cdatalink.h

由visual c++编写的北航一个的指纹识别系统

// cDataLink.h: interface for the cDataLink class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_CDATALINK_H__90C31080_073D_11D5_B2C7_000021001526__INCLUDED_)
#define AFX_CDATALINK_H__90C31080_073D_11D5_B2C7_000021001526__INCLUDED_

#include "comm_buf.h"	// Added by ClassView
#include "comm_buf_copy.h"	// Added by ClassView
#include "InfBuf.h"	// Added by ClassView

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

class CDataLink  
{
// PCB FORMAT CODE
#define I_BLOCK 	    0x02	//I-Block:     000x xx1x 
#define R_BLOCK_ACK 	0xA2	//R-Block-ACK: 1010 x01x
#define R_BLOCK_NAK 	0xB2	//R-Block-NAK: 1011 x01x
#define S_BLOCK_DES 	0xC2	//S-Block:     1100 x010
#define S_BLOCK_WTX 	0xF2	//S-Block:     1111 x010

// Bitmasks for decoding the several state
#define M_I_BLOCK 	    0xE2	//I-BLOCK:			1110 0010
#define M_R_BLOCK       0xF6	//R-BLOCK:			1111 0110               	
#define M_S_BLOCK       0xF7	//S-BLOCK:    			1111 0111
#define M_CHAINING      0x10	//Chaining:			0001 0000	
#define M_CID		    0x08	//CID following:		0000 1000
#define M_NAD		    0x04	//NAD following:		0000 0100
#define M_BLOCK_NUMBER	0x01	//BLOCKNUMBER:			0000 0001
#define M_CID_BYTE	    0xFF	//CID Byte:			1111 1111
#define M_POWER_LEVEL	0x00	//Power Level Indication:       0000 0000
#define M_WTXM		    0x3F	//Waiting Time eXtension Multipier 0011 1111

// These definitions are only for error handling
#define READY		    0
#define PICC_CHAINING 	1
#define PCD_CHAINING 	2
#define S_WTX_RESPONSE	3
#define PROTOCOL_ERROR	4
#define S_DESELECT_REQ  5

//Run States
#define RECEIVE_STATE 	   	0		// Receive State
#define APPLICATION_STATE  	1		// Application State
#define SEND_STATE 	   	2               // Send State

#define RECEIVE_WAIT 		3		// Wait State
#define RECEIVE_I 		    4       // I-Block received
#define RECEIVE_S_WTX_REQ  	5	  	// S-Block WTX response received
#define RECEIVE_R_ACK 		7		// R-Block ACKnowledge 
#define RECEIVE_S_DES_RES  	8	 	// S-Block DESelect REQuest

#define SEND_R_ACK          11	    // Send R(ACK)
#define SEND_S_DES_REQ      12      // Send S(Deselect)response
#define SEND_S_WTX_RES		13		// Send S-Block WTX request 
#define SEND_I 			    14	   	// Send I-Block 
#define SEND_RETRANSMIT    	10		// Retransmit the last sent block
#define SEND_R_NAK    	    15		// Send R(NAK) block


public:
	comm_buf_copy CBufferCopy;
	comm_buf CComBuf;
	int ImplementLinker(BYTE cid,BYTE prot_state,CInfBuf *CInfBuffer);
	CDataLink();
	virtual ~CDataLink();

private:

// Declaration of PICC or Application specific settings
BYTE power_level_indication; 	// 00: PICC does not support power level indication
						// e.g. 0x0C -> More than suffucient power for full functionality
BYTE nad;   			// e.g. 
BYTE wtxm;  			// e.g.

// Internal Variables Declaration
BYTE i; 				// Loop parameter only for I-Block -> Chaining PCD
BYTE j; 				// Loop parameter only for I-Block -> Chaining PICC
BYTE n; 				// Loop parameter
BYTE r; 				// Loop parameter
BYTE offset;      		// Counter to calculate the maximum space for INF Bytes
BYTE byte_cnt;			// Byte Counter only used for Chaining PICC
int  byte_nr; 
BYTE temp;
BYTE processing;               
BYTE fsdi;	       			// will be later corrected
//BYTE prot_state;
BYTE block_number;    		// Initializised to 1 (Rule A)
//BYTE add_cid;
//BYTE add_nad;

};

#endif // !defined(AFX_CDATALINK_H__90C31080_073D_11D5_B2C7_000021001526__INCLUDED_)