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stm32f103软硬件CRC

stm32 wutianjun5858@163.com 5年前 (2020-06-10) 1817次浏览 0个评论

1. h文件

  1. /******************************************************************************
  2.  *                                   插座                                
  3.  *       (c) Copyright 2016, RD Department, SHFZWKEJI Industry Co.Ltd        
  4.  *                              All Rights Reserved                            
  5.  *                                                                             
  6.  * FileName     : CRC.h                                                        
  7.  * Description  :                                                              
  8.  * Version      : V1.0                                                         
  9.  * Function List:                                                              
  10.  *               1.CRC校验算法
  11.  *               2:CRC多项式 X32+X26+X23+X22+X16+X12+X11+X10+X8+X7+X5+X4+X2+X+1
  12.  *               3:CRC掩码 0x04C11DB7                                                        
  13.  *------------------------------Revision History-------------------------------
  14.  * No.  Version  Date        Revised By   Item       Description               
  15.  * 1    V1.0     2017-03-08  Liu Qi Sen   插座     Original Version
  16.  ******************************************************************************/
  18. /******************************************************************************
  19.  *                             Multi-Include-Prevent                          *
  20.  ******************************************************************************/
  21. #ifndef _CRC_H_                                                                
  22. #define _CRC_H_                                                                
  23. #ifdef __cplusplus                                                             
  24. extern "C"{                                  
  25. #endif                                                                         
  27. /******************************************************************************
  28.  *                              Debug Switch Section                          *
  29.  ******************************************************************************/
  30. #define DEBUG_CRC
  32. /******************************************************************************
  33.  *                             Include File Section                           *
  34.  ******************************************************************************/
  35. #include "typedef.h"                                                                               
  36. /******************************************************************************
  37.  *                          Pubilc Macro Define Section                       *
  38.  ******************************************************************************/
  39. #ifndef _CRC_C_                                                                 
  40.     #define CRC_EXT extern                                                     
  41. #else                                                                          
  42.     #define CRC_EXT                                                            
  43. #endif                                                                         
  45. /******************************************************************************
  46.  *                             Struct Define Section                          *
  47.  ******************************************************************************/
  49. /******************************************************************************
  50.  *                        Global Variable Declare Section                     *
  51.  ******************************************************************************/
  53. /******************************************************************************
  54.  *                            Function Declare Section                        *
  55.  ******************************************************************************/
  56. CRC_EXT void CRC_ModuleInit(void);
  57. CRC_EXT uint32 CRC_8BitHardwareCalc(uint8 *buf, uint32 len);
  58. CRC_EXT uint32 CRC_8BitHardwareCalc_ota(uint8 *buf, uint32 len);
  59. CRC_EXT uint32 CRC_32BitHardwareCalc(uint32 *buf, uint32 len);
  60. CRC_EXT void CRC_ResetValue(void);
  61. #ifdef __cplusplus                                                             
  62. }                                                                              
  63. #endif                                                                         
  65. #endif                                                                         
  66. /*********** (C) COPYRIGHT 2016   SHFZWKEJI  Industry ******** END OF FILE *******/

2. c文件

  1. /******************************************************************************
  2.  *                                    插座
  3.  *        (c) Copyright 2017, RD Department, SHFZWKEJI Industry Co.Ltd
  4.  *                               All Rights Reserved
  5.  *
  6.  * FileName     : CRC.c
  7.  * Description  :
  8.  * Version      : V1.0
  9.  * Function List:
  10.  *                 1.CRC校验算法
  11.  *                 2:CRC多项式 X32+X26+X23+X22+X16+X12+X11+X10+X8+X7+X5+X4+X2+X+1
  12.  *                 2:CRC掩码 0x04C11DB7
  13.  *------------------------------Revision History-------------------------------
  14.  * No.  Version  Date        Revised By   Item     Description
  15.  * 1    V1.0     2017-03-21  Liuqisen     插座     Original Version
  16.  ******************************************************************************/
  18. /******************************************************************************
  19.  *                             Include File Section                           *
  20.  ******************************************************************************/
  21. #define _CRC_C_
  22. #include "CRC.h"
  23. #undef _CRC_C_
  25. /******************************************************************************
  26.  *                         Private Macro Define Section                       *
  27.  ******************************************************************************/
  29. /******************************************************************************
  30.  *                             Struct Define Section                          *
  31.  ******************************************************************************/
  33. /******************************************************************************
  34.  *                           Prototype Declare Section                        *
  35.  ******************************************************************************/
  37. /******************************************************************************
  38.  *                        Global Variable Declare Section                     *
  39.  ******************************************************************************/
  41. /******************************************************************************
  42.  *                     File Static Variable Declare Section                   *
  43.  ******************************************************************************/
  45. /******************************************************************************
  46.  *                           Function Declare Section                         *
  47.  ******************************************************************************/
  49. void CRC_ResetValue(void);
  51. /*============================== External Function ===========================*/
  52. /******************************************************************************
  53.  * Function Name:
  54.  * Decription   :CRC 硬件模块初始化
  55.  * Calls        :
  56.  * Called By    :
  57.  * Input        :
  58.  * Output       :
  59.  * Return Value :
  60.  * Others       :
  61.  *-------------------------------- Revision History ---------------------------
  62.  * No. Version Date       Revised by   Item    Description
  63.  * 1   V1.0    2017-03-21 Liu qi sen   插座    Original  Version
  64.  ******************************************************************************/
  65. void CRC_ModuleInit(void)
  66. {
  67.     /* 打开CRC时钟 */
  68.     RCC_AHBPeriphClockCmd(RCC_AHBPeriph_CRC, ENABLE);
  69.     /* 复位CRC模块 */
  70.     CRC_ResetValue();
  71. }
  72. /******************************************************************************
  73.  * Function Name:
  74.  * Decription   :CRC 8bit硬件计算
  75.  * Calls        :
  76.  * Called By    :
  77.  * Input        :
  78.  * Output       :
  79.  * Return Value :
  80.  * Others       :
  81.  *-------------------------------- Revision History ---------------------------
  82.  * No. Version Date       Revised by   Item    Description
  83.  * 1   V1.0    2017-03-21 Liu qi sen   插座    Original  Version
  84.  ******************************************************************************/
  85. #if 0
  86. uint32 CRC_8BitHardwareCalc(uint8 *buf, uint32 len)
  87. {
  88.     uint32 loop;
  89.     uint8 buff[4] = { 0xff,0xff,0xff,0xff };
  90.     uint32 *p32 = (uint32 *)buff;
  92.     CRC_ResetValue();
  94.     for (loop = 0; loop < len; loop++)
  95.     {
  96.         buff[3] = buf[loop];
  97.         CRC->DR = *p32;
  98.     }
  99.     return CRC->DR;
  100. }
  101. #endif
  103. uint32 CRC_8BitHardwareCalc(uint8 *buf, uint32 len)
  104. {
  105.     uint32 index = 0;
  106.     CRC_ResetValue();
  108.     for (index = 0; index < len; index++)
  109.     {
  110.         CRC->DR = (uint32)buf[index];
  111.     }
  113.     return (CRC->DR);
  114. }
  116. //crc校验 wtj
  117. uint32 CRC_8BitHardwareCalc_ota(uint8 *buf, uint32 len)
  118. {
  119.     uint32 index = 0;
  120.     //CRC_ResetValue();
  122.     for (index = 0; index < len; index++)
  123.     {
  124.         CRC->DR = (uint32)buf[index];
  125.     }
  127.     return (CRC->DR);
  128. }
  129. /******************************************************************************
  130.  * Function Name:
  131.  * Decription   :CRC 32bit硬件计算
  132.  * Calls        :
  133.  * Called By    :
  134.  * Input        :
  135.  * Output       :
  136.  * Return Value :
  137.  * Others       :
  138.  *-------------------------------- Revision History ---------------------------
  139.  * No. Version Date       Revised by   Item    Description
  140.  * 1   V1.0    2017-03-21 Liu qi sen   插座    Original  Version
  141.  ******************************************************************************/
  142. uint32 CRC_32BitHardwareCalc(uint32 *buf, uint32 len)
  143. {
  144.     uint32 loop;
  146.     CRC_ResetValue();
  148.     for (loop = 0; loop < len; loop++)
  149.     {
  150.         CRC->DR = buf[loop];
  151.     }
  153.     return CRC->DR;
  154. }
  156. /*============================== Internal Function ===========================*/
  158. /******************************************************************************
  159.  * Function Name:
  160.  * Decription   :CRC 硬件模块复位
  161.  * Calls        :
  162.  * Called By    :
  163.  * Input        :
  164.  * Output       :
  165.  * Return Value :
  166.  * Others       :
  167.  *-------------------------------- Revision History ---------------------------
  168.  * No. Version Date       Revised by   Item    Description
  169.  * 1   V1.0    2017-03-21 Liu qi sen   插座    Original  Version
  170.  ******************************************************************************/
  171. void CRC_ResetValue(void)
  172. {
  173.     CRC->CR = 1; //复位CRC寄存器
  174. }
  175. /******************************************************************************
  176.  * Function Name:
  177.  * Decription   :软件CRC8bit计算
  178.  * Calls        :
  179.  * Called By    :
  180.  * Input        :
  181.  * Output       :
  182.  * Return Value :
  183.  * Others       :
  184.  *-------------------------------- Revision History ---------------------------
  185.  * No. Version Date       Revised by   Item    Description
  186.  * 1   V1.0    2017-03-21 Liu qi sen   插座    Original  Version
  187.  ******************************************************************************/
  188. #if 0
  189. static uint32 CRC_8BitSoftwareCalc(uint8 *buf, uint32 len)
  190. {
  191.     uint32 xbit;
  192.     uint32 data;
  193.     uint32 CRC32 = 0xFFFFFFFF;     //初值
  194.     uint32 bits;
  195.     uint32 loop;
  196.     uint32 buff[4] = { 0xff,0xff,0xff,0xff };
  197.     uint32 *p32 = (u32 *)buff;
  198.     const uint32 dwPolynomial = 0x04c11db7;
  200.     for (loop = 0; loop < len; loop++)
  201.     {
  202.         xbit = 1 << 31;
  204.         buff[3] = buf[i];
  206.         data = *p32;
  208.         for (bits = 0; bits < 32; bits++)
  209.         {
  210.             if (CRC32 & 0x80000000)
  211.             {
  212.                 CRC32 <<= 1;
  213.                 CRC32 ^= dwPolynomial;
  214.             }
  215.             else
  216.             {
  217.                 CRC32 <<= 1;
  218.             }
  220.             if (data & xbit)
  221.             {
  222.                 CRC32 ^= dwPolynomial;
  223.             }
  225.             xbit >>= 1;
  226.         }
  227.     }
  228.     return CRC32;
  229. }
  230. #endif
  231. /******************************************************************************
  232.  * Function Name:
  233.  * Decription   :软件CRC32bit计算
  234.  * Calls        :
  235.  * Called By    :
  236.  * Input        :
  237.  * Output       :
  238.  * Return Value :
  239.  * Others       :
  240.  *-------------------------------- Revision History ---------------------------
  241.  * No. Version Date       Revised by   Item    Description
  242.  * 1   V1.0    2017-03-21 Liu qi sen   插座    Original  Version
  243.  ******************************************************************************/
  244. #if 0
  245. static uint32 CRC_32BitSoftwareCalc(uint32 *buf, uint32 len)
  246. {
  247.     uint32 xbit;
  248.     uint32 data;
  249.     uint32 CRC32 = 0xFFFFFFFF;
  250.     uint32 bits;
  251.     const u32 dwPolynomial = 0x04c11db7;
  252.     uint32 loop;
  254.     for (loop = 0; loop < len; loop++)
  255.     {
  256.         xbit = 1 << 31;
  257.         data = buf[i];
  259.         for (bits = 0; bits < 32; bits++)
  260.         {
  261.             if (CRC32 & 0x80000000)
  262.             {
  263.                 CRC32 <<= 1;
  264.                 CRC32 ^= dwPolynomial;
  265.             }
  266.             else
  267.             {
  268.                 CRC32 <<= 1;
  269.             }
  271.             if (data & xbit)
  272.             {
  273.                 CRC32 ^= dwPolynomial;
  274.             }
  276.             xbit >>= 1;
  277.         }
  278.     }
  280.     return CRC32;
  281. }
  282. #endif
  283. /*********** (C) COPYRIGHT 2017 SHFZWKEJI Industry ******** END OF FILE ***********/
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