fix LPC812 PWM
Fork of mbed-dev by
targets/cmsis/TARGET_STM/TARGET_STM32L0/stm32l0xx_hal_crc_ex.c@0:9b334a45a8ff, 2015-10-01 (annotated)
- Committer:
- bogdanm
- Date:
- Thu Oct 01 15:25:22 2015 +0300
- Revision:
- 0:9b334a45a8ff
- Child:
- 113:b3775bf36a83
Initial commit on mbed-dev
Replaces mbed-src (now inactive)
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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bogdanm | 0:9b334a45a8ff | 1 | /** |
bogdanm | 0:9b334a45a8ff | 2 | ****************************************************************************** |
bogdanm | 0:9b334a45a8ff | 3 | * @file stm32l0xx_hal_crc_ex.c |
bogdanm | 0:9b334a45a8ff | 4 | * @author MCD Application Team |
bogdanm | 0:9b334a45a8ff | 5 | * @version V1.2.0 |
bogdanm | 0:9b334a45a8ff | 6 | * @date 06-February-2015 |
bogdanm | 0:9b334a45a8ff | 7 | * @brief Extended CRC HAL module driver. |
bogdanm | 0:9b334a45a8ff | 8 | * |
bogdanm | 0:9b334a45a8ff | 9 | * This file provides firmware functions to manage the following |
bogdanm | 0:9b334a45a8ff | 10 | * functionalities of the CRC peripheral: |
bogdanm | 0:9b334a45a8ff | 11 | * + Initialization/de-initialization functions |
bogdanm | 0:9b334a45a8ff | 12 | * |
bogdanm | 0:9b334a45a8ff | 13 | @verbatim |
bogdanm | 0:9b334a45a8ff | 14 | ============================================================================== |
bogdanm | 0:9b334a45a8ff | 15 | ##### CRC specific features ##### |
bogdanm | 0:9b334a45a8ff | 16 | ============================================================================== |
bogdanm | 0:9b334a45a8ff | 17 | [..] |
bogdanm | 0:9b334a45a8ff | 18 | (#) Polynomial configuration. |
bogdanm | 0:9b334a45a8ff | 19 | (#) Input data reverse mode. |
bogdanm | 0:9b334a45a8ff | 20 | (#) Output data reverse mode. |
bogdanm | 0:9b334a45a8ff | 21 | |
bogdanm | 0:9b334a45a8ff | 22 | @endverbatim |
bogdanm | 0:9b334a45a8ff | 23 | ****************************************************************************** |
bogdanm | 0:9b334a45a8ff | 24 | * @attention |
bogdanm | 0:9b334a45a8ff | 25 | * |
bogdanm | 0:9b334a45a8ff | 26 | * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2> |
bogdanm | 0:9b334a45a8ff | 27 | * |
bogdanm | 0:9b334a45a8ff | 28 | * Redistribution and use in source and binary forms, with or without modification, |
bogdanm | 0:9b334a45a8ff | 29 | * are permitted provided that the following conditions are met: |
bogdanm | 0:9b334a45a8ff | 30 | * 1. Redistributions of source code must retain the above copyright notice, |
bogdanm | 0:9b334a45a8ff | 31 | * this list of conditions and the following disclaimer. |
bogdanm | 0:9b334a45a8ff | 32 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
bogdanm | 0:9b334a45a8ff | 33 | * this list of conditions and the following disclaimer in the documentation |
bogdanm | 0:9b334a45a8ff | 34 | * and/or other materials provided with the distribution. |
bogdanm | 0:9b334a45a8ff | 35 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
bogdanm | 0:9b334a45a8ff | 36 | * may be used to endorse or promote products derived from this software |
bogdanm | 0:9b334a45a8ff | 37 | * without specific prior written permission. |
bogdanm | 0:9b334a45a8ff | 38 | * |
bogdanm | 0:9b334a45a8ff | 39 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
bogdanm | 0:9b334a45a8ff | 40 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
bogdanm | 0:9b334a45a8ff | 41 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
bogdanm | 0:9b334a45a8ff | 42 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
bogdanm | 0:9b334a45a8ff | 43 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
bogdanm | 0:9b334a45a8ff | 44 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
bogdanm | 0:9b334a45a8ff | 45 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
bogdanm | 0:9b334a45a8ff | 46 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
bogdanm | 0:9b334a45a8ff | 47 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
bogdanm | 0:9b334a45a8ff | 48 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
bogdanm | 0:9b334a45a8ff | 49 | * |
bogdanm | 0:9b334a45a8ff | 50 | ****************************************************************************** |
bogdanm | 0:9b334a45a8ff | 51 | */ |
bogdanm | 0:9b334a45a8ff | 52 | |
bogdanm | 0:9b334a45a8ff | 53 | /* Includes ------------------------------------------------------------------*/ |
bogdanm | 0:9b334a45a8ff | 54 | #include "stm32l0xx_hal.h" |
bogdanm | 0:9b334a45a8ff | 55 | |
bogdanm | 0:9b334a45a8ff | 56 | /** @addtogroup STM32L0xx_HAL_Driver |
bogdanm | 0:9b334a45a8ff | 57 | * @{ |
bogdanm | 0:9b334a45a8ff | 58 | */ |
bogdanm | 0:9b334a45a8ff | 59 | |
bogdanm | 0:9b334a45a8ff | 60 | /** @addtogroup CRCEx |
bogdanm | 0:9b334a45a8ff | 61 | * @brief CRC Extended HAL module driver |
bogdanm | 0:9b334a45a8ff | 62 | * @{ |
bogdanm | 0:9b334a45a8ff | 63 | */ |
bogdanm | 0:9b334a45a8ff | 64 | |
bogdanm | 0:9b334a45a8ff | 65 | #ifdef HAL_CRC_MODULE_ENABLED |
bogdanm | 0:9b334a45a8ff | 66 | |
bogdanm | 0:9b334a45a8ff | 67 | /* Private typedef -----------------------------------------------------------*/ |
bogdanm | 0:9b334a45a8ff | 68 | /* Private define ------------------------------------------------------------*/ |
bogdanm | 0:9b334a45a8ff | 69 | /* Private macro -------------------------------------------------------------*/ |
bogdanm | 0:9b334a45a8ff | 70 | /* Private variables ---------------------------------------------------------*/ |
bogdanm | 0:9b334a45a8ff | 71 | /* Private function prototypes -----------------------------------------------*/ |
bogdanm | 0:9b334a45a8ff | 72 | /* Private functions ---------------------------------------------------------*/ |
bogdanm | 0:9b334a45a8ff | 73 | |
bogdanm | 0:9b334a45a8ff | 74 | /** @addtogroup CRCEx_Exported_Functions |
bogdanm | 0:9b334a45a8ff | 75 | * @{ |
bogdanm | 0:9b334a45a8ff | 76 | */ |
bogdanm | 0:9b334a45a8ff | 77 | |
bogdanm | 0:9b334a45a8ff | 78 | /** @addtogroup CRCEx_Exported_Functions_Group1 |
bogdanm | 0:9b334a45a8ff | 79 | * @brief Extended CRC features functions |
bogdanm | 0:9b334a45a8ff | 80 | * |
bogdanm | 0:9b334a45a8ff | 81 | @verbatim |
bogdanm | 0:9b334a45a8ff | 82 | =============================================================================== |
bogdanm | 0:9b334a45a8ff | 83 | ##### CRC Extended features functions ##### |
bogdanm | 0:9b334a45a8ff | 84 | =============================================================================== |
bogdanm | 0:9b334a45a8ff | 85 | [..] |
bogdanm | 0:9b334a45a8ff | 86 | This subsection provides function allowing to: |
bogdanm | 0:9b334a45a8ff | 87 | (+) Set CRC polynomial if different from default one. |
bogdanm | 0:9b334a45a8ff | 88 | |
bogdanm | 0:9b334a45a8ff | 89 | @endverbatim |
bogdanm | 0:9b334a45a8ff | 90 | * @{ |
bogdanm | 0:9b334a45a8ff | 91 | */ |
bogdanm | 0:9b334a45a8ff | 92 | |
bogdanm | 0:9b334a45a8ff | 93 | |
bogdanm | 0:9b334a45a8ff | 94 | /** |
bogdanm | 0:9b334a45a8ff | 95 | * @brief Initializes the CRC polynomial if different from default one. |
bogdanm | 0:9b334a45a8ff | 96 | * @param hcrc: CRC handle |
bogdanm | 0:9b334a45a8ff | 97 | * @param Pol: CRC generating polynomial (7, 8, 16 or 32-bit long) |
bogdanm | 0:9b334a45a8ff | 98 | * This parameter is written in normal representation, e.g. |
bogdanm | 0:9b334a45a8ff | 99 | * for a polynomial of degree 7, X^7 + X^6 + X^5 + X^2 + 1 is written 0x65 |
bogdanm | 0:9b334a45a8ff | 100 | * for a polynomial of degree 16, X^16 + X^12 + X^5 + 1 is written 0x1021 |
bogdanm | 0:9b334a45a8ff | 101 | * @param PolyLength: CRC polynomial length |
bogdanm | 0:9b334a45a8ff | 102 | * This parameter can be one of the following values: |
bogdanm | 0:9b334a45a8ff | 103 | * @arg CRC_POLYLENGTH_7B: 7-bit long CRC (generating polynomial of degree 7) |
bogdanm | 0:9b334a45a8ff | 104 | * @arg CRC_POLYLENGTH_8B: 8-bit long CRC (generating polynomial of degree 8) |
bogdanm | 0:9b334a45a8ff | 105 | * @arg CRC_POLYLENGTH_16B: 16-bit long CRC (generating polynomial of degree 16) |
bogdanm | 0:9b334a45a8ff | 106 | * @arg CRC_POLYLENGTH_32B: 32-bit long CRC (generating polynomial of degree 32) |
bogdanm | 0:9b334a45a8ff | 107 | * @retval HAL status |
bogdanm | 0:9b334a45a8ff | 108 | */ |
bogdanm | 0:9b334a45a8ff | 109 | HAL_StatusTypeDef HAL_CRCEx_Polynomial_Set(CRC_HandleTypeDef *hcrc, uint32_t Pol, uint32_t PolyLength) |
bogdanm | 0:9b334a45a8ff | 110 | { |
bogdanm | 0:9b334a45a8ff | 111 | uint32_t msb = 31; /* polynomial degree is 32 at most, so msb is initialized to max value */ |
bogdanm | 0:9b334a45a8ff | 112 | |
bogdanm | 0:9b334a45a8ff | 113 | /* Check the parameters */ |
bogdanm | 0:9b334a45a8ff | 114 | assert_param(IS_CRC_POL_LENGTH(PolyLength)); |
bogdanm | 0:9b334a45a8ff | 115 | |
bogdanm | 0:9b334a45a8ff | 116 | /* check polynomial definition vs polynomial size: |
bogdanm | 0:9b334a45a8ff | 117 | * polynomial length must be aligned with polynomial |
bogdanm | 0:9b334a45a8ff | 118 | * definition. HAL_ERROR is reported if Pol degree is |
bogdanm | 0:9b334a45a8ff | 119 | * larger than that indicated by PolyLength. |
bogdanm | 0:9b334a45a8ff | 120 | * Look for MSB position: msb will contain the degree of |
bogdanm | 0:9b334a45a8ff | 121 | * the second to the largest polynomial member. E.g., for |
bogdanm | 0:9b334a45a8ff | 122 | * X^7 + X^6 + X^5 + X^2 + 1, msb = 6. */ |
bogdanm | 0:9b334a45a8ff | 123 | while (((Pol & ((uint32_t)(0x1) << msb)) == 0) && (msb-- > 0)); |
bogdanm | 0:9b334a45a8ff | 124 | |
bogdanm | 0:9b334a45a8ff | 125 | switch (PolyLength) |
bogdanm | 0:9b334a45a8ff | 126 | { |
bogdanm | 0:9b334a45a8ff | 127 | case CRC_POLYLENGTH_7B: |
bogdanm | 0:9b334a45a8ff | 128 | if (msb >= HAL_CRC_LENGTH_7B) return HAL_ERROR; |
bogdanm | 0:9b334a45a8ff | 129 | break; |
bogdanm | 0:9b334a45a8ff | 130 | case CRC_POLYLENGTH_8B: |
bogdanm | 0:9b334a45a8ff | 131 | if (msb >= HAL_CRC_LENGTH_8B) return HAL_ERROR; |
bogdanm | 0:9b334a45a8ff | 132 | break; |
bogdanm | 0:9b334a45a8ff | 133 | case CRC_POLYLENGTH_16B: |
bogdanm | 0:9b334a45a8ff | 134 | if (msb >= HAL_CRC_LENGTH_16B) return HAL_ERROR; |
bogdanm | 0:9b334a45a8ff | 135 | break; |
bogdanm | 0:9b334a45a8ff | 136 | case CRC_POLYLENGTH_32B: |
bogdanm | 0:9b334a45a8ff | 137 | /* no polynomial definition vs. polynomial length issue possible */ |
bogdanm | 0:9b334a45a8ff | 138 | break; |
bogdanm | 0:9b334a45a8ff | 139 | default: |
bogdanm | 0:9b334a45a8ff | 140 | break; |
bogdanm | 0:9b334a45a8ff | 141 | } |
bogdanm | 0:9b334a45a8ff | 142 | |
bogdanm | 0:9b334a45a8ff | 143 | /* set generating polynomial */ |
bogdanm | 0:9b334a45a8ff | 144 | WRITE_REG(hcrc->Instance->POL, Pol); |
bogdanm | 0:9b334a45a8ff | 145 | |
bogdanm | 0:9b334a45a8ff | 146 | /* set generating polynomial size */ |
bogdanm | 0:9b334a45a8ff | 147 | MODIFY_REG(hcrc->Instance->CR, CRC_CR_POLYSIZE, PolyLength); |
bogdanm | 0:9b334a45a8ff | 148 | |
bogdanm | 0:9b334a45a8ff | 149 | /* Return function status */ |
bogdanm | 0:9b334a45a8ff | 150 | return HAL_OK; |
bogdanm | 0:9b334a45a8ff | 151 | } |
bogdanm | 0:9b334a45a8ff | 152 | |
bogdanm | 0:9b334a45a8ff | 153 | /** |
bogdanm | 0:9b334a45a8ff | 154 | * @brief Set the Reverse Input data mode. |
bogdanm | 0:9b334a45a8ff | 155 | * @param hcrc: CRC handle |
bogdanm | 0:9b334a45a8ff | 156 | * @param InputReverseMode: Input Data inversion mode |
bogdanm | 0:9b334a45a8ff | 157 | * This parameter can be one of the following values: |
bogdanm | 0:9b334a45a8ff | 158 | * @arg CRC_INPUTDATA_INVERSION_NONE: no change in bit order (default value) |
bogdanm | 0:9b334a45a8ff | 159 | * @arg CRC_INPUTDATA_INVERSION_BYTE: Byte-wise bit reversal |
bogdanm | 0:9b334a45a8ff | 160 | * @arg CRC_INPUTDATA_INVERSION_HALFWORD: HalfWord-wise bit reversal |
bogdanm | 0:9b334a45a8ff | 161 | * @arg CRC_INPUTDATA_INVERSION_WORD: Word-wise bit reversal |
bogdanm | 0:9b334a45a8ff | 162 | * @retval HAL status |
bogdanm | 0:9b334a45a8ff | 163 | */ |
bogdanm | 0:9b334a45a8ff | 164 | HAL_StatusTypeDef HAL_CRCEx_Input_Data_Reverse(CRC_HandleTypeDef *hcrc, uint32_t InputReverseMode) |
bogdanm | 0:9b334a45a8ff | 165 | { |
bogdanm | 0:9b334a45a8ff | 166 | /* Check the parameters */ |
bogdanm | 0:9b334a45a8ff | 167 | assert_param(IS_CRC_INPUTDATA_INVERSION_MODE(InputReverseMode)); |
bogdanm | 0:9b334a45a8ff | 168 | |
bogdanm | 0:9b334a45a8ff | 169 | /* Change CRC peripheral state */ |
bogdanm | 0:9b334a45a8ff | 170 | hcrc->State = HAL_CRC_STATE_BUSY; |
bogdanm | 0:9b334a45a8ff | 171 | |
bogdanm | 0:9b334a45a8ff | 172 | /* set input data inversion mode */ |
bogdanm | 0:9b334a45a8ff | 173 | MODIFY_REG(hcrc->Instance->CR, CRC_CR_REV_IN, InputReverseMode); |
bogdanm | 0:9b334a45a8ff | 174 | /* Change CRC peripheral state */ |
bogdanm | 0:9b334a45a8ff | 175 | hcrc->State = HAL_CRC_STATE_READY; |
bogdanm | 0:9b334a45a8ff | 176 | |
bogdanm | 0:9b334a45a8ff | 177 | /* Return function status */ |
bogdanm | 0:9b334a45a8ff | 178 | return HAL_OK; |
bogdanm | 0:9b334a45a8ff | 179 | } |
bogdanm | 0:9b334a45a8ff | 180 | |
bogdanm | 0:9b334a45a8ff | 181 | /** |
bogdanm | 0:9b334a45a8ff | 182 | * @brief Set the Reverse Output data mode. |
bogdanm | 0:9b334a45a8ff | 183 | * @param hcrc: CRC handle |
bogdanm | 0:9b334a45a8ff | 184 | * @param OutputReverseMode: Output Data inversion mode |
bogdanm | 0:9b334a45a8ff | 185 | * This parameter can be one of the following values: |
bogdanm | 0:9b334a45a8ff | 186 | * @arg CRC_OUTPUTDATA_INVERSION_DISABLE: no CRC inversion (default value) |
bogdanm | 0:9b334a45a8ff | 187 | * @arg CRC_OUTPUTDATA_INVERSION_ENABLE: bit-level inversion (e.g for a 8-bit CRC: 0xB5 becomes 0xAD) |
bogdanm | 0:9b334a45a8ff | 188 | * @retval HAL status |
bogdanm | 0:9b334a45a8ff | 189 | */ |
bogdanm | 0:9b334a45a8ff | 190 | HAL_StatusTypeDef HAL_CRCEx_Output_Data_Reverse(CRC_HandleTypeDef *hcrc, uint32_t OutputReverseMode) |
bogdanm | 0:9b334a45a8ff | 191 | { |
bogdanm | 0:9b334a45a8ff | 192 | /* Check the parameters */ |
bogdanm | 0:9b334a45a8ff | 193 | assert_param(IS_CRC_OUTPUTDATA_INVERSION_MODE(OutputReverseMode)); |
bogdanm | 0:9b334a45a8ff | 194 | |
bogdanm | 0:9b334a45a8ff | 195 | /* Change CRC peripheral state */ |
bogdanm | 0:9b334a45a8ff | 196 | hcrc->State = HAL_CRC_STATE_BUSY; |
bogdanm | 0:9b334a45a8ff | 197 | |
bogdanm | 0:9b334a45a8ff | 198 | /* set output data inversion mode */ |
bogdanm | 0:9b334a45a8ff | 199 | MODIFY_REG(hcrc->Instance->CR, CRC_CR_REV_OUT, OutputReverseMode); |
bogdanm | 0:9b334a45a8ff | 200 | |
bogdanm | 0:9b334a45a8ff | 201 | /* Change CRC peripheral state */ |
bogdanm | 0:9b334a45a8ff | 202 | hcrc->State = HAL_CRC_STATE_READY; |
bogdanm | 0:9b334a45a8ff | 203 | |
bogdanm | 0:9b334a45a8ff | 204 | /* Return function status */ |
bogdanm | 0:9b334a45a8ff | 205 | return HAL_OK; |
bogdanm | 0:9b334a45a8ff | 206 | } |
bogdanm | 0:9b334a45a8ff | 207 | |
bogdanm | 0:9b334a45a8ff | 208 | |
bogdanm | 0:9b334a45a8ff | 209 | |
bogdanm | 0:9b334a45a8ff | 210 | |
bogdanm | 0:9b334a45a8ff | 211 | /** |
bogdanm | 0:9b334a45a8ff | 212 | * @} |
bogdanm | 0:9b334a45a8ff | 213 | */ |
bogdanm | 0:9b334a45a8ff | 214 | |
bogdanm | 0:9b334a45a8ff | 215 | |
bogdanm | 0:9b334a45a8ff | 216 | /** |
bogdanm | 0:9b334a45a8ff | 217 | * @} |
bogdanm | 0:9b334a45a8ff | 218 | */ |
bogdanm | 0:9b334a45a8ff | 219 | |
bogdanm | 0:9b334a45a8ff | 220 | |
bogdanm | 0:9b334a45a8ff | 221 | #endif /* HAL_CRC_MODULE_ENABLED */ |
bogdanm | 0:9b334a45a8ff | 222 | /** |
bogdanm | 0:9b334a45a8ff | 223 | * @} |
bogdanm | 0:9b334a45a8ff | 224 | */ |
bogdanm | 0:9b334a45a8ff | 225 | |
bogdanm | 0:9b334a45a8ff | 226 | /** |
bogdanm | 0:9b334a45a8ff | 227 | * @} |
bogdanm | 0:9b334a45a8ff | 228 | */ |
bogdanm | 0:9b334a45a8ff | 229 | |
bogdanm | 0:9b334a45a8ff | 230 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |
bogdanm | 0:9b334a45a8ff | 231 |