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dengcy 2024-12-18 06:17:03 +00:00
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#include "crc_lib.h"
static uint8_t CRC_4_ITU(uint8_t *data, uint8_t len);
static uint8_t CRC_5_EPC(uint8_t *data, uint8_t len);
static uint8_t CRC_5_ITU(uint8_t *data, uint8_t len);
static uint8_t CRC_5_USB(uint8_t *data, uint8_t len);
static uint8_t CRC_6_ITU(uint8_t *data, uint8_t len);
static uint8_t CRC_7_MMC(uint8_t *data, uint8_t len);
static uint8_t CRC_8(uint8_t *data, uint8_t len);
static uint8_t CRC_8_ITU(uint8_t *data, uint8_t len);
static uint8_t CRCC_8_ROHC(uint8_t *data, uint8_t len);
static uint8_t CRC_8_MAXIM(uint8_t *data, uint8_t len);
static uint16_t CRC_16_IBM(uint8_t *data, uint8_t len);
static uint16_t CRC_16_MAXIM(uint8_t *data, uint8_t len);
static uint16_t CRC_16_USB(uint8_t *data, uint8_t len);
static uint16_t CRC_16_MODBUS(uint8_t *data, uint8_t len);
static uint16_t CRC_16_CCITT(uint8_t *data, uint8_t len);
static uint16_t CRC_16_CCITT_FALSE(uint8_t *data, uint8_t len);
static uint16_t CRC_16_X25(uint8_t *data, uint8_t len);
static uint16_t CRC_16_XMODEM(uint8_t *data, uint8_t len);
static uint16_t CRC_16_DNP(uint8_t *data, uint8_t len);
static uint32_t CRC_32(uint8_t *data, uint8_t len);
static uint32_t CRC_32_MPEG_2(uint8_t *data, uint8_t len);
FuncionTable crc_list = {
.CRC_4_ITU = CRC_4_ITU,
.CRC_5_EPC = CRC_5_EPC,
.CRC_5_ITU = CRC_5_ITU,
.CRC_5_USB = CRC_5_USB,
.CRC_6_ITU = CRC_6_ITU,
.CRC_7_MMC = CRC_7_MMC,
.CRC_8 = CRC_8,
.CRC_8_ITU = CRC_8_ITU,
.CRCC_8_ROHC = CRCC_8_ROHC,
.CRC_8_MAXIM = CRC_8_MAXIM,
.CRC_16_IBM = CRC_16_IBM,
.CRC_16_MAXIM = CRC_16_MAXIM,
.CRC_16_USB = CRC_16_USB,
.CRC_16_MODBUS = CRC_16_MODBUS,
.CRC_16_CCITT = CRC_16_CCITT,
.CRC_16_CCITT_FALSE = CRC_16_CCITT_FALSE,
.CRC_16_X25 = CRC_16_X25,
.CRC_16_XMODEM = CRC_16_XMODEM,
.CRC_16_DNP = CRC_16_DNP,
.CRC_32 = CRC_32,
.CRC_32_MPEG_2 = CRC_32_MPEG_2,
};
static uint8_t CRC_4_ITU(uint8_t *data, uint8_t len)
{
uint8_t i;
uint8_t crc = 0;
while(len--)
{
crc ^= *data++;
for (i = 0; i < 8; ++i)
{
if (crc & 1)
crc = (crc >> 1) ^ 0x0C;
else
crc = (crc >> 1);
}
}
return crc & 0x0F;
}
static uint8_t CRC_5_EPC(uint8_t *data, uint8_t len)
{
uint8_t i;
uint8_t crc = 0x48;
while(len--)
{
crc ^= *data++;
for ( i = 0; i < 8; i++ )
{
if ( crc & 0x80 )
crc = (crc << 1) ^ 0x48;
else
crc <<= 1;
}
}
return (crc >> 3) & 0x1F;
}
static uint8_t CRC_5_ITU(uint8_t *data, uint8_t len)
{
uint8_t i;
uint8_t crc = 0;
while(len--)
{
crc ^= *data++;
for (i = 0; i < 8; ++i)
{
if (crc & 1)
crc = (crc >> 1) ^ 0x15;
else
crc = (crc >> 1);
}
}
return crc & 0x1F;
}
static uint8_t CRC_5_USB(uint8_t *data, uint8_t len)
{
uint8_t i;
uint8_t crc = 0x1F;
while(len--)
{
crc ^= *data++;
for (i = 0; i < 8; ++i)
{
if (crc & 1)
crc = (crc >> 1) ^ 0x14;
else
crc = (crc >> 1);
}
}
return crc ^ 0x1F;
}
static uint8_t CRC_6_ITU(uint8_t *data, uint8_t len)
{
uint8_t i;
uint8_t crc = 0;
while(len--)
{
crc ^= *data++;
for (i = 0; i < 8; ++i)
{
if (crc & 1)
crc = (crc >> 1) ^ 0x30;
else
crc = (crc >> 1);
}
}
return crc & 0x3F;
}
static uint8_t CRC_7_MMC(uint8_t *data, uint8_t len)
{
uint8_t i;
uint8_t crc = 0;
while(len--)
{
crc ^= *data++;
for ( i = 0; i < 8; i++ )
{
if ( crc & 0x80 )
crc = (crc << 1) ^ 0x12;
else
crc <<= 1;
}
}
return (crc >> 1) & 0x7F;
}
static uint8_t CRC_8(uint8_t *data, uint8_t len)
{
uint8_t i;
uint8_t crc = 0;
while(len--)
{
crc ^= *data++;
for ( i = 0; i < 8; i++ )
{
if ( crc & 0x80 )
crc = (crc << 1) ^ 0x07;
else
crc <<= 1;
}
}
return crc;
}
static uint8_t CRC_8_ITU(uint8_t *data, uint8_t len)
{
uint8_t i;
uint8_t crc = 0;
while(len--)
{
crc ^= *data++;
for ( i = 0; i < 8; i++ )
{
if ( crc & 0x80 )
crc = (crc << 1) ^ 0x07;
else
crc <<= 1;
}
}
return crc ^ 0x55;
}
static uint8_t CRCC_8_ROHC(uint8_t *data, uint8_t len)
{
uint8_t i;
uint8_t crc = 0xFF;
while(len--)
{
crc ^= *data++;
for (i = 0; i < 8; ++i)
{
if (crc & 1)
crc = (crc >> 1) ^ 0xE0;
else
crc = (crc >> 1);
}
}
return crc;
}
static uint8_t CRC_8_MAXIM(uint8_t *data, uint8_t len)
{
uint8_t i;
uint8_t crc = 0;
while(len--)
{
crc ^= *data++;
for (i = 0; i < 8; i++)
{
if (crc & 1)
crc = (crc >> 1) ^ 0x8C;
else
crc >>= 1;
}
}
return crc;
}
static uint16_t CRC_16_IBM(uint8_t *data, uint8_t len)
{
uint8_t i;
uint16_t crc = 0;
while(len--)
{
crc ^= *data++;
for (i = 0; i < 8; ++i)
{
if (crc & 1)
crc = (crc >> 1) ^ 0xA001;
else
crc = (crc >> 1);
}
}
return crc;
}
static uint16_t CRC_16_MAXIM(uint8_t *data, uint8_t len)
{
uint8_t i;
uint16_t crc = 0;
while(len--)
{
crc ^= *data++;
for (i = 0; i < 8; ++i)
{
if (crc & 1)
crc = (crc >> 1) ^ 0xA001;
else
crc = (crc >> 1);
}
}
return ~crc;
}
static uint16_t CRC_16_USB(uint8_t *data, uint8_t len)
{
uint8_t i;
uint16_t crc = 0xffff;
while(len--)
{
crc ^= *data++;
for (i = 0; i < 8; ++i)
{
if (crc & 1)
crc = (crc >> 1) ^ 0xA001;
else
crc = (crc >> 1);
}
}
return ~crc;
}
static uint16_t CRC_16_MODBUS(uint8_t *data, uint8_t len)
{
uint16_t crc = 0xFFFF;
uint8_t i, j;
for (j=0; j < len; j++)
{
crc=crc ^* data++;
for (i = 0; i < 8; i++)
{
if((crc & 0x0001) > 0)
{
crc = crc >> 1;
crc = crc ^ 0xa001;
}else
{
crc = crc >> 1;
}
}
}
return crc;
}
static uint16_t CRC_16_CCITT(uint8_t *data, uint8_t len)
{
uint8_t i;
uint16_t crc = 0;
while(len--)
{
crc ^= *data++;
for (i = 0; i < 8; ++i)
{
if (crc & 1)
crc = (crc >> 1) ^ 0x8408;
else
crc = (crc >> 1);
}
}
return crc;
}
static uint16_t CRC_16_CCITT_FALSE(uint8_t *data, uint8_t len)
{
uint8_t i;
uint16_t crc = 0xffff;
while(len--)
{
crc ^= (uint16_t)(*data++) << 8;
for (i = 0; i < 8; ++i)
{
if ( crc & 0x8000 )
crc = (crc << 1) ^ 0x1021;
else
crc <<= 1;
}
}
return crc;
}
static uint16_t CRC_16_X25(uint8_t *data, uint8_t len)
{
uint8_t i;
uint16_t crc = 0xffff;
while(len--)
{
crc ^= *data++;
for (i = 0; i < 8; ++i)
{
if (crc & 1)
crc = (crc >> 1) ^ 0x8408;
else
crc = (crc >> 1);
}
}
return ~crc;
}
static uint16_t CRC_16_XMODEM(uint8_t *data, uint8_t len)
{
uint8_t i;
uint16_t crc = 0;
while(len--)
{
crc ^= (uint16_t)(*data++) << 8;
for (i = 0; i < 8; ++i)
{
if ( crc & 0x8000 )
crc = (crc << 1) ^ 0x1021;
else
crc <<= 1;
}
}
return crc;
}
static uint16_t CRC_16_DNP(uint8_t *data, uint8_t len)
{
uint8_t i;
uint16_t crc = 0;
while(len--)
{
crc ^= *data++;
for (i = 0; i < 8; ++i)
{
if (crc & 1)
crc = (crc >> 1) ^ 0xA6BC;
else
crc = (crc >> 1);
}
}
return ~crc;
}
static uint32_t CRC_32(uint8_t *data, uint8_t len)
{
uint8_t i;
uint32_t crc = 0xffffffff;
while(len--)
{
crc ^= *data++;
for (i = 0; i < 8; ++i)
{
if (crc & 1)
crc = (crc >> 1) ^ 0xEDB88320;
else
crc = (crc >> 1);
}
}
return ~crc;
}
static uint32_t CRC_32_MPEG_2(uint8_t *data, uint8_t len)
{
uint8_t i;
uint32_t crc = 0xffffffff;
while(len--)
{
crc ^= (uint32_t)(*data++) << 24;
for (i = 0; i < 8; ++i)
{
if ( crc & 0x80000000 )
crc = (crc << 1) ^ 0x04C11DB7;
else
crc <<= 1;
}
}
return crc;
}

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/*
*
* 使用示例：crc_list.CRC_4_ITU(data, len);
* data为数据数组，len为数据长度
*
*/
#ifndef __CRC_LIB_H__
#define __CRC_LIB_H__
#ifdef __cplusplus
extern "C" {
#endif
#include "stdint.h"
typedef struct {
uint8_t (*CRC_4_ITU)(uint8_t *data, uint8_t len);
uint8_t (*CRC_5_EPC)(uint8_t *data, uint8_t len);
uint8_t (*CRC_5_ITU)(uint8_t *data, uint8_t len);
uint8_t (*CRC_5_USB)(uint8_t *data, uint8_t len);
uint8_t (*CRC_6_ITU)(uint8_t *data, uint8_t len);
uint8_t (*CRC_7_MMC)(uint8_t *data, uint8_t len);
uint8_t (*CRC_8)(uint8_t *data, uint8_t len);
uint8_t (*CRC_8_ITU)(uint8_t *data, uint8_t len);
uint8_t (*CRCC_8_ROHC)(uint8_t *data, uint8_t len);
uint8_t (*CRC_8_MAXIM)(uint8_t *data, uint8_t len);
uint16_t (*CRC_16_IBM)(uint8_t *data, uint8_t len);
uint16_t (*CRC_16_MAXIM)(uint8_t *data, uint8_t len);
uint16_t (*CRC_16_USB)(uint8_t *data, uint8_t len);
uint16_t (*CRC_16_MODBUS)(uint8_t *data, uint8_t len);
uint16_t (*CRC_16_CCITT)(uint8_t *data, uint8_t len);
uint16_t (*CRC_16_CCITT_FALSE)(uint8_t *data, uint8_t len);
uint16_t (*CRC_16_X25)(uint8_t *data, uint8_t len);
uint16_t (*CRC_16_XMODEM)(uint8_t *data, uint8_t len);
uint16_t (*CRC_16_DNP)(uint8_t *data, uint8_t len);
uint32_t (*CRC_32)(uint8_t *data, uint8_t len);
uint32_t (*CRC_32_MPEG_2)(uint8_t *data, uint8_t len);
} FuncionTable;
extern FuncionTable crc_list;
#ifdef __cplusplus
}
#endif
#endif /* __CRC_LIB_H__ */