mbed official / mbed-dev

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

cmsis/BUILD/mbed/TARGET_TB_SENSE_1/TOOLCHAIN_GCC_ARM/em_gpcrc.h@189:f392fc9709a3, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 22:31:08 2019 +0000
Revision:
189:f392fc9709a3
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 189:f392fc9709a3 1 /***************************************************************************//**
AnnaBridge 189:f392fc9709a3 2 * @file
AnnaBridge 189:f392fc9709a3 3 * @brief General Purpose Cyclic Redundancy Check (GPCRC) API.
AnnaBridge 189:f392fc9709a3 4 * @version 5.3.3
AnnaBridge 189:f392fc9709a3 5 *******************************************************************************
AnnaBridge 189:f392fc9709a3 6 * # License
AnnaBridge 189:f392fc9709a3 7 * <b>Copyright 2016 Silicon Laboratories, Inc. http://www.silabs.com</b>
AnnaBridge 189:f392fc9709a3 8 *******************************************************************************
AnnaBridge 189:f392fc9709a3 9 *
AnnaBridge 189:f392fc9709a3 10 * Permission is granted to anyone to use this software for any purpose,
AnnaBridge 189:f392fc9709a3 11 * including commercial applications, and to alter it and redistribute it
AnnaBridge 189:f392fc9709a3 12 * freely, subject to the following restrictions:
AnnaBridge 189:f392fc9709a3 13 *
AnnaBridge 189:f392fc9709a3 14 * 1. The origin of this software must not be misrepresented; you must not
AnnaBridge 189:f392fc9709a3 15 * claim that you wrote the original software.
AnnaBridge 189:f392fc9709a3 16 * 2. Altered source versions must be plainly marked as such, and must not be
AnnaBridge 189:f392fc9709a3 17 * misrepresented as being the original software.
AnnaBridge 189:f392fc9709a3 18 * 3. This notice may not be removed or altered from any source distribution.
AnnaBridge 189:f392fc9709a3 19 *
AnnaBridge 189:f392fc9709a3 20 * DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Silicon Labs has no
AnnaBridge 189:f392fc9709a3 21 * obligation to support this Software. Silicon Labs is providing the
AnnaBridge 189:f392fc9709a3 22 * Software "AS IS", with no express or implied warranties of any kind,
AnnaBridge 189:f392fc9709a3 23 * including, but not limited to, any implied warranties of merchantability
AnnaBridge 189:f392fc9709a3 24 * or fitness for any particular purpose or warranties against infringement
AnnaBridge 189:f392fc9709a3 25 * of any proprietary rights of a third party.
AnnaBridge 189:f392fc9709a3 26 *
AnnaBridge 189:f392fc9709a3 27 * Silicon Labs will not be liable for any consequential, incidental, or
AnnaBridge 189:f392fc9709a3 28 * special damages, or any other relief, or for any claim by any third party,
AnnaBridge 189:f392fc9709a3 29 * arising from your use of this Software.
AnnaBridge 189:f392fc9709a3 30 *
AnnaBridge 189:f392fc9709a3 31 ******************************************************************************/
AnnaBridge 189:f392fc9709a3 32
AnnaBridge 189:f392fc9709a3 33 #ifndef EM_GPCRC_H
AnnaBridge 189:f392fc9709a3 34 #define EM_GPCRC_H
AnnaBridge 189:f392fc9709a3 35
AnnaBridge 189:f392fc9709a3 36 #include "em_bus.h"
AnnaBridge 189:f392fc9709a3 37 #include "em_device.h"
AnnaBridge 189:f392fc9709a3 38 #if defined(GPCRC_PRESENT) && (GPCRC_COUNT > 0)
AnnaBridge 189:f392fc9709a3 39
AnnaBridge 189:f392fc9709a3 40 #include <stdint.h>
AnnaBridge 189:f392fc9709a3 41 #include <stdbool.h>
AnnaBridge 189:f392fc9709a3 42
AnnaBridge 189:f392fc9709a3 43 #ifdef __cplusplus
AnnaBridge 189:f392fc9709a3 44 extern "C" {
AnnaBridge 189:f392fc9709a3 45 #endif
AnnaBridge 189:f392fc9709a3 46
AnnaBridge 189:f392fc9709a3 47 /***************************************************************************//**
AnnaBridge 189:f392fc9709a3 48 * @addtogroup emlib
AnnaBridge 189:f392fc9709a3 49 * @{
AnnaBridge 189:f392fc9709a3 50 ******************************************************************************/
AnnaBridge 189:f392fc9709a3 51
AnnaBridge 189:f392fc9709a3 52 /***************************************************************************//**
AnnaBridge 189:f392fc9709a3 53 * @addtogroup GPCRC
AnnaBridge 189:f392fc9709a3 54 * @brief General Purpose Cyclic Redundancy Check (GPCRC) API.
AnnaBridge 189:f392fc9709a3 55 *
AnnaBridge 189:f392fc9709a3 56 * @details
AnnaBridge 189:f392fc9709a3 57 * The GPCRC API functions provide full support for the GPCRC peripheral.
AnnaBridge 189:f392fc9709a3 58 *
AnnaBridge 189:f392fc9709a3 59 * The GPCRC module is a peripheral that implements a Cyclic Redundancy Check
AnnaBridge 189:f392fc9709a3 60 * (CRC) function. It supports a fixed 32-bit polynomial and a user
AnnaBridge 189:f392fc9709a3 61 * configurable 16-bit polynomial. The fixed 32-bit polynomial is the commonly
AnnaBridge 189:f392fc9709a3 62 * used IEEE 802.3 polynomial 0x04C11DB7.
AnnaBridge 189:f392fc9709a3 63 *
AnnaBridge 189:f392fc9709a3 64 * When using a 16-bit polynomial it's up to the user to choose a polynomial
AnnaBridge 189:f392fc9709a3 65 * that fits the application. Commonly used 16-bit polynomial are 0x1021
AnnaBridge 189:f392fc9709a3 66 * (CCITT-16), 0x3D65 (IEC16-MBus), and 0x8005 (ZigBee, 802.15.4, and USB).
AnnaBridge 189:f392fc9709a3 67 * See this link for other polynomials:
AnnaBridge 189:f392fc9709a3 68 * https://en.wikipedia.org/wiki/Cyclic_redundancy_check
AnnaBridge 189:f392fc9709a3 69 *
AnnaBridge 189:f392fc9709a3 70 * Before a CRC calculation can begin it is important to call the
AnnaBridge 189:f392fc9709a3 71 * @ref GPCRC_Start function. This function will reset the CRC calculation
AnnaBridge 189:f392fc9709a3 72 * by copying the configured initialization value over to the CRC data register.
AnnaBridge 189:f392fc9709a3 73 *
AnnaBridge 189:f392fc9709a3 74 * There are two ways of sending input data to the GPCRC. You can either write
AnnaBridge 189:f392fc9709a3 75 * the input data into the input data register using the input functions
AnnaBridge 189:f392fc9709a3 76 * @ref GPCRC_InputU32, @ref GPCRC_InputU16 and @ref GPCRC_InputU8, or the
AnnaBridge 189:f392fc9709a3 77 * user can setup the @ref LDMA to transfer data directly to one of the GPCRC
AnnaBridge 189:f392fc9709a3 78 * input data registers.
AnnaBridge 189:f392fc9709a3 79 *
AnnaBridge 189:f392fc9709a3 80 * <b> Examples of GPCRC usage: </b>
AnnaBridge 189:f392fc9709a3 81 *
AnnaBridge 189:f392fc9709a3 82 * A CRC-32 Calculation:
AnnaBridge 189:f392fc9709a3 83 *
AnnaBridge 189:f392fc9709a3 84 * @include em_gpcrc_crc32.c
AnnaBridge 189:f392fc9709a3 85 *
AnnaBridge 189:f392fc9709a3 86 * A CRC-16 Calculation:
AnnaBridge 189:f392fc9709a3 87 *
AnnaBridge 189:f392fc9709a3 88 * @include em_gpcrc_crc16.c
AnnaBridge 189:f392fc9709a3 89 *
AnnaBridge 189:f392fc9709a3 90 * A CRC-CCITT calculation:
AnnaBridge 189:f392fc9709a3 91 *
AnnaBridge 189:f392fc9709a3 92 * @include em_gpcrc_ccit.c
AnnaBridge 189:f392fc9709a3 93 *
AnnaBridge 189:f392fc9709a3 94 * @{
AnnaBridge 189:f392fc9709a3 95 ******************************************************************************/
AnnaBridge 189:f392fc9709a3 96
AnnaBridge 189:f392fc9709a3 97 /*******************************************************************************
AnnaBridge 189:f392fc9709a3 98 ******************************* STRUCTS ***********************************
AnnaBridge 189:f392fc9709a3 99 ******************************************************************************/
AnnaBridge 189:f392fc9709a3 100
AnnaBridge 189:f392fc9709a3 101 /** CRC initialization structure. */
AnnaBridge 189:f392fc9709a3 102 typedef struct {
AnnaBridge 189:f392fc9709a3 103 /**
AnnaBridge 189:f392fc9709a3 104 * CRC polynomial value. The GPCRC support either a fixed 32-bit polynomial
AnnaBridge 189:f392fc9709a3 105 * or a user configurable 16 bit polynomial. The fixed 32-bit polynomial
AnnaBridge 189:f392fc9709a3 106 * is the one used in IEEE 802.3, which has the value 0x04C11DB7. To use the
AnnaBridge 189:f392fc9709a3 107 * 32-bit fixed polynomial just assign 0x04C11DB7 to the crcPoly field. To use
AnnaBridge 189:f392fc9709a3 108 * a 16-bit polynomial assign a value to crcPoly where the upper 16 bit's are
AnnaBridge 189:f392fc9709a3 109 * zero.
AnnaBridge 189:f392fc9709a3 110 *
AnnaBridge 189:f392fc9709a3 111 * The polynomial should be written in normal bit order. So for instance
AnnaBridge 189:f392fc9709a3 112 * if you want to use the CRC-16 polynomial X^16 + X^15 + X^2 + 1 then we
AnnaBridge 189:f392fc9709a3 113 * can first convert it to hex representation and remove the highest order term
AnnaBridge 189:f392fc9709a3 114 * of the polynomial. This would give us 0x8005 as the value to write into
AnnaBridge 189:f392fc9709a3 115 * crcPoly.
AnnaBridge 189:f392fc9709a3 116 */
AnnaBridge 189:f392fc9709a3 117 uint32_t crcPoly;
AnnaBridge 189:f392fc9709a3 118
AnnaBridge 189:f392fc9709a3 119 /**
AnnaBridge 189:f392fc9709a3 120 * CRC initialization value. This value is assigned to the GPCRC_INIT register.
AnnaBridge 189:f392fc9709a3 121 * The initValue is loaded into the data register when calling the
AnnaBridge 189:f392fc9709a3 122 * @ref GPCRC_Start function or when one of the data registers are read
AnnaBridge 189:f392fc9709a3 123 * while @ref autoInit is enabled.
AnnaBridge 189:f392fc9709a3 124 */
AnnaBridge 189:f392fc9709a3 125 uint32_t initValue;
AnnaBridge 189:f392fc9709a3 126
AnnaBridge 189:f392fc9709a3 127 /**
AnnaBridge 189:f392fc9709a3 128 * Reverse byte order. This has an effect when sending a 32-bit word or
AnnaBridge 189:f392fc9709a3 129 * 16-bit half word input to the CRC calculation. When set to true the input
AnnaBridge 189:f392fc9709a3 130 * bytes are reversed before entering the CRC calculation. When set to
AnnaBridge 189:f392fc9709a3 131 * false the input bytes stay in the same order.
AnnaBridge 189:f392fc9709a3 132 */
AnnaBridge 189:f392fc9709a3 133 bool reverseByteOrder;
AnnaBridge 189:f392fc9709a3 134
AnnaBridge 189:f392fc9709a3 135 /**
AnnaBridge 189:f392fc9709a3 136 * Reverse bits within each input byte. This setting enables or disable byte
AnnaBridge 189:f392fc9709a3 137 * level bit reversal. When byte-level bit reversal is enabled then each byte
AnnaBridge 189:f392fc9709a3 138 * of input data will be reversed before entering the CRC calculation.
AnnaBridge 189:f392fc9709a3 139 */
AnnaBridge 189:f392fc9709a3 140 bool reverseBits;
AnnaBridge 189:f392fc9709a3 141
AnnaBridge 189:f392fc9709a3 142 /**
AnnaBridge 189:f392fc9709a3 143 * Enable/disable byte mode. When byte mode is enabled then all input
AnnaBridge 189:f392fc9709a3 144 * is treated as single byte input, even though the input is a 32-bit word
AnnaBridge 189:f392fc9709a3 145 * or a 16-bit half word. Only the least significant byte of the data-word
AnnaBridge 189:f392fc9709a3 146 * will be used for CRC calculation for all writes.
AnnaBridge 189:f392fc9709a3 147 */
AnnaBridge 189:f392fc9709a3 148 bool enableByteMode;
AnnaBridge 189:f392fc9709a3 149
AnnaBridge 189:f392fc9709a3 150 /**
AnnaBridge 189:f392fc9709a3 151 * Enable automatic initialization by re-seeding the CRC result based on
AnnaBridge 189:f392fc9709a3 152 * the init value after reading one of the CRC data registers
AnnaBridge 189:f392fc9709a3 153 */
AnnaBridge 189:f392fc9709a3 154 bool autoInit;
AnnaBridge 189:f392fc9709a3 155
AnnaBridge 189:f392fc9709a3 156 /** Enable/disable GPCRC when initialization is completed. */
AnnaBridge 189:f392fc9709a3 157 bool enable;
AnnaBridge 189:f392fc9709a3 158 } GPCRC_Init_TypeDef;
AnnaBridge 189:f392fc9709a3 159
AnnaBridge 189:f392fc9709a3 160 /** Default configuration for GPCRC_Init_TypeDef structure. */
AnnaBridge 189:f392fc9709a3 161 #define GPCRC_INIT_DEFAULT \
AnnaBridge 189:f392fc9709a3 162 { \
AnnaBridge 189:f392fc9709a3 163 0x04C11DB7UL, /* CRC32 Polynomial value. */ \
AnnaBridge 189:f392fc9709a3 164 0x00000000UL, /* Initialization value. */ \
AnnaBridge 189:f392fc9709a3 165 false, /* Byte order is normal. */ \
AnnaBridge 189:f392fc9709a3 166 false, /* Bit order is not reversed on output. */ \
AnnaBridge 189:f392fc9709a3 167 false, /* Disable byte mode. */ \
AnnaBridge 189:f392fc9709a3 168 false, /* Disable automatic init on data read. */ \
AnnaBridge 189:f392fc9709a3 169 true, /* Enable GPCRC. */ \
AnnaBridge 189:f392fc9709a3 170 }
AnnaBridge 189:f392fc9709a3 171
AnnaBridge 189:f392fc9709a3 172 /*******************************************************************************
AnnaBridge 189:f392fc9709a3 173 ****************************** PROTOTYPES *********************************
AnnaBridge 189:f392fc9709a3 174 ******************************************************************************/
AnnaBridge 189:f392fc9709a3 175
AnnaBridge 189:f392fc9709a3 176 void GPCRC_Init(GPCRC_TypeDef * gpcrc, const GPCRC_Init_TypeDef * init);
AnnaBridge 189:f392fc9709a3 177 void GPCRC_Reset(GPCRC_TypeDef * gpcrc);
AnnaBridge 189:f392fc9709a3 178
AnnaBridge 189:f392fc9709a3 179 /***************************************************************************//**
AnnaBridge 189:f392fc9709a3 180 * @brief
AnnaBridge 189:f392fc9709a3 181 * Enable/disable GPCRC.
AnnaBridge 189:f392fc9709a3 182 *
AnnaBridge 189:f392fc9709a3 183 * @param[in] gpcrc
AnnaBridge 189:f392fc9709a3 184 * Pointer to GPCRC peripheral register block.
AnnaBridge 189:f392fc9709a3 185 *
AnnaBridge 189:f392fc9709a3 186 * @param[in] enable
AnnaBridge 189:f392fc9709a3 187 * True to enable GPCRC, false to disable.
AnnaBridge 189:f392fc9709a3 188 ******************************************************************************/
AnnaBridge 189:f392fc9709a3 189 __STATIC_INLINE void GPCRC_Enable(GPCRC_TypeDef * gpcrc, bool enable)
AnnaBridge 189:f392fc9709a3 190 {
AnnaBridge 189:f392fc9709a3 191 BUS_RegBitWrite(&gpcrc->CTRL, _GPCRC_CTRL_EN_SHIFT, enable);
AnnaBridge 189:f392fc9709a3 192 }
AnnaBridge 189:f392fc9709a3 193
AnnaBridge 189:f392fc9709a3 194 /***************************************************************************//**
AnnaBridge 189:f392fc9709a3 195 * @brief
AnnaBridge 189:f392fc9709a3 196 * Issues a command to initialize the CRC calculation.
AnnaBridge 189:f392fc9709a3 197 *
AnnaBridge 189:f392fc9709a3 198 * @details
AnnaBridge 189:f392fc9709a3 199 * This function issues the command INIT in GPCRC_CMD that initializes the
AnnaBridge 189:f392fc9709a3 200 * CRC calculation by writing the initial values to the DATA register.
AnnaBridge 189:f392fc9709a3 201 *
AnnaBridge 189:f392fc9709a3 202 * @param[in] gpcrc
AnnaBridge 189:f392fc9709a3 203 * Pointer to GPCRC peripheral register block.
AnnaBridge 189:f392fc9709a3 204 ******************************************************************************/
AnnaBridge 189:f392fc9709a3 205 __STATIC_INLINE void GPCRC_Start(GPCRC_TypeDef * gpcrc)
AnnaBridge 189:f392fc9709a3 206 {
AnnaBridge 189:f392fc9709a3 207 gpcrc->CMD = GPCRC_CMD_INIT;
AnnaBridge 189:f392fc9709a3 208 }
AnnaBridge 189:f392fc9709a3 209
AnnaBridge 189:f392fc9709a3 210 /***************************************************************************//**
AnnaBridge 189:f392fc9709a3 211 * @brief
AnnaBridge 189:f392fc9709a3 212 * Set the initialization value of the CRC.
AnnaBridge 189:f392fc9709a3 213 *
AnnaBridge 189:f392fc9709a3 214 * @param [in] initValue
AnnaBridge 189:f392fc9709a3 215 * The value to use to initialize a CRC calculation. This value is moved into
AnnaBridge 189:f392fc9709a3 216 * the data register when calling @ref GPCRC_Start
AnnaBridge 189:f392fc9709a3 217 *
AnnaBridge 189:f392fc9709a3 218 * @param[in] gpcrc
AnnaBridge 189:f392fc9709a3 219 * Pointer to GPCRC peripheral register block.
AnnaBridge 189:f392fc9709a3 220 ******************************************************************************/
AnnaBridge 189:f392fc9709a3 221 __STATIC_INLINE void GPCRC_InitValueSet(GPCRC_TypeDef * gpcrc, uint32_t initValue)
AnnaBridge 189:f392fc9709a3 222 {
AnnaBridge 189:f392fc9709a3 223 gpcrc->INIT = initValue;
AnnaBridge 189:f392fc9709a3 224 }
AnnaBridge 189:f392fc9709a3 225
AnnaBridge 189:f392fc9709a3 226 /***************************************************************************//**
AnnaBridge 189:f392fc9709a3 227 * @brief
AnnaBridge 189:f392fc9709a3 228 * Writes a 32 bit value to the input data register of the CRC.
AnnaBridge 189:f392fc9709a3 229 *
AnnaBridge 189:f392fc9709a3 230 * @details
AnnaBridge 189:f392fc9709a3 231 * Use this function to write a 32 bit input data to the CRC. The CRC
AnnaBridge 189:f392fc9709a3 232 * calculation is based on the provided input data using the configured
AnnaBridge 189:f392fc9709a3 233 * CRC polynomial.
AnnaBridge 189:f392fc9709a3 234 *
AnnaBridge 189:f392fc9709a3 235 * @param[in] gpcrc
AnnaBridge 189:f392fc9709a3 236 * Pointer to GPCRC peripheral register block.
AnnaBridge 189:f392fc9709a3 237 *
AnnaBridge 189:f392fc9709a3 238 * @param[in] data
AnnaBridge 189:f392fc9709a3 239 * Data to be written to the input data register.
AnnaBridge 189:f392fc9709a3 240 ******************************************************************************/
AnnaBridge 189:f392fc9709a3 241 __STATIC_INLINE void GPCRC_InputU32(GPCRC_TypeDef * gpcrc, uint32_t data)
AnnaBridge 189:f392fc9709a3 242 {
AnnaBridge 189:f392fc9709a3 243 gpcrc->INPUTDATA = data;
AnnaBridge 189:f392fc9709a3 244 }
AnnaBridge 189:f392fc9709a3 245
AnnaBridge 189:f392fc9709a3 246 /***************************************************************************//**
AnnaBridge 189:f392fc9709a3 247 * @brief
AnnaBridge 189:f392fc9709a3 248 * Writes a 16 bit value to the input data register of the CRC.
AnnaBridge 189:f392fc9709a3 249 *
AnnaBridge 189:f392fc9709a3 250 * @details
AnnaBridge 189:f392fc9709a3 251 * Use this function to write a 16 bit input data to the CRC. The CRC
AnnaBridge 189:f392fc9709a3 252 * calculation is based on the provided input data using the configured
AnnaBridge 189:f392fc9709a3 253 * CRC polynomial.
AnnaBridge 189:f392fc9709a3 254 *
AnnaBridge 189:f392fc9709a3 255 * @param[in] gpcrc
AnnaBridge 189:f392fc9709a3 256 * Pointer to GPCRC peripheral register block.
AnnaBridge 189:f392fc9709a3 257 *
AnnaBridge 189:f392fc9709a3 258 * @param[in] data
AnnaBridge 189:f392fc9709a3 259 * Data to be written to the input data register.
AnnaBridge 189:f392fc9709a3 260 ******************************************************************************/
AnnaBridge 189:f392fc9709a3 261 __STATIC_INLINE void GPCRC_InputU16(GPCRC_TypeDef * gpcrc, uint16_t data)
AnnaBridge 189:f392fc9709a3 262 {
AnnaBridge 189:f392fc9709a3 263 gpcrc->INPUTDATAHWORD = data;
AnnaBridge 189:f392fc9709a3 264 }
AnnaBridge 189:f392fc9709a3 265
AnnaBridge 189:f392fc9709a3 266 /***************************************************************************//**
AnnaBridge 189:f392fc9709a3 267 * @brief
AnnaBridge 189:f392fc9709a3 268 * Writes an 8 bit value to the input data register of the CRC.
AnnaBridge 189:f392fc9709a3 269 *
AnnaBridge 189:f392fc9709a3 270 * @details
AnnaBridge 189:f392fc9709a3 271 * Use this function to write a 8 bit input data to the CRC. The CRC
AnnaBridge 189:f392fc9709a3 272 * calculation is based on the provided input data using the configured
AnnaBridge 189:f392fc9709a3 273 * CRC polynomial.
AnnaBridge 189:f392fc9709a3 274 *
AnnaBridge 189:f392fc9709a3 275 * @param[in] gpcrc
AnnaBridge 189:f392fc9709a3 276 * Pointer to GPCRC peripheral register block.
AnnaBridge 189:f392fc9709a3 277 *
AnnaBridge 189:f392fc9709a3 278 * @param[in] data
AnnaBridge 189:f392fc9709a3 279 * Data to be written to the input data register.
AnnaBridge 189:f392fc9709a3 280 ******************************************************************************/
AnnaBridge 189:f392fc9709a3 281 __STATIC_INLINE void GPCRC_InputU8(GPCRC_TypeDef * gpcrc, uint8_t data)
AnnaBridge 189:f392fc9709a3 282 {
AnnaBridge 189:f392fc9709a3 283 gpcrc->INPUTDATABYTE = data;
AnnaBridge 189:f392fc9709a3 284 }
AnnaBridge 189:f392fc9709a3 285
AnnaBridge 189:f392fc9709a3 286 /***************************************************************************//**
AnnaBridge 189:f392fc9709a3 287 * @brief
AnnaBridge 189:f392fc9709a3 288 * Reads the data register of the CRC.
AnnaBridge 189:f392fc9709a3 289 *
AnnaBridge 189:f392fc9709a3 290 * @details
AnnaBridge 189:f392fc9709a3 291 * Use this function to read the calculated CRC value.
AnnaBridge 189:f392fc9709a3 292 *
AnnaBridge 189:f392fc9709a3 293 * @param[in] gpcrc
AnnaBridge 189:f392fc9709a3 294 * Pointer to GPCRC peripheral register block.
AnnaBridge 189:f392fc9709a3 295 *
AnnaBridge 189:f392fc9709a3 296 * @return
AnnaBridge 189:f392fc9709a3 297 * Content of the CRC data register.
AnnaBridge 189:f392fc9709a3 298 ******************************************************************************/
AnnaBridge 189:f392fc9709a3 299 __STATIC_INLINE uint32_t GPCRC_DataRead(GPCRC_TypeDef * gpcrc)
AnnaBridge 189:f392fc9709a3 300 {
AnnaBridge 189:f392fc9709a3 301 return gpcrc->DATA;
AnnaBridge 189:f392fc9709a3 302 }
AnnaBridge 189:f392fc9709a3 303
AnnaBridge 189:f392fc9709a3 304 /***************************************************************************//**
AnnaBridge 189:f392fc9709a3 305 * @brief
AnnaBridge 189:f392fc9709a3 306 * Reads the data register of the CRC bit reversed.
AnnaBridge 189:f392fc9709a3 307 *
AnnaBridge 189:f392fc9709a3 308 * @details
AnnaBridge 189:f392fc9709a3 309 * Use this function to read the calculated CRC value bit reversed. When
AnnaBridge 189:f392fc9709a3 310 * using a 32-bit polynomial then bits [31:0] are reversed, when using a
AnnaBridge 189:f392fc9709a3 311 * 16-bit polynomial then bits [15:0] are reversed.
AnnaBridge 189:f392fc9709a3 312 *
AnnaBridge 189:f392fc9709a3 313 * @param[in] gpcrc
AnnaBridge 189:f392fc9709a3 314 * Pointer to GPCRC peripheral register block.
AnnaBridge 189:f392fc9709a3 315 *
AnnaBridge 189:f392fc9709a3 316 * @return
AnnaBridge 189:f392fc9709a3 317 * Content of the CRC data register bit reversed.
AnnaBridge 189:f392fc9709a3 318 ******************************************************************************/
AnnaBridge 189:f392fc9709a3 319 __STATIC_INLINE uint32_t GPCRC_DataReadBitReversed(GPCRC_TypeDef * gpcrc)
AnnaBridge 189:f392fc9709a3 320 {
AnnaBridge 189:f392fc9709a3 321 return gpcrc->DATAREV;
AnnaBridge 189:f392fc9709a3 322 }
AnnaBridge 189:f392fc9709a3 323
AnnaBridge 189:f392fc9709a3 324 /***************************************************************************//**
AnnaBridge 189:f392fc9709a3 325 * @brief
AnnaBridge 189:f392fc9709a3 326 * Reads the data register of the CRC byte reversed.
AnnaBridge 189:f392fc9709a3 327 *
AnnaBridge 189:f392fc9709a3 328 * @details
AnnaBridge 189:f392fc9709a3 329 * Use this function to read the calculated CRC value byte reversed.
AnnaBridge 189:f392fc9709a3 330 *
AnnaBridge 189:f392fc9709a3 331 * @param[in] gpcrc
AnnaBridge 189:f392fc9709a3 332 * Pointer to GPCRC peripheral register block.
AnnaBridge 189:f392fc9709a3 333 *
AnnaBridge 189:f392fc9709a3 334 * @return
AnnaBridge 189:f392fc9709a3 335 * Content of the CRC data register byte reversed.
AnnaBridge 189:f392fc9709a3 336 ******************************************************************************/
AnnaBridge 189:f392fc9709a3 337 __STATIC_INLINE uint32_t GPCRC_DataReadByteReversed(GPCRC_TypeDef * gpcrc)
AnnaBridge 189:f392fc9709a3 338 {
AnnaBridge 189:f392fc9709a3 339 return gpcrc->DATABYTEREV;
AnnaBridge 189:f392fc9709a3 340 }
AnnaBridge 189:f392fc9709a3 341
AnnaBridge 189:f392fc9709a3 342 /** @} (end addtogroup GPCRC) */
AnnaBridge 189:f392fc9709a3 343 /** @} (end addtogroup emlib) */
AnnaBridge 189:f392fc9709a3 344
AnnaBridge 189:f392fc9709a3 345 #ifdef __cplusplus
AnnaBridge 189:f392fc9709a3 346 }
AnnaBridge 189:f392fc9709a3 347 #endif
AnnaBridge 189:f392fc9709a3 348
AnnaBridge 189:f392fc9709a3 349 #endif /* defined(GPCRC_COUNT) && (GPCRC_COUNT > 0) */
AnnaBridge 189:f392fc9709a3 350 #endif /* EM_GPCRC_H */