en 129 / mbed-dev

fix LPC812 PWM

Dependents:   IR_LED_Send

Fork of mbed-dev by mbed official

targets/cmsis/TARGET_STM/TARGET_STM32L4/stm32l4xx_hal_crc_ex.c@129:2e517c56bcfb, 2016-05-16 (annotated)

Committer:
nameless129
Date:
Mon May 16 16:50:30 2016 +0000
Revision:
129:2e517c56bcfb
Parent:
0:9b334a45a8ff 
PWM Fix:Duty 0%??H???????????????

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /**
bogdanm 0:9b334a45a8ff 2 ******************************************************************************
bogdanm 0:9b334a45a8ff 3 * @file stm32l4xx_hal_crc_ex.c
bogdanm 0:9b334a45a8ff 4 * @author MCD Application Team
bogdanm 0:9b334a45a8ff 5 * @version V1.0.0
bogdanm 0:9b334a45a8ff 6 * @date 26-June-2015
bogdanm 0:9b334a45a8ff 7 * @brief Extended CRC HAL module driver.
bogdanm 0:9b334a45a8ff 8 * This file provides firmware functions to manage the extended
bogdanm 0:9b334a45a8ff 9 * functionalities of the CRC peripheral.
bogdanm 0:9b334a45a8ff 10 *
bogdanm 0:9b334a45a8ff 11 @verbatim
bogdanm 0:9b334a45a8ff 12 ================================================================================
bogdanm 0:9b334a45a8ff 13 ##### How to use this driver #####
bogdanm 0:9b334a45a8ff 14 ================================================================================
bogdanm 0:9b334a45a8ff 15 [..]
bogdanm 0:9b334a45a8ff 16 (+) Set user-defined generating polynomial thru HAL_CRCEx_Polynomial_Set()
bogdanm 0:9b334a45a8ff 17 (+) Configure Input or Output data inversion
bogdanm 0:9b334a45a8ff 18
bogdanm 0:9b334a45a8ff 19 @endverbatim
bogdanm 0:9b334a45a8ff 20 ******************************************************************************
bogdanm 0:9b334a45a8ff 21 * @attention
bogdanm 0:9b334a45a8ff 22 *
bogdanm 0:9b334a45a8ff 23 * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
bogdanm 0:9b334a45a8ff 24 *
bogdanm 0:9b334a45a8ff 25 * Redistribution and use in source and binary forms, with or without modification,
bogdanm 0:9b334a45a8ff 26 * are permitted provided that the following conditions are met:
bogdanm 0:9b334a45a8ff 27 * 1. Redistributions of source code must retain the above copyright notice,
bogdanm 0:9b334a45a8ff 28 * this list of conditions and the following disclaimer.
bogdanm 0:9b334a45a8ff 29 * 2. Redistributions in binary form must reproduce the above copyright notice,
bogdanm 0:9b334a45a8ff 30 * this list of conditions and the following disclaimer in the documentation
bogdanm 0:9b334a45a8ff 31 * and/or other materials provided with the distribution.
bogdanm 0:9b334a45a8ff 32 * 3. Neither the name of STMicroelectronics nor the names of its contributors
bogdanm 0:9b334a45a8ff 33 * may be used to endorse or promote products derived from this software
bogdanm 0:9b334a45a8ff 34 * without specific prior written permission.
bogdanm 0:9b334a45a8ff 35 *
bogdanm 0:9b334a45a8ff 36 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
bogdanm 0:9b334a45a8ff 37 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
bogdanm 0:9b334a45a8ff 38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
bogdanm 0:9b334a45a8ff 39 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
bogdanm 0:9b334a45a8ff 40 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
bogdanm 0:9b334a45a8ff 41 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
bogdanm 0:9b334a45a8ff 42 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
bogdanm 0:9b334a45a8ff 43 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
bogdanm 0:9b334a45a8ff 44 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
bogdanm 0:9b334a45a8ff 45 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
bogdanm 0:9b334a45a8ff 46 *
bogdanm 0:9b334a45a8ff 47 ******************************************************************************
bogdanm 0:9b334a45a8ff 48 */
bogdanm 0:9b334a45a8ff 49
bogdanm 0:9b334a45a8ff 50 /* Includes ------------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 51 #include "stm32l4xx_hal.h"
bogdanm 0:9b334a45a8ff 52
bogdanm 0:9b334a45a8ff 53 /** @addtogroup STM32L4xx_HAL_Driver
bogdanm 0:9b334a45a8ff 54 * @{
bogdanm 0:9b334a45a8ff 55 */
bogdanm 0:9b334a45a8ff 56
bogdanm 0:9b334a45a8ff 57 /** @defgroup CRCEx CRCEx
bogdanm 0:9b334a45a8ff 58 * @brief CRC Extended HAL module driver
bogdanm 0:9b334a45a8ff 59 * @{
bogdanm 0:9b334a45a8ff 60 */
bogdanm 0:9b334a45a8ff 61
bogdanm 0:9b334a45a8ff 62 #ifdef HAL_CRC_MODULE_ENABLED
bogdanm 0:9b334a45a8ff 63
bogdanm 0:9b334a45a8ff 64 /* Private typedef -----------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 65 /* Private define ------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 66 /* Private macro -------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 67 /* Private variables ---------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 68 /* Private function prototypes -----------------------------------------------*/
bogdanm 0:9b334a45a8ff 69 /* Exported functions --------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 70
bogdanm 0:9b334a45a8ff 71 /** @defgroup CRCEx_Exported_Functions CRC Extended Exported Functions
bogdanm 0:9b334a45a8ff 72 * @{
bogdanm 0:9b334a45a8ff 73 */
bogdanm 0:9b334a45a8ff 74
bogdanm 0:9b334a45a8ff 75 /** @defgroup CRCEx_Group1 Extended Initialization/de-initialization functions
bogdanm 0:9b334a45a8ff 76 * @brief Extended Initialization and Configuration functions.
bogdanm 0:9b334a45a8ff 77 *
bogdanm 0:9b334a45a8ff 78 @verbatim
bogdanm 0:9b334a45a8ff 79 ===============================================================================
bogdanm 0:9b334a45a8ff 80 ##### Extended configuration functions #####
bogdanm 0:9b334a45a8ff 81 ===============================================================================
bogdanm 0:9b334a45a8ff 82 [..] This section provides functions allowing to:
bogdanm 0:9b334a45a8ff 83 (+) Configure the generating polynomial
bogdanm 0:9b334a45a8ff 84 (+) Configure the input data inversion
bogdanm 0:9b334a45a8ff 85 (+) Configure the output data inversion
bogdanm 0:9b334a45a8ff 86
bogdanm 0:9b334a45a8ff 87 @endverbatim
bogdanm 0:9b334a45a8ff 88 * @{
bogdanm 0:9b334a45a8ff 89 */
bogdanm 0:9b334a45a8ff 90
bogdanm 0:9b334a45a8ff 91
bogdanm 0:9b334a45a8ff 92 /**
bogdanm 0:9b334a45a8ff 93 * @brief Initialize the CRC polynomial if different from default one.
bogdanm 0:9b334a45a8ff 94 * @param hcrc: CRC handle
bogdanm 0:9b334a45a8ff 95 * @param Pol: CRC generating polynomial (7, 8, 16 or 32-bit long).
bogdanm 0:9b334a45a8ff 96 * This parameter is written in normal representation, e.g.
bogdanm 0:9b334a45a8ff 97 * @arg for a polynomial of degree 7, X^7 + X^6 + X^5 + X^2 + 1 is written 0x65
bogdanm 0:9b334a45a8ff 98 * @arg for a polynomial of degree 16, X^16 + X^12 + X^5 + 1 is written 0x1021
bogdanm 0:9b334a45a8ff 99 * @param PolyLength: CRC polynomial length.
bogdanm 0:9b334a45a8ff 100 * This parameter can be one of the following values:
bogdanm 0:9b334a45a8ff 101 * @arg CRC_POLYLENGTH_7B: 7-bit long CRC (generating polynomial of degree 7)
bogdanm 0:9b334a45a8ff 102 * @arg CRC_POLYLENGTH_8B: 8-bit long CRC (generating polynomial of degree 8)
bogdanm 0:9b334a45a8ff 103 * @arg CRC_POLYLENGTH_16B: 16-bit long CRC (generating polynomial of degree 16)
bogdanm 0:9b334a45a8ff 104 * @arg CRC_POLYLENGTH_32B: 32-bit long CRC (generating polynomial of degree 32)
bogdanm 0:9b334a45a8ff 105 * @retval HAL status
bogdanm 0:9b334a45a8ff 106 */
bogdanm 0:9b334a45a8ff 107 HAL_StatusTypeDef HAL_CRCEx_Polynomial_Set(CRC_HandleTypeDef *hcrc, uint32_t Pol, uint32_t PolyLength)
bogdanm 0:9b334a45a8ff 108 {
bogdanm 0:9b334a45a8ff 109 uint32_t msb = 31; /* polynomial degree is 32 at most, so msb is initialized to max value */
bogdanm 0:9b334a45a8ff 110
bogdanm 0:9b334a45a8ff 111 /* Check the parameters */
bogdanm 0:9b334a45a8ff 112 assert_param(IS_CRC_POL_LENGTH(PolyLength));
bogdanm 0:9b334a45a8ff 113
bogdanm 0:9b334a45a8ff 114 /* check polynomial definition vs polynomial size:
bogdanm 0:9b334a45a8ff 115 * polynomial length must be aligned with polynomial
bogdanm 0:9b334a45a8ff 116 * definition. HAL_ERROR is reported if Pol degree is
bogdanm 0:9b334a45a8ff 117 * larger than that indicated by PolyLength.
bogdanm 0:9b334a45a8ff 118 * Look for MSB position: msb will contain the degree of
bogdanm 0:9b334a45a8ff 119 * the second to the largest polynomial member. E.g., for
bogdanm 0:9b334a45a8ff 120 * X^7 + X^6 + X^5 + X^2 + 1, msb = 6. */
bogdanm 0:9b334a45a8ff 121 while (((Pol & (1U << msb)) == 0) && (msb-- > 0)) {}
bogdanm 0:9b334a45a8ff 122
bogdanm 0:9b334a45a8ff 123 switch (PolyLength)
bogdanm 0:9b334a45a8ff 124 {
bogdanm 0:9b334a45a8ff 125 case CRC_POLYLENGTH_7B:
bogdanm 0:9b334a45a8ff 126 if (msb >= HAL_CRC_LENGTH_7B)
bogdanm 0:9b334a45a8ff 127 {
bogdanm 0:9b334a45a8ff 128 return HAL_ERROR;
bogdanm 0:9b334a45a8ff 129 }
bogdanm 0:9b334a45a8ff 130 break;
bogdanm 0:9b334a45a8ff 131 case CRC_POLYLENGTH_8B:
bogdanm 0:9b334a45a8ff 132 if (msb >= HAL_CRC_LENGTH_8B)
bogdanm 0:9b334a45a8ff 133 {
bogdanm 0:9b334a45a8ff 134 return HAL_ERROR;
bogdanm 0:9b334a45a8ff 135 }
bogdanm 0:9b334a45a8ff 136 break;
bogdanm 0:9b334a45a8ff 137 case CRC_POLYLENGTH_16B:
bogdanm 0:9b334a45a8ff 138 if (msb >= HAL_CRC_LENGTH_16B)
bogdanm 0:9b334a45a8ff 139 {
bogdanm 0:9b334a45a8ff 140 return HAL_ERROR;
bogdanm 0:9b334a45a8ff 141 }
bogdanm 0:9b334a45a8ff 142 break;
bogdanm 0:9b334a45a8ff 143 case CRC_POLYLENGTH_32B:
bogdanm 0:9b334a45a8ff 144 /* no polynomial definition vs. polynomial length issue possible */
bogdanm 0:9b334a45a8ff 145 break;
bogdanm 0:9b334a45a8ff 146 default:
bogdanm 0:9b334a45a8ff 147 break;
bogdanm 0:9b334a45a8ff 148 }
bogdanm 0:9b334a45a8ff 149
bogdanm 0:9b334a45a8ff 150 /* set generating polynomial */
bogdanm 0:9b334a45a8ff 151 WRITE_REG(hcrc->Instance->POL, Pol);
bogdanm 0:9b334a45a8ff 152
bogdanm 0:9b334a45a8ff 153 /* set generating polynomial size */
bogdanm 0:9b334a45a8ff 154 MODIFY_REG(hcrc->Instance->CR, CRC_CR_POLYSIZE, PolyLength);
bogdanm 0:9b334a45a8ff 155
bogdanm 0:9b334a45a8ff 156 /* Return function status */
bogdanm 0:9b334a45a8ff 157 return HAL_OK;
bogdanm 0:9b334a45a8ff 158 }
bogdanm 0:9b334a45a8ff 159
bogdanm 0:9b334a45a8ff 160 /**
bogdanm 0:9b334a45a8ff 161 * @brief Set the Reverse Input data mode.
bogdanm 0:9b334a45a8ff 162 * @param hcrc: CRC handle
bogdanm 0:9b334a45a8ff 163 * @param InputReverseMode: Input Data inversion mode.
bogdanm 0:9b334a45a8ff 164 * This parameter can be one of the following values:
bogdanm 0:9b334a45a8ff 165 * @arg CRC_INPUTDATA_NOINVERSION: no change in bit order (default value)
bogdanm 0:9b334a45a8ff 166 * @arg CRC_INPUTDATA_INVERSION_BYTE: Byte-wise bit reversal
bogdanm 0:9b334a45a8ff 167 * @arg CRC_INPUTDATA_INVERSION_HALFWORD: HalfWord-wise bit reversal
bogdanm 0:9b334a45a8ff 168 * @arg CRC_INPUTDATA_INVERSION_WORD: Word-wise bit reversal
bogdanm 0:9b334a45a8ff 169 * @retval HAL status
bogdanm 0:9b334a45a8ff 170 */
bogdanm 0:9b334a45a8ff 171 HAL_StatusTypeDef HAL_CRCEx_Input_Data_Reverse(CRC_HandleTypeDef *hcrc, uint32_t InputReverseMode)
bogdanm 0:9b334a45a8ff 172 {
bogdanm 0:9b334a45a8ff 173 /* Check the parameters */
bogdanm 0:9b334a45a8ff 174 assert_param(IS_CRC_INPUTDATA_INVERSION_MODE(InputReverseMode));
bogdanm 0:9b334a45a8ff 175
bogdanm 0:9b334a45a8ff 176 /* Change CRC peripheral state */
bogdanm 0:9b334a45a8ff 177 hcrc->State = HAL_CRC_STATE_BUSY;
bogdanm 0:9b334a45a8ff 178
bogdanm 0:9b334a45a8ff 179 /* set input data inversion mode */
bogdanm 0:9b334a45a8ff 180 MODIFY_REG(hcrc->Instance->CR, CRC_CR_REV_IN, InputReverseMode);
bogdanm 0:9b334a45a8ff 181 /* Change CRC peripheral state */
bogdanm 0:9b334a45a8ff 182 hcrc->State = HAL_CRC_STATE_READY;
bogdanm 0:9b334a45a8ff 183
bogdanm 0:9b334a45a8ff 184 /* Return function status */
bogdanm 0:9b334a45a8ff 185 return HAL_OK;
bogdanm 0:9b334a45a8ff 186 }
bogdanm 0:9b334a45a8ff 187
bogdanm 0:9b334a45a8ff 188 /**
bogdanm 0:9b334a45a8ff 189 * @brief Set the Reverse Output data mode.
bogdanm 0:9b334a45a8ff 190 * @param hcrc: CRC handle
bogdanm 0:9b334a45a8ff 191 * @param OutputReverseMode: Output Data inversion mode.
bogdanm 0:9b334a45a8ff 192 * This parameter can be one of the following values:
bogdanm 0:9b334a45a8ff 193 * @arg CRC_OUTPUTDATA_INVERSION_DISABLE: no CRC inversion (default value)
bogdanm 0:9b334a45a8ff 194 * @arg CRC_OUTPUTDATA_INVERSION_ENABLE: bit-level inversion (e.g. for a 8-bit CRC: 0xB5 becomes 0xAD)
bogdanm 0:9b334a45a8ff 195 * @retval HAL status
bogdanm 0:9b334a45a8ff 196 */
bogdanm 0:9b334a45a8ff 197 HAL_StatusTypeDef HAL_CRCEx_Output_Data_Reverse(CRC_HandleTypeDef *hcrc, uint32_t OutputReverseMode)
bogdanm 0:9b334a45a8ff 198 {
bogdanm 0:9b334a45a8ff 199 /* Check the parameters */
bogdanm 0:9b334a45a8ff 200 assert_param(IS_CRC_OUTPUTDATA_INVERSION_MODE(OutputReverseMode));
bogdanm 0:9b334a45a8ff 201
bogdanm 0:9b334a45a8ff 202 /* Change CRC peripheral state */
bogdanm 0:9b334a45a8ff 203 hcrc->State = HAL_CRC_STATE_BUSY;
bogdanm 0:9b334a45a8ff 204
bogdanm 0:9b334a45a8ff 205 /* set output data inversion mode */
bogdanm 0:9b334a45a8ff 206 MODIFY_REG(hcrc->Instance->CR, CRC_CR_REV_OUT, OutputReverseMode);
bogdanm 0:9b334a45a8ff 207
bogdanm 0:9b334a45a8ff 208 /* Change CRC peripheral state */
bogdanm 0:9b334a45a8ff 209 hcrc->State = HAL_CRC_STATE_READY;
bogdanm 0:9b334a45a8ff 210
bogdanm 0:9b334a45a8ff 211 /* Return function status */
bogdanm 0:9b334a45a8ff 212 return HAL_OK;
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
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 #endif /* HAL_CRC_MODULE_ENABLED */
bogdanm 0:9b334a45a8ff 229 /**
bogdanm 0:9b334a45a8ff 230 * @}
bogdanm 0:9b334a45a8ff 231 */
bogdanm 0:9b334a45a8ff 232
bogdanm 0:9b334a45a8ff 233 /**
bogdanm 0:9b334a45a8ff 234 * @}
bogdanm 0:9b334a45a8ff 235 */
bogdanm 0:9b334a45a8ff 236
bogdanm 0:9b334a45a8ff 237 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/