166 lines
8.0 KiB
C
166 lines
8.0 KiB
C
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#include "crc.h"
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static uint8_t const s_crc8_tbl[256] = {
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0x00, 0x91, 0xe3, 0x72, 0x07, 0x96, 0xe4, 0x75,
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0x0e, 0x9f, 0xed, 0x7c, 0x09, 0x98, 0xea, 0x7b,
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0x1c, 0x8d, 0xff, 0x6e, 0x1b, 0x8a, 0xf8, 0x69,
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0x12, 0x83, 0xf1, 0x60, 0x15, 0x84, 0xf6, 0x67,
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0x38, 0xa9, 0xdb, 0x4a, 0x3f, 0xae, 0xdc, 0x4d,
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0x36, 0xa7, 0xd5, 0x44, 0x31, 0xa0, 0xd2, 0x43,
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0x24, 0xb5, 0xc7, 0x56, 0x23, 0xb2, 0xc0, 0x51,
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0x2a, 0xbb, 0xc9, 0x58, 0x2d, 0xbc, 0xce, 0x5f,
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0x70, 0xe1, 0x93, 0x02, 0x77, 0xe6, 0x94, 0x05,
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0x7e, 0xef, 0x9d, 0x0c, 0x79, 0xe8, 0x9a, 0x0b,
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0x6c, 0xfd, 0x8f, 0x1e, 0x6b, 0xfa, 0x88, 0x19,
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0x62, 0xf3, 0x81, 0x10, 0x65, 0xf4, 0x86, 0x17,
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0x48, 0xd9, 0xab, 0x3a, 0x4f, 0xde, 0xac, 0x3d,
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0x46, 0xd7, 0xa5, 0x34, 0x41, 0xd0, 0xa2, 0x33,
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0x54, 0xc5, 0xb7, 0x26, 0x53, 0xc2, 0xb0, 0x21,
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0x5a, 0xcb, 0xb9, 0x28, 0x5d, 0xcc, 0xbe, 0x2f,
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0xe0, 0x71, 0x03, 0x92, 0xe7, 0x76, 0x04, 0x95,
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0xee, 0x7f, 0x0d, 0x9c, 0xe9, 0x78, 0x0a, 0x9b,
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0xfc, 0x6d, 0x1f, 0x8e, 0xfb, 0x6a, 0x18, 0x89,
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0xf2, 0x63, 0x11, 0x80, 0xf5, 0x64, 0x16, 0x87,
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0xd8, 0x49, 0x3b, 0xaa, 0xdf, 0x4e, 0x3c, 0xad,
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0xd6, 0x47, 0x35, 0xa4, 0xd1, 0x40, 0x32, 0xa3,
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0xc4, 0x55, 0x27, 0xb6, 0xc3, 0x52, 0x20, 0xb1,
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0xca, 0x5b, 0x29, 0xb8, 0xcd, 0x5c, 0x2e, 0xbf,
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0x90, 0x01, 0x73, 0xe2, 0x97, 0x06, 0x74, 0xe5,
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0x9e, 0x0f, 0x7d, 0xec, 0x99, 0x08, 0x7a, 0xeb,
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0x8c, 0x1d, 0x6f, 0xfe, 0x8b, 0x1a, 0x68, 0xf9,
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0x82, 0x13, 0x61, 0xf0, 0x85, 0x14, 0x66, 0xf7,
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0xa8, 0x39, 0x4b, 0xda, 0xaf, 0x3e, 0x4c, 0xdd,
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0xa6, 0x37, 0x45, 0xd4, 0xa1, 0x30, 0x42, 0xd3,
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0xb4, 0x25, 0x57, 0xc6, 0xb3, 0x22, 0x50, 0xc1,
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0xba, 0x2b, 0x59, 0xc8, 0xbd, 0x2c, 0x5e, 0xcf};
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uint8_t crc8_calc(const void *data, size_t len)
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{
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const uint8_t *ptr = data;
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uint8_t crc = 0;
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while (len-- != 0)
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{
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crc = s_crc8_tbl[crc ^ *ptr++];
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}
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return crc;
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}
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uint16_t crc16_calc(const void *data, size_t length)
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{
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const uint8_t *ptr = data;
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uint16_t crc = 0xffff;
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while (length--)
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{
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crc = crc ^ ((uint16_t)*ptr++ & 0xff);
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for (size_t i = 0; i < 8; i++)
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{
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if (crc & 0x1)
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crc = crc >> 1 ^ 0x0000a001;
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else
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crc = crc >> 1;
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}
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}
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return (crc & 0xFFFF);
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}
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static struct
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{
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uint32_t Width : 6; // CRC比特数
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uint32_t RefIn : 1; // 表示待测数据的每个字节：false 表示不按位颠倒，true 表示按位颠倒
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uint32_t RefOut : 1; // 表示计算结束后：flase 表示输出结果不按位颠倒，true 表示输出结果按位颠倒
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uint32_t Poly; // 生成项（未颠倒的）
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uint32_t Init; // 初始值（注意此值不是计算输出值，而时计算过程的中间值，即对应的查询表值）
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uint32_t xOrOut; // 表示计算结束后：进行的 XOR 的值
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uint32_t Check; // 表示 CRC 使用这个模型计算字符串 "123456789" 后得到的 CRC 值
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uint32_t Tab[1 << 8]; // 生成的查询表
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} const s_crc32_tab = {
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32,
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1,
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1,
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0x4C11DB7,
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0xFFFFFFFF,
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0xFFFFFFFF,
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0xCBF43926,
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{
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// CRC Table
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0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, // 0x00H ~ 0x03H
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0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3, // 0x04H ~ 0x07H
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0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988, // 0x08H ~ 0x0BH
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0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91, // 0x0CH ~ 0x0FH
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0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE, // 0x10H ~ 0x13H
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0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7, // 0x14H ~ 0x17H
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0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC, // 0x18H ~ 0x1BH
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0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5, // 0x1CH ~ 0x1FH
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0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172, // 0x20H ~ 0x23H
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0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B, // 0x24H ~ 0x27H
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0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940, // 0x28H ~ 0x2BH
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0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59, // 0x2CH ~ 0x2FH
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0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116, // 0x30H ~ 0x33H
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0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F, // 0x34H ~ 0x37H
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0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924, // 0x38H ~ 0x3BH
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0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D, // 0x3CH ~ 0x3FH
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0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A, // 0x40H ~ 0x43H
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0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433, // 0x44H ~ 0x47H
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0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818, // 0x48H ~ 0x4BH
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0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01, // 0x4CH ~ 0x4FH
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0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E, // 0x50H ~ 0x53H
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0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457, // 0x54H ~ 0x57H
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0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C, // 0x58H ~ 0x5BH
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0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65, // 0x5CH ~ 0x5FH
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0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2, // 0x60H ~ 0x63H
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0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB, // 0x64H ~ 0x67H
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0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0, // 0x68H ~ 0x6BH
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0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9, // 0x6CH ~ 0x6FH
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0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086, // 0x70H ~ 0x73H
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0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F, // 0x74H ~ 0x77H
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0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4, // 0x78H ~ 0x7BH
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0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD, // 0x7CH ~ 0x7FH
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0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A, // 0x80H ~ 0x83H
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0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683, // 0x84H ~ 0x87H
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0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8, // 0x88H ~ 0x8BH
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0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1, // 0x8CH ~ 0x8FH
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0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE, // 0x90H ~ 0x93H
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0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7, // 0x94H ~ 0x97H
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0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC, // 0x98H ~ 0x9BH
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0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5, // 0x9CH ~ 0x9FH
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0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252, // 0xA0H ~ 0xA3H
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0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B, // 0xA4H ~ 0xA7H
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0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60, // 0xA8H ~ 0xABH
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0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79, // 0xACH ~ 0xAFH
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0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236, // 0xB0H ~ 0xB3H
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0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F, // 0xB4H ~ 0xB7H
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0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04, // 0xB8H ~ 0xBBH
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0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D, // 0xBCH ~ 0xBFH
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0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A, // 0xC0H ~ 0xC3H
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0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713, // 0xC4H ~ 0xC7H
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0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, // 0xC8H ~ 0xCBH
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0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, // 0xCCH ~ 0xCFH
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0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E, // 0xD0H ~ 0xD3H
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0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777, // 0xD4H ~ 0xD7H
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0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C, // 0xD8H ~ 0xDBH
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0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45, // 0xDCH ~ 0xDFH
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0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2, // 0xE0H ~ 0xE3H
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0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB, // 0xE4H ~ 0xE7H
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0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0, // 0xE8H ~ 0xEBH
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0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9, // 0xECH ~ 0xEFH
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0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6, // 0xF0H ~ 0xF3H
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0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF, // 0xF4H ~ 0xF7H
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0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94, // 0xF8H ~ 0xFBH
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0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D // 0xFCH ~ 0xFFH
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},
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};
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uint32_t crc32_calc(uint32_t crc, const void *src, size_t size)
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{
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uint32_t remainder = crc ^ s_crc32_tab.xOrOut;
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uint32_t i;
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for (i = 0; i < size; i++)
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{
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remainder = s_crc32_tab.Tab[((uint8_t *)src)[i] ^ (remainder & 0xFF)] ^ (remainder >> 8);
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}
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return (remainder ^ s_crc32_tab.xOrOut);
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}
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