Program Listing for File crc.c¶
↰ Return to documentation for file (software/shared/crc/src/crc.c)
/*
The MIT License (MIT)
Copyright (c) 2026 James Nichol
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
#if !defined(DOXYGEN_SHOULD_SKIP_THIS)
#include <crc.h>
#include <stdbool.h>
static const uint8_t crc8_lookup_0x07[] = {
0x00,
0x07,
0x0e,
0x09,
0x1c,
0x1b,
0x12,
0x15,
0x38,
0x3f,
0x36,
0x31,
0x24,
0x23,
0x2a,
0x2d,
0x70,
0x77,
0x7e,
0x79,
0x6c,
0x6b,
0x62,
0x65,
0x48,
0x4f,
0x46,
0x41,
0x54,
0x53,
0x5a,
0x5d,
0xe0,
0xe7,
0xee,
0xe9,
0xfc,
0xfb,
0xf2,
0xf5,
0xd8,
0xdf,
0xd6,
0xd1,
0xc4,
0xc3,
0xca,
0xcd,
0x90,
0x97,
0x9e,
0x99,
0x8c,
0x8b,
0x82,
0x85,
0xa8,
0xaf,
0xa6,
0xa1,
0xb4,
0xb3,
0xba,
0xbd,
0xc7,
0xc0,
0xc9,
0xce,
0xdb,
0xdc,
0xd5,
0xd2,
0xff,
0xf8,
0xf1,
0xf6,
0xe3,
0xe4,
0xed,
0xea,
0xb7,
0xb0,
0xb9,
0xbe,
0xab,
0xac,
0xa5,
0xa2,
0x8f,
0x88,
0x81,
0x86,
0x93,
0x94,
0x9d,
0x9a,
0x27,
0x20,
0x29,
0x2e,
0x3b,
0x3c,
0x35,
0x32,
0x1f,
0x18,
0x11,
0x16,
0x03,
0x04,
0x0d,
0x0a,
0x57,
0x50,
0x59,
0x5e,
0x4b,
0x4c,
0x45,
0x42,
0x6f,
0x68,
0x61,
0x66,
0x73,
0x74,
0x7d,
0x7a,
0x89,
0x8e,
0x87,
0x80,
0x95,
0x92,
0x9b,
0x9c,
0xb1,
0xb6,
0xbf,
0xb8,
0xad,
0xaa,
0xa3,
0xa4,
0xf9,
0xfe,
0xf7,
0xf0,
0xe5,
0xe2,
0xeb,
0xec,
0xc1,
0xc6,
0xcf,
0xc8,
0xdd,
0xda,
0xd3,
0xd4,
0x69,
0x6e,
0x67,
0x60,
0x75,
0x72,
0x7b,
0x7c,
0x51,
0x56,
0x5f,
0x58,
0x4d,
0x4a,
0x43,
0x44,
0x19,
0x1e,
0x17,
0x10,
0x05,
0x02,
0x0b,
0x0c,
0x21,
0x26,
0x2f,
0x28,
0x3d,
0x3a,
0x33,
0x34,
0x4e,
0x49,
0x40,
0x47,
0x52,
0x55,
0x5c,
0x5b,
0x76,
0x71,
0x78,
0x7f,
0x6a,
0x6d,
0x64,
0x63,
0x3e,
0x39,
0x30,
0x37,
0x22,
0x25,
0x2c,
0x2b,
0x06,
0x01,
0x08,
0x0f,
0x1a,
0x1d,
0x14,
0x13,
0xae,
0xa9,
0xa0,
0xa7,
0xb2,
0xb5,
0xbc,
0xbb,
0x96,
0x91,
0x98,
0x9f,
0x8a,
0x8d,
0x84,
0x83,
0xde,
0xd9,
0xd0,
0xd7,
0xc2,
0xc5,
0xcc,
0xcb,
0xe6,
0xe1,
0xe8,
0xef,
0xfa,
0xfd,
0xf4,
0xf3,
};
static const uint8_t crc8_lookup_0x31[] = {
0x00,
0x31,
0x62,
0x53,
0xC4,
0xF5,
0xA6,
0x97,
0xB9,
0x88,
0xDB,
0xEA,
0x7D,
0x4C,
0x1F,
0x2E,
0x43,
0x72,
0x21,
0x10,
0x87,
0xB6,
0xE5,
0xD4,
0xFA,
0xCB,
0x98,
0xA9,
0x3E,
0x0F,
0x5C,
0x6D,
0x86,
0xB7,
0xE4,
0xD5,
0x42,
0x73,
0x20,
0x11,
0x3F,
0x0E,
0x5D,
0x6C,
0xFB,
0xCA,
0x99,
0xA8,
0xC5,
0xF4,
0xA7,
0x96,
0x01,
0x30,
0x63,
0x52,
0x7C,
0x4D,
0x1E,
0x2F,
0xB8,
0x89,
0xDA,
0xEB,
0x3D,
0x0C,
0x5F,
0x6E,
0xF9,
0xC8,
0x9B,
0xAA,
0x84,
0xB5,
0xE6,
0xD7,
0x40,
0x71,
0x22,
0x13,
0x7E,
0x4F,
0x1C,
0x2D,
0xBA,
0x8B,
0xD8,
0xE9,
0xC7,
0xF6,
0xA5,
0x94,
0x03,
0x32,
0x61,
0x50,
0xBB,
0x8A,
0xD9,
0xE8,
0x7F,
0x4E,
0x1D,
0x2C,
0x02,
0x33,
0x60,
0x51,
0xC6,
0xF7,
0xA4,
0x95,
0xF8,
0xC9,
0x9A,
0xAB,
0x3C,
0x0D,
0x5E,
0x6F,
0x41,
0x70,
0x23,
0x12,
0x85,
0xB4,
0xE7,
0xD6,
0x7A,
0x4B,
0x18,
0x29,
0xBE,
0x8F,
0xDC,
0xED,
0xC3,
0xF2,
0xA1,
0x90,
0x07,
0x36,
0x65,
0x54,
0x39,
0x08,
0x5B,
0x6A,
0xFD,
0xCC,
0x9F,
0xAE,
0x80,
0xB1,
0xE2,
0xD3,
0x44,
0x75,
0x26,
0x17,
0xFC,
0xCD,
0x9E,
0xAF,
0x38,
0x09,
0x5A,
0x6B,
0x45,
0x74,
0x27,
0x16,
0x81,
0xB0,
0xE3,
0xD2,
0xBF,
0x8E,
0xDD,
0xEC,
0x7B,
0x4A,
0x19,
0x28,
0x06,
0x37,
0x64,
0x55,
0xC2,
0xF3,
0xA0,
0x91,
0x47,
0x76,
0x25,
0x14,
0x83,
0xB2,
0xE1,
0xD0,
0xFE,
0xCF,
0x9C,
0xAD,
0x3A,
0x0B,
0x58,
0x69,
0x04,
0x35,
0x66,
0x57,
0xC0,
0xF1,
0xA2,
0x93,
0xBD,
0x8C,
0xDF,
0xEE,
0x79,
0x48,
0x1B,
0x2A,
0xC1,
0xF0,
0xA3,
0x92,
0x05,
0x34,
0x67,
0x56,
0x78,
0x49,
0x1A,
0x2B,
0xBC,
0x8D,
0xDE,
0xEF,
0x82,
0xB3,
0xE0,
0xD1,
0x46,
0x77,
0x24,
0x15,
0x3B,
0x0A,
0x59,
0x68,
0xFF,
0xCE,
0x9D,
0xAC,
};
static const uint8_t crc8_lookup_reflected_0x31[] = {
0x00,
0x5e,
0xbc,
0xe2,
0x61,
0x3f,
0xdd,
0x83,
0xc2,
0x9c,
0x7e,
0x20,
0xa3,
0xfd,
0x1f,
0x41,
0x9d,
0xc3,
0x21,
0x7f,
0xfc,
0xa2,
0x40,
0x1e,
0x5f,
0x01,
0xe3,
0xbd,
0x3e,
0x60,
0x82,
0xdc,
0x23,
0x7d,
0x9f,
0xc1,
0x42,
0x1c,
0xfe,
0xa0,
0xe1,
0xbf,
0x5d,
0x03,
0x80,
0xde,
0x3c,
0x62,
0xbe,
0xe0,
0x02,
0x5c,
0xdf,
0x81,
0x63,
0x3d,
0x7c,
0x22,
0xc0,
0x9e,
0x1d,
0x43,
0xa1,
0xff,
0x46,
0x18,
0xfa,
0xa4,
0x27,
0x79,
0x9b,
0xc5,
0x84,
0xda,
0x38,
0x66,
0xe5,
0xbb,
0x59,
0x07,
0xdb,
0x85,
0x67,
0x39,
0xba,
0xe4,
0x06,
0x58,
0x19,
0x47,
0xa5,
0xfb,
0x78,
0x26,
0xc4,
0x9a,
0x65,
0x3b,
0xd9,
0x87,
0x04,
0x5a,
0xb8,
0xe6,
0xa7,
0xf9,
0x1b,
0x45,
0xc6,
0x98,
0x7a,
0x24,
0xf8,
0xa6,
0x44,
0x1a,
0x99,
0xc7,
0x25,
0x7b,
0x3a,
0x64,
0x86,
0xd8,
0x5b,
0x05,
0xe7,
0xb9,
0x8c,
0xd2,
0x30,
0x6e,
0xed,
0xb3,
0x51,
0x0f,
0x4e,
0x10,
0xf2,
0xac,
0x2f,
0x71,
0x93,
0xcd,
0x11,
0x4f,
0xad,
0xf3,
0x70,
0x2e,
0xcc,
0x92,
0xd3,
0x8d,
0x6f,
0x31,
0xb2,
0xec,
0x0e,
0x50,
0xaf,
0xf1,
0x13,
0x4d,
0xce,
0x90,
0x72,
0x2c,
0x6d,
0x33,
0xd1,
0x8f,
0x0c,
0x52,
0xb0,
0xee,
0x32,
0x6c,
0x8e,
0xd0,
0x53,
0x0d,
0xef,
0xb1,
0xf0,
0xae,
0x4c,
0x12,
0x91,
0xcf,
0x2d,
0x73,
0xca,
0x94,
0x76,
0x28,
0xab,
0xf5,
0x17,
0x49,
0x08,
0x56,
0xb4,
0xea,
0x69,
0x37,
0xd5,
0x8b,
0x57,
0x09,
0xeb,
0xb5,
0x36,
0x68,
0x8a,
0xd4,
0x95,
0xcb,
0x29,
0x77,
0xf4,
0xaa,
0x48,
0x16,
0xe9,
0xb7,
0x55,
0x0b,
0x88,
0xd6,
0x34,
0x6a,
0x2b,
0x75,
0x97,
0xc9,
0x4a,
0x14,
0xf6,
0xa8,
0x74,
0x2a,
0xc8,
0x96,
0x15,
0x4b,
0xa9,
0xf7,
0xb6,
0xe8,
0x0a,
0x54,
0xd7,
0x89,
0x6b,
0x35,
};
static const uint16_t crc16_lookup_0x1021[] = {
0x0000,
0x1021,
0x2042,
0x3063,
0x4084,
0x50a5,
0x60c6,
0x70e7,
0x8108,
0x9129,
0xa14a,
0xb16b,
0xc18c,
0xd1ad,
0xe1ce,
0xf1ef,
0x1231,
0x0210,
0x3273,
0x2252,
0x52b5,
0x4294,
0x72f7,
0x62d6,
0x9339,
0x8318,
0xb37b,
0xa35a,
0xd3bd,
0xc39c,
0xf3ff,
0xe3de,
0x2462,
0x3443,
0x0420,
0x1401,
0x64e6,
0x74c7,
0x44a4,
0x5485,
0xa56a,
0xb54b,
0x8528,
0x9509,
0xe5ee,
0xf5cf,
0xc5ac,
0xd58d,
0x3653,
0x2672,
0x1611,
0x0630,
0x76d7,
0x66f6,
0x5695,
0x46b4,
0xb75b,
0xa77a,
0x9719,
0x8738,
0xf7df,
0xe7fe,
0xd79d,
0xc7bc,
0x48c4,
0x58e5,
0x6886,
0x78a7,
0x0840,
0x1861,
0x2802,
0x3823,
0xc9cc,
0xd9ed,
0xe98e,
0xf9af,
0x8948,
0x9969,
0xa90a,
0xb92b,
0x5af5,
0x4ad4,
0x7ab7,
0x6a96,
0x1a71,
0x0a50,
0x3a33,
0x2a12,
0xdbfd,
0xcbdc,
0xfbbf,
0xeb9e,
0x9b79,
0x8b58,
0xbb3b,
0xab1a,
0x6ca6,
0x7c87,
0x4ce4,
0x5cc5,
0x2c22,
0x3c03,
0x0c60,
0x1c41,
0xedae,
0xfd8f,
0xcdec,
0xddcd,
0xad2a,
0xbd0b,
0x8d68,
0x9d49,
0x7e97,
0x6eb6,
0x5ed5,
0x4ef4,
0x3e13,
0x2e32,
0x1e51,
0x0e70,
0xff9f,
0xefbe,
0xdfdd,
0xcffc,
0xbf1b,
0xaf3a,
0x9f59,
0x8f78,
0x9188,
0x81a9,
0xb1ca,
0xa1eb,
0xd10c,
0xc12d,
0xf14e,
0xe16f,
0x1080,
0x00a1,
0x30c2,
0x20e3,
0x5004,
0x4025,
0x7046,
0x6067,
0x83b9,
0x9398,
0xa3fb,
0xb3da,
0xc33d,
0xd31c,
0xe37f,
0xf35e,
0x02b1,
0x1290,
0x22f3,
0x32d2,
0x4235,
0x5214,
0x6277,
0x7256,
0xb5ea,
0xa5cb,
0x95a8,
0x8589,
0xf56e,
0xe54f,
0xd52c,
0xc50d,
0x34e2,
0x24c3,
0x14a0,
0x0481,
0x7466,
0x6447,
0x5424,
0x4405,
0xa7db,
0xb7fa,
0x8799,
0x97b8,
0xe75f,
0xf77e,
0xc71d,
0xd73c,
0x26d3,
0x36f2,
0x0691,
0x16b0,
0x6657,
0x7676,
0x4615,
0x5634,
0xd94c,
0xc96d,
0xf90e,
0xe92f,
0x99c8,
0x89e9,
0xb98a,
0xa9ab,
0x5844,
0x4865,
0x7806,
0x6827,
0x18c0,
0x08e1,
0x3882,
0x28a3,
0xcb7d,
0xdb5c,
0xeb3f,
0xfb1e,
0x8bf9,
0x9bd8,
0xabbb,
0xbb9a,
0x4a75,
0x5a54,
0x6a37,
0x7a16,
0x0af1,
0x1ad0,
0x2ab3,
0x3a92,
0xfd2e,
0xed0f,
0xdd6c,
0xcd4d,
0xbdaa,
0xad8b,
0x9de8,
0x8dc9,
0x7c26,
0x6c07,
0x5c64,
0x4c45,
0x3ca2,
0x2c83,
0x1ce0,
0x0cc1,
0xef1f,
0xff3e,
0xcf5d,
0xdf7c,
0xaf9b,
0xbfba,
0x8fd9,
0x9ff8,
0x6e17,
0x7e36,
0x4e55,
0x5e74,
0x2e93,
0x3eb2,
0x0ed1,
0x1ef0,
};
static const uint16_t crc16_lookup_reflected_0x8005[] = {
0x0000,
0xc0c1,
0xc181,
0x0140,
0xc301,
0x03c0,
0x0280,
0xc241,
0xc601,
0x06c0,
0x0780,
0xc741,
0x0500,
0xc5c1,
0xc481,
0x0440,
0xcc01,
0x0cc0,
0x0d80,
0xcd41,
0x0f00,
0xcfc1,
0xce81,
0x0e40,
0x0a00,
0xcac1,
0xcb81,
0x0b40,
0xc901,
0x09c0,
0x0880,
0xc841,
0xd801,
0x18c0,
0x1980,
0xd941,
0x1b00,
0xdbc1,
0xda81,
0x1a40,
0x1e00,
0xdec1,
0xdf81,
0x1f40,
0xdd01,
0x1dc0,
0x1c80,
0xdc41,
0x1400,
0xd4c1,
0xd581,
0x1540,
0xd701,
0x17c0,
0x1680,
0xd641,
0xd201,
0x12c0,
0x1380,
0xd341,
0x1100,
0xd1c1,
0xd081,
0x1040,
0xf001,
0x30c0,
0x3180,
0xf141,
0x3300,
0xf3c1,
0xf281,
0x3240,
0x3600,
0xf6c1,
0xf781,
0x3740,
0xf501,
0x35c0,
0x3480,
0xf441,
0x3c00,
0xfcc1,
0xfd81,
0x3d40,
0xff01,
0x3fc0,
0x3e80,
0xfe41,
0xfa01,
0x3ac0,
0x3b80,
0xfb41,
0x3900,
0xf9c1,
0xf881,
0x3840,
0x2800,
0xe8c1,
0xe981,
0x2940,
0xeb01,
0x2bc0,
0x2a80,
0xea41,
0xee01,
0x2ec0,
0x2f80,
0xef41,
0x2d00,
0xedc1,
0xec81,
0x2c40,
0xe401,
0x24c0,
0x2580,
0xe541,
0x2700,
0xe7c1,
0xe681,
0x2640,
0x2200,
0xe2c1,
0xe381,
0x2340,
0xe101,
0x21c0,
0x2080,
0xe041,
0xa001,
0x60c0,
0x6180,
0xa141,
0x6300,
0xa3c1,
0xa281,
0x6240,
0x6600,
0xa6c1,
0xa781,
0x6740,
0xa501,
0x65c0,
0x6480,
0xa441,
0x6c00,
0xacc1,
0xad81,
0x6d40,
0xaf01,
0x6fc0,
0x6e80,
0xae41,
0xaa01,
0x6ac0,
0x6b80,
0xab41,
0x6900,
0xa9c1,
0xa881,
0x6840,
0x7800,
0xb8c1,
0xb981,
0x7940,
0xbb01,
0x7bc0,
0x7a80,
0xba41,
0xbe01,
0x7ec0,
0x7f80,
0xbf41,
0x7d00,
0xbdc1,
0xbc81,
0x7c40,
0xb401,
0x74c0,
0x7580,
0xb541,
0x7700,
0xb7c1,
0xb681,
0x7640,
0x7200,
0xb2c1,
0xb381,
0x7340,
0xb101,
0x71c0,
0x7080,
0xb041,
0x5000,
0x90c1,
0x9181,
0x5140,
0x9301,
0x53c0,
0x5280,
0x9241,
0x9601,
0x56c0,
0x5780,
0x9741,
0x5500,
0x95c1,
0x9481,
0x5440,
0x9c01,
0x5cc0,
0x5d80,
0x9d41,
0x5f00,
0x9fc1,
0x9e81,
0x5e40,
0x5a00,
0x9ac1,
0x9b81,
0x5b40,
0x9901,
0x59c0,
0x5880,
0x9841,
0x8801,
0x48c0,
0x4980,
0x8941,
0x4b00,
0x8bc1,
0x8a81,
0x4a40,
0x4e00,
0x8ec1,
0x8f81,
0x4f40,
0x8d01,
0x4dc0,
0x4c80,
0x8c41,
0x4400,
0x84c1,
0x8581,
0x4540,
0x8701,
0x47c0,
0x4680,
0x8641,
0x8201,
0x42c0,
0x4380,
0x8341,
0x4100,
0x81c1,
0x8081,
0x4040,
};
static const uint32_t crc32_lookup_0x04C11DB7[] = {
0x00000000,
0x04c11db7,
0x09823b6e,
0x0d4326d9,
0x130476dc,
0x17c56b6b,
0x1a864db2,
0x1e475005,
0x2608edb8,
0x22c9f00f,
0x2f8ad6d6,
0x2b4bcb61,
0x350c9b64,
0x31cd86d3,
0x3c8ea00a,
0x384fbdbd,
0x4c11db70,
0x48d0c6c7,
0x4593e01e,
0x4152fda9,
0x5f15adac,
0x5bd4b01b,
0x569796c2,
0x52568b75,
0x6a1936c8,
0x6ed82b7f,
0x639b0da6,
0x675a1011,
0x791d4014,
0x7ddc5da3,
0x709f7b7a,
0x745e66cd,
0x9823b6e0,
0x9ce2ab57,
0x91a18d8e,
0x95609039,
0x8b27c03c,
0x8fe6dd8b,
0x82a5fb52,
0x8664e6e5,
0xbe2b5b58,
0xbaea46ef,
0xb7a96036,
0xb3687d81,
0xad2f2d84,
0xa9ee3033,
0xa4ad16ea,
0xa06c0b5d,
0xd4326d90,
0xd0f37027,
0xddb056fe,
0xd9714b49,
0xc7361b4c,
0xc3f706fb,
0xceb42022,
0xca753d95,
0xf23a8028,
0xf6fb9d9f,
0xfbb8bb46,
0xff79a6f1,
0xe13ef6f4,
0xe5ffeb43,
0xe8bccd9a,
0xec7dd02d,
0x34867077,
0x30476dc0,
0x3d044b19,
0x39c556ae,
0x278206ab,
0x23431b1c,
0x2e003dc5,
0x2ac12072,
0x128e9dcf,
0x164f8078,
0x1b0ca6a1,
0x1fcdbb16,
0x018aeb13,
0x054bf6a4,
0x0808d07d,
0x0cc9cdca,
0x7897ab07,
0x7c56b6b0,
0x71159069,
0x75d48dde,
0x6b93dddb,
0x6f52c06c,
0x6211e6b5,
0x66d0fb02,
0x5e9f46bf,
0x5a5e5b08,
0x571d7dd1,
0x53dc6066,
0x4d9b3063,
0x495a2dd4,
0x44190b0d,
0x40d816ba,
0xaca5c697,
0xa864db20,
0xa527fdf9,
0xa1e6e04e,
0xbfa1b04b,
0xbb60adfc,
0xb6238b25,
0xb2e29692,
0x8aad2b2f,
0x8e6c3698,
0x832f1041,
0x87ee0df6,
0x99a95df3,
0x9d684044,
0x902b669d,
0x94ea7b2a,
0xe0b41de7,
0xe4750050,
0xe9362689,
0xedf73b3e,
0xf3b06b3b,
0xf771768c,
0xfa325055,
0xfef34de2,
0xc6bcf05f,
0xc27dede8,
0xcf3ecb31,
0xcbffd686,
0xd5b88683,
0xd1799b34,
0xdc3abded,
0xd8fba05a,
0x690ce0ee,
0x6dcdfd59,
0x608edb80,
0x644fc637,
0x7a089632,
0x7ec98b85,
0x738aad5c,
0x774bb0eb,
0x4f040d56,
0x4bc510e1,
0x46863638,
0x42472b8f,
0x5c007b8a,
0x58c1663d,
0x558240e4,
0x51435d53,
0x251d3b9e,
0x21dc2629,
0x2c9f00f0,
0x285e1d47,
0x36194d42,
0x32d850f5,
0x3f9b762c,
0x3b5a6b9b,
0x0315d626,
0x07d4cb91,
0x0a97ed48,
0x0e56f0ff,
0x1011a0fa,
0x14d0bd4d,
0x19939b94,
0x1d528623,
0xf12f560e,
0xf5ee4bb9,
0xf8ad6d60,
0xfc6c70d7,
0xe22b20d2,
0xe6ea3d65,
0xeba91bbc,
0xef68060b,
0xd727bbb6,
0xd3e6a601,
0xdea580d8,
0xda649d6f,
0xc423cd6a,
0xc0e2d0dd,
0xcda1f604,
0xc960ebb3,
0xbd3e8d7e,
0xb9ff90c9,
0xb4bcb610,
0xb07daba7,
0xae3afba2,
0xaafbe615,
0xa7b8c0cc,
0xa379dd7b,
0x9b3660c6,
0x9ff77d71,
0x92b45ba8,
0x9675461f,
0x8832161a,
0x8cf30bad,
0x81b02d74,
0x857130c3,
0x5d8a9099,
0x594b8d2e,
0x5408abf7,
0x50c9b640,
0x4e8ee645,
0x4a4ffbf2,
0x470cdd2b,
0x43cdc09c,
0x7b827d21,
0x7f436096,
0x7200464f,
0x76c15bf8,
0x68860bfd,
0x6c47164a,
0x61043093,
0x65c52d24,
0x119b4be9,
0x155a565e,
0x18197087,
0x1cd86d30,
0x029f3d35,
0x065e2082,
0x0b1d065b,
0x0fdc1bec,
0x3793a651,
0x3352bbe6,
0x3e119d3f,
0x3ad08088,
0x2497d08d,
0x2056cd3a,
0x2d15ebe3,
0x29d4f654,
0xc5a92679,
0xc1683bce,
0xcc2b1d17,
0xc8ea00a0,
0xd6ad50a5,
0xd26c4d12,
0xdf2f6bcb,
0xdbee767c,
0xe3a1cbc1,
0xe760d676,
0xea23f0af,
0xeee2ed18,
0xf0a5bd1d,
0xf464a0aa,
0xf9278673,
0xfde69bc4,
0x89b8fd09,
0x8d79e0be,
0x803ac667,
0x84fbdbd0,
0x9abc8bd5,
0x9e7d9662,
0x933eb0bb,
0x97ffad0c,
0xafb010b1,
0xab710d06,
0xa6322bdf,
0xa2f33668,
0xbcb4666d,
0xb8757bda,
0xb5365d03,
0xb1f740b4,
};
static const uint32_t crc32_lookup_reflected_0x04C11DB7[] = {
0x00000000,
0x77073096,
0xee0e612c,
0x990951ba,
0x076dc419,
0x706af48f,
0xe963a535,
0x9e6495a3,
0x0edb8832,
0x79dcb8a4,
0xe0d5e91e,
0x97d2d988,
0x09b64c2b,
0x7eb17cbd,
0xe7b82d07,
0x90bf1d91,
0x1db71064,
0x6ab020f2,
0xf3b97148,
0x84be41de,
0x1adad47d,
0x6ddde4eb,
0xf4d4b551,
0x83d385c7,
0x136c9856,
0x646ba8c0,
0xfd62f97a,
0x8a65c9ec,
0x14015c4f,
0x63066cd9,
0xfa0f3d63,
0x8d080df5,
0x3b6e20c8,
0x4c69105e,
0xd56041e4,
0xa2677172,
0x3c03e4d1,
0x4b04d447,
0xd20d85fd,
0xa50ab56b,
0x35b5a8fa,
0x42b2986c,
0xdbbbc9d6,
0xacbcf940,
0x32d86ce3,
0x45df5c75,
0xdcd60dcf,
0xabd13d59,
0x26d930ac,
0x51de003a,
0xc8d75180,
0xbfd06116,
0x21b4f4b5,
0x56b3c423,
0xcfba9599,
0xb8bda50f,
0x2802b89e,
0x5f058808,
0xc60cd9b2,
0xb10be924,
0x2f6f7c87,
0x58684c11,
0xc1611dab,
0xb6662d3d,
0x76dc4190,
0x01db7106,
0x98d220bc,
0xefd5102a,
0x71b18589,
0x06b6b51f,
0x9fbfe4a5,
0xe8b8d433,
0x7807c9a2,
0x0f00f934,
0x9609a88e,
0xe10e9818,
0x7f6a0dbb,
0x086d3d2d,
0x91646c97,
0xe6635c01,
0x6b6b51f4,
0x1c6c6162,
0x856530d8,
0xf262004e,
0x6c0695ed,
0x1b01a57b,
0x8208f4c1,
0xf50fc457,
0x65b0d9c6,
0x12b7e950,
0x8bbeb8ea,
0xfcb9887c,
0x62dd1ddf,
0x15da2d49,
0x8cd37cf3,
0xfbd44c65,
0x4db26158,
0x3ab551ce,
0xa3bc0074,
0xd4bb30e2,
0x4adfa541,
0x3dd895d7,
0xa4d1c46d,
0xd3d6f4fb,
0x4369e96a,
0x346ed9fc,
0xad678846,
0xda60b8d0,
0x44042d73,
0x33031de5,
0xaa0a4c5f,
0xdd0d7cc9,
0x5005713c,
0x270241aa,
0xbe0b1010,
0xc90c2086,
0x5768b525,
0x206f85b3,
0xb966d409,
0xce61e49f,
0x5edef90e,
0x29d9c998,
0xb0d09822,
0xc7d7a8b4,
0x59b33d17,
0x2eb40d81,
0xb7bd5c3b,
0xc0ba6cad,
0xedb88320,
0x9abfb3b6,
0x03b6e20c,
0x74b1d29a,
0xead54739,
0x9dd277af,
0x04db2615,
0x73dc1683,
0xe3630b12,
0x94643b84,
0x0d6d6a3e,
0x7a6a5aa8,
0xe40ecf0b,
0x9309ff9d,
0x0a00ae27,
0x7d079eb1,
0xf00f9344,
0x8708a3d2,
0x1e01f268,
0x6906c2fe,
0xf762575d,
0x806567cb,
0x196c3671,
0x6e6b06e7,
0xfed41b76,
0x89d32be0,
0x10da7a5a,
0x67dd4acc,
0xf9b9df6f,
0x8ebeeff9,
0x17b7be43,
0x60b08ed5,
0xd6d6a3e8,
0xa1d1937e,
0x38d8c2c4,
0x4fdff252,
0xd1bb67f1,
0xa6bc5767,
0x3fb506dd,
0x48b2364b,
0xd80d2bda,
0xaf0a1b4c,
0x36034af6,
0x41047a60,
0xdf60efc3,
0xa867df55,
0x316e8eef,
0x4669be79,
0xcb61b38c,
0xbc66831a,
0x256fd2a0,
0x5268e236,
0xcc0c7795,
0xbb0b4703,
0x220216b9,
0x5505262f,
0xc5ba3bbe,
0xb2bd0b28,
0x2bb45a92,
0x5cb36a04,
0xc2d7ffa7,
0xb5d0cf31,
0x2cd99e8b,
0x5bdeae1d,
0x9b64c2b0,
0xec63f226,
0x756aa39c,
0x026d930a,
0x9c0906a9,
0xeb0e363f,
0x72076785,
0x05005713,
0x95bf4a82,
0xe2b87a14,
0x7bb12bae,
0x0cb61b38,
0x92d28e9b,
0xe5d5be0d,
0x7cdcefb7,
0x0bdbdf21,
0x86d3d2d4,
0xf1d4e242,
0x68ddb3f8,
0x1fda836e,
0x81be16cd,
0xf6b9265b,
0x6fb077e1,
0x18b74777,
0x88085ae6,
0xff0f6a70,
0x66063bca,
0x11010b5c,
0x8f659eff,
0xf862ae69,
0x616bffd3,
0x166ccf45,
0xa00ae278,
0xd70dd2ee,
0x4e048354,
0x3903b3c2,
0xa7672661,
0xd06016f7,
0x4969474d,
0x3e6e77db,
0xaed16a4a,
0xd9d65adc,
0x40df0b66,
0x37d83bf0,
0xa9bcae53,
0xdebb9ec5,
0x47b2cf7f,
0x30b5ffe9,
0xbdbdf21c,
0xcabac28a,
0x53b39330,
0x24b4a3a6,
0xbad03605,
0xcdd70693,
0x54de5729,
0x23d967bf,
0xb3667a2e,
0xc4614ab8,
0x5d681b02,
0x2a6f2b94,
0xb40bbe37,
0xc30c8ea1,
0x5a05df1b,
0x2d02ef8d,
};
static const uint32_t crc32_C_lookup[] = {
0x00000000,
0xf26b8303,
0xe13b70f7,
0x1350f3f4,
0xc79a971f,
0x35f1141c,
0x26a1e7e8,
0xd4ca64eb,
0x8ad958cf,
0x78b2dbcc,
0x6be22838,
0x9989ab3b,
0x4d43cfd0,
0xbf284cd3,
0xac78bf27,
0x5e133c24,
0x105ec76f,
0xe235446c,
0xf165b798,
0x030e349b,
0xd7c45070,
0x25afd373,
0x36ff2087,
0xc494a384,
0x9a879fa0,
0x68ec1ca3,
0x7bbcef57,
0x89d76c54,
0x5d1d08bf,
0xaf768bbc,
0xbc267848,
0x4e4dfb4b,
0x20bd8ede,
0xd2d60ddd,
0xc186fe29,
0x33ed7d2a,
0xe72719c1,
0x154c9ac2,
0x061c6936,
0xf477ea35,
0xaa64d611,
0x580f5512,
0x4b5fa6e6,
0xb93425e5,
0x6dfe410e,
0x9f95c20d,
0x8cc531f9,
0x7eaeb2fa,
0x30e349b1,
0xc288cab2,
0xd1d83946,
0x23b3ba45,
0xf779deae,
0x05125dad,
0x1642ae59,
0xe4292d5a,
0xba3a117e,
0x4851927d,
0x5b016189,
0xa96ae28a,
0x7da08661,
0x8fcb0562,
0x9c9bf696,
0x6ef07595,
0x417b1dbc,
0xb3109ebf,
0xa0406d4b,
0x522bee48,
0x86e18aa3,
0x748a09a0,
0x67dafa54,
0x95b17957,
0xcba24573,
0x39c9c670,
0x2a993584,
0xd8f2b687,
0x0c38d26c,
0xfe53516f,
0xed03a29b,
0x1f682198,
0x5125dad3,
0xa34e59d0,
0xb01eaa24,
0x42752927,
0x96bf4dcc,
0x64d4cecf,
0x77843d3b,
0x85efbe38,
0xdbfc821c,
0x2997011f,
0x3ac7f2eb,
0xc8ac71e8,
0x1c661503,
0xee0d9600,
0xfd5d65f4,
0x0f36e6f7,
0x61c69362,
0x93ad1061,
0x80fde395,
0x72966096,
0xa65c047d,
0x5437877e,
0x4767748a,
0xb50cf789,
0xeb1fcbad,
0x197448ae,
0x0a24bb5a,
0xf84f3859,
0x2c855cb2,
0xdeeedfb1,
0xcdbe2c45,
0x3fd5af46,
0x7198540d,
0x83f3d70e,
0x90a324fa,
0x62c8a7f9,
0xb602c312,
0x44694011,
0x5739b3e5,
0xa55230e6,
0xfb410cc2,
0x092a8fc1,
0x1a7a7c35,
0xe811ff36,
0x3cdb9bdd,
0xceb018de,
0xdde0eb2a,
0x2f8b6829,
0x82f63b78,
0x709db87b,
0x63cd4b8f,
0x91a6c88c,
0x456cac67,
0xb7072f64,
0xa457dc90,
0x563c5f93,
0x082f63b7,
0xfa44e0b4,
0xe9141340,
0x1b7f9043,
0xcfb5f4a8,
0x3dde77ab,
0x2e8e845f,
0xdce5075c,
0x92a8fc17,
0x60c37f14,
0x73938ce0,
0x81f80fe3,
0x55326b08,
0xa759e80b,
0xb4091bff,
0x466298fc,
0x1871a4d8,
0xea1a27db,
0xf94ad42f,
0x0b21572c,
0xdfeb33c7,
0x2d80b0c4,
0x3ed04330,
0xccbbc033,
0xa24bb5a6,
0x502036a5,
0x4370c551,
0xb11b4652,
0x65d122b9,
0x97baa1ba,
0x84ea524e,
0x7681d14d,
0x2892ed69,
0xdaf96e6a,
0xc9a99d9e,
0x3bc21e9d,
0xef087a76,
0x1d63f975,
0x0e330a81,
0xfc588982,
0xb21572c9,
0x407ef1ca,
0x532e023e,
0xa145813d,
0x758fe5d6,
0x87e466d5,
0x94b49521,
0x66df1622,
0x38cc2a06,
0xcaa7a905,
0xd9f75af1,
0x2b9cd9f2,
0xff56bd19,
0x0d3d3e1a,
0x1e6dcdee,
0xec064eed,
0xc38d26c4,
0x31e6a5c7,
0x22b65633,
0xd0ddd530,
0x0417b1db,
0xf67c32d8,
0xe52cc12c,
0x1747422f,
0x49547e0b,
0xbb3ffd08,
0xa86f0efc,
0x5a048dff,
0x8ecee914,
0x7ca56a17,
0x6ff599e3,
0x9d9e1ae0,
0xd3d3e1ab,
0x21b862a8,
0x32e8915c,
0xc083125f,
0x144976b4,
0xe622f5b7,
0xf5720643,
0x07198540,
0x590ab964,
0xab613a67,
0xb831c993,
0x4a5a4a90,
0x9e902e7b,
0x6cfbad78,
0x7fab5e8c,
0x8dc0dd8f,
0xe330a81a,
0x115b2b19,
0x020bd8ed,
0xf0605bee,
0x24aa3f05,
0xd6c1bc06,
0xc5914ff2,
0x37faccf1,
0x69e9f0d5,
0x9b8273d6,
0x88d28022,
0x7ab90321,
0xae7367ca,
0x5c18e4c9,
0x4f48173d,
0xbd23943e,
0xf36e6f75,
0x0105ec76,
0x12551f82,
0xe03e9c81,
0x34f4f86a,
0xc69f7b69,
0xd5cf889d,
0x27a40b9e,
0x79b737ba,
0x8bdcb4b9,
0x988c474d,
0x6ae7c44e,
0xbe2da0a5,
0x4c4623a6,
0x5f16d052,
0xad7d5351,
};
static uint8_t crc8_generic(const uint8_t* data, const size_t len, const uint8_t* lookup, const uint8_t init, const bool invert_result)
{
uint8_t crc = init;
for (size_t i = 0; i < len; i++)
crc = lookup[data[i] ^ crc];
if (invert_result)
crc = ~crc;
return crc;
}
uint8_t crc8(const uint8_t* data, const size_t len)
{
return crc8_generic(data, len, crc8_lookup_0x07, 0x00, false);
}
uint8_t crc8_maxim(const uint8_t* data, const size_t len)
{
return crc8_generic(data, len, crc8_lookup_reflected_0x31, 0x00, false);
}
uint8_t crc8_sht75(const uint8_t* data, const size_t len)
{
return crc8_generic(data, len, crc8_lookup_0x31, 0x00, false);
}
static uint16_t crc16_generic(const uint8_t* data, const size_t len, const uint16_t* lookup, const uint16_t init, const bool invert_result)
{
uint16_t crc = init;
for (size_t i = 0; i < len; i++)
crc = (crc << 8) ^ lookup[(crc >> 8) ^ data[i]];
if (invert_result)
crc = ~crc;
return crc;
}
static uint16_t crc16_reflected_generic(const uint8_t* data, const size_t len, const uint16_t* lookup, const uint16_t init, const bool invert_result)
{
uint16_t crc = init;
for (size_t i = 0; i < len; i++)
crc = (crc >> 8) ^ lookup[(data[i] ^ crc) & 0xFF];
if (invert_result)
crc = ~crc;
return crc;
}
uint16_t crc16(const uint8_t* data, const size_t len)
{
return crc16_reflected_generic(data, len, crc16_lookup_reflected_0x8005, 0x0000, false);
}
uint16_t crc16_ccitt(const uint8_t* data, const size_t len)
{
return crc16_generic(data, len, crc16_lookup_0x1021, 0x1D0F, false);
}
uint16_t crc16_modbus(const uint8_t* data, const size_t len)
{
return crc16_reflected_generic(data, len, crc16_lookup_reflected_0x8005, 0xFFFF, false);
}
uint16_t crc16_usb(const uint8_t* data, const size_t len)
{
return crc16_reflected_generic(data, len, crc16_lookup_reflected_0x8005, 0xFFFF, true);
}
uint16_t crc16_xmodem(const uint8_t* data, const size_t len)
{
return crc16_generic(data, len, crc16_lookup_0x1021, 0x0000, false);
}
static uint32_t crc32_generic(const uint8_t* data, const size_t len, const uint32_t* lookup, const uint32_t init, const bool invert_result)
{
uint32_t crc = init;
for (size_t i = 0; i < len; i++)
crc = (crc << 8) ^ lookup[((crc >> 24) ^ data[i])];
if (invert_result)
crc = ~crc;
return crc;
}
static uint32_t crc32_reflected_generic(const uint8_t* data, const size_t len, const uint32_t* lookup, const uint32_t init, const bool invert_result)
{
uint32_t crc = init;
for (size_t i = 0; i < len; i++)
crc = (crc >> 8) ^ lookup[(data[i] ^ crc) & 0xFF];
if (invert_result)
crc = ~crc;
return crc;
}
uint32_t crc32(const uint8_t* data, const size_t len)
{
return crc32_reflected_generic(data, len, crc32_lookup_reflected_0x04C11DB7, 0xFFFFFFFF, true);
}
uint32_t crc32_bzip2(const uint8_t* data, const size_t len)
{
return crc32_generic(data, len, crc32_lookup_0x04C11DB7, 0xFFFFFFFF, true);
}
uint32_t crc32_mpeg2(const uint8_t* data, const size_t len)
{
return crc32_generic(data, len, crc32_lookup_0x04C11DB7, 0xFFFFFFFF, false);
}
uint32_t crc32_sata(const uint8_t* data, const size_t len)
{
return crc32_generic(data, len, crc32_lookup_0x04C11DB7, 0x52325032, false);
}
uint32_t crc32_C(const uint8_t* data, const size_t len)
{
return crc32_reflected_generic(data, len, crc32_C_lookup, 0xFFFFFFFF, true);
}
#endif // DOXYGEN_SHOULD_SKIP_THIS