175598 | 326 | * @param BufferLength: input data buffer length |
mbed_official | 237:f3da66175598 | 327 | * @retval uint32_t CRC (returned value LSBs for CRC shorter than 32 bits) |
mbed_official | 237:f3da66175598 | 328 | */ |
mbed_official | 237:f3da66175598 | 329 | uint32_t HAL_CRC_Calculate(CRC_HandleTypeDef *hcrc, uint32_t pBuffer[], uint32_t BufferLength) |
mbed_official | 237:f3da66175598 | 330 | { |
mbed_official | 237:f3da66175598 | 331 | uint32_t index = 0; /* CRC input data buffer index */ |
mbed_official | 237:f3da66175598 | 332 | uint32_t temp = 0; /* CRC output (read from hcrc->Instance->DR register) */ |
mbed_official | 237:f3da66175598 | 333 | |
mbed_official | 237:f3da66175598 | 334 | /* Process locked */ |
mbed_official | 237:f3da66175598 | 335 | __HAL_LOCK(hcrc); |
mbed_official | 237:f3da66175598 | 336 | |
mbed_official | 237:f3da66175598 | 337 | /* Change CRC peripheral state */ |
mbed_official | 237:f3da66175598 | 338 | hcrc->State = HAL_CRC_STATE_BUSY; |
mbed_official | 237:f3da66175598 | 339 | |
mbed_official | 237:f3da66175598 | 340 | /* Reset CRC Calculation Unit (hcrc->Instance->INIT is |
mbed_official | 237:f3da66175598 | 341 | * written in hcrc->Instance->DR) */ |
mbed_official | 237:f3da66175598 | 342 | __HAL_CRC_DR_RESET(hcrc); |
mbed_official | 237:f3da66175598 | 343 | |
mbed_official | 237:f3da66175598 | 344 | switch (hcrc->InputDataFormat) |
mbed_official | 237:f3da66175598 | 345 | { |
mbed_official | 237:f3da66175598 | 346 | case CRC_INPUTDATA_FORMAT_WORDS: |
mbed_official | 237:f3da66175598 | 347 | /* Enter 32-bit input data to the CRC calculator */ |
mbed_official | 237:f3da66175598 | 348 | for(index = 0; index < BufferLength; index++) |
mbed_official | 237:f3da66175598 | 349 | { |
mbed_official | 237:f3da66175598 | 350 | hcrc->Instance->DR = pBuffer[index]; |
mbed_official | 237:f3da66175598 | 351 | } |
mbed_official | 237:f3da66175598 | 352 | temp = hcrc->Instance->DR; |
mbed_official | 237:f3da66175598 | 353 | break; |
mbed_official | 237:f3da66175598 | 354 | |
mbed_official | 237:f3da66175598 | 355 | case CRC_INPUTDATA_FORMAT_BYTES: |
mbed_official | 237:f3da66175598 | 356 | /* Specific 8-bit input data handling */ |
mbed_official | 237:f3da66175598 | 357 | temp = CRC_Handle_8(hcrc, (uint8_t*)pBuffer, BufferLength); |
mbed_official | 237:f3da66175598 | 358 | break; |
mbed_official | 237:f3da66175598 | 359 | |
mbed_official | 237:f3da66175598 | 360 | case CRC_INPUTDATA_FORMAT_HALFWORDS: |
mbed_official | 237:f3da66175598 | 361 | /* Specific 16-bit input data handling */ |
mbed_official | 237:f3da66175598 | 362 | temp = CRC_Handle_16(hcrc, (uint16_t*)pBuffer, BufferLength); |
mbed_official | 237:f3da66175598 | 363 | break; |
mbed_official | 237:f3da66175598 | 364 | } |
mbed_official | 237:f3da66175598 | 365 | |
mbed_official | 237:f3da66175598 | 366 | /* Change CRC peripheral state */ |
mbed_official | 237:f3da66175598 | 367 | hcrc->State = HAL_CRC_STATE_READY; |
mbed_official | 237:f3da66175598 | 368 | |
mbed_official | 237:f3da66175598 | 369 | /* Process unlocked */ |
mbed_official | 237:f3da66175598 | 370 | __HAL_UNLOCK(hcrc); |
mbed_official | 237:f3da66175598 | 371 | |
mbed_official | 237:f3da66175598 | 372 | /* Return the CRC computed value */ |
mbed_official | 237:f3da66175598 | 373 | return temp; |
mbed_official | 237:f3da66175598 | 374 | } |
mbed_official | 237:f3da66175598 | 375 | |
mbed_official | 237:f3da66175598 | 376 | |
mbed_official | 237:f3da66175598 | 377 | |
mbed_official | 237:f3da66175598 | 378 | /** |
mbed_official | 237:f3da66175598 | 379 | * @brief Enter 8-bit input data to the CRC calculator. |
mbed_official | 237:f3da66175598 | 380 | * Specific data handling to optimize processing time. |
mbed_official | 237:f3da66175598 | 381 | * @param hcrc: CRC handle |
mbed_official | 237:f3da66175598 | 382 | * @param pBuffer: pointer to the input data buffer |
mbed_official | 237:f3da66175598 | 383 | * @param BufferLength: input data buffer length |
mbed_official | 237:f3da66175598 | 384 | * @retval uint32_t CRC (returned value LSBs for CRC shorter than 32 bits) |
mbed_official | 237:f3da66175598 | 385 | */ |
mbed_official | 237:f3da66175598 | 386 | static uint32_t CRC_Handle_8(CRC_HandleTypeDef *hcrc, uint8_t pBuffer[], uint32_t BufferLength) |
mbed_official | 237:f3da66175598 | 387 | { |
mbed_official | 237:f3da66175598 | 388 | uint32_t i = 0; /* input data buffer index */ |
mbed_official | 237:f3da66175598 | 389 | |
mbed_official | 237:f3da66175598 | 390 | /* Processing time optimization: 4 bytes are entered in a row with a single word write, |
mbed_official | 237:f3da66175598 | 391 | * last bytes must be carefully fed to the CRC calculator to ensure a correct type |
mbed_official | 237:f3da66175598 | 392 | * handling by the IP */ |
mbed_official | 237:f3da66175598 | 393 | for(i = 0; i < (BufferLength/4); i++) |
mbed_official | 237:f3da66175598 | 394 | { |
mbed_official | 237:f3da66175598 | 395 | hcrc->Instance->DR = (pBuffer[4*i]<<24) | (pBuffer[4*i+1]<<16) | (pBuffer[4*i+2]<<8) | pBuffer[4*i+3]; |
mbed_official | 237:f3da66175598 | 396 | } |
mbed_official | 237:f3da66175598 | 397 | /* last bytes specific handling */ |
mbed_official | 237:f3da66175598 | 398 | if ((BufferLength%4) != 0) |
mbed_official | 237:f3da66175598 | 399 | { |
mbed_official | 237:f3da66175598 | 400 | if (BufferLength%4 == 1) |
mbed_official | 237:f3da66175598 | 401 | { |
mbed_official | 237:f3da66175598 | 402 | *(uint8_t*) (&hcrc->Instance->DR) = pBuffer[4*i]; |
mbed_official | 237:f3da66175598 | 403 | } |
mbed_official | 237:f3da66175598 | 404 | if (BufferLength%4 == 2) |
mbed_official | 237:f3da66175598 | 405 | { |
mbed_official | 237:f3da66175598 | 406 | *(uint16_t*) (&hcrc->Instance->DR) = (pBuffer[4*i]<<8) | pBuffer[4*i+1]; |
mbed_official | 237:f3da66175598 | 407 | } |
mbed_official | 237:f3da66175598 | 408 | if (BufferLength%4 == 3) |
mbed_official | 237:f3da66175598 | 409 | { |
mbed_official | 237:f3da66175598 | 410 | *(uint16_t*) (&hcrc->Instance->DR) = (pBuffer[4*i]<<8) | pBuffer[4*i+1]; |
mbed_official | 237:f3da66175598 | 411 | *(uint8_t*) (&hcrc->Instance->DR) = pBuffer[4*i+2]; |
mbed_official | 237:f3da66175598 | 412 | } |
mbed_official | 237:f3da66175598 | 413 | } |
mbed_official | 237:f3da66175598 | 414 | |
mbed_official | 237:f3da66175598 | 415 | /* Return the CRC computed value */ |
mbed_official | 237:f3da66175598 | 416 | return hcrc->Instance->DR; |
mbed_official | 237:f3da66175598 | 417 | } |
mbed_official | 237:f3da66175598 | 418 | |
mbed_official | 237:f3da66175598 | 419 | |
mbed_official | 237:f3da66175598 | 420 | |
mbed_official | 237:f3da66175598 | 421 | /** |
mbed_official | 237:f3da66175598 | 422 | * @brief Enter 16-bit input data to the CRC calculator. |
mbed_official | 237:f3da66175598 | 423 | * Specific data handling to optimize processing time. |
mbed_official | 237:f3da66175598 | 424 | * @param hcrc: CRC handle |
mbed_official | 237:f3da66175598 | 425 | * @param pBuffer: pointer to the input data buffer |
mbed_official | 237:f3da66175598 | 426 | * @param BufferLength: input data buffer length |
mbed_official | 237:f3da66175598 | 427 | * @retval uint32_t CRC (returned value LSBs for CRC shorter than 32 bits) |
mbed_official | 237:f3da66175598 | 428 | */ |
mbed_official | 237:f3da66175598 | 429 | static uint32_t CRC_Handle_16(CRC_HandleTypeDef *hcrc, uint16_t pBuffer[], uint32_t BufferLength) |
mbed_official | 237:f3da66175598 | 430 | { |
mbed_official | 237:f3da66175598 | 431 | uint32_t i = 0; /* input data buffer index */ |
mbed_official | 237:f3da66175598 | 432 | |
mbed_official | 237:f3da66175598 | 433 | /* Processing time optimization: 2 HalfWords are entered in a row with a single word write, |
mbed_official | 237:f3da66175598 | 434 | * in case of odd length, last HalfWord must be carefully fed to the CRC calculator to ensure |
mbed_official | 237:f3da66175598 | 435 | * a correct type handling by the IP */ |
mbed_official | 237:f3da66175598 | 436 | for(i = 0; i < (BufferLength/2); i++) |
mbed_official | 237:f3da66175598 | 437 | { |
mbed_official | 237:f3da66175598 | 438 | hcrc->Instance->DR = (pBuffer[2*i]<<16) | pBuffer[2*i+1]; |
mbed_official | 237:f3da66175598 | 439 | } |
mbed_official | 237:f3da66175598 | 440 | if ((BufferLength%2) != 0) |
mbed_official | 237:f3da66175598 | 441 | { |
mbed_official | 237:f3da66175598 | 442 | *(uint16_t*) (&hcrc->Instance->DR) = pBuffer[2*i]; |
mbed_official | 237:f3da66175598 | 443 | } |
mbed_official | 237:f3da66175598 | 444 | |
mbed_official | 237:f3da66175598 | 445 | /* Return the CRC computed value */ |
mbed_official | 237:f3da66175598 | 446 | return hcrc->Instance->DR; |
mbed_official | 237:f3da66175598 | 447 | } |
mbed_official | 237:f3da66175598 | 448 | |
mbed_official | 237:f3da66175598 | 449 | /** |
mbed_official | 237:f3da66175598 | 450 | * @} |
mbed_official | 237:f3da66175598 | 451 | */ |
mbed_official | 237:f3da66175598 | 452 | |
mbed_official | 237:f3da66175598 | 453 | /** @defgroup HAL_CRC_Group3 Peripheral State functions |
mbed_official | 237:f3da66175598 | 454 | * @brief Peripheral State functions. |
mbed_official | 237:f3da66175598 | 455 | * |
mbed_official | 237:f3da66175598 | 456 | @verbatim |
mbed_official | 237:f3da66175598 | 457 | =============================================================================== |
mbed_official | 237:f3da66175598 | 458 | ##### Peripheral State functions ##### |
mbed_official | 237:f3da66175598 | 459 | =============================================================================== |
mbed_official | 237:f3da66175598 | 460 | [..] |
mbed_official | 237:f3da66175598 | 461 | This subsection permits to get in run-time the status of the peripheral |
mbed_official | 237:f3da66175598 | 462 | and the data flow. |
mbed_official | 237:f3da66175598 | 463 | |
mbed_official | 237:f3da66175598 | 464 | @endverbatim |
mbed_official | 237:f3da66175598 | 465 | * @{ |
mbed_official | 237:f3da66175598 | 466 | */ |
mbed_official | 237:f3da66175598 | 467 | |
mbed_official | 237:f3da66175598 | 468 | /** |
mbed_official | 237:f3da66175598 | 469 | * @brief Returns the CRC state. |
mbed_official | 237:f3da66175598 | 470 | * @param hcrc: CRC handle |
mbed_official | 237:f3da66175598 | 471 | * @retval HAL state |
mbed_official | 237:f3da66175598 | 472 | */ |
mbed_official | 237:f3da66175598 | 473 | HAL_CRC_StateTypeDef HAL_CRC_GetState(CRC_HandleTypeDef *hcrc) |
mbed_official | 237:f3da66175598 | 474 | { |
mbed_official | 237:f3da66175598 | 475 | return hcrc->State; |
mbed_official | 237:f3da66175598 | 476 | } |
mbed_official | 237:f3da66175598 | 477 | |
mbed_official | 237:f3da66175598 | 478 | /** |
mbed_official | 237:f3da66175598 | 479 | * @} |
mbed_official | 237:f3da66175598 | 480 | */ |
mbed_official | 237:f3da66175598 | 481 | |
mbed_official | 237:f3da66175598 | 482 | /** |
mbed_official | 237:f3da66175598 | 483 | * @} |
mbed_official | 237:f3da66175598 | 484 | */ |
mbed_official | 237:f3da66175598 | 485 | |
mbed_official | 237:f3da66175598 | 486 | #endif /* HAL_CRC_MODULE_ENABLED */ |
mbed_official | 237:f3da66175598 | 487 | /** |
mbed_official | 237:f3da66175598 | 488 | * @} |
mbed_official | 237:f3da66175598 | 489 | */ |
mbed_official | 237:f3da66175598 | 490 | |
mbed_official | 237:f3da66175598 | 491 | /** |
mbed_official | 237:f3da66175598 | 492 | * @} |
mbed_official | 237:f3da66175598 | 493 | */ |
mbed_official | 237:f3da66175598 | 494 | |
mbed_official | 237:f3da66175598 | 495 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |