fix LPC812 PWM
Fork of mbed-dev by
targets/cmsis/TARGET_STM/TARGET_STM32F1/stm32f1xx_hal_crc.c@129:2e517c56bcfb, 2016-05-16 (annotated)
- Committer:
- nameless129
- Date:
- Mon May 16 16:50:30 2016 +0000
- Revision:
- 129:2e517c56bcfb
- Parent:
- 124:6a4a5b7d7324
PWM Fix:Duty 0%??H???????????????
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
bogdanm | 0:9b334a45a8ff | 1 | /** |
bogdanm | 0:9b334a45a8ff | 2 | ****************************************************************************** |
bogdanm | 0:9b334a45a8ff | 3 | * @file stm32f1xx_hal_crc.c |
bogdanm | 0:9b334a45a8ff | 4 | * @author MCD Application Team |
mbed_official | 124:6a4a5b7d7324 | 5 | * @version V1.0.4 |
mbed_official | 124:6a4a5b7d7324 | 6 | * @date 29-April-2016 |
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 | The CRC HAL driver can be used as follows: |
bogdanm | 0:9b334a45a8ff | 20 | |
bogdanm | 0:9b334a45a8ff | 21 | (#) Enable CRC AHB clock using __HAL_RCC_CRC_CLK_ENABLE(); |
bogdanm | 0:9b334a45a8ff | 22 | |
bogdanm | 0:9b334a45a8ff | 23 | (#) Use HAL_CRC_Accumulate() function to compute the CRC value of |
bogdanm | 0:9b334a45a8ff | 24 | a 32-bit data buffer using combination of the previous CRC value |
bogdanm | 0:9b334a45a8ff | 25 | and the new one. |
bogdanm | 0:9b334a45a8ff | 26 | |
bogdanm | 0:9b334a45a8ff | 27 | (#) Use HAL_CRC_Calculate() function to compute the CRC Value of |
bogdanm | 0:9b334a45a8ff | 28 | a new 32-bit data buffer. This function resets the CRC computation |
bogdanm | 0:9b334a45a8ff | 29 | unit before starting the computation to avoid getting wrong CRC values. |
bogdanm | 0:9b334a45a8ff | 30 | |
bogdanm | 0:9b334a45a8ff | 31 | @endverbatim |
bogdanm | 0:9b334a45a8ff | 32 | ****************************************************************************** |
bogdanm | 0:9b334a45a8ff | 33 | * @attention |
bogdanm | 0:9b334a45a8ff | 34 | * |
mbed_official | 124:6a4a5b7d7324 | 35 | * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2> |
bogdanm | 0:9b334a45a8ff | 36 | * |
bogdanm | 0:9b334a45a8ff | 37 | * Redistribution and use in source and binary forms, with or without modification, |
bogdanm | 0:9b334a45a8ff | 38 | * are permitted provided that the following conditions are met: |
bogdanm | 0:9b334a45a8ff | 39 | * 1. Redistributions of source code must retain the above copyright notice, |
bogdanm | 0:9b334a45a8ff | 40 | * this list of conditions and the following disclaimer. |
bogdanm | 0:9b334a45a8ff | 41 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
bogdanm | 0:9b334a45a8ff | 42 | * this list of conditions and the following disclaimer in the documentation |
bogdanm | 0:9b334a45a8ff | 43 | * and/or other materials provided with the distribution. |
bogdanm | 0:9b334a45a8ff | 44 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
bogdanm | 0:9b334a45a8ff | 45 | * may be used to endorse or promote products derived from this software |
bogdanm | 0:9b334a45a8ff | 46 | * without specific prior written permission. |
bogdanm | 0:9b334a45a8ff | 47 | * |
bogdanm | 0:9b334a45a8ff | 48 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
bogdanm | 0:9b334a45a8ff | 49 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
bogdanm | 0:9b334a45a8ff | 50 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
bogdanm | 0:9b334a45a8ff | 51 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
bogdanm | 0:9b334a45a8ff | 52 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
bogdanm | 0:9b334a45a8ff | 53 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
bogdanm | 0:9b334a45a8ff | 54 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
bogdanm | 0:9b334a45a8ff | 55 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
bogdanm | 0:9b334a45a8ff | 56 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
bogdanm | 0:9b334a45a8ff | 57 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
bogdanm | 0:9b334a45a8ff | 58 | * |
bogdanm | 0:9b334a45a8ff | 59 | ****************************************************************************** |
bogdanm | 0:9b334a45a8ff | 60 | */ |
bogdanm | 0:9b334a45a8ff | 61 | |
bogdanm | 0:9b334a45a8ff | 62 | /* Includes ------------------------------------------------------------------*/ |
bogdanm | 0:9b334a45a8ff | 63 | #include "stm32f1xx_hal.h" |
bogdanm | 0:9b334a45a8ff | 64 | |
bogdanm | 0:9b334a45a8ff | 65 | /** @addtogroup STM32F1xx_HAL_Driver |
bogdanm | 0:9b334a45a8ff | 66 | * @{ |
bogdanm | 0:9b334a45a8ff | 67 | */ |
bogdanm | 0:9b334a45a8ff | 68 | |
bogdanm | 0:9b334a45a8ff | 69 | /** @defgroup CRC CRC |
bogdanm | 0:9b334a45a8ff | 70 | * @brief CRC HAL module driver. |
bogdanm | 0:9b334a45a8ff | 71 | * @{ |
bogdanm | 0:9b334a45a8ff | 72 | */ |
bogdanm | 0:9b334a45a8ff | 73 | |
bogdanm | 0:9b334a45a8ff | 74 | #ifdef HAL_CRC_MODULE_ENABLED |
bogdanm | 0:9b334a45a8ff | 75 | |
bogdanm | 0:9b334a45a8ff | 76 | /* Private typedef -----------------------------------------------------------*/ |
bogdanm | 0:9b334a45a8ff | 77 | /* Private define ------------------------------------------------------------*/ |
bogdanm | 0:9b334a45a8ff | 78 | /* Private macro -------------------------------------------------------------*/ |
bogdanm | 0:9b334a45a8ff | 79 | /* Private variables ---------------------------------------------------------*/ |
bogdanm | 0:9b334a45a8ff | 80 | /* Private function prototypes -----------------------------------------------*/ |
bogdanm | 0:9b334a45a8ff | 81 | /* Private functions ---------------------------------------------------------*/ |
bogdanm | 0:9b334a45a8ff | 82 | |
bogdanm | 0:9b334a45a8ff | 83 | /** @defgroup CRC_Exported_Functions CRC Exported Functions |
bogdanm | 0:9b334a45a8ff | 84 | * @{ |
bogdanm | 0:9b334a45a8ff | 85 | */ |
bogdanm | 0:9b334a45a8ff | 86 | |
bogdanm | 0:9b334a45a8ff | 87 | /** @defgroup CRC_Exported_Functions_Group1 Initialization and de-initialization functions |
bogdanm | 0:9b334a45a8ff | 88 | * @brief Initialization and Configuration functions. |
bogdanm | 0:9b334a45a8ff | 89 | * |
bogdanm | 0:9b334a45a8ff | 90 | @verbatim |
bogdanm | 0:9b334a45a8ff | 91 | ============================================================================== |
bogdanm | 0:9b334a45a8ff | 92 | ##### Initialization and de-initialization functions ##### |
bogdanm | 0:9b334a45a8ff | 93 | ============================================================================== |
bogdanm | 0:9b334a45a8ff | 94 | [..] This section provides functions allowing to: |
bogdanm | 0:9b334a45a8ff | 95 | (+) Initialize the CRC according to the specified parameters |
bogdanm | 0:9b334a45a8ff | 96 | in the CRC_InitTypeDef and create the associated handle |
bogdanm | 0:9b334a45a8ff | 97 | (+) DeInitialize the CRC peripheral |
bogdanm | 0:9b334a45a8ff | 98 | (+) Initialize the CRC MSP |
bogdanm | 0:9b334a45a8ff | 99 | (+) DeInitialize CRC MSP |
bogdanm | 0:9b334a45a8ff | 100 | |
bogdanm | 0:9b334a45a8ff | 101 | @endverbatim |
bogdanm | 0:9b334a45a8ff | 102 | * @{ |
bogdanm | 0:9b334a45a8ff | 103 | */ |
bogdanm | 0:9b334a45a8ff | 104 | |
bogdanm | 0:9b334a45a8ff | 105 | /** |
bogdanm | 0:9b334a45a8ff | 106 | * @brief Initializes the CRC according to the specified |
bogdanm | 0:9b334a45a8ff | 107 | * parameters in the CRC_InitTypeDef and creates the associated handle. |
bogdanm | 0:9b334a45a8ff | 108 | * @param hcrc: pointer to a CRC_HandleTypeDef structure that contains |
bogdanm | 0:9b334a45a8ff | 109 | * the configuration information for CRC |
bogdanm | 0:9b334a45a8ff | 110 | * @retval HAL status |
bogdanm | 0:9b334a45a8ff | 111 | */ |
bogdanm | 0:9b334a45a8ff | 112 | HAL_StatusTypeDef HAL_CRC_Init(CRC_HandleTypeDef *hcrc) |
bogdanm | 0:9b334a45a8ff | 113 | { |
bogdanm | 0:9b334a45a8ff | 114 | /* Check the CRC handle allocation */ |
bogdanm | 0:9b334a45a8ff | 115 | if(hcrc == NULL) |
bogdanm | 0:9b334a45a8ff | 116 | { |
bogdanm | 0:9b334a45a8ff | 117 | return HAL_ERROR; |
bogdanm | 0:9b334a45a8ff | 118 | } |
bogdanm | 0:9b334a45a8ff | 119 | |
bogdanm | 0:9b334a45a8ff | 120 | /* Check the parameters */ |
bogdanm | 0:9b334a45a8ff | 121 | assert_param(IS_CRC_ALL_INSTANCE(hcrc->Instance)); |
bogdanm | 0:9b334a45a8ff | 122 | |
bogdanm | 0:9b334a45a8ff | 123 | if(hcrc->State == HAL_CRC_STATE_RESET) |
bogdanm | 0:9b334a45a8ff | 124 | { |
bogdanm | 0:9b334a45a8ff | 125 | /* Allocate lock resource and initialize it */ |
mbed_official | 124:6a4a5b7d7324 | 126 | hcrc->Lock = HAL_UNLOCKED; |
bogdanm | 0:9b334a45a8ff | 127 | |
bogdanm | 0:9b334a45a8ff | 128 | /* Init the low level hardware */ |
bogdanm | 0:9b334a45a8ff | 129 | HAL_CRC_MspInit(hcrc); |
bogdanm | 0:9b334a45a8ff | 130 | } |
bogdanm | 0:9b334a45a8ff | 131 | |
bogdanm | 0:9b334a45a8ff | 132 | /* Change CRC peripheral state */ |
bogdanm | 0:9b334a45a8ff | 133 | hcrc->State = HAL_CRC_STATE_READY; |
bogdanm | 0:9b334a45a8ff | 134 | |
bogdanm | 0:9b334a45a8ff | 135 | /* Return function status */ |
bogdanm | 0:9b334a45a8ff | 136 | return HAL_OK; |
bogdanm | 0:9b334a45a8ff | 137 | } |
bogdanm | 0:9b334a45a8ff | 138 | |
bogdanm | 0:9b334a45a8ff | 139 | /** |
bogdanm | 0:9b334a45a8ff | 140 | * @brief DeInitializes the CRC peripheral. |
bogdanm | 0:9b334a45a8ff | 141 | * @param hcrc: pointer to a CRC_HandleTypeDef structure that contains |
bogdanm | 0:9b334a45a8ff | 142 | * the configuration information for CRC |
bogdanm | 0:9b334a45a8ff | 143 | * @retval HAL status |
bogdanm | 0:9b334a45a8ff | 144 | */ |
bogdanm | 0:9b334a45a8ff | 145 | HAL_StatusTypeDef HAL_CRC_DeInit(CRC_HandleTypeDef *hcrc) |
bogdanm | 0:9b334a45a8ff | 146 | { |
bogdanm | 0:9b334a45a8ff | 147 | /* Check the CRC handle allocation */ |
bogdanm | 0:9b334a45a8ff | 148 | if(hcrc == NULL) |
bogdanm | 0:9b334a45a8ff | 149 | { |
bogdanm | 0:9b334a45a8ff | 150 | return HAL_ERROR; |
bogdanm | 0:9b334a45a8ff | 151 | } |
bogdanm | 0:9b334a45a8ff | 152 | |
bogdanm | 0:9b334a45a8ff | 153 | /* Check the parameters */ |
bogdanm | 0:9b334a45a8ff | 154 | assert_param(IS_CRC_ALL_INSTANCE(hcrc->Instance)); |
bogdanm | 0:9b334a45a8ff | 155 | |
bogdanm | 0:9b334a45a8ff | 156 | /* Change CRC peripheral state */ |
bogdanm | 0:9b334a45a8ff | 157 | hcrc->State = HAL_CRC_STATE_BUSY; |
bogdanm | 0:9b334a45a8ff | 158 | |
bogdanm | 0:9b334a45a8ff | 159 | /* DeInit the low level hardware */ |
bogdanm | 0:9b334a45a8ff | 160 | HAL_CRC_MspDeInit(hcrc); |
bogdanm | 0:9b334a45a8ff | 161 | |
bogdanm | 0:9b334a45a8ff | 162 | /* Resets the CRC calculation unit and sets the data register to 0xFFFF FFFF */ |
bogdanm | 0:9b334a45a8ff | 163 | __HAL_CRC_DR_RESET(hcrc); |
bogdanm | 0:9b334a45a8ff | 164 | |
bogdanm | 0:9b334a45a8ff | 165 | /* Change CRC peripheral state */ |
bogdanm | 0:9b334a45a8ff | 166 | hcrc->State = HAL_CRC_STATE_RESET; |
bogdanm | 0:9b334a45a8ff | 167 | |
bogdanm | 0:9b334a45a8ff | 168 | /* Release Lock */ |
bogdanm | 0:9b334a45a8ff | 169 | __HAL_UNLOCK(hcrc); |
bogdanm | 0:9b334a45a8ff | 170 | |
bogdanm | 0:9b334a45a8ff | 171 | /* Return function status */ |
bogdanm | 0:9b334a45a8ff | 172 | return HAL_OK; |
bogdanm | 0:9b334a45a8ff | 173 | } |
bogdanm | 0:9b334a45a8ff | 174 | |
bogdanm | 0:9b334a45a8ff | 175 | /** |
bogdanm | 0:9b334a45a8ff | 176 | * @brief Initializes the CRC MSP. |
bogdanm | 0:9b334a45a8ff | 177 | * @param hcrc: pointer to a CRC_HandleTypeDef structure that contains |
bogdanm | 0:9b334a45a8ff | 178 | * the configuration information for CRC |
bogdanm | 0:9b334a45a8ff | 179 | * @retval None |
bogdanm | 0:9b334a45a8ff | 180 | */ |
bogdanm | 0:9b334a45a8ff | 181 | __weak void HAL_CRC_MspInit(CRC_HandleTypeDef *hcrc) |
bogdanm | 0:9b334a45a8ff | 182 | { |
mbed_official | 124:6a4a5b7d7324 | 183 | /* Prevent unused argument(s) compilation warning */ |
mbed_official | 124:6a4a5b7d7324 | 184 | UNUSED(hcrc); |
bogdanm | 0:9b334a45a8ff | 185 | /* NOTE : This function Should not be modified, when the callback is needed, |
bogdanm | 0:9b334a45a8ff | 186 | the HAL_CRC_MspInit could be implemented in the user file |
bogdanm | 0:9b334a45a8ff | 187 | */ |
bogdanm | 0:9b334a45a8ff | 188 | } |
bogdanm | 0:9b334a45a8ff | 189 | |
bogdanm | 0:9b334a45a8ff | 190 | /** |
bogdanm | 0:9b334a45a8ff | 191 | * @brief DeInitializes the CRC MSP. |
bogdanm | 0:9b334a45a8ff | 192 | * @param hcrc: pointer to a CRC_HandleTypeDef structure that contains |
bogdanm | 0:9b334a45a8ff | 193 | * the configuration information for CRC |
bogdanm | 0:9b334a45a8ff | 194 | * @retval None |
bogdanm | 0:9b334a45a8ff | 195 | */ |
bogdanm | 0:9b334a45a8ff | 196 | __weak void HAL_CRC_MspDeInit(CRC_HandleTypeDef *hcrc) |
bogdanm | 0:9b334a45a8ff | 197 | { |
mbed_official | 124:6a4a5b7d7324 | 198 | /* Prevent unused argument(s) compilation warning */ |
mbed_official | 124:6a4a5b7d7324 | 199 | UNUSED(hcrc); |
bogdanm | 0:9b334a45a8ff | 200 | /* NOTE : This function Should not be modified, when the callback is needed, |
bogdanm | 0:9b334a45a8ff | 201 | the HAL_CRC_MspDeInit could be implemented in the user file |
bogdanm | 0:9b334a45a8ff | 202 | */ |
bogdanm | 0:9b334a45a8ff | 203 | } |
bogdanm | 0:9b334a45a8ff | 204 | |
bogdanm | 0:9b334a45a8ff | 205 | /** |
bogdanm | 0:9b334a45a8ff | 206 | * @} |
bogdanm | 0:9b334a45a8ff | 207 | */ |
bogdanm | 0:9b334a45a8ff | 208 | |
bogdanm | 0:9b334a45a8ff | 209 | /** @defgroup CRC_Exported_Functions_Group2 Peripheral Control functions |
bogdanm | 0:9b334a45a8ff | 210 | * @brief management functions. |
bogdanm | 0:9b334a45a8ff | 211 | * |
bogdanm | 0:9b334a45a8ff | 212 | @verbatim |
bogdanm | 0:9b334a45a8ff | 213 | ============================================================================== |
bogdanm | 0:9b334a45a8ff | 214 | ##### Peripheral Control functions ##### |
bogdanm | 0:9b334a45a8ff | 215 | ============================================================================== |
bogdanm | 0:9b334a45a8ff | 216 | [..] This section provides functions allowing to: |
bogdanm | 0:9b334a45a8ff | 217 | (+) Compute the 32-bit CRC value of 32-bit data buffer, |
bogdanm | 0:9b334a45a8ff | 218 | using combination of the previous CRC value and the new one. |
bogdanm | 0:9b334a45a8ff | 219 | (+) Compute the 32-bit CRC value of 32-bit data buffer, |
bogdanm | 0:9b334a45a8ff | 220 | independently of the previous CRC value. |
bogdanm | 0:9b334a45a8ff | 221 | |
bogdanm | 0:9b334a45a8ff | 222 | @endverbatim |
bogdanm | 0:9b334a45a8ff | 223 | * @{ |
bogdanm | 0:9b334a45a8ff | 224 | */ |
bogdanm | 0:9b334a45a8ff | 225 | |
bogdanm | 0:9b334a45a8ff | 226 | /** |
bogdanm | 0:9b334a45a8ff | 227 | * @brief Computes the 32-bit CRC of 32-bit data buffer using combination |
bogdanm | 0:9b334a45a8ff | 228 | * of the previous CRC value and the new one. |
bogdanm | 0:9b334a45a8ff | 229 | * @param hcrc: pointer to a CRC_HandleTypeDef structure that contains |
bogdanm | 0:9b334a45a8ff | 230 | * the configuration information for CRC |
bogdanm | 0:9b334a45a8ff | 231 | * @param pBuffer: pointer to the buffer containing the data to be computed |
bogdanm | 0:9b334a45a8ff | 232 | * @param BufferLength: length of the buffer to be computed (defined in word, 4 bytes) |
bogdanm | 0:9b334a45a8ff | 233 | * @retval 32-bit CRC |
bogdanm | 0:9b334a45a8ff | 234 | */ |
bogdanm | 0:9b334a45a8ff | 235 | uint32_t HAL_CRC_Accumulate(CRC_HandleTypeDef *hcrc, uint32_t pBuffer[], uint32_t BufferLength) |
bogdanm | 0:9b334a45a8ff | 236 | { |
bogdanm | 0:9b334a45a8ff | 237 | uint32_t index = 0; |
bogdanm | 0:9b334a45a8ff | 238 | |
bogdanm | 0:9b334a45a8ff | 239 | /* Process Locked */ |
bogdanm | 0:9b334a45a8ff | 240 | __HAL_LOCK(hcrc); |
bogdanm | 0:9b334a45a8ff | 241 | |
bogdanm | 0:9b334a45a8ff | 242 | /* Change CRC peripheral state */ |
bogdanm | 0:9b334a45a8ff | 243 | hcrc->State = HAL_CRC_STATE_BUSY; |
bogdanm | 0:9b334a45a8ff | 244 | |
bogdanm | 0:9b334a45a8ff | 245 | /* Enter Data to the CRC calculator */ |
bogdanm | 0:9b334a45a8ff | 246 | for(index = 0; index < BufferLength; index++) |
bogdanm | 0:9b334a45a8ff | 247 | { |
bogdanm | 0:9b334a45a8ff | 248 | hcrc->Instance->DR = pBuffer[index]; |
bogdanm | 0:9b334a45a8ff | 249 | } |
bogdanm | 0:9b334a45a8ff | 250 | |
bogdanm | 0:9b334a45a8ff | 251 | /* Change CRC peripheral state */ |
bogdanm | 0:9b334a45a8ff | 252 | hcrc->State = HAL_CRC_STATE_READY; |
bogdanm | 0:9b334a45a8ff | 253 | |
bogdanm | 0:9b334a45a8ff | 254 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 255 | __HAL_UNLOCK(hcrc); |
bogdanm | 0:9b334a45a8ff | 256 | |
bogdanm | 0:9b334a45a8ff | 257 | /* Return the CRC computed value */ |
bogdanm | 0:9b334a45a8ff | 258 | return hcrc->Instance->DR; |
bogdanm | 0:9b334a45a8ff | 259 | } |
bogdanm | 0:9b334a45a8ff | 260 | |
bogdanm | 0:9b334a45a8ff | 261 | /** |
bogdanm | 0:9b334a45a8ff | 262 | * @brief Computes the 32-bit CRC of 32-bit data buffer independently |
bogdanm | 0:9b334a45a8ff | 263 | * of the previous CRC value. |
bogdanm | 0:9b334a45a8ff | 264 | * @param hcrc: pointer to a CRC_HandleTypeDef structure that contains |
bogdanm | 0:9b334a45a8ff | 265 | * the configuration information for CRC |
bogdanm | 0:9b334a45a8ff | 266 | * @param pBuffer: Pointer to the buffer containing the data to be computed |
bogdanm | 0:9b334a45a8ff | 267 | * @param BufferLength: Length of the buffer to be computed (defined in word, 4 bytes) |
bogdanm | 0:9b334a45a8ff | 268 | * @retval 32-bit CRC |
bogdanm | 0:9b334a45a8ff | 269 | */ |
bogdanm | 0:9b334a45a8ff | 270 | uint32_t HAL_CRC_Calculate(CRC_HandleTypeDef *hcrc, uint32_t pBuffer[], uint32_t BufferLength) |
bogdanm | 0:9b334a45a8ff | 271 | { |
bogdanm | 0:9b334a45a8ff | 272 | uint32_t index = 0; |
bogdanm | 0:9b334a45a8ff | 273 | |
bogdanm | 0:9b334a45a8ff | 274 | /* Process Locked */ |
bogdanm | 0:9b334a45a8ff | 275 | __HAL_LOCK(hcrc); |
bogdanm | 0:9b334a45a8ff | 276 | |
bogdanm | 0:9b334a45a8ff | 277 | /* Change CRC peripheral state */ |
bogdanm | 0:9b334a45a8ff | 278 | hcrc->State = HAL_CRC_STATE_BUSY; |
bogdanm | 0:9b334a45a8ff | 279 | |
bogdanm | 0:9b334a45a8ff | 280 | /* Reset CRC Calculation Unit */ |
bogdanm | 0:9b334a45a8ff | 281 | __HAL_CRC_DR_RESET(hcrc); |
bogdanm | 0:9b334a45a8ff | 282 | |
bogdanm | 0:9b334a45a8ff | 283 | /* Enter Data to the CRC calculator */ |
bogdanm | 0:9b334a45a8ff | 284 | for(index = 0; index < BufferLength; index++) |
bogdanm | 0:9b334a45a8ff | 285 | { |
bogdanm | 0:9b334a45a8ff | 286 | hcrc->Instance->DR = pBuffer[index]; |
bogdanm | 0:9b334a45a8ff | 287 | } |
bogdanm | 0:9b334a45a8ff | 288 | |
bogdanm | 0:9b334a45a8ff | 289 | /* Change CRC peripheral state */ |
bogdanm | 0:9b334a45a8ff | 290 | hcrc->State = HAL_CRC_STATE_READY; |
bogdanm | 0:9b334a45a8ff | 291 | |
bogdanm | 0:9b334a45a8ff | 292 | /* Process Unlocked */ |
bogdanm | 0:9b334a45a8ff | 293 | __HAL_UNLOCK(hcrc); |
bogdanm | 0:9b334a45a8ff | 294 | |
bogdanm | 0:9b334a45a8ff | 295 | /* Return the CRC computed value */ |
bogdanm | 0:9b334a45a8ff | 296 | return hcrc->Instance->DR; |
bogdanm | 0:9b334a45a8ff | 297 | } |
bogdanm | 0:9b334a45a8ff | 298 | |
bogdanm | 0:9b334a45a8ff | 299 | /** |
bogdanm | 0:9b334a45a8ff | 300 | * @} |
bogdanm | 0:9b334a45a8ff | 301 | */ |
bogdanm | 0:9b334a45a8ff | 302 | |
bogdanm | 0:9b334a45a8ff | 303 | /** @defgroup CRC_Exported_Functions_Group3 Peripheral State functions |
bogdanm | 0:9b334a45a8ff | 304 | * @brief Peripheral State functions. |
bogdanm | 0:9b334a45a8ff | 305 | * |
bogdanm | 0:9b334a45a8ff | 306 | @verbatim |
bogdanm | 0:9b334a45a8ff | 307 | ============================================================================== |
bogdanm | 0:9b334a45a8ff | 308 | ##### Peripheral State functions ##### |
bogdanm | 0:9b334a45a8ff | 309 | ============================================================================== |
bogdanm | 0:9b334a45a8ff | 310 | [..] |
bogdanm | 0:9b334a45a8ff | 311 | This subsection permits to get in run-time the status of the peripheral. |
bogdanm | 0:9b334a45a8ff | 312 | |
bogdanm | 0:9b334a45a8ff | 313 | @endverbatim |
bogdanm | 0:9b334a45a8ff | 314 | * @{ |
bogdanm | 0:9b334a45a8ff | 315 | */ |
bogdanm | 0:9b334a45a8ff | 316 | |
bogdanm | 0:9b334a45a8ff | 317 | /** |
bogdanm | 0:9b334a45a8ff | 318 | * @brief Returns the CRC state. |
bogdanm | 0:9b334a45a8ff | 319 | * @param hcrc: pointer to a CRC_HandleTypeDef structure that contains |
bogdanm | 0:9b334a45a8ff | 320 | * the configuration information for CRC |
bogdanm | 0:9b334a45a8ff | 321 | * @retval HAL state |
bogdanm | 0:9b334a45a8ff | 322 | */ |
bogdanm | 0:9b334a45a8ff | 323 | HAL_CRC_StateTypeDef HAL_CRC_GetState(CRC_HandleTypeDef *hcrc) |
bogdanm | 0:9b334a45a8ff | 324 | { |
bogdanm | 0:9b334a45a8ff | 325 | return hcrc->State; |
bogdanm | 0:9b334a45a8ff | 326 | } |
bogdanm | 0:9b334a45a8ff | 327 | |
bogdanm | 0:9b334a45a8ff | 328 | /** |
bogdanm | 0:9b334a45a8ff | 329 | * @} |
bogdanm | 0:9b334a45a8ff | 330 | */ |
bogdanm | 0:9b334a45a8ff | 331 | |
bogdanm | 0:9b334a45a8ff | 332 | /** |
bogdanm | 0:9b334a45a8ff | 333 | * @} |
bogdanm | 0:9b334a45a8ff | 334 | */ |
bogdanm | 0:9b334a45a8ff | 335 | |
bogdanm | 0:9b334a45a8ff | 336 | #endif /* HAL_CRC_MODULE_ENABLED */ |
bogdanm | 0:9b334a45a8ff | 337 | /** |
bogdanm | 0:9b334a45a8ff | 338 | * @} |
bogdanm | 0:9b334a45a8ff | 339 | */ |
bogdanm | 0:9b334a45a8ff | 340 | |
bogdanm | 0:9b334a45a8ff | 341 | /** |
bogdanm | 0:9b334a45a8ff | 342 | * @} |
bogdanm | 0:9b334a45a8ff | 343 | */ |
bogdanm | 0:9b334a45a8ff | 344 | |
bogdanm | 0:9b334a45a8ff | 345 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |