mbed library sources
Dependents: frdm_kl05z_gpio_test
Fork of mbed-src by
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?
User | Revision | Line number | New 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****/ |