Janek Mann / mbed-src-openwear

mbed library sources modified for open wear

Dependents:   openwear-lifelogger-example

Fork of mbed-src by mbed official

targets/cmsis/TARGET_STM/TARGET_NUCLEO_F103RB/stm32f10x_crc.c@310:6188e0254baa, 2014-09-16 (annotated)

Committer:
janekm
Date:
Tue Sep 16 22:42:01 2014 +0000
Revision:
310:6188e0254baa
Parent:
84:f54042cbc282 
N/A

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 52:a51c77007319 1 /**
mbed_official 52:a51c77007319 2 ******************************************************************************
mbed_official 52:a51c77007319 3 * @file stm32f10x_crc.c
mbed_official 52:a51c77007319 4 * @author MCD Application Team
mbed_official 84:f54042cbc282 5 * @version V3.6.1
mbed_official 84:f54042cbc282 6 * @date 05-March-2012
mbed_official 52:a51c77007319 7 * @brief This file provides all the CRC firmware functions.
mbed_official 70:c1fbde68b492 8 *******************************************************************************
mbed_official 70:c1fbde68b492 9 * Copyright (c) 2014, STMicroelectronics
mbed_official 70:c1fbde68b492 10 * All rights reserved.
mbed_official 70:c1fbde68b492 11 *
mbed_official 70:c1fbde68b492 12 * Redistribution and use in source and binary forms, with or without
mbed_official 70:c1fbde68b492 13 * modification, are permitted provided that the following conditions are met:
mbed_official 70:c1fbde68b492 14 *
mbed_official 70:c1fbde68b492 15 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 70:c1fbde68b492 16 * this list of conditions and the following disclaimer.
mbed_official 70:c1fbde68b492 17 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 70:c1fbde68b492 18 * this list of conditions and the following disclaimer in the documentation
mbed_official 70:c1fbde68b492 19 * and/or other materials provided with the distribution.
mbed_official 70:c1fbde68b492 20 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 70:c1fbde68b492 21 * may be used to endorse or promote products derived from this software
mbed_official 70:c1fbde68b492 22 * without specific prior written permission.
mbed_official 70:c1fbde68b492 23 *
mbed_official 70:c1fbde68b492 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 70:c1fbde68b492 25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 70:c1fbde68b492 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 70:c1fbde68b492 27 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 70:c1fbde68b492 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 70:c1fbde68b492 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 70:c1fbde68b492 30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 70:c1fbde68b492 31 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 70:c1fbde68b492 32 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 70:c1fbde68b492 33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 70:c1fbde68b492 34 *******************************************************************************
mbed_official 70:c1fbde68b492 35 */
mbed_official 52:a51c77007319 36
mbed_official 52:a51c77007319 37 /* Includes ------------------------------------------------------------------*/
mbed_official 52:a51c77007319 38 #include "stm32f10x_crc.h"
mbed_official 52:a51c77007319 39
mbed_official 52:a51c77007319 40 /** @addtogroup STM32F10x_StdPeriph_Driver
mbed_official 52:a51c77007319 41 * @{
mbed_official 52:a51c77007319 42 */
mbed_official 52:a51c77007319 43
mbed_official 52:a51c77007319 44 /** @defgroup CRC
mbed_official 52:a51c77007319 45 * @brief CRC driver modules
mbed_official 52:a51c77007319 46 * @{
mbed_official 52:a51c77007319 47 */
mbed_official 52:a51c77007319 48
mbed_official 52:a51c77007319 49 /** @defgroup CRC_Private_TypesDefinitions
mbed_official 52:a51c77007319 50 * @{
mbed_official 52:a51c77007319 51 */
mbed_official 52:a51c77007319 52
mbed_official 52:a51c77007319 53 /**
mbed_official 52:a51c77007319 54 * @}
mbed_official 52:a51c77007319 55 */
mbed_official 52:a51c77007319 56
mbed_official 52:a51c77007319 57 /** @defgroup CRC_Private_Defines
mbed_official 52:a51c77007319 58 * @{
mbed_official 52:a51c77007319 59 */
mbed_official 52:a51c77007319 60
mbed_official 52:a51c77007319 61 /**
mbed_official 52:a51c77007319 62 * @}
mbed_official 52:a51c77007319 63 */
mbed_official 52:a51c77007319 64
mbed_official 52:a51c77007319 65 /** @defgroup CRC_Private_Macros
mbed_official 52:a51c77007319 66 * @{
mbed_official 52:a51c77007319 67 */
mbed_official 52:a51c77007319 68
mbed_official 52:a51c77007319 69 /**
mbed_official 52:a51c77007319 70 * @}
mbed_official 52:a51c77007319 71 */
mbed_official 52:a51c77007319 72
mbed_official 52:a51c77007319 73 /** @defgroup CRC_Private_Variables
mbed_official 52:a51c77007319 74 * @{
mbed_official 52:a51c77007319 75 */
mbed_official 52:a51c77007319 76
mbed_official 52:a51c77007319 77 /**
mbed_official 52:a51c77007319 78 * @}
mbed_official 52:a51c77007319 79 */
mbed_official 52:a51c77007319 80
mbed_official 52:a51c77007319 81 /** @defgroup CRC_Private_FunctionPrototypes
mbed_official 52:a51c77007319 82 * @{
mbed_official 52:a51c77007319 83 */
mbed_official 52:a51c77007319 84
mbed_official 52:a51c77007319 85 /**
mbed_official 52:a51c77007319 86 * @}
mbed_official 52:a51c77007319 87 */
mbed_official 52:a51c77007319 88
mbed_official 52:a51c77007319 89 /** @defgroup CRC_Private_Functions
mbed_official 52:a51c77007319 90 * @{
mbed_official 52:a51c77007319 91 */
mbed_official 52:a51c77007319 92
mbed_official 52:a51c77007319 93 /**
mbed_official 52:a51c77007319 94 * @brief Resets the CRC Data register (DR).
mbed_official 52:a51c77007319 95 * @param None
mbed_official 52:a51c77007319 96 * @retval None
mbed_official 52:a51c77007319 97 */
mbed_official 52:a51c77007319 98 void CRC_ResetDR(void)
mbed_official 52:a51c77007319 99 {
mbed_official 52:a51c77007319 100 /* Reset CRC generator */
mbed_official 52:a51c77007319 101 CRC->CR = CRC_CR_RESET;
mbed_official 52:a51c77007319 102 }
mbed_official 52:a51c77007319 103
mbed_official 52:a51c77007319 104 /**
mbed_official 52:a51c77007319 105 * @brief Computes the 32-bit CRC of a given data word(32-bit).
mbed_official 52:a51c77007319 106 * @param Data: data word(32-bit) to compute its CRC
mbed_official 52:a51c77007319 107 * @retval 32-bit CRC
mbed_official 52:a51c77007319 108 */
mbed_official 52:a51c77007319 109 uint32_t CRC_CalcCRC(uint32_t Data)
mbed_official 52:a51c77007319 110 {
mbed_official 52:a51c77007319 111 CRC->DR = Data;
mbed_official 52:a51c77007319 112
mbed_official 52:a51c77007319 113 return (CRC->DR);
mbed_official 52:a51c77007319 114 }
mbed_official 52:a51c77007319 115
mbed_official 52:a51c77007319 116 /**
mbed_official 52:a51c77007319 117 * @brief Computes the 32-bit CRC of a given buffer of data word(32-bit).
mbed_official 52:a51c77007319 118 * @param pBuffer: pointer to the buffer containing the data to be computed
mbed_official 52:a51c77007319 119 * @param BufferLength: length of the buffer to be computed
mbed_official 52:a51c77007319 120 * @retval 32-bit CRC
mbed_official 52:a51c77007319 121 */
mbed_official 52:a51c77007319 122 uint32_t CRC_CalcBlockCRC(uint32_t pBuffer[], uint32_t BufferLength)
mbed_official 52:a51c77007319 123 {
mbed_official 52:a51c77007319 124 uint32_t index = 0;
mbed_official 52:a51c77007319 125
mbed_official 52:a51c77007319 126 for(index = 0; index < BufferLength; index++)
mbed_official 52:a51c77007319 127 {
mbed_official 52:a51c77007319 128 CRC->DR = pBuffer[index];
mbed_official 52:a51c77007319 129 }
mbed_official 52:a51c77007319 130 return (CRC->DR);
mbed_official 52:a51c77007319 131 }
mbed_official 52:a51c77007319 132
mbed_official 52:a51c77007319 133 /**
mbed_official 52:a51c77007319 134 * @brief Returns the current CRC value.
mbed_official 52:a51c77007319 135 * @param None
mbed_official 52:a51c77007319 136 * @retval 32-bit CRC
mbed_official 52:a51c77007319 137 */
mbed_official 52:a51c77007319 138 uint32_t CRC_GetCRC(void)
mbed_official 52:a51c77007319 139 {
mbed_official 52:a51c77007319 140 return (CRC->DR);
mbed_official 52:a51c77007319 141 }
mbed_official 52:a51c77007319 142
mbed_official 52:a51c77007319 143 /**
mbed_official 52:a51c77007319 144 * @brief Stores a 8-bit data in the Independent Data(ID) register.
mbed_official 52:a51c77007319 145 * @param IDValue: 8-bit value to be stored in the ID register
mbed_official 52:a51c77007319 146 * @retval None
mbed_official 52:a51c77007319 147 */
mbed_official 52:a51c77007319 148 void CRC_SetIDRegister(uint8_t IDValue)
mbed_official 52:a51c77007319 149 {
mbed_official 52:a51c77007319 150 CRC->IDR = IDValue;
mbed_official 52:a51c77007319 151 }
mbed_official 52:a51c77007319 152
mbed_official 52:a51c77007319 153 /**
mbed_official 52:a51c77007319 154 * @brief Returns the 8-bit data stored in the Independent Data(ID) register
mbed_official 52:a51c77007319 155 * @param None
mbed_official 52:a51c77007319 156 * @retval 8-bit value of the ID register
mbed_official 52:a51c77007319 157 */
mbed_official 52:a51c77007319 158 uint8_t CRC_GetIDRegister(void)
mbed_official 52:a51c77007319 159 {
mbed_official 52:a51c77007319 160 return (CRC->IDR);
mbed_official 52:a51c77007319 161 }
mbed_official 52:a51c77007319 162
mbed_official 52:a51c77007319 163 /**
mbed_official 52:a51c77007319 164 * @}
mbed_official 52:a51c77007319 165 */
mbed_official 52:a51c77007319 166
mbed_official 52:a51c77007319 167 /**
mbed_official 52:a51c77007319 168 * @}
mbed_official 52:a51c77007319 169 */
mbed_official 52:a51c77007319 170
mbed_official 52:a51c77007319 171 /**
mbed_official 52:a51c77007319 172 * @}
mbed_official 52:a51c77007319 173 */
mbed_official 52:a51c77007319 174
mbed_official 84:f54042cbc282 175 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/