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targets/cmsis/TARGET_STM/TARGET_STM32F0/stm32f0xx_hal_crc.c@392:2b59412bb664, 2014-11-07 (annotated)
- Committer:
- mbed_official
- Date:
- Fri Nov 07 08:15:08 2014 +0000
- Revision:
- 392:2b59412bb664
- Parent:
- targets/cmsis/TARGET_STM/TARGET_NUCLEO_F091RC/stm32f0xx_hal_crc.c@340:28d1f895c6fe
- Child:
- 441:d2c15dda23c1
Synchronized with git revision eec0be05cd92349bee83c65f9e1302b25b5badf4
Full URL: https://github.com/mbedmicro/mbed/commit/eec0be05cd92349bee83c65f9e1302b25b5badf4/
Targets: STM32F0 - Factorisation of NUCLEO_F030R8/F072RB/F091RC cmsis folders
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 340:28d1f895c6fe | 1 | /** |
mbed_official | 340:28d1f895c6fe | 2 | ****************************************************************************** |
mbed_official | 340:28d1f895c6fe | 3 | * @file stm32f0xx_hal_crc.c |
mbed_official | 340:28d1f895c6fe | 4 | * @author MCD Application Team |
mbed_official | 340:28d1f895c6fe | 5 | * @version V1.1.0 |
mbed_official | 340:28d1f895c6fe | 6 | * @date 03-Oct-2014 |
mbed_official | 340:28d1f895c6fe | 7 | * @brief CRC HAL module driver. |
mbed_official | 340:28d1f895c6fe | 8 | * This file provides firmware functions to manage the following |
mbed_official | 340:28d1f895c6fe | 9 | * functionalities of the Cyclic Redundancy Check (CRC) peripheral: |
mbed_official | 340:28d1f895c6fe | 10 | * + Initialization and de-initialization functions |
mbed_official | 340:28d1f895c6fe | 11 | * + Peripheral Control functions |
mbed_official | 340:28d1f895c6fe | 12 | * + Peripheral State functions |
mbed_official | 340:28d1f895c6fe | 13 | * |
mbed_official | 340:28d1f895c6fe | 14 | @verbatim |
mbed_official | 340:28d1f895c6fe | 15 | =============================================================================== |
mbed_official | 340:28d1f895c6fe | 16 | ##### How to use this driver ##### |
mbed_official | 340:28d1f895c6fe | 17 | =============================================================================== |
mbed_official | 340:28d1f895c6fe | 18 | [..] |
mbed_official | 340:28d1f895c6fe | 19 | (#) Enable CRC AHB clock using __CRC_CLK_ENABLE(); |
mbed_official | 340:28d1f895c6fe | 20 | (#) Initialize CRC calculator |
mbed_official | 340:28d1f895c6fe | 21 | (++)specify generating polynomial (IP default or non-default one) |
mbed_official | 340:28d1f895c6fe | 22 | (++)specify initialization value (IP default or non-default one) |
mbed_official | 340:28d1f895c6fe | 23 | (++)specify input data format |
mbed_official | 340:28d1f895c6fe | 24 | (++)specify input or output data inversion mode if any |
mbed_official | 340:28d1f895c6fe | 25 | (#) Use HAL_CRC_Accumulate() function to compute the CRC value of the |
mbed_official | 340:28d1f895c6fe | 26 | input data buffer starting with the previously computed CRC as |
mbed_official | 340:28d1f895c6fe | 27 | initialization value |
mbed_official | 340:28d1f895c6fe | 28 | (#) Use HAL_CRC_Calculate() function to compute the CRC value of the |
mbed_official | 340:28d1f895c6fe | 29 | input data buffer starting with the defined initialization value |
mbed_official | 340:28d1f895c6fe | 30 | (default or non-default) to initiate CRC calculation |
mbed_official | 340:28d1f895c6fe | 31 | |
mbed_official | 340:28d1f895c6fe | 32 | @endverbatim |
mbed_official | 340:28d1f895c6fe | 33 | ****************************************************************************** |
mbed_official | 340:28d1f895c6fe | 34 | * @attention |
mbed_official | 340:28d1f895c6fe | 35 | * |
mbed_official | 340:28d1f895c6fe | 36 | * <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2> |
mbed_official | 340:28d1f895c6fe | 37 | * |
mbed_official | 340:28d1f895c6fe | 38 | * Redistribution and use in source and binary forms, with or without modification, |
mbed_official | 340:28d1f895c6fe | 39 | * are permitted provided that the following conditions are met: |
mbed_official | 340:28d1f895c6fe | 40 | * 1. Redistributions of source code must retain the above copyright notice, |
mbed_official | 340:28d1f895c6fe | 41 | * this list of conditions and the following disclaimer. |
mbed_official | 340:28d1f895c6fe | 42 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
mbed_official | 340:28d1f895c6fe | 43 | * this list of conditions and the following disclaimer in the documentation |
mbed_official | 340:28d1f895c6fe | 44 | * and/or other materials provided with the distribution. |
mbed_official | 340:28d1f895c6fe | 45 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
mbed_official | 340:28d1f895c6fe | 46 | * may be used to endorse or promote products derived from this software |
mbed_official | 340:28d1f895c6fe | 47 | * without specific prior written permission. |
mbed_official | 340:28d1f895c6fe | 48 | * |
mbed_official | 340:28d1f895c6fe | 49 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
mbed_official | 340:28d1f895c6fe | 50 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
mbed_official | 340:28d1f895c6fe | 51 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
mbed_official | 340:28d1f895c6fe | 52 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
mbed_official | 340:28d1f895c6fe | 53 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
mbed_official | 340:28d1f895c6fe | 54 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
mbed_official | 340:28d1f895c6fe | 55 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
mbed_official | 340:28d1f895c6fe | 56 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
mbed_official | 340:28d1f895c6fe | 57 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
mbed_official | 340:28d1f895c6fe | 58 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
mbed_official | 340:28d1f895c6fe | 59 | * |
mbed_official | 340:28d1f895c6fe | 60 | ****************************************************************************** |
mbed_official | 340:28d1f895c6fe | 61 | */ |
mbed_official | 340:28d1f895c6fe | 62 | |
mbed_official | 340:28d1f895c6fe | 63 | /* Includes ------------------------------------------------------------------*/ |
mbed_official | 340:28d1f895c6fe | 64 | #include "stm32f0xx_hal.h" |
mbed_official | 340:28d1f895c6fe | 65 | |
mbed_official | 340:28d1f895c6fe | 66 | /** @addtogroup STM32F0xx_HAL_Driver |
mbed_official | 340:28d1f895c6fe | 67 | * @{ |
mbed_official | 340:28d1f895c6fe | 68 | */ |
mbed_official | 340:28d1f895c6fe | 69 | |
mbed_official | 340:28d1f895c6fe | 70 | /** @defgroup CRC CRC HAL module driver |
mbed_official | 340:28d1f895c6fe | 71 | * @brief CRC HAL module driver. |
mbed_official | 340:28d1f895c6fe | 72 | * @{ |
mbed_official | 340:28d1f895c6fe | 73 | */ |
mbed_official | 340:28d1f895c6fe | 74 | |
mbed_official | 340:28d1f895c6fe | 75 | #ifdef HAL_CRC_MODULE_ENABLED |
mbed_official | 340:28d1f895c6fe | 76 | |
mbed_official | 340:28d1f895c6fe | 77 | /* Private typedef -----------------------------------------------------------*/ |
mbed_official | 340:28d1f895c6fe | 78 | /* Private define ------------------------------------------------------------*/ |
mbed_official | 340:28d1f895c6fe | 79 | /* Private macro -------------------------------------------------------------*/ |
mbed_official | 340:28d1f895c6fe | 80 | /* Private variables ---------------------------------------------------------*/ |
mbed_official | 340:28d1f895c6fe | 81 | /* Private function prototypes -----------------------------------------------*/ |
mbed_official | 340:28d1f895c6fe | 82 | /** @defgroup CRC_Private_Functions CRC Private Functions |
mbed_official | 340:28d1f895c6fe | 83 | * @{ |
mbed_official | 340:28d1f895c6fe | 84 | */ |
mbed_official | 340:28d1f895c6fe | 85 | static uint32_t CRC_Handle_8(CRC_HandleTypeDef *hcrc, uint8_t pBuffer[], uint32_t BufferLength); |
mbed_official | 340:28d1f895c6fe | 86 | static uint32_t CRC_Handle_16(CRC_HandleTypeDef *hcrc, uint16_t pBuffer[], uint32_t BufferLength); |
mbed_official | 340:28d1f895c6fe | 87 | /** |
mbed_official | 340:28d1f895c6fe | 88 | * @} |
mbed_official | 340:28d1f895c6fe | 89 | */ |
mbed_official | 340:28d1f895c6fe | 90 | |
mbed_official | 340:28d1f895c6fe | 91 | /* Exported functions ---------------------------------------------------------*/ |
mbed_official | 340:28d1f895c6fe | 92 | /** @defgroup CRC_Exported_Functions CRC Exported Functions |
mbed_official | 340:28d1f895c6fe | 93 | * @{ |
mbed_official | 340:28d1f895c6fe | 94 | */ |
mbed_official | 340:28d1f895c6fe | 95 | |
mbed_official | 340:28d1f895c6fe | 96 | /** @defgroup CRC_Exported_Functions_Group1 Initialization/de-initialization functions |
mbed_official | 340:28d1f895c6fe | 97 | * @brief Initialization and Configuration functions. |
mbed_official | 340:28d1f895c6fe | 98 | * |
mbed_official | 340:28d1f895c6fe | 99 | @verbatim |
mbed_official | 340:28d1f895c6fe | 100 | =============================================================================== |
mbed_official | 340:28d1f895c6fe | 101 | ##### Initialization and Configuration functions ##### |
mbed_official | 340:28d1f895c6fe | 102 | =============================================================================== |
mbed_official | 340:28d1f895c6fe | 103 | [..] This section provides functions allowing to: |
mbed_official | 340:28d1f895c6fe | 104 | (+) Initialize the CRC according to the specified parameters |
mbed_official | 340:28d1f895c6fe | 105 | in the CRC_InitTypeDef and create the associated handle |
mbed_official | 340:28d1f895c6fe | 106 | (+) DeInitialize the CRC peripheral |
mbed_official | 340:28d1f895c6fe | 107 | (+) Initialize the CRC MSP |
mbed_official | 340:28d1f895c6fe | 108 | (+) DeInitialize CRC MSP |
mbed_official | 340:28d1f895c6fe | 109 | |
mbed_official | 340:28d1f895c6fe | 110 | @endverbatim |
mbed_official | 340:28d1f895c6fe | 111 | * @{ |
mbed_official | 340:28d1f895c6fe | 112 | */ |
mbed_official | 340:28d1f895c6fe | 113 | |
mbed_official | 340:28d1f895c6fe | 114 | /** |
mbed_official | 340:28d1f895c6fe | 115 | * @brief Initializes the CRC according to the specified |
mbed_official | 340:28d1f895c6fe | 116 | * parameters in the CRC_InitTypeDef and creates the associated handle. |
mbed_official | 340:28d1f895c6fe | 117 | * @param hcrc: CRC handle |
mbed_official | 340:28d1f895c6fe | 118 | * @retval HAL status |
mbed_official | 340:28d1f895c6fe | 119 | */ |
mbed_official | 340:28d1f895c6fe | 120 | HAL_StatusTypeDef HAL_CRC_Init(CRC_HandleTypeDef *hcrc) |
mbed_official | 340:28d1f895c6fe | 121 | { |
mbed_official | 340:28d1f895c6fe | 122 | /* Check the CRC handle allocation */ |
mbed_official | 340:28d1f895c6fe | 123 | if(hcrc == HAL_NULL) |
mbed_official | 340:28d1f895c6fe | 124 | { |
mbed_official | 340:28d1f895c6fe | 125 | return HAL_ERROR; |
mbed_official | 340:28d1f895c6fe | 126 | } |
mbed_official | 340:28d1f895c6fe | 127 | |
mbed_official | 340:28d1f895c6fe | 128 | /* Check the parameters */ |
mbed_official | 340:28d1f895c6fe | 129 | assert_param(IS_CRC_ALL_INSTANCE(hcrc->Instance)); |
mbed_official | 340:28d1f895c6fe | 130 | |
mbed_official | 340:28d1f895c6fe | 131 | if(hcrc->State == HAL_CRC_STATE_RESET) |
mbed_official | 340:28d1f895c6fe | 132 | { |
mbed_official | 340:28d1f895c6fe | 133 | /* Init the low level hardware */ |
mbed_official | 340:28d1f895c6fe | 134 | HAL_CRC_MspInit(hcrc); |
mbed_official | 340:28d1f895c6fe | 135 | } |
mbed_official | 340:28d1f895c6fe | 136 | |
mbed_official | 340:28d1f895c6fe | 137 | hcrc->State = HAL_CRC_STATE_BUSY; |
mbed_official | 340:28d1f895c6fe | 138 | |
mbed_official | 340:28d1f895c6fe | 139 | /* Extended initialization: if programmable polynomial feature is |
mbed_official | 340:28d1f895c6fe | 140 | applicable to device, set default or non-default generating |
mbed_official | 340:28d1f895c6fe | 141 | polynomial according to hcrc->Init parameters. |
mbed_official | 340:28d1f895c6fe | 142 | If feature is non-applicable to device in use, HAL_CRCEx_Init straight |
mbed_official | 340:28d1f895c6fe | 143 | away reports HAL_OK. */ |
mbed_official | 340:28d1f895c6fe | 144 | if (HAL_CRCEx_Init(hcrc) != HAL_OK) |
mbed_official | 340:28d1f895c6fe | 145 | { |
mbed_official | 340:28d1f895c6fe | 146 | return HAL_ERROR; |
mbed_official | 340:28d1f895c6fe | 147 | } |
mbed_official | 340:28d1f895c6fe | 148 | |
mbed_official | 340:28d1f895c6fe | 149 | /* check whether or not non-default CRC initial value has been |
mbed_official | 340:28d1f895c6fe | 150 | * picked up by user */ |
mbed_official | 340:28d1f895c6fe | 151 | assert_param(IS_DEFAULT_INIT_VALUE(hcrc->Init.DefaultInitValueUse)); |
mbed_official | 340:28d1f895c6fe | 152 | if (hcrc->Init.DefaultInitValueUse == DEFAULT_INIT_VALUE_ENABLE) |
mbed_official | 340:28d1f895c6fe | 153 | { |
mbed_official | 340:28d1f895c6fe | 154 | WRITE_REG(hcrc->Instance->INIT, DEFAULT_CRC_INITVALUE); |
mbed_official | 340:28d1f895c6fe | 155 | } |
mbed_official | 340:28d1f895c6fe | 156 | else |
mbed_official | 340:28d1f895c6fe | 157 | { |
mbed_official | 340:28d1f895c6fe | 158 | WRITE_REG(hcrc->Instance->INIT, hcrc->Init.InitValue); |
mbed_official | 340:28d1f895c6fe | 159 | } |
mbed_official | 340:28d1f895c6fe | 160 | |
mbed_official | 340:28d1f895c6fe | 161 | |
mbed_official | 340:28d1f895c6fe | 162 | /* set input data inversion mode */ |
mbed_official | 340:28d1f895c6fe | 163 | assert_param(IS_CRC_INPUTDATA_INVERSION_MODE(hcrc->Init.InputDataInversionMode)); |
mbed_official | 340:28d1f895c6fe | 164 | MODIFY_REG(hcrc->Instance->CR, CRC_CR_REV_IN, hcrc->Init.InputDataInversionMode); |
mbed_official | 340:28d1f895c6fe | 165 | |
mbed_official | 340:28d1f895c6fe | 166 | /* set output data inversion mode */ |
mbed_official | 340:28d1f895c6fe | 167 | assert_param(IS_CRC_OUTPUTDATA_INVERSION_MODE(hcrc->Init.OutputDataInversionMode)); |
mbed_official | 340:28d1f895c6fe | 168 | MODIFY_REG(hcrc->Instance->CR, CRC_CR_REV_OUT, hcrc->Init.OutputDataInversionMode); |
mbed_official | 340:28d1f895c6fe | 169 | |
mbed_official | 340:28d1f895c6fe | 170 | /* makes sure the input data format (bytes, halfwords or words stream) |
mbed_official | 340:28d1f895c6fe | 171 | * is properly specified by user */ |
mbed_official | 340:28d1f895c6fe | 172 | assert_param(IS_CRC_INPUTDATA_FORMAT(hcrc->InputDataFormat)); |
mbed_official | 340:28d1f895c6fe | 173 | |
mbed_official | 340:28d1f895c6fe | 174 | /* Change CRC peripheral state */ |
mbed_official | 340:28d1f895c6fe | 175 | hcrc->State = HAL_CRC_STATE_READY; |
mbed_official | 340:28d1f895c6fe | 176 | |
mbed_official | 340:28d1f895c6fe | 177 | /* Return function status */ |
mbed_official | 340:28d1f895c6fe | 178 | return HAL_OK; |
mbed_official | 340:28d1f895c6fe | 179 | } |
mbed_official | 340:28d1f895c6fe | 180 | |
mbed_official | 340:28d1f895c6fe | 181 | /** |
mbed_official | 340:28d1f895c6fe | 182 | * @brief DeInitializes the CRC peripheral. |
mbed_official | 340:28d1f895c6fe | 183 | * @param hcrc: CRC handle |
mbed_official | 340:28d1f895c6fe | 184 | * @retval HAL status |
mbed_official | 340:28d1f895c6fe | 185 | */ |
mbed_official | 340:28d1f895c6fe | 186 | HAL_StatusTypeDef HAL_CRC_DeInit(CRC_HandleTypeDef *hcrc) |
mbed_official | 340:28d1f895c6fe | 187 | { |
mbed_official | 340:28d1f895c6fe | 188 | /* Check the CRC handle allocation */ |
mbed_official | 340:28d1f895c6fe | 189 | if(hcrc == HAL_NULL) |
mbed_official | 340:28d1f895c6fe | 190 | { |
mbed_official | 340:28d1f895c6fe | 191 | return HAL_ERROR; |
mbed_official | 340:28d1f895c6fe | 192 | } |
mbed_official | 340:28d1f895c6fe | 193 | |
mbed_official | 340:28d1f895c6fe | 194 | /* Check the parameters */ |
mbed_official | 340:28d1f895c6fe | 195 | assert_param(IS_CRC_ALL_INSTANCE(hcrc->Instance)); |
mbed_official | 340:28d1f895c6fe | 196 | |
mbed_official | 340:28d1f895c6fe | 197 | /* Check the CRC peripheral state */ |
mbed_official | 340:28d1f895c6fe | 198 | if(hcrc->State == HAL_CRC_STATE_BUSY) |
mbed_official | 340:28d1f895c6fe | 199 | { |
mbed_official | 340:28d1f895c6fe | 200 | return HAL_BUSY; |
mbed_official | 340:28d1f895c6fe | 201 | } |
mbed_official | 340:28d1f895c6fe | 202 | |
mbed_official | 340:28d1f895c6fe | 203 | /* Change CRC peripheral state */ |
mbed_official | 340:28d1f895c6fe | 204 | hcrc->State = HAL_CRC_STATE_BUSY; |
mbed_official | 340:28d1f895c6fe | 205 | |
mbed_official | 340:28d1f895c6fe | 206 | /* DeInit the low level hardware */ |
mbed_official | 340:28d1f895c6fe | 207 | HAL_CRC_MspDeInit(hcrc); |
mbed_official | 340:28d1f895c6fe | 208 | |
mbed_official | 340:28d1f895c6fe | 209 | /* Change CRC peripheral state */ |
mbed_official | 340:28d1f895c6fe | 210 | hcrc->State = HAL_CRC_STATE_RESET; |
mbed_official | 340:28d1f895c6fe | 211 | |
mbed_official | 340:28d1f895c6fe | 212 | /* Process unlocked */ |
mbed_official | 340:28d1f895c6fe | 213 | __HAL_UNLOCK(hcrc); |
mbed_official | 340:28d1f895c6fe | 214 | |
mbed_official | 340:28d1f895c6fe | 215 | /* Return function status */ |
mbed_official | 340:28d1f895c6fe | 216 | return HAL_OK; |
mbed_official | 340:28d1f895c6fe | 217 | } |
mbed_official | 340:28d1f895c6fe | 218 | |
mbed_official | 340:28d1f895c6fe | 219 | /** |
mbed_official | 340:28d1f895c6fe | 220 | * @brief Initializes the CRC MSP. |
mbed_official | 340:28d1f895c6fe | 221 | * @param hcrc: CRC handle |
mbed_official | 340:28d1f895c6fe | 222 | * @retval None |
mbed_official | 340:28d1f895c6fe | 223 | */ |
mbed_official | 340:28d1f895c6fe | 224 | __weak void HAL_CRC_MspInit(CRC_HandleTypeDef *hcrc) |
mbed_official | 340:28d1f895c6fe | 225 | { |
mbed_official | 340:28d1f895c6fe | 226 | /* NOTE : This function should not be modified, when the callback is needed, |
mbed_official | 340:28d1f895c6fe | 227 | the HAL_CRC_MspInit can be implemented in the user file |
mbed_official | 340:28d1f895c6fe | 228 | */ |
mbed_official | 340:28d1f895c6fe | 229 | } |
mbed_official | 340:28d1f895c6fe | 230 | |
mbed_official | 340:28d1f895c6fe | 231 | /** |
mbed_official | 340:28d1f895c6fe | 232 | * @brief DeInitializes the CRC MSP. |
mbed_official | 340:28d1f895c6fe | 233 | * @param hcrc: CRC handle |
mbed_official | 340:28d1f895c6fe | 234 | * @retval None |
mbed_official | 340:28d1f895c6fe | 235 | */ |
mbed_official | 340:28d1f895c6fe | 236 | __weak void HAL_CRC_MspDeInit(CRC_HandleTypeDef *hcrc) |
mbed_official | 340:28d1f895c6fe | 237 | { |
mbed_official | 340:28d1f895c6fe | 238 | /* NOTE : This function should not be modified, when the callback is needed, |
mbed_official | 340:28d1f895c6fe | 239 | the HAL_CRC_MspDeInit can be implemented in the user file |
mbed_official | 340:28d1f895c6fe | 240 | */ |
mbed_official | 340:28d1f895c6fe | 241 | } |
mbed_official | 340:28d1f895c6fe | 242 | |
mbed_official | 340:28d1f895c6fe | 243 | /** |
mbed_official | 340:28d1f895c6fe | 244 | * @} |
mbed_official | 340:28d1f895c6fe | 245 | */ |
mbed_official | 340:28d1f895c6fe | 246 | |
mbed_official | 340:28d1f895c6fe | 247 | /** @defgroup CRC_Exported_Functions_Group2 Peripheral Control functions |
mbed_official | 340:28d1f895c6fe | 248 | * @brief management functions. |
mbed_official | 340:28d1f895c6fe | 249 | * |
mbed_official | 340:28d1f895c6fe | 250 | @verbatim |
mbed_official | 340:28d1f895c6fe | 251 | =============================================================================== |
mbed_official | 340:28d1f895c6fe | 252 | ##### Peripheral Control functions ##### |
mbed_official | 340:28d1f895c6fe | 253 | =============================================================================== |
mbed_official | 340:28d1f895c6fe | 254 | [..] This section provides functions allowing to: |
mbed_official | 340:28d1f895c6fe | 255 | (+) Compute the 7, 8, 16 or 32-bit CRC value of an 8, 16 or 32-bit data buffer |
mbed_official | 340:28d1f895c6fe | 256 | using combination of the previous CRC value and the new one. |
mbed_official | 340:28d1f895c6fe | 257 | |
mbed_official | 340:28d1f895c6fe | 258 | or |
mbed_official | 340:28d1f895c6fe | 259 | |
mbed_official | 340:28d1f895c6fe | 260 | (+) Compute the 7, 8, 16 or 32-bit CRC value of an 8, 16 or 32-bit data buffer |
mbed_official | 340:28d1f895c6fe | 261 | independently of the previous CRC value. |
mbed_official | 340:28d1f895c6fe | 262 | |
mbed_official | 340:28d1f895c6fe | 263 | @endverbatim |
mbed_official | 340:28d1f895c6fe | 264 | * @{ |
mbed_official | 340:28d1f895c6fe | 265 | */ |
mbed_official | 340:28d1f895c6fe | 266 | |
mbed_official | 340:28d1f895c6fe | 267 | /** |
mbed_official | 340:28d1f895c6fe | 268 | * @brief Compute the 7, 8, 16 or 32-bit CRC value of an 8, 16 or 32-bit data buffer |
mbed_official | 340:28d1f895c6fe | 269 | * starting with the previously computed CRC as initialization value. |
mbed_official | 340:28d1f895c6fe | 270 | * @param hcrc: CRC handle |
mbed_official | 340:28d1f895c6fe | 271 | * @param pBuffer: pointer to the input data buffer, exact input data format is |
mbed_official | 340:28d1f895c6fe | 272 | * provided by hcrc->InputDataFormat. |
mbed_official | 340:28d1f895c6fe | 273 | * @param BufferLength: input data buffer length |
mbed_official | 340:28d1f895c6fe | 274 | * @retval uint32_t CRC (returned value LSBs for CRC shorter than 32 bits) |
mbed_official | 340:28d1f895c6fe | 275 | */ |
mbed_official | 340:28d1f895c6fe | 276 | uint32_t HAL_CRC_Accumulate(CRC_HandleTypeDef *hcrc, uint32_t pBuffer[], uint32_t BufferLength) |
mbed_official | 340:28d1f895c6fe | 277 | { |
mbed_official | 340:28d1f895c6fe | 278 | uint32_t index = 0; /* CRC input data buffer index */ |
mbed_official | 340:28d1f895c6fe | 279 | uint32_t temp = 0; /* CRC output (read from hcrc->Instance->DR register) */ |
mbed_official | 340:28d1f895c6fe | 280 | |
mbed_official | 340:28d1f895c6fe | 281 | /* Process locked */ |
mbed_official | 340:28d1f895c6fe | 282 | __HAL_LOCK(hcrc); |
mbed_official | 340:28d1f895c6fe | 283 | |
mbed_official | 340:28d1f895c6fe | 284 | /* Change CRC peripheral state */ |
mbed_official | 340:28d1f895c6fe | 285 | hcrc->State = HAL_CRC_STATE_BUSY; |
mbed_official | 340:28d1f895c6fe | 286 | |
mbed_official | 340:28d1f895c6fe | 287 | switch (hcrc->InputDataFormat) |
mbed_official | 340:28d1f895c6fe | 288 | { |
mbed_official | 340:28d1f895c6fe | 289 | case CRC_INPUTDATA_FORMAT_WORDS: |
mbed_official | 340:28d1f895c6fe | 290 | /* Enter Data to the CRC calculator */ |
mbed_official | 340:28d1f895c6fe | 291 | for(index = 0; index < BufferLength; index++) |
mbed_official | 340:28d1f895c6fe | 292 | { |
mbed_official | 340:28d1f895c6fe | 293 | hcrc->Instance->DR = pBuffer[index]; |
mbed_official | 340:28d1f895c6fe | 294 | } |
mbed_official | 340:28d1f895c6fe | 295 | temp = hcrc->Instance->DR; |
mbed_official | 340:28d1f895c6fe | 296 | break; |
mbed_official | 340:28d1f895c6fe | 297 | |
mbed_official | 340:28d1f895c6fe | 298 | case CRC_INPUTDATA_FORMAT_BYTES: |
mbed_official | 340:28d1f895c6fe | 299 | temp = CRC_Handle_8(hcrc, (uint8_t*)pBuffer, BufferLength); |
mbed_official | 340:28d1f895c6fe | 300 | break; |
mbed_official | 340:28d1f895c6fe | 301 | |
mbed_official | 340:28d1f895c6fe | 302 | case CRC_INPUTDATA_FORMAT_HALFWORDS: |
mbed_official | 340:28d1f895c6fe | 303 | temp = CRC_Handle_16(hcrc, (uint16_t*)pBuffer, BufferLength); |
mbed_official | 340:28d1f895c6fe | 304 | break; |
mbed_official | 340:28d1f895c6fe | 305 | |
mbed_official | 340:28d1f895c6fe | 306 | default: |
mbed_official | 340:28d1f895c6fe | 307 | break; |
mbed_official | 340:28d1f895c6fe | 308 | } |
mbed_official | 340:28d1f895c6fe | 309 | |
mbed_official | 340:28d1f895c6fe | 310 | /* Change CRC peripheral state */ |
mbed_official | 340:28d1f895c6fe | 311 | hcrc->State = HAL_CRC_STATE_READY; |
mbed_official | 340:28d1f895c6fe | 312 | |
mbed_official | 340:28d1f895c6fe | 313 | /* Process unlocked */ |
mbed_official | 340:28d1f895c6fe | 314 | __HAL_UNLOCK(hcrc); |
mbed_official | 340:28d1f895c6fe | 315 | |
mbed_official | 340:28d1f895c6fe | 316 | /* Return the CRC computed value */ |
mbed_official | 340:28d1f895c6fe | 317 | return temp; |
mbed_official | 340:28d1f895c6fe | 318 | } |
mbed_official | 340:28d1f895c6fe | 319 | |
mbed_official | 340:28d1f895c6fe | 320 | |
mbed_official | 340:28d1f895c6fe | 321 | /** |
mbed_official | 340:28d1f895c6fe | 322 | * @brief Compute the 7, 8, 16 or 32-bit CRC value of an 8, 16 or 32-bit data buffer |
mbed_official | 340:28d1f895c6fe | 323 | * starting with hcrc->Instance->INIT as initialization value. |
mbed_official | 340:28d1f895c6fe | 324 | * @param hcrc: CRC handle |
mbed_official | 340:28d1f895c6fe | 325 | * @param pBuffer: pointer to the input data buffer, exact input data format is |
mbed_official | 340:28d1f895c6fe | 326 | * provided by hcrc->InputDataFormat. |
mbed_official | 340:28d1f895c6fe | 327 | * @param BufferLength: input data buffer length |
mbed_official | 340:28d1f895c6fe | 328 | * @retval uint32_t CRC (returned value LSBs for CRC shorter than 32 bits) |
mbed_official | 340:28d1f895c6fe | 329 | */ |
mbed_official | 340:28d1f895c6fe | 330 | uint32_t HAL_CRC_Calculate(CRC_HandleTypeDef *hcrc, uint32_t pBuffer[], uint32_t BufferLength) |
mbed_official | 340:28d1f895c6fe | 331 | { |
mbed_official | 340:28d1f895c6fe | 332 | uint32_t index = 0; /* CRC input data buffer index */ |
mbed_official | 340:28d1f895c6fe | 333 | uint32_t temp = 0; /* CRC output (read from hcrc->Instance->DR register) */ |
mbed_official | 340:28d1f895c6fe | 334 | |
mbed_official | 340:28d1f895c6fe | 335 | /* Process locked */ |
mbed_official | 340:28d1f895c6fe | 336 | __HAL_LOCK(hcrc); |
mbed_official | 340:28d1f895c6fe | 337 | |
mbed_official | 340:28d1f895c6fe | 338 | /* Change CRC peripheral state */ |
mbed_official | 340:28d1f895c6fe | 339 | hcrc->State = HAL_CRC_STATE_BUSY; |
mbed_official | 340:28d1f895c6fe | 340 | |
mbed_official | 340:28d1f895c6fe | 341 | /* Reset CRC Calculation Unit (hcrc->Instance->INIT is |
mbed_official | 340:28d1f895c6fe | 342 | * written in hcrc->Instance->DR) */ |
mbed_official | 340:28d1f895c6fe | 343 | __HAL_CRC_DR_RESET(hcrc); |
mbed_official | 340:28d1f895c6fe | 344 | |
mbed_official | 340:28d1f895c6fe | 345 | switch (hcrc->InputDataFormat) |
mbed_official | 340:28d1f895c6fe | 346 | { |
mbed_official | 340:28d1f895c6fe | 347 | case CRC_INPUTDATA_FORMAT_WORDS: |
mbed_official | 340:28d1f895c6fe | 348 | /* Enter 32-bit input data to the CRC calculator */ |
mbed_official | 340:28d1f895c6fe | 349 | for(index = 0; index < BufferLength; index++) |
mbed_official | 340:28d1f895c6fe | 350 | { |
mbed_official | 340:28d1f895c6fe | 351 | hcrc->Instance->DR = pBuffer[index]; |
mbed_official | 340:28d1f895c6fe | 352 | } |
mbed_official | 340:28d1f895c6fe | 353 | temp = hcrc->Instance->DR; |
mbed_official | 340:28d1f895c6fe | 354 | break; |
mbed_official | 340:28d1f895c6fe | 355 | |
mbed_official | 340:28d1f895c6fe | 356 | case CRC_INPUTDATA_FORMAT_BYTES: |
mbed_official | 340:28d1f895c6fe | 357 | /* Specific 8-bit input data handling */ |
mbed_official | 340:28d1f895c6fe | 358 | temp = CRC_Handle_8(hcrc, (uint8_t*)pBuffer, BufferLength); |
mbed_official | 340:28d1f895c6fe | 359 | break; |
mbed_official | 340:28d1f895c6fe | 360 | |
mbed_official | 340:28d1f895c6fe | 361 | case CRC_INPUTDATA_FORMAT_HALFWORDS: |
mbed_official | 340:28d1f895c6fe | 362 | /* Specific 16-bit input data handling */ |
mbed_official | 340:28d1f895c6fe | 363 | temp = CRC_Handle_16(hcrc, (uint16_t*)pBuffer, BufferLength); |
mbed_official | 340:28d1f895c6fe | 364 | break; |
mbed_official | 340:28d1f895c6fe | 365 | |
mbed_official | 340:28d1f895c6fe | 366 | default: |
mbed_official | 340:28d1f895c6fe | 367 | break; |
mbed_official | 340:28d1f895c6fe | 368 | } |
mbed_official | 340:28d1f895c6fe | 369 | |
mbed_official | 340:28d1f895c6fe | 370 | /* Change CRC peripheral state */ |
mbed_official | 340:28d1f895c6fe | 371 | hcrc->State = HAL_CRC_STATE_READY; |
mbed_official | 340:28d1f895c6fe | 372 | |
mbed_official | 340:28d1f895c6fe | 373 | /* Process unlocked */ |
mbed_official | 340:28d1f895c6fe | 374 | __HAL_UNLOCK(hcrc); |
mbed_official | 340:28d1f895c6fe | 375 | |
mbed_official | 340:28d1f895c6fe | 376 | /* Return the CRC computed value */ |
mbed_official | 340:28d1f895c6fe | 377 | return temp; |
mbed_official | 340:28d1f895c6fe | 378 | } |
mbed_official | 340:28d1f895c6fe | 379 | /** |
mbed_official | 340:28d1f895c6fe | 380 | * @} |
mbed_official | 340:28d1f895c6fe | 381 | */ |
mbed_official | 340:28d1f895c6fe | 382 | |
mbed_official | 340:28d1f895c6fe | 383 | /** @defgroup CRC_Exported_Functions_Group3 Peripheral State functions |
mbed_official | 340:28d1f895c6fe | 384 | * @brief Peripheral State functions. |
mbed_official | 340:28d1f895c6fe | 385 | * |
mbed_official | 340:28d1f895c6fe | 386 | @verbatim |
mbed_official | 340:28d1f895c6fe | 387 | =============================================================================== |
mbed_official | 340:28d1f895c6fe | 388 | ##### Peripheral State functions ##### |
mbed_official | 340:28d1f895c6fe | 389 | =============================================================================== |
mbed_official | 340:28d1f895c6fe | 390 | [..] |
mbed_official | 340:28d1f895c6fe | 391 | This subsection permits to get in run-time the status of the peripheral |
mbed_official | 340:28d1f895c6fe | 392 | and the data flow. |
mbed_official | 340:28d1f895c6fe | 393 | |
mbed_official | 340:28d1f895c6fe | 394 | @endverbatim |
mbed_official | 340:28d1f895c6fe | 395 | * @{ |
mbed_official | 340:28d1f895c6fe | 396 | */ |
mbed_official | 340:28d1f895c6fe | 397 | |
mbed_official | 340:28d1f895c6fe | 398 | /** |
mbed_official | 340:28d1f895c6fe | 399 | * @brief Returns the CRC state. |
mbed_official | 340:28d1f895c6fe | 400 | * @param hcrc: CRC handle |
mbed_official | 340:28d1f895c6fe | 401 | * @retval HAL state |
mbed_official | 340:28d1f895c6fe | 402 | */ |
mbed_official | 340:28d1f895c6fe | 403 | HAL_CRC_StateTypeDef HAL_CRC_GetState(CRC_HandleTypeDef *hcrc) |
mbed_official | 340:28d1f895c6fe | 404 | { |
mbed_official | 340:28d1f895c6fe | 405 | return hcrc->State; |
mbed_official | 340:28d1f895c6fe | 406 | } |
mbed_official | 340:28d1f895c6fe | 407 | |
mbed_official | 340:28d1f895c6fe | 408 | /** |
mbed_official | 340:28d1f895c6fe | 409 | * @} |
mbed_official | 340:28d1f895c6fe | 410 | */ |
mbed_official | 340:28d1f895c6fe | 411 | |
mbed_official | 340:28d1f895c6fe | 412 | /** |
mbed_official | 340:28d1f895c6fe | 413 | * @} |
mbed_official | 340:28d1f895c6fe | 414 | */ |
mbed_official | 340:28d1f895c6fe | 415 | |
mbed_official | 340:28d1f895c6fe | 416 | /** @addtogroup CRC_Private_Functions CRC Private Functions |
mbed_official | 340:28d1f895c6fe | 417 | * @{ |
mbed_official | 340:28d1f895c6fe | 418 | */ |
mbed_official | 340:28d1f895c6fe | 419 | /** |
mbed_official | 340:28d1f895c6fe | 420 | * @brief Enter 8-bit input data to the CRC calculator. |
mbed_official | 340:28d1f895c6fe | 421 | * Specific data handling to optimize processing time. |
mbed_official | 340:28d1f895c6fe | 422 | * @param hcrc: CRC handle |
mbed_official | 340:28d1f895c6fe | 423 | * @param pBuffer: pointer to the input data buffer |
mbed_official | 340:28d1f895c6fe | 424 | * @param BufferLength: input data buffer length |
mbed_official | 340:28d1f895c6fe | 425 | * @retval uint32_t CRC (returned value LSBs for CRC shorter than 32 bits) |
mbed_official | 340:28d1f895c6fe | 426 | */ |
mbed_official | 340:28d1f895c6fe | 427 | static uint32_t CRC_Handle_8(CRC_HandleTypeDef *hcrc, uint8_t pBuffer[], uint32_t BufferLength) |
mbed_official | 340:28d1f895c6fe | 428 | { |
mbed_official | 340:28d1f895c6fe | 429 | uint32_t i = 0; /* input data buffer index */ |
mbed_official | 340:28d1f895c6fe | 430 | |
mbed_official | 340:28d1f895c6fe | 431 | /* Processing time optimization: 4 bytes are entered in a row with a single word write, |
mbed_official | 340:28d1f895c6fe | 432 | * last bytes must be carefully fed to the CRC calculator to ensure a correct type |
mbed_official | 340:28d1f895c6fe | 433 | * handling by the IP */ |
mbed_official | 340:28d1f895c6fe | 434 | for(i = 0; i < (BufferLength/4); i++) |
mbed_official | 340:28d1f895c6fe | 435 | { |
mbed_official | 340:28d1f895c6fe | 436 | 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]; |
mbed_official | 340:28d1f895c6fe | 437 | } |
mbed_official | 340:28d1f895c6fe | 438 | /* last bytes specific handling */ |
mbed_official | 340:28d1f895c6fe | 439 | if ((BufferLength%4) != 0) |
mbed_official | 340:28d1f895c6fe | 440 | { |
mbed_official | 340:28d1f895c6fe | 441 | if (BufferLength%4 == 1) |
mbed_official | 340:28d1f895c6fe | 442 | { |
mbed_official | 340:28d1f895c6fe | 443 | *(uint8_t*) (&hcrc->Instance->DR) = pBuffer[4*i]; |
mbed_official | 340:28d1f895c6fe | 444 | } |
mbed_official | 340:28d1f895c6fe | 445 | if (BufferLength%4 == 2) |
mbed_official | 340:28d1f895c6fe | 446 | { |
mbed_official | 340:28d1f895c6fe | 447 | *(uint16_t*) (&hcrc->Instance->DR) = ((uint16_t)pBuffer[4*i]<<8) | (uint16_t)pBuffer[4*i+1]; |
mbed_official | 340:28d1f895c6fe | 448 | } |
mbed_official | 340:28d1f895c6fe | 449 | if (BufferLength%4 == 3) |
mbed_official | 340:28d1f895c6fe | 450 | { |
mbed_official | 340:28d1f895c6fe | 451 | *(uint16_t*) (&hcrc->Instance->DR) = ((uint16_t)pBuffer[4*i]<<8) | (uint16_t)pBuffer[4*i+1]; |
mbed_official | 340:28d1f895c6fe | 452 | *(uint8_t*) (&hcrc->Instance->DR) = pBuffer[4*i+2]; |
mbed_official | 340:28d1f895c6fe | 453 | } |
mbed_official | 340:28d1f895c6fe | 454 | } |
mbed_official | 340:28d1f895c6fe | 455 | |
mbed_official | 340:28d1f895c6fe | 456 | /* Return the CRC computed value */ |
mbed_official | 340:28d1f895c6fe | 457 | return hcrc->Instance->DR; |
mbed_official | 340:28d1f895c6fe | 458 | } |
mbed_official | 340:28d1f895c6fe | 459 | |
mbed_official | 340:28d1f895c6fe | 460 | |
mbed_official | 340:28d1f895c6fe | 461 | |
mbed_official | 340:28d1f895c6fe | 462 | /** |
mbed_official | 340:28d1f895c6fe | 463 | * @brief Enter 16-bit input data to the CRC calculator. |
mbed_official | 340:28d1f895c6fe | 464 | * Specific data handling to optimize processing time. |
mbed_official | 340:28d1f895c6fe | 465 | * @param hcrc: CRC handle |
mbed_official | 340:28d1f895c6fe | 466 | * @param pBuffer: pointer to the input data buffer |
mbed_official | 340:28d1f895c6fe | 467 | * @param BufferLength: input data buffer length |
mbed_official | 340:28d1f895c6fe | 468 | * @retval uint32_t CRC (returned value LSBs for CRC shorter than 32 bits) |
mbed_official | 340:28d1f895c6fe | 469 | */ |
mbed_official | 340:28d1f895c6fe | 470 | static uint32_t CRC_Handle_16(CRC_HandleTypeDef *hcrc, uint16_t pBuffer[], uint32_t BufferLength) |
mbed_official | 340:28d1f895c6fe | 471 | { |
mbed_official | 340:28d1f895c6fe | 472 | uint32_t i = 0; /* input data buffer index */ |
mbed_official | 340:28d1f895c6fe | 473 | |
mbed_official | 340:28d1f895c6fe | 474 | /* Processing time optimization: 2 HalfWords are entered in a row with a single word write, |
mbed_official | 340:28d1f895c6fe | 475 | * in case of odd length, last HalfWord must be carefully fed to the CRC calculator to ensure |
mbed_official | 340:28d1f895c6fe | 476 | * a correct type handling by the IP */ |
mbed_official | 340:28d1f895c6fe | 477 | for(i = 0; i < (BufferLength/2); i++) |
mbed_official | 340:28d1f895c6fe | 478 | { |
mbed_official | 340:28d1f895c6fe | 479 | hcrc->Instance->DR = (pBuffer[2*i]<<16) | pBuffer[2*i+1]; |
mbed_official | 340:28d1f895c6fe | 480 | } |
mbed_official | 340:28d1f895c6fe | 481 | if ((BufferLength%2) != 0) |
mbed_official | 340:28d1f895c6fe | 482 | { |
mbed_official | 340:28d1f895c6fe | 483 | *(uint16_t*) (&hcrc->Instance->DR) = pBuffer[2*i]; |
mbed_official | 340:28d1f895c6fe | 484 | } |
mbed_official | 340:28d1f895c6fe | 485 | |
mbed_official | 340:28d1f895c6fe | 486 | /* Return the CRC computed value */ |
mbed_official | 340:28d1f895c6fe | 487 | return hcrc->Instance->DR; |
mbed_official | 340:28d1f895c6fe | 488 | } |
mbed_official | 340:28d1f895c6fe | 489 | /** |
mbed_official | 340:28d1f895c6fe | 490 | * @} |
mbed_official | 340:28d1f895c6fe | 491 | */ |
mbed_official | 340:28d1f895c6fe | 492 | |
mbed_official | 340:28d1f895c6fe | 493 | /** |
mbed_official | 340:28d1f895c6fe | 494 | * @} |
mbed_official | 340:28d1f895c6fe | 495 | */ |
mbed_official | 340:28d1f895c6fe | 496 | |
mbed_official | 340:28d1f895c6fe | 497 | #endif /* HAL_CRC_MODULE_ENABLED */ |
mbed_official | 340:28d1f895c6fe | 498 | /** |
mbed_official | 340:28d1f895c6fe | 499 | * @} |
mbed_official | 340:28d1f895c6fe | 500 | */ |
mbed_official | 340:28d1f895c6fe | 501 | |
mbed_official | 340:28d1f895c6fe | 502 | /** |
mbed_official | 340:28d1f895c6fe | 503 | * @} |
mbed_official | 340:28d1f895c6fe | 504 | */ |
mbed_official | 340:28d1f895c6fe | 505 | |
mbed_official | 340:28d1f895c6fe | 506 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |