#ifdef GLOBAL_GLOBALS
#define GLOBAL_EXT
#else
#define GLOBAL_EXT extern 
#endif
GLOBAL_EXT xdata 	struct  Socket_Type TCP1024;
GLOBAL_EXT xdata 	union 	Ip_Address_Type My_Ip_Address ;     //本機IP地址
GLOBAL_EXT xdata 	union 	Ip_Address_Type Gateway_Ip_Address;	//網關IP地址
GLOBAL_EXT xdata 	union 	Ip_Address_Type Mask_Ip_Address;   	//子網掩碼
GLOBAL_EXT xdata 	union 	Ip_Address_Type Ping_Ip_Address;   	//保存PING命令的目的主機的物理地址
GLOBAL_EXT xdata 	union 	Netcard  RxdNetBuff;			//數據接收緩沖區
GLOBAL_EXT xdata 	union 	Netcard  TxdNetBuff;			//數據發送緩沖區
GLOBAL_EXT xdata 	union 	Netcard  Resend_Buff;
GLOBAL_EXT xdata 	union 	Ethernet_Address_Type Gateway_MAC; 	//網關的物理地址
GLOBAL_EXT xdata 	union 	Ethernet_Address_Type Ping_MAC;		//PING的物理地址
GLOBAL_EXT union 	u 	RemotePort;


GLOBAL_EXT bit 	BiSecond;			//兩秒時,該標志置1
GLOBAL_EXT bit 	Tcp_Timeout;		//TCP超時標志,定時器0中斷中將該標志置位
GLOBAL_EXT bit 	TcpConnected;
GLOBAL_EXT bit 	ComTxdBufempty;

GLOBAL_EXT uchar 	Msec;				//10毫秒
GLOBAL_EXT uchar 	Sec;				//秒鐘
GLOBAL_EXT uchar 	Min;				//分鐘
GLOBAL_EXT uchar 	Gateway_IP_TTL;
GLOBAL_EXT uchar 	Ping_IP_TTL;
GLOBAL_EXT uchar 	Ping_Count;       	//ping的次數,決定本地回顯次數
GLOBAL_EXT uchar 	Udp_Count;
GLOBAL_EXT uchar 	RtTime;			//重發時間
GLOBAL_EXT uchar   Tcp_Drop_Count;
GLOBAL_EXT uint 	FrameIndex;

GLOBAL_EXT uint 	ComTxdRead; 	//串口接收讀指針
GLOBAL_EXT uint 	ComRxdRead;   	//串口發送讀指針
GLOBAL_EXT uint 	ComRxdWrite;  	//串口接收寫指針
GLOBAL_EXT uint 	ComTxdWrite;  	//串口發送寫指針
GLOBAL_EXT xdata	uchar   ComRxdBuf[];  //串口的接收緩沖區
GLOBAL_EXT xdata	uchar   ComTxdBuf[];  //串口的發送緩沖區

GLOBAL_EXT uchar 	code 	HexTable[];
GLOBAL_EXT xdata 	uchar 	Command_Buf[COMMAND_BUFF_SIZE];//命令緩沖區
GLOBAL_EXT xdata   unsigned char IpStr[16];
GLOBAL_EXT xdata	unsigned char PortStr[5];

GLOBAL_EXT void initial_system();
GLOBAL_EXT bit  Rec_NewPacket();
GLOBAL_EXT unsigned char  VerifyIpHeadCrc();
GLOBAL_EXT unsigned char  VerifyTcpCrc();
GLOBAL_EXT uint  CreateIpHeadCrc();
GLOBAL_EXT uint  CreateIcmpCrc();//
GLOBAL_EXT unsigned char  VerifyUdpCrc();
GLOBAL_EXT uint CreateTcpCrc();
GLOBAL_EXT void Create_Ip_Frame(uint length,uint IPH,uint IPL,uchar NextProtocal);
GLOBAL_EXT union Ip_Address_Type *IP_Str2Hex(unsigned char *Str);    //IP字符串轉換到IP地址值
GLOBAL_EXT void Delay_MS(uint ms_number);
GLOBAL_EXT void IP_Hex2Str(union Ip_Address_Type ip)    ;
GLOBAL_EXT void Port_Hex2Str(unsigned int portnum);    //IP地址值轉換到IP字符串
GLOBAL_EXT void Send_Packet(union Netcard *TxdNetBuff,uint length);