Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

targets/cmsis/TARGET_STM/TARGET_STM32F7/stm32f7xx_hal_crc_ex.c@144:ef7eb2e8f9f7, 2016-09-02 (annotated)

Committer:
<>
Date:
Fri Sep 02 15:07:44 2016 +0100
Revision:
144:ef7eb2e8f9f7
Parent:
83:a036322b8637 
This updates the lib to the mbed lib v125

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /**
<> 144:ef7eb2e8f9f7 2 ******************************************************************************
<> 144:ef7eb2e8f9f7 3 * @file stm32f7xx_hal_crc_ex.c
<> 144:ef7eb2e8f9f7 4 * @author MCD Application Team
<> 144:ef7eb2e8f9f7 5 * @version V1.1.0
<> 144:ef7eb2e8f9f7 6 * @date 22-April-2016
<> 144:ef7eb2e8f9f7 7 * @brief Extended CRC HAL module driver.
<> 144:ef7eb2e8f9f7 8 *
<> 144:ef7eb2e8f9f7 9 * This file provides firmware functions to manage the following
<> 144:ef7eb2e8f9f7 10 * functionalities of the CRC peripheral:
<> 144:ef7eb2e8f9f7 11 * + Initialization/de-initialization functions
<> 144:ef7eb2e8f9f7 12 *
<> 144:ef7eb2e8f9f7 13 @verbatim
<> 144:ef7eb2e8f9f7 14 ==============================================================================
<> 144:ef7eb2e8f9f7 15 ##### CRC specific features #####
<> 144:ef7eb2e8f9f7 16 ==============================================================================
<> 144:ef7eb2e8f9f7 17 [..]
<> 144:ef7eb2e8f9f7 18 (#) Polynomial configuration.
<> 144:ef7eb2e8f9f7 19 (#) Input data reverse mode.
<> 144:ef7eb2e8f9f7 20 (#) Output data reverse mode.
<> 144:ef7eb2e8f9f7 21
<> 144:ef7eb2e8f9f7 22 @endverbatim
<> 144:ef7eb2e8f9f7 23 ******************************************************************************
<> 144:ef7eb2e8f9f7 24 * @attention
<> 144:ef7eb2e8f9f7 25 *
<> 144:ef7eb2e8f9f7 26 * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
<> 144:ef7eb2e8f9f7 27 *
<> 144:ef7eb2e8f9f7 28 * Redistribution and use in source and binary forms, with or without modification,
<> 144:ef7eb2e8f9f7 29 * are permitted provided that the following conditions are met:
<> 144:ef7eb2e8f9f7 30 * 1. Redistributions of source code must retain the above copyright notice,
<> 144:ef7eb2e8f9f7 31 * this list of conditions and the following disclaimer.
<> 144:ef7eb2e8f9f7 32 * 2. Redistributions in binary form must reproduce the above copyright notice,
<> 144:ef7eb2e8f9f7 33 * this list of conditions and the following disclaimer in the documentation
<> 144:ef7eb2e8f9f7 34 * and/or other materials provided with the distribution.
<> 144:ef7eb2e8f9f7 35 * 3. Neither the name of STMicroelectronics nor the names of its contributors
<> 144:ef7eb2e8f9f7 36 * may be used to endorse or promote products derived from this software
<> 144:ef7eb2e8f9f7 37 * without specific prior written permission.
<> 144:ef7eb2e8f9f7 38 *
<> 144:ef7eb2e8f9f7 39 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
<> 144:ef7eb2e8f9f7 40 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
<> 144:ef7eb2e8f9f7 41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
<> 144:ef7eb2e8f9f7 42 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
<> 144:ef7eb2e8f9f7 43 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
<> 144:ef7eb2e8f9f7 44 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
<> 144:ef7eb2e8f9f7 45 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
<> 144:ef7eb2e8f9f7 46 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
<> 144:ef7eb2e8f9f7 47 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
<> 144:ef7eb2e8f9f7 48 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
<> 144:ef7eb2e8f9f7 49 *
<> 144:ef7eb2e8f9f7 50 ******************************************************************************
<> 144:ef7eb2e8f9f7 51 */
<> 144:ef7eb2e8f9f7 52
<> 144:ef7eb2e8f9f7 53 /* Includes ------------------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 54 #include "stm32f7xx_hal.h"
<> 144:ef7eb2e8f9f7 55
<> 144:ef7eb2e8f9f7 56 /** @addtogroup STM32F7xx_HAL_Driver
<> 144:ef7eb2e8f9f7 57 * @{
<> 144:ef7eb2e8f9f7 58 */
<> 144:ef7eb2e8f9f7 59
<> 144:ef7eb2e8f9f7 60 /** @addtogroup CRCEx
<> 144:ef7eb2e8f9f7 61 * @brief CRC Extended HAL module driver
<> 144:ef7eb2e8f9f7 62 * @{
<> 144:ef7eb2e8f9f7 63 */
<> 144:ef7eb2e8f9f7 64
<> 144:ef7eb2e8f9f7 65 #ifdef HAL_CRC_MODULE_ENABLED
<> 144:ef7eb2e8f9f7 66
<> 144:ef7eb2e8f9f7 67 /* Private typedef -----------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 68 /* Private define ------------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 69 /* Private macro -------------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 70 /* Private variables ---------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 71 /* Private function prototypes -----------------------------------------------*/
<> 144:ef7eb2e8f9f7 72 /* Private functions ---------------------------------------------------------*/
<> 144:ef7eb2e8f9f7 73
<> 144:ef7eb2e8f9f7 74 /** @addtogroup CRCEx_Exported_Functions
<> 144:ef7eb2e8f9f7 75 * @{
<> 144:ef7eb2e8f9f7 76 */
<> 144:ef7eb2e8f9f7 77
<> 144:ef7eb2e8f9f7 78 /** @addtogroup CRCEx_Exported_Functions_Group1
<> 144:ef7eb2e8f9f7 79 * @brief Extended CRC features functions
<> 144:ef7eb2e8f9f7 80 *
<> 144:ef7eb2e8f9f7 81 @verbatim
<> 144:ef7eb2e8f9f7 82 ===============================================================================
<> 144:ef7eb2e8f9f7 83 ##### CRC Extended features functions #####
<> 144:ef7eb2e8f9f7 84 ===============================================================================
<> 144:ef7eb2e8f9f7 85 [..]
<> 144:ef7eb2e8f9f7 86 This subsection provides function allowing to:
<> 144:ef7eb2e8f9f7 87 (+) Set CRC polynomial if different from default one.
<> 144:ef7eb2e8f9f7 88
<> 144:ef7eb2e8f9f7 89 @endverbatim
<> 144:ef7eb2e8f9f7 90 * @{
<> 144:ef7eb2e8f9f7 91 */
<> 144:ef7eb2e8f9f7 92
<> 144:ef7eb2e8f9f7 93
<> 144:ef7eb2e8f9f7 94 /**
<> 144:ef7eb2e8f9f7 95 * @brief Initializes the CRC polynomial if different from default one.
<> 144:ef7eb2e8f9f7 96 * @param hcrc: CRC handle
<> 144:ef7eb2e8f9f7 97 * @param Pol: CRC generating polynomial (7, 8, 16 or 32-bit long)
<> 144:ef7eb2e8f9f7 98 * This parameter is written in normal representation, e.g.
<> 144:ef7eb2e8f9f7 99 * for a polynomial of degree 7, X^7 + X^6 + X^5 + X^2 + 1 is written 0x65
<> 144:ef7eb2e8f9f7 100 * for a polynomial of degree 16, X^16 + X^12 + X^5 + 1 is written 0x1021
<> 144:ef7eb2e8f9f7 101 * @param PolyLength: CRC polynomial length
<> 144:ef7eb2e8f9f7 102 * This parameter can be one of the following values:
<> 144:ef7eb2e8f9f7 103 * @arg CRC_POLYLENGTH_7B: 7-bit long CRC (generating polynomial of degree 7)
<> 144:ef7eb2e8f9f7 104 * @arg CRC_POLYLENGTH_8B: 8-bit long CRC (generating polynomial of degree 8)
<> 144:ef7eb2e8f9f7 105 * @arg CRC_POLYLENGTH_16B: 16-bit long CRC (generating polynomial of degree 16)
<> 144:ef7eb2e8f9f7 106 * @arg CRC_POLYLENGTH_32B: 32-bit long CRC (generating polynomial of degree 32)
<> 144:ef7eb2e8f9f7 107 * @retval HAL status
<> 144:ef7eb2e8f9f7 108 */
<> 144:ef7eb2e8f9f7 109 HAL_StatusTypeDef HAL_CRCEx_Polynomial_Set(CRC_HandleTypeDef *hcrc, uint32_t Pol, uint32_t PolyLength)
<> 144:ef7eb2e8f9f7 110 {
<> 144:ef7eb2e8f9f7 111 uint32_t msb = 31; /* polynomial degree is 32 at most, so msb is initialized to max value */
<> 144:ef7eb2e8f9f7 112
<> 144:ef7eb2e8f9f7 113 /* Check the parameters */
<> 144:ef7eb2e8f9f7 114 assert_param(IS_CRC_POL_LENGTH(PolyLength));
<> 144:ef7eb2e8f9f7 115
<> 144:ef7eb2e8f9f7 116 /* check polynomial definition vs polynomial size:
<> 144:ef7eb2e8f9f7 117 * polynomial length must be aligned with polynomial
<> 144:ef7eb2e8f9f7 118 * definition. HAL_ERROR is reported if Pol degree is
<> 144:ef7eb2e8f9f7 119 * larger than that indicated by PolyLength.
<> 144:ef7eb2e8f9f7 120 * Look for MSB position: msb will contain the degree of
<> 144:ef7eb2e8f9f7 121 * the second to the largest polynomial member. E.g., for
<> 144:ef7eb2e8f9f7 122 * X^7 + X^6 + X^5 + X^2 + 1, msb = 6. */
<> 144:ef7eb2e8f9f7 123 while (((Pol & ((uint32_t)(0x1) << msb)) == 0) && (msb-- > 0))
<> 144:ef7eb2e8f9f7 124 {
<> 144:ef7eb2e8f9f7 125 }
<> 144:ef7eb2e8f9f7 126
<> 144:ef7eb2e8f9f7 127 switch (PolyLength)
<> 144:ef7eb2e8f9f7 128 {
<> 144:ef7eb2e8f9f7 129 case CRC_POLYLENGTH_7B:
<> 144:ef7eb2e8f9f7 130 if (msb >= HAL_CRC_LENGTH_7B)
<> 144:ef7eb2e8f9f7 131 {
<> 144:ef7eb2e8f9f7 132 return HAL_ERROR;
<> 144:ef7eb2e8f9f7 133 }
<> 144:ef7eb2e8f9f7 134 break;
<> 144:ef7eb2e8f9f7 135 case CRC_POLYLENGTH_8B:
<> 144:ef7eb2e8f9f7 136 if (msb >= HAL_CRC_LENGTH_8B)
<> 144:ef7eb2e8f9f7 137 {
<> 144:ef7eb2e8f9f7 138 return HAL_ERROR;
<> 144:ef7eb2e8f9f7 139 }
<> 144:ef7eb2e8f9f7 140 break;
<> 144:ef7eb2e8f9f7 141 case CRC_POLYLENGTH_16B:
<> 144:ef7eb2e8f9f7 142 if (msb >= HAL_CRC_LENGTH_16B)
<> 144:ef7eb2e8f9f7 143 {
<> 144:ef7eb2e8f9f7 144 return HAL_ERROR;
<> 144:ef7eb2e8f9f7 145 }
<> 144:ef7eb2e8f9f7 146 break;
<> 144:ef7eb2e8f9f7 147 case CRC_POLYLENGTH_32B:
<> 144:ef7eb2e8f9f7 148 /* no polynomial definition vs. polynomial length issue possible */
<> 144:ef7eb2e8f9f7 149 break;
<> 144:ef7eb2e8f9f7 150 default:
<> 144:ef7eb2e8f9f7 151 break;
<> 144:ef7eb2e8f9f7 152 }
<> 144:ef7eb2e8f9f7 153
<> 144:ef7eb2e8f9f7 154 /* set generating polynomial */
<> 144:ef7eb2e8f9f7 155 WRITE_REG(hcrc->Instance->POL, Pol);
<> 144:ef7eb2e8f9f7 156
<> 144:ef7eb2e8f9f7 157 /* set generating polynomial size */
<> 144:ef7eb2e8f9f7 158 MODIFY_REG(hcrc->Instance->CR, CRC_CR_POLYSIZE, PolyLength);
<> 144:ef7eb2e8f9f7 159
<> 144:ef7eb2e8f9f7 160 /* Return function status */
<> 144:ef7eb2e8f9f7 161 return HAL_OK;
<> 144:ef7eb2e8f9f7 162 }
<> 144:ef7eb2e8f9f7 163
<> 144:ef7eb2e8f9f7 164 /**
<> 144:ef7eb2e8f9f7 165 * @brief Set the Reverse Input data mode.
<> 144:ef7eb2e8f9f7 166 * @param hcrc: CRC handle
<> 144:ef7eb2e8f9f7 167 * @param InputReverseMode: Input Data inversion mode
<> 144:ef7eb2e8f9f7 168 * This parameter can be one of the following values:
<> 144:ef7eb2e8f9f7 169 * @arg CRC_INPUTDATA_INVERSION_NONE: no change in bit order (default value)
<> 144:ef7eb2e8f9f7 170 * @arg CRC_INPUTDATA_INVERSION_BYTE: Byte-wise bit reversal
<> 144:ef7eb2e8f9f7 171 * @arg CRC_INPUTDATA_INVERSION_HALFWORD: HalfWord-wise bit reversal
<> 144:ef7eb2e8f9f7 172 * @arg CRC_INPUTDATA_INVERSION_WORD: Word-wise bit reversal
<> 144:ef7eb2e8f9f7 173 * @retval HAL status
<> 144:ef7eb2e8f9f7 174 */
<> 144:ef7eb2e8f9f7 175 HAL_StatusTypeDef HAL_CRCEx_Input_Data_Reverse(CRC_HandleTypeDef *hcrc, uint32_t InputReverseMode)
<> 144:ef7eb2e8f9f7 176 {
<> 144:ef7eb2e8f9f7 177 /* Check the parameters */
<> 144:ef7eb2e8f9f7 178 assert_param(IS_CRC_INPUTDATA_INVERSION_MODE(InputReverseMode));
<> 144:ef7eb2e8f9f7 179
<> 144:ef7eb2e8f9f7 180 /* Change CRC peripheral state */
<> 144:ef7eb2e8f9f7 181 hcrc->State = HAL_CRC_STATE_BUSY;
<> 144:ef7eb2e8f9f7 182
<> 144:ef7eb2e8f9f7 183 /* set input data inversion mode */
<> 144:ef7eb2e8f9f7 184 MODIFY_REG(hcrc->Instance->CR, CRC_CR_REV_IN, InputReverseMode);
<> 144:ef7eb2e8f9f7 185 /* Change CRC peripheral state */
<> 144:ef7eb2e8f9f7 186 hcrc->State = HAL_CRC_STATE_READY;
<> 144:ef7eb2e8f9f7 187
<> 144:ef7eb2e8f9f7 188 /* Return function status */
<> 144:ef7eb2e8f9f7 189 return HAL_OK;
<> 144:ef7eb2e8f9f7 190 }
<> 144:ef7eb2e8f9f7 191
<> 144:ef7eb2e8f9f7 192 /**
<> 144:ef7eb2e8f9f7 193 * @brief Set the Reverse Output data mode.
<> 144:ef7eb2e8f9f7 194 * @param hcrc: CRC handle
<> 144:ef7eb2e8f9f7 195 * @param OutputReverseMode: Output Data inversion mode
<> 144:ef7eb2e8f9f7 196 * This parameter can be one of the following values:
<> 144:ef7eb2e8f9f7 197 * @arg CRC_OUTPUTDATA_INVERSION_DISABLE: no CRC inversion (default value)
<> 144:ef7eb2e8f9f7 198 * @arg CRC_OUTPUTDATA_INVERSION_ENABLE: bit-level inversion (e.g for a 8-bit CRC: 0xB5 becomes 0xAD)
<> 144:ef7eb2e8f9f7 199 * @retval HAL status
<> 144:ef7eb2e8f9f7 200 */
<> 144:ef7eb2e8f9f7 201 HAL_StatusTypeDef HAL_CRCEx_Output_Data_Reverse(CRC_HandleTypeDef *hcrc, uint32_t OutputReverseMode)
<> 144:ef7eb2e8f9f7 202 {
<> 144:ef7eb2e8f9f7 203 /* Check the parameters */
<> 144:ef7eb2e8f9f7 204 assert_param(IS_CRC_OUTPUTDATA_INVERSION_MODE(OutputReverseMode));
<> 144:ef7eb2e8f9f7 205
<> 144:ef7eb2e8f9f7 206 /* Change CRC peripheral state */
<> 144:ef7eb2e8f9f7 207 hcrc->State = HAL_CRC_STATE_BUSY;
<> 144:ef7eb2e8f9f7 208
<> 144:ef7eb2e8f9f7 209 /* set output data inversion mode */
<> 144:ef7eb2e8f9f7 210 MODIFY_REG(hcrc->Instance->CR, CRC_CR_REV_OUT, OutputReverseMode);
<> 144:ef7eb2e8f9f7 211
<> 144:ef7eb2e8f9f7 212 /* Change CRC peripheral state */
<> 144:ef7eb2e8f9f7 213 hcrc->State = HAL_CRC_STATE_READY;
<> 144:ef7eb2e8f9f7 214
<> 144:ef7eb2e8f9f7 215 /* Return function status */
<> 144:ef7eb2e8f9f7 216 return HAL_OK;
<> 144:ef7eb2e8f9f7 217 }
<> 144:ef7eb2e8f9f7 218
<> 144:ef7eb2e8f9f7 219
<> 144:ef7eb2e8f9f7 220
<> 144:ef7eb2e8f9f7 221
<> 144:ef7eb2e8f9f7 222 /**
<> 144:ef7eb2e8f9f7 223 * @}
<> 144:ef7eb2e8f9f7 224 */
<> 144:ef7eb2e8f9f7 225
<> 144:ef7eb2e8f9f7 226
<> 144:ef7eb2e8f9f7 227 /**
<> 144:ef7eb2e8f9f7 228 * @}
<> 144:ef7eb2e8f9f7 229 */
<> 144:ef7eb2e8f9f7 230
<> 144:ef7eb2e8f9f7 231
<> 144:ef7eb2e8f9f7 232 #endif /* HAL_CRC_MODULE_ENABLED */
<> 144:ef7eb2e8f9f7 233 /**
<> 144:ef7eb2e8f9f7 234 * @}
<> 144:ef7eb2e8f9f7 235 */
<> 144:ef7eb2e8f9f7 236
<> 144:ef7eb2e8f9f7 237 /**
<> 144:ef7eb2e8f9f7 238 * @}
<> 144:ef7eb2e8f9f7 239 */
<> 144:ef7eb2e8f9f7 240
<> 144:ef7eb2e8f9f7 241 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
<> 144:ef7eb2e8f9f7 242