CRC16-IBM/MAXIM/USB/MODBUS/CCITT/CCITT-FALSE/X25/XMODEM查表算法

一、适用范围

CRC-16除了CRC-16/DNP外的所有查表算法。

二、查表内容

2.1、多项式8005查表内容

uint8_t const CRC16_8005_DATASHEET_H[] =
{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, 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, 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, 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, 0x40,0x00, 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, 0x41,0x01, 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
};
uint8_t const CRC16_8005_DATASHEET_L[] =
{0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2,0xC6, 0x06, 0x07, 0xC7, 0x05, 0xC5, 0xC4, 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, 0x30, 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, 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, 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, 0x9A, 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
};

2.2、多项式1021查表内容

uint8_t const CRC16_1021_DATASHEET_H[] =
{0X00, 0X89, 0X12, 0X9B, 0X24, 0XAD, 0X36, 0XBF,0X48, 0XC1, 0X5A, 0XD3, 0X6C, 0XE5, 0X7E, 0XF7,0X81, 0X08, 0X93, 0X1A, 0XA5, 0X2C, 0XB7, 0X3E,0XC9, 0X40, 0XDB, 0X52, 0XED, 0X64, 0XFF, 0X76,0X02, 0X8B, 0X10, 0X99, 0X26, 0XAF, 0X34, 0XBD,0X4A, 0XC3, 0X58, 0XD1, 0X6E, 0XE7, 0X7C, 0XF5,0X83, 0X0A, 0X91, 0X18, 0XA7, 0X2E, 0XB5, 0X3C,0XCB, 0X42, 0XD9, 0X50, 0XEF, 0X66, 0XFD, 0X74,0X04, 0X8D, 0X16, 0X9F, 0X20, 0XA9, 0X32, 0XBB,0X4C, 0XC5, 0X5E, 0XD7, 0X68, 0XE1, 0X7A, 0XF3,0X85, 0X0C, 0X97, 0X1E, 0XA1, 0X28, 0XB3, 0X3A,0XCD, 0X44, 0XDF, 0X56, 0XE9, 0X60, 0XFB, 0X72,0X06, 0X8F, 0X14, 0X9D, 0X22, 0XAB, 0X30, 0XB9,0X4E, 0XC7, 0X5C, 0XD5, 0X6A, 0XE3, 0X78, 0XF1,0X87, 0X0E, 0X95, 0X1C, 0XA3, 0X2A, 0XB1, 0X38,0XCF, 0X46, 0XDD, 0X54, 0XEB, 0X62, 0XF9, 0X70,0X08, 0X81, 0X1A, 0X93, 0X2C, 0XA5, 0X3E, 0XB7,0X40, 0XC9, 0X52, 0XDB, 0X64, 0XED, 0X76, 0XFF,0X89, 0X00, 0X9B, 0X12, 0XAD, 0X24, 0XBF, 0X36,0XC1, 0X48, 0XD3, 0X5A, 0XE5, 0X6C, 0XF7, 0X7E,0X0A, 0X83, 0X18, 0X91, 0X2E, 0XA7, 0X3C, 0XB5,0X42, 0XCB, 0X50, 0XD9, 0X66, 0XEF, 0X74, 0XFD,0X8B, 0X02, 0X99, 0X10, 0XAF, 0X26, 0XBD, 0X34,0XC3, 0X4A, 0XD1, 0X58, 0XE7, 0X6E, 0XF5, 0X7C,0X0C, 0X85, 0X1E, 0X97, 0X28, 0XA1, 0X3A, 0XB3,0X44, 0XCD, 0X56, 0XDF, 0X60, 0XE9, 0X72, 0XFB,0X8D, 0X04, 0X9F, 0X16, 0XA9, 0X20, 0XBB, 0X32,0XC5, 0X4C, 0XD7, 0X5E, 0XE1, 0X68, 0XF3, 0X7A,0X0E, 0X87, 0X1C, 0X95, 0X2A, 0XA3, 0X38, 0XB1,0X46, 0XCF, 0X54, 0XDD, 0X62, 0XEB, 0X70, 0XF9,0X8F, 0X06, 0X9D, 0X14, 0XAB, 0X22, 0XB9, 0X30,0XC7, 0X4E, 0XD5, 0X5C, 0XE3, 0X6A, 0XF1, 0X78
};uint8_t const CRC16_1021_DATASHEET_L[] =
{0X00, 0X11, 0X23, 0X32, 0X46, 0X57, 0X65, 0X74,0X8C, 0X9D, 0XAF, 0XBE, 0XCA, 0XDB, 0XE9, 0XF8,0X10, 0X01, 0X33, 0X22, 0X56, 0X47, 0X75, 0X64,0X9C, 0X8D, 0XBF, 0XAE, 0XDA, 0XCB, 0XF9, 0XE8,0X21, 0X30, 0X02, 0X13, 0X67, 0X76, 0X44, 0X55,0XAD, 0XBC, 0X8E, 0X9F, 0XEB, 0XFA, 0XC8, 0XD9,0X31, 0X20, 0X12, 0X03, 0X77, 0X66, 0X54, 0X45,0XBD, 0XAC, 0X9E, 0X8F, 0XFB, 0XEA, 0XD8, 0XC9,0X42, 0X53, 0X61, 0X70, 0X04, 0X15, 0X27, 0X36,0XCE, 0XDF, 0XED, 0XFC, 0X88, 0X99, 0XAB, 0XBA,0X52, 0X43, 0X71, 0X60, 0X14, 0X05, 0X37, 0X26,0XDE, 0XCF, 0XFD, 0XEC, 0X98, 0X89, 0XBB, 0XAA,0X63, 0X72, 0X40, 0X51, 0X25, 0X34, 0X06, 0X17,0XEF, 0XFE, 0XCC, 0XDD, 0XA9, 0XB8, 0X8A, 0X9B,0X73, 0X62, 0X50, 0X41, 0X35, 0X24, 0X16, 0X07,0XFF, 0XEE, 0XDC, 0XCD, 0XB9, 0XA8, 0X9A, 0X8B,0X84, 0X95, 0XA7, 0XB6, 0XC2, 0XD3, 0XE1, 0XF0,0X08, 0X19, 0X2B, 0X3A, 0X4E, 0X5F, 0X6D, 0X7C,0X94, 0X85, 0XB7, 0XA6, 0XD2, 0XC3, 0XF1, 0XE0,0X18, 0X09, 0X3B, 0X2A, 0X5E, 0X4F, 0X7D, 0X6C,0XA5, 0XB4, 0X86, 0X97, 0XE3, 0XF2, 0XC0, 0XD1,0X29, 0X38, 0X0A, 0X1B, 0X6F, 0X7E, 0X4C, 0X5D,0XB5, 0XA4, 0X96, 0X87, 0XF3, 0XE2, 0XD0, 0XC1,0X39, 0X28, 0X1A, 0X0B, 0X7F, 0X6E, 0X5C, 0X4D,0XC6, 0XD7, 0XE5, 0XF4, 0X80, 0X91, 0XA3, 0XB2,0X4A, 0X5B, 0X69, 0X78, 0X0C, 0X1D, 0X2F, 0X3E,0XD6, 0XC7, 0XF5, 0XE4, 0X90, 0X81, 0XB3, 0XA2,0X5A, 0X4B, 0X79, 0X68, 0X1C, 0X0D, 0X3F, 0X2E,0XE7, 0XF6, 0XC4, 0XD5, 0XA1, 0XB0, 0X82, 0X93,0X6B, 0X7A, 0X48, 0X59, 0X2D, 0X3C, 0X0E, 0X1F,0XF7, 0XE6, 0XD4, 0XC5, 0XB1, 0XA0, 0X92, 0X83,0X7B, 0X6A, 0X58, 0X49, 0X3D, 0X2C, 0X1E, 0X0F
};

三、程序内容

3.1、定义内容

typedef enum
{CRC16_IBM,CRC16_MAXIM,CRC16_USB,CRC16_MODBUS,CRC16_CCITT,CRC16_CCITT_FALSE,CRC16_X25,CRC16_XMODEM,
}
CRC16Name_TypeDef;              //CRC16模型名称typedef enum
{CRC16Poly_8005,             //多项式8005CRC16Poly_1021,             //多项式1021
}
CRC16Poly_TypeDef;              //CRC多项式typedef enum
{CRC16Result_NULL,          //结果不进行计算CRC16Result_XOR,           //结果异或
}
CRC16Result_TypeDef;            //CRC16结果是否异或typedef enum
{REF_TRUE,                   //反转REF_FALSE,                  //不反转
}
RefInOrOut_TypeDef;             //REFIN或REFOUT

3.2、计算REFIN函数

/** 功能：计算输入反转值* 输入： @data计算字节的内容* 输出： 反转值*/
uint8_t RefinCount(uint8_t data)
{uint8_t i, data_buffer;for(i = 0;i < 8;i ++){data_buffer <<= 1;if((data & 0x01) == 0x01){data_buffer |= 0x01;}data >>= 1;}return data_buffer;
}

3.3、计算REFOUT函数

/** 功能：计算输出反转值* 输入： @data计算字节的内容* 输出： 反转值*/
uint16_t RefoutCount(uint16_t data)
{uint8_t i;uint16_t data_buffer;for(i = 0;i < 16;i ++){data_buffer <<= 1;if((data & 0x01) == 0x01){data_buffer |= 0x01;}data >>= 1;}return data_buffer;
}

3.4、CRC16校验函数

/** 功能：完成CRC校验* 输入： @crc16_name：CRC16模型名称*         @crc_long：参与校验的字节长度*        @p_crc_data：校验数据首指针地址* 输出： 校验结果*/
uint16_t CRC16(CRC16Name_TypeDef crc16_name,uint8_t crc_long, uint8_t* p_crc_data)
{uint8_t i,count_buffer;CRC16Poly_TypeDef poly;         //多项式uint8_t init_value_h;          //初始值高字节uint8_t init_value_l;           //初始值低字节CRC16Result_TypeDef result_type;//结果计算类型RefInOrOut_TypeDef refin,refout;//输入数据反转，输出数据反转uint16_t crc_buffer = 0x00;      //CRC缓存switch(crc16_name){case CRC16_IBM:poly = CRC16Poly_8005;init_value_h = 0x00;init_value_l = 0x00;result_type = CRC16Result_NULL;refin = REF_TRUE;refout = REF_TRUE;break;case CRC16_MAXIM:poly = CRC16Poly_8005;init_value_h = 0x00;init_value_l = 0x00;result_type = CRC16Result_XOR;refin = REF_TRUE;refout = REF_TRUE;break;case CRC16_USB:poly = CRC16Poly_8005;init_value_h = 0xFF;init_value_l = 0xFF;result_type = CRC16Result_XOR;refin = REF_TRUE;refout = REF_TRUE;break;case CRC16_MODBUS:poly = CRC16Poly_8005;init_value_h = 0xFF;init_value_l = 0xFF;result_type = CRC16Result_NULL;refin = REF_TRUE;refout = REF_TRUE;break;case CRC16_CCITT:poly = CRC16Poly_1021;init_value_h = 0x00;init_value_l = 0x00;result_type = CRC16Result_NULL;refin = REF_TRUE;refout = REF_TRUE;break;case CRC16_CCITT_FALSE:poly = CRC16Poly_1021;init_value_h = 0xFF;init_value_l = 0xFF;result_type = CRC16Result_NULL;refin = REF_FALSE;refout = REF_FALSE;break;case CRC16_X25:poly = CRC16Poly_1021;init_value_h = 0xFF;init_value_l = 0xFF;result_type = CRC16Result_XOR;refin = REF_TRUE;refout = REF_TRUE;break;case CRC16_XMODEM:poly = CRC16Poly_1021;init_value_h = 0x00;init_value_l = 0x00;result_type = CRC16Result_NULL;refin = REF_FALSE;refout = REF_FALSE;break;}if(poly == CRC16Poly_8005){if(refin == REF_TRUE){for(i = 0;i < crc_long;i ++){count_buffer = init_value_l ^ *p_crc_data;init_value_l = init_value_h ^ CRC16_8005_DATASHEET_H[count_buffer];init_value_h = CRC16_8005_DATASHEET_L[count_buffer];p_crc_data ++;                                      //指针+1}}else{count_buffer = init_value_l ^ RefinCount(*p_crc_data);init_value_l = init_value_h ^ CRC16_8005_DATASHEET_H[count_buffer];init_value_h = CRC16_8005_DATASHEET_L[count_buffer];p_crc_data ++;                                      //指针+1}}else{if(refin == REF_TRUE){for(i = 0;i < crc_long;i ++){count_buffer = init_value_l ^ *p_crc_data;init_value_l = init_value_h ^ CRC16_1021_DATASHEET_H[count_buffer];init_value_h = CRC16_1021_DATASHEET_L[count_buffer];p_crc_data ++;                                      //指针+1}}else{for(i = 0;i < crc_long;i ++){count_buffer = init_value_l ^ RefinCount(*p_crc_data);init_value_l = init_value_h ^ CRC16_1021_DATASHEET_H[count_buffer];init_value_h = CRC16_1021_DATASHEET_L[count_buffer];p_crc_data ++;                                      //指针+1}}}crc_buffer = init_value_h;crc_buffer <<= 8;crc_buffer |= init_value_l;if(refout == REF_FALSE){crc_buffer = RefoutCount(crc_buffer);}if(result_type == CRC16Result_XOR){crc_buffer = ~crc_buffer & 0xFFFF;}return crc_buffer;                                //返回CRC值
}

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