CRC16校驗(yàn)C語(yǔ)言程序源碼-(附完整的可執(zhí)行的C語(yǔ)言代碼)

1、精選優(yōu)質(zhì)文檔-傾情為你奉上CRC16校驗(yàn)C語(yǔ)言程序源碼 （附完整的可執(zhí)行的C語(yǔ)言代碼）/CRC16校驗(yàn)在通訊中應(yīng)用廣泛，這里不對(duì)其理論進(jìn)行討論，只對(duì)常見(jiàn)的2種/實(shí)現(xiàn)方法進(jìn)行測(cè)試。方法一：查表法（256長(zhǎng)度的校驗(yàn)表） 速度快，準(zhǔn)確，但是對(duì)于單片機(jī)設(shè)備存儲(chǔ)占用大，且校驗(yàn)表長(zhǎng)度大，輸入時(shí)容易出現(xiàn)錯(cuò)誤。/ - POPULAR POLYNOMIALS -/ CCITT:      x16 + x12 + x5 + x0           

2、60;     (0x1021)/ CRC-16:     x16 + x15 + x2 + x0                 (0x8005)#define         CRC_16_POLYNOMIALS      0

3、x8005const BYTE chCRCHTalbe =            / CRC 高位字節(jié)值表0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x

4、01, 0xC0, 0x80, 0x41,0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,

5、0x40,0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,0x00, 0xC1,

6、 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,0x00, 0xC1, 0x81, 0x40, 0x0

7、0, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0

8、x40, 0x01, 0xC0, 0x80, 0x41,0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41,0x00, 0xC1, 0x81, 0x40;const BYTE chCRCLTalbe =          / CRC 低位字節(jié)值表0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2, 0xC6, 0x06, 0x07, 0xC7,0x05, 0xC5, 0xC4

9、, 0x04, 0xCC, 0x0C, 0x0D, 0xCD, 0x0F, 0xCF, 0xCE, 0x0E,0x0A, 0xCA, 0xCB, 0x0B, 0xC9, 0x09, 0x08, 0xC8, 0xD8, 0x18, 0x19, 0xD9,0x1B, 0xDB, 0xDA, 0x1A, 0x1E, 0xDE, 0xDF, 0x1F, 0xDD, 0x1D, 0x1C, 0xDC,0x14, 0xD4, 0xD5, 0x15, 0xD7, 0x17, 0x16, 0xD6, 0xD2, 0x12, 0x13, 0xD3,0x11, 0xD1, 0xD0, 0x10, 0xF0, 0x

10、30, 0x31, 0xF1, 0x33, 0xF3, 0xF2, 0x32,0x36, 0xF6, 0xF7, 0x37, 0xF5, 0x35, 0x34, 0xF4, 0x3C, 0xFC, 0xFD, 0x3D,0xFF, 0x3F, 0x3E, 0xFE, 0xFA, 0x3A, 0x3B, 0xFB, 0x39, 0xF9, 0xF8, 0x38,0x28, 0xE8, 0xE9, 0x29, 0xEB, 0x2B, 0x2A, 0xEA, 0xEE, 0x2E, 0x2F, 0xEF,0x2D, 0xED, 0xEC, 0x2C, 0xE4, 0x24, 0x25, 0xE5,

11、0x27, 0xE7, 0xE6, 0x26,0x22, 0xE2, 0xE3, 0x23, 0xE1, 0x21, 0x20, 0xE0, 0xA0, 0x60, 0x61, 0xA1,0x63, 0xA3, 0xA2, 0x62, 0x66, 0xA6, 0xA7, 0x67, 0xA5, 0x65, 0x64, 0xA4,0x6C, 0xAC, 0xAD, 0x6D, 0xAF, 0x6F, 0x6E, 0xAE, 0xAA, 0x6A, 0x6B, 0xAB,0x69, 0xA9, 0xA8, 0x68, 0x78, 0xB8, 0xB9, 0x79, 0xBB, 0x7B, 0x7A

12、, 0xBA,0xBE, 0x7E, 0x7F, 0xBF, 0x7D, 0xBD, 0xBC, 0x7C, 0xB4, 0x74, 0x75, 0xB5,0x77, 0xB7, 0xB6, 0x76, 0x72, 0xB2, 0xB3, 0x73, 0xB1, 0x71, 0x70, 0xB0,0x50, 0x90, 0x91, 0x51, 0x93, 0x53, 0x52, 0x92, 0x96, 0x56, 0x57, 0x97,0x55, 0x95, 0x94, 0x54, 0x9C, 0x5C, 0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E,0x5A, 0x9

13、A, 0x9B, 0x5B, 0x99, 0x59, 0x58, 0x98, 0x88, 0x48, 0x49, 0x89,0x4B, 0x8B, 0x8A, 0x4A, 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C,0x44, 0x84, 0x85, 0x45, 0x87, 0x47, 0x46, 0x86, 0x82, 0x42, 0x43, 0x83,0x41, 0x81, 0x80, 0x40;WORD CRC16_1(BYTE* pchMsg, WORD wDataLen)     &#

14、160;  BYTE chCRCHi = 0xFF; / 高CRC字節(jié)初始化        BYTE chCRCLo = 0xFF; / 低CRC字節(jié)初始化        WORD wIndex;            / CRC循環(huán)中的索引        while

15、(wDataLen-)                        / 計(jì)算CRC                wIndex = chCRCLo *pchMsg+ ;     

16、           chCRCLo = chCRCHi chCRCHTalbewIndex;                 chCRCHi = chCRCLTalbewIndex ;              

17、60; return (chCRCHi << 8) | chCRCLo) ;方法一：列表法（簡(jiǎn)單表）const WORD wCRCTalbeAbs =0x0000, 0xCC01, 0xD801, 0x1400, 0xF001, 0x3C00, 0x2800, 0xE401, 0xA001, 0x6C00, 0x7800, 0xB401, 0x5000, 0x9C01, 0x8801, 0x4400, ;WORD CRC16_2(BYTE* pchMsg, WORD wDataLen)        WORD w

18、CRC = 0xFFFF;        WORD i;        BYTE chChar;        for (i = 0; i < wDataLen; i+)                  

19、0;     chChar = *pchMsg+;                wCRC = wCRCTalbeAbs(chChar wCRC) & 15 (wCRC >> 4);                wCRC = wCRCTa

20、lbeAbs(chChar >> 4) wCRC) & 15 (wCRC >> 4);                return wCRC;方法二：定義法 根據(jù)CRC16/MODBUS原理直接計(jì)算，算法簡(jiǎn)單但對(duì)單片機(jī)計(jì)算壓力大。WORD CRC16_3(BYTE* pchMsg, WORD wDataLen)        BYTE i, chChar;

21、        WORD wCRC = 0xFFFF;        while (wDataLen-)                        chChar = *pchMsg+;    &#

22、160;           chChar = ByteInvert(chChar);                wCRC = (WORD) chChar) << 8);             

23、0;  for (i = 0; i < 8; i+)                                        if (wCRC & 0x8000)  &#

24、160;                             wCRC = (wCRC << 1) CRC_16_POLYNOMIALS;              

25、;          else                                wCRC <<= 1;      

26、                          wCRC = WordInvert(wCRC);        return wCRC;/試驗(yàn)數(shù)據(jù)：/      采用Metrowerks CodeWarrior在DSP56F80x平臺(tái)上,對(duì)這3種

27、方法/進(jìn)行了性能測(cè)試。/ -/  代碼大小(字)    額外存儲(chǔ)空間(字)        執(zhí)行時(shí)間(周期數(shù))/ -/ 方法1   32        512   540/ 方法2   57          &

28、#160;16             1120/ 方法3   142*      0             4598/附一個(gè)完整的C語(yǔ)言代碼#include <stdio.h>void InvertUint8(unsigned char *dBuf,unsigned char *srcBuf) int i;