#include?“crc.h“

//計算機存儲最小單位是字節存儲順序（小端模式）為低位字節在前高位在后
#define?MSB_MODE??1?//大端模式
#define?LSB_MODE??0

static?void?_InvertU8（uint8_t?*dBuf?uint8_t?*srcBuf）;
static?void?_InvertU16（uint16_t?*dBuf?uint16_t?*srcBuf）;
static?void?_InvertU32（uint32_t?*dBuf?uint32_t?*srcBuf）;

typedef?bool?（*pFunc）（）;

typedef?struct{
????uint16_t??initVal;
????uint16_t??POLY;
????uint16_t??sub;
????uint8_t???bits;
????char	??*funcName;
}crc16_Table_TypeDef;
static?const?crc16_Table_TypeDef?CRC16_Table[]?=?{
????{0x0000?0x1021?0x0000?LSB_MODE?“CRC16_CCITT“}
????{0xFFFF?0x1021?0x0000?MSB_MODE?“CRC16_CCITT_FLASE“}
????{0x0000?0x1021?0x0000?MSB_MODE?“CRC16_XMODEM“}
????{0xFFFF?0x1021?0xFFFF?LSB_MODE?“CRC16_X25“}
????{0xFFFF?0x8005?0x0000?LSB_MODE?“CRC16_MODBUS“}
????{0x0000?0x8005?0x0000?LSB_MODE?“CRC16_IBM“}
????{0x0000?0x8005?0xFFFF?LSB_MODE?“CRC16_MAXIM“}
????{0xFFFF?0x8005?0xFFFF?LSB_MODE?“CRC16_USB“}
};

typedef?struct{
	uint8_t?initVal;
	uint8_t?POLY;
	uint8_t	sub;
	uint8_t?bits;
	char	*funcName;
}crc8_Table_TypeDef;
static?const?crc8_Table_TypeDef?CRC8_Table[]?=?{
	{0x00?0x07?0x00?MSB_MODE?“CRC8“}
	{0x00?0x07?0x55?MSB_MODE?“CRC8_ITU“}
	{0xFF?0x07?0x00?LSB_MODE?“CRC8_ROHC“}
	{0x00?0x31?0x00?LSB_MODE?“CRC8_MAXIM“}
};

typedef?struct{
	uint32_t?initVal;
	uint32_t?POLY;
	uint32_t?sub;
	uint8_t??bits;
	char?	?*funcName;
}crc32_Table_TypeDef;
static?const?crc32_Table_TypeDef?CRC32_Table[]={
	{0xFFFFFFFF?0x04C11DB7?0xFFFFFFFF?LSB_MODE?“CRC32“}
	{0xFFFFFFFF?0x04C11DB7?0x00000000?MSB_MODE?“CRC32_MPEG-2“}
};

uint16_t?calc_crc16（uint8_t?Mode?uint8_t?*pMsg?uint16_t?Len）{
//????printf（“?%d?\n“?sizeof（Table）/sizeof（funcTable_TypeDef））;
????if（Mode?>?sizeof（CRC16_Table）/sizeof（crc16_Table_TypeDef））
????????return?0;
	
	uint16_t?CRCin?=?CRC16_Table[Mode].initVal;
	uint8_t	?tmp?=?0;
	
	printf（“CRC_Mode:?%s\n“?CRC16_Table[Mode].funcName）;
	
????for（uint16_t?i=0;i		tmp?=?*（pMsg++）;
????????if（CRC16_Table[Mode].bits?==?LSB_MODE）{
			_InvertU8（&tmp?&tmp）;
		}
		CRCin?^=?（tmp?<		for（uint8_t?j=0;j<8;j++）{
			if（CRCin?&?0x8000）{
				CRCin?=?（CRCin?<			}else{
				CRCin?=?CRCin?<			}
		}
????}
	if（CRC16_Table[Mode].bits?==?LSB_MODE）{
		_InvertU16（&CRCin?&CRCin）;
	}
	return?（CRCin?^?CRC16_Table[Mode].sub）;
}

uint8_t?calc_crc8（uint8_t?Mode?uint8_t*pMsg?uint16_t?Len）{
	if（Mode?>?sizeof（CRC8_Table）/sizeof（crc8_Table_TypeDef））
????????return?0;
	
	uint8_t?CRCin?=?CRC8_Table[Mode].initVal;
	uint8_t?tmp?=?0;
	
	printf（“CRC_Mode:?%s\n“?CRC8_Table[Mode].funcName）;
	
	for（uint16_t?i=0;i		tmp?=?*（pMsg++）;
		if（CRC8_Table[Mode].bits?==?LSB_MODE）{
			_InvertU8（&tmp?&tmp）;
		}
		CRCin?^=?tmp;
		for（uint8_t?j=0;j<8;j++）{
			if（CRCin?&?0x80）{
				CRCin?=?（CRCin?<			}else{
				CRCin?<<=?1;
			}
		}
	}
	if（CRC8_Table[Mode].bi

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件?????????143??2019-03-15?16:24??readme.url
?????文件?????????357??2019-03-15?14:23??crc.h
?????文件????????4580??2019-03-15?15:04??crc.c