User`s manual

#define SMBHSTSTS 0x00 // SMBus Host Status Register Offset

#define SMBHSTSTS_BUSY 0x01 // SMBus Host -> 0000-0001 Busy

#define SMBHSTSTS_INTR 0x02 // SMBus Host -> 0000-0010 Interrupt / complection

#define SMBHSTSTS_ERROR 0x04 // SMBus Host -> 0000-0100 Error

#define SMBHSTSTS_COLLISION 0x08 // SMBus Host -> 0000-1000 Collistion

#define SMBHSTSTS_FAILED 0x10 // SMBus Host -> 0001-0000 Failed

//----------------------------------------------------------------------------------

#define SMBHSTCNT 0x02 // SMBus Host Contorl Register Offset

#define SMBHSTCNT_KILL 0x02 // SMBus Host Contorl -> 0000 0010 Kill

#define SMBHSTCNT_QUICK 0x00 // SMBus Host Contorl -> 0000 0000 quick (default)

#define SMBHSTCNT_SENDRECV 0x04 // SMBus Host Contorl -> 0000 0100 Byte

#define SMBHSTCNT_BYTE 0x08 // SMBus Host Contorl -> 0000 1000 Byte Data

#define SMBHSTCNT_WORD 0x0c // SMBus Host Contorl -> 0000 1100 Word Data

#define SMBHSTCNT_BLOCK 0x14 // SMBus Host Contorl -> 0001 0100 Block

#define SMBHSTCNT_START 0x40 // SMBus Host Contorl -> 0100 0000 Start

//----------------------------------------------------------------------------------

#define SMBHSTCMD 0x03 // SMBus Host Command Register Offset

#define SMBHSTADD 0x04 // SMBus Host Address Register Offset

#define SMBHSTDAT0 0x05 // SMBus Host Data0 Register Offset

#define SMBHSTDAT1 0x06 // SMBus Host Data1 Register Offset

#define SMBBLKDAT 0x07 // SMBus Host Block Data Register Offset

//----------------------------------------------------------------------------------

// SMBus Bus Status Code

//----------------------------------------------------------------------------------

#define SMBUS_OK 0x0 // SMBUS OK

#define SMBUS_BUSY 0x1 // SMBUS BUSY

#define SMBUS_INT 0x2 // SMBUS INTR

#define SMBUS_ERROR 0x4 // SMBUS ERROR

//----------------------------------------------------------------------------------

#define SMBUS_TIMEOUT 100

10. Define SMBus pin in SMBus.h