shao ziyang / mbed-src-kl05

mbed library sources

Dependents:   frdm_kl05z_gpio_test

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targets/cmsis/TARGET_STM/TARGET_DISCO_F100RB/stm32f10x_crc.c@323:9e901b0a5aa1, 2014-09-13 (annotated)

Committer:
shaoziyang
Date:
Sat Sep 13 14:25:46 2014 +0000
Revision:
323:9e901b0a5aa1
Parent:
126:549ba18ddd81 
test with CLOCK_SETUP = 0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 126:549ba18ddd81 1 /**
mbed_official 126:549ba18ddd81 2 ******************************************************************************
mbed_official 126:549ba18ddd81 3 * @file stm32f10x_crc.c
mbed_official 126:549ba18ddd81 4 * @author MCD Application Team
mbed_official 126:549ba18ddd81 5 * @version V3.6.1
mbed_official 126:549ba18ddd81 6 * @date 05-March-2012
mbed_official 126:549ba18ddd81 7 * @brief This file provides all the CRC firmware functions.
mbed_official 126:549ba18ddd81 8 *******************************************************************************
mbed_official 126:549ba18ddd81 9 * Copyright (c) 2014, STMicroelectronics
mbed_official 126:549ba18ddd81 10 * All rights reserved.
mbed_official 126:549ba18ddd81 11 *
mbed_official 126:549ba18ddd81 12 * Redistribution and use in source and binary forms, with or without
mbed_official 126:549ba18ddd81 13 * modification, are permitted provided that the following conditions are met:
mbed_official 126:549ba18ddd81 14 *
mbed_official 126:549ba18ddd81 15 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 126:549ba18ddd81 16 * this list of conditions and the following disclaimer.
mbed_official 126:549ba18ddd81 17 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 126:549ba18ddd81 18 * this list of conditions and the following disclaimer in the documentation
mbed_official 126:549ba18ddd81 19 * and/or other materials provided with the distribution.
mbed_official 126:549ba18ddd81 20 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 126:549ba18ddd81 21 * may be used to endorse or promote products derived from this software
mbed_official 126:549ba18ddd81 22 * without specific prior written permission.
mbed_official 126:549ba18ddd81 23 *
mbed_official 126:549ba18ddd81 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 126:549ba18ddd81 25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 126:549ba18ddd81 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 126:549ba18ddd81 27 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 126:549ba18ddd81 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 126:549ba18ddd81 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 126:549ba18ddd81 30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 126:549ba18ddd81 31 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 126:549ba18ddd81 32 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 126:549ba18ddd81 33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 126:549ba18ddd81 34 *******************************************************************************
mbed_official 126:549ba18ddd81 35 */
mbed_official 126:549ba18ddd81 36
mbed_official 126:549ba18ddd81 37 /* Includes ------------------------------------------------------------------*/
mbed_official 126:549ba18ddd81 38 #include "stm32f10x_crc.h"
mbed_official 126:549ba18ddd81 39
mbed_official 126:549ba18ddd81 40 /** @addtogroup STM32F10x_StdPeriph_Driver
mbed_official 126:549ba18ddd81 41 * @{
mbed_official 126:549ba18ddd81 42 */
mbed_official 126:549ba18ddd81 43
mbed_official 126:549ba18ddd81 44 /** @defgroup CRC
mbed_official 126:549ba18ddd81 45 * @brief CRC driver modules
mbed_official 126:549ba18ddd81 46 * @{
mbed_official 126:549ba18ddd81 47 */
mbed_official 126:549ba18ddd81 48
mbed_official 126:549ba18ddd81 49 /** @defgroup CRC_Private_TypesDefinitions
mbed_official 126:549ba18ddd81 50 * @{
mbed_official 126:549ba18ddd81 51 */
mbed_official 126:549ba18ddd81 52
mbed_official 126:549ba18ddd81 53 /**
mbed_official 126:549ba18ddd81 54 * @}
mbed_official 126:549ba18ddd81 55 */
mbed_official 126:549ba18ddd81 56
mbed_official 126:549ba18ddd81 57 /** @defgroup CRC_Private_Defines
mbed_official 126:549ba18ddd81 58 * @{
mbed_official 126:549ba18ddd81 59 */
mbed_official 126:549ba18ddd81 60
mbed_official 126:549ba18ddd81 61 /**
mbed_official 126:549ba18ddd81 62 * @}
mbed_official 126:549ba18ddd81 63 */
mbed_official 126:549ba18ddd81 64
mbed_official 126:549ba18ddd81 65 /** @defgroup CRC_Private_Macros
mbed_official 126:549ba18ddd81 66 * @{
mbed_official 126:549ba18ddd81 67 */
mbed_official 126:549ba18ddd81 68
mbed_official 126:549ba18ddd81 69 /**
mbed_official 126:549ba18ddd81 70 * @}
mbed_official 126:549ba18ddd81 71 */
mbed_official 126:549ba18ddd81 72
mbed_official 126:549ba18ddd81 73 /** @defgroup CRC_Private_Variables
mbed_official 126:549ba18ddd81 74 * @{
mbed_official 126:549ba18ddd81 75 */
mbed_official 126:549ba18ddd81 76
mbed_official 126:549ba18ddd81 77 /**
mbed_official 126:549ba18ddd81 78 * @}
mbed_official 126:549ba18ddd81 79 */
mbed_official 126:549ba18ddd81 80
mbed_official 126:549ba18ddd81 81 /** @defgroup CRC_Private_FunctionPrototypes
mbed_official 126:549ba18ddd81 82 * @{
mbed_official 126:549ba18ddd81 83 */
mbed_official 126:549ba18ddd81 84
mbed_official 126:549ba18ddd81 85 /**
mbed_official 126:549ba18ddd81 86 * @}
mbed_official 126:549ba18ddd81 87 */
mbed_official 126:549ba18ddd81 88
mbed_official 126:549ba18ddd81 89 /** @defgroup CRC_Private_Functions
mbed_official 126:549ba18ddd81 90 * @{
mbed_official 126:549ba18ddd81 91 */
mbed_official 126:549ba18ddd81 92
mbed_official 126:549ba18ddd81 93 /**
mbed_official 126:549ba18ddd81 94 * @brief Resets the CRC Data register (DR).
mbed_official 126:549ba18ddd81 95 * @param None
mbed_official 126:549ba18ddd81 96 * @retval None
mbed_official 126:549ba18ddd81 97 */
mbed_official 126:549ba18ddd81 98 void CRC_ResetDR(void)
mbed_official 126:549ba18ddd81 99 {
mbed_official 126:549ba18ddd81 100 /* Reset CRC generator */
mbed_official 126:549ba18ddd81 101 CRC->CR = CRC_CR_RESET;
mbed_official 126:549ba18ddd81 102 }
mbed_official 126:549ba18ddd81 103
mbed_official 126:549ba18ddd81 104 /**
mbed_official 126:549ba18ddd81 105 * @brief Computes the 32-bit CRC of a given data word(32-bit).
mbed_official 126:549ba18ddd81 106 * @param Data: data word(32-bit) to compute its CRC
mbed_official 126:549ba18ddd81 107 * @retval 32-bit CRC
mbed_official 126:549ba18ddd81 108 */
mbed_official 126:549ba18ddd81 109 uint32_t CRC_CalcCRC(uint32_t Data)
mbed_official 126:549ba18ddd81 110 {
mbed_official 126:549ba18ddd81 111 CRC->DR = Data;
mbed_official 126:549ba18ddd81 112
mbed_official 126:549ba18ddd81 113 return (CRC->DR);
mbed_official 126:549ba18ddd81 114 }
mbed_official 126:549ba18ddd81 115
mbed_official 126:549ba18ddd81 116 /**
mbed_official 126:549ba18ddd81 117 * @brief Computes the 32-bit CRC of a given buffer of data word(32-bit).
mbed_official 126:549ba18ddd81 118 * @param pBuffer: pointer to the buffer containing the data to be computed
mbed_official 126:549ba18ddd81 119 * @param BufferLength: length of the buffer to be computed
mbed_official 126:549ba18ddd81 120 * @retval 32-bit CRC
mbed_official 126:549ba18ddd81 121 */
mbed_official 126:549ba18ddd81 122 uint32_t CRC_CalcBlockCRC(uint32_t pBuffer[], uint32_t BufferLength)
mbed_official 126:549ba18ddd81 123 {
mbed_official 126:549ba18ddd81 124 uint32_t index = 0;
mbed_official 126:549ba18ddd81 125
mbed_official 126:549ba18ddd81 126 for(index = 0; index < BufferLength; index++)
mbed_official 126:549ba18ddd81 127 {
mbed_official 126:549ba18ddd81 128 CRC->DR = pBuffer[index];
mbed_official 126:549ba18ddd81 129 }
mbed_official 126:549ba18ddd81 130 return (CRC->DR);
mbed_official 126:549ba18ddd81 131 }
mbed_official 126:549ba18ddd81 132
mbed_official 126:549ba18ddd81 133 /**
mbed_official 126:549ba18ddd81 134 * @brief Returns the current CRC value.
mbed_official 126:549ba18ddd81 135 * @param None
mbed_official 126:549ba18ddd81 136 * @retval 32-bit CRC
mbed_official 126:549ba18ddd81 137 */
mbed_official 126:549ba18ddd81 138 uint32_t CRC_GetCRC(void)
mbed_official 126:549ba18ddd81 139 {
mbed_official 126:549ba18ddd81 140 return (CRC->DR);
mbed_official 126:549ba18ddd81 141 }
mbed_official 126:549ba18ddd81 142
mbed_official 126:549ba18ddd81 143 /**
mbed_official 126:549ba18ddd81 144 * @brief Stores a 8-bit data in the Independent Data(ID) register.
mbed_official 126:549ba18ddd81 145 * @param IDValue: 8-bit value to be stored in the ID register
mbed_official 126:549ba18ddd81 146 * @retval None
mbed_official 126:549ba18ddd81 147 */
mbed_official 126:549ba18ddd81 148 void CRC_SetIDRegister(uint8_t IDValue)
mbed_official 126:549ba18ddd81 149 {
mbed_official 126:549ba18ddd81 150 CRC->IDR = IDValue;
mbed_official 126:549ba18ddd81 151 }
mbed_official 126:549ba18ddd81 152
mbed_official 126:549ba18ddd81 153 /**
mbed_official 126:549ba18ddd81 154 * @brief Returns the 8-bit data stored in the Independent Data(ID) register
mbed_official 126:549ba18ddd81 155 * @param None
mbed_official 126:549ba18ddd81 156 * @retval 8-bit value of the ID register
mbed_official 126:549ba18ddd81 157 */
mbed_official 126:549ba18ddd81 158 uint8_t CRC_GetIDRegister(void)
mbed_official 126:549ba18ddd81 159 {
mbed_official 126:549ba18ddd81 160 return (CRC->IDR);
mbed_official 126:549ba18ddd81 161 }
mbed_official 126:549ba18ddd81 162
mbed_official 126:549ba18ddd81 163 /**
mbed_official 126:549ba18ddd81 164 * @}
mbed_official 126:549ba18ddd81 165 */
mbed_official 126:549ba18ddd81 166
mbed_official 126:549ba18ddd81 167 /**
mbed_official 126:549ba18ddd81 168 * @}
mbed_official 126:549ba18ddd81 169 */
mbed_official 126:549ba18ddd81 170
mbed_official 126:549ba18ddd81 171 /**
mbed_official 126:549ba18ddd81 172 * @}
mbed_official 126:549ba18ddd81 173 */
mbed_official 126:549ba18ddd81 174
mbed_official 126:549ba18ddd81 175 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/