ppp.h

本人编写的无线电话程序,给予PIC18C801设计,包括了uCOS的移植以及菜单,自己设计的拼音注入法,完整地一级汉字库,希望对大家有所帮助

#define MAXTERMINATE 2
#define MAXCONFIGURE 10

#define PPP_TIMEOUT					0x7e		//PPP timeout timer ID

#define PPPINITFCS16    0xffff  /* Initial FCS value */
#define PPPGOODFCS16    0xf0b8  /* Good final FCS value */

#define BIT_ACCM	0x01
#define BIT_MRU		0x02
#define BIT_AP		0x04

#define ESC	0x7D
#define END	0x7E

#define PPP_BUFFER_SIZE	256


#define PPPTIMEROUT		500	//3 second

#define FS_START		0x01
#define FS_ESC			0x02
//Definations of phase of link
//#define DEAD			0
//#define ESTABLISH		1
//#define AUTHENTICATE	2
//#define NETWORK			3
//#define TERMINATE		4

//Definations of Code field
#define	REQ				1		//Configure_Req , IPCP_Req or PAP_Req
#define ACK				2		//Configure_Ack , IPCP_Ack or PAP_Ack
#define NAK				3		//Configure_Nak , IPCP_Nak or PAP_Nak
#define REJ				4		//Configure_Rej , IPCP_Rej or PAP_Rej
#define TERMINATE		5		//Terminate_Req
#define TERMINATE_ACK	6		//Terminate_Ack
#define CODE_REJ		7		//Code_Rej
#define PROT_REJ		8		//Protocol_Rej

//Definations of Protocol field in PPP packet
//for teh reason of PIC storage -- the low byte first
#define LCP			0xC021
#define PAP			0xC023
#define CHAP		0xC223
#define IPCP		0x8021
#define IP			0x0021
#define CCP			0x80fd



//Definations of LCP Option field
//Actually we only use the 1~3 option
#define LCP_MRU		1	//Maximum Receive Unit
#define LCP_ACCM	2	//Asynchronous Control Character Map
#define LCP_AP		3	//Authentication Protocol
#define LCP_QP		4	//Quality Protocol
#define LCP_MN		5	//Magic Number

#define LCP_PFC		7	//Protocol Field Compression
#define LCP_ACFC	8	//Address and Control Field Compression
#define LCP_FCSA	9	//FCS Alternatives

//Definations of IPCP Option field
#define IPCP_IPADD	3	//IP Address

/*****************************************The State defination****************************************/
//The state is a bit different to the RFC1661. The major one is, in the RFC, when the peer want to 
// terminate the link, the state of the link shall move to STOPPED. But in our application, when a 
// terminate request received, the link has to be terminated and at last goto INITAIL state. 
// Here the only difference between STOPPED and CLOSED is that the former one is triggered by the 
// peer while the other is triggered locally.

// The idle state, no connection available
#define INITIAL		0	

// Begin to establish the link, that is, the command to dial out has been sent to MODEM,
// but has not connectted yet. When the MODEM report the connection is available(UP),  
// send CONFIGURE_REQ. And the state move to REQ_SENT.
#define	STARTING	1

// Due to CLOSE command from upper layer, the link has been closed(an TERMINATE_ACK has
// been received). But the MODEM has not onhook. So, when the MODEM is onhook, goto 
// INITIAL state
#define CLOSED		2

// The peer want to terminate the link. and all the process has been exacuted, when MODEM 
// report Down event, goto INITIAL state
#define	STOPPED		3	

// Due to CLOSE command from upper layer, to terminate the link, the TERMINATE_REQ has been
// sent, but no TERMINATE_ACK received. When a TERMINATE_ACK received, goto CLOSED state
#define CLOSING		4

//The peer want to terminate the link. An terminate ack has been sent and timeout timer has
// been set. When the timer expire, send OnHook command to MODEM and goto STOPPED state
#define	STOPPING	5

//Enter this state after we have sent a CONFIGURE_REQ. 
#define	REQ_SENT	6

//Enter when a ACK from the peer is received
#define	ACK_RCVD	7

// As the response to CONFIGURE_REQ from peer, the CONFIGURE_ACK has been sent.
#define	ACK_SENT	8

// All the negotiation is passed and link is available for network layer PDU. That is, all LCP, 
// PAP and IPCP has successed.
#define	OPENED		9


typedef rom struct PPPFrame_Struct{
	INT16U Framing;
	INT8U  ProtocolH;
	INT8U  ProtocolL;
	//
	INT8U  Code;
	INT8U  Id;
	INT8U  LengthHigh;
	INT8U  Length;
	//
	INT8U  FirstOption;
	INT8U  FirstOptionLength;
	INT8U  Param;
	INT8U  Data;
} PPP_FRAME;


//////////////////////

typedef rom struct LCPOption_Struct{
	INT8U Option;
	INT8U Len;
	INT8U Data[10];		//define a very long data region, for we only use it to define pointers
}LCPOption;


void PPPInit (void);
INT8U rom *PPPMakeHeader(INT8U rom * pBuf, INT16U Protocol);
INT8U PPPSendPacket (INT8U rom *Buffer, INT16U len);