www.pudn.com > rs232_moni.rar > CheckSum.h

#ifndef __CHECKSUM_H 
#define __CHECKSUM_H 
 
class CCheckSum   
{ 
public: 
	WORD AddSum(BYTE* btData,int nLength); 
	BYTE CCITT_CRC_8(BYTE* btData,int nLength); 
	WORD ANSI_CRC_16(BYTE* btData,int nLength); 
	WORD CCITT_CRC_16(BYTE* btData,int nLength); 
	CCheckSum(); 
	virtual ~CCheckSum(); 
 
}; 
 
#endif