/* IC卡加油機(jī)鍵盤通訊子模塊頭文件 */

#include "c:\comp51\reg52.h"
#include "c:\comp51\absacc.h"
#include <intrins.h>
typedef unsigned int uint;
typedef unsigned long ulong;
typedef unsigned char uchar;
typedef unsigned long nlong;

/* 外部地址分配 */
#define     DIRECTION	XBYTE[0xc013]	// 數(shù)據(jù)傳送方向控制寄存器，最低位控制方向，發(fā)送:1，接收:0
#define     SCL         XBYTE[0xc00B]
#define     SDA   P17
/* 全局?jǐn)?shù)據(jù)定義 */

sbit	com_sda=P3^2;			// 串口數(shù)據(jù)線
bit	is_send;			// 發(fā)送/接收標(biāo)志，1:發(fā)送，0:接收
bit	is_over;			// 接收結(jié)束標(biāo)志，1:結(jié)束
bit	is_err;				// 奇/偶校驗(yàn)錯(cuò)標(biāo)志，1：出錯(cuò)

unsigned char xdata	send_buf[256];	// 發(fā)送數(shù)據(jù)緩沖區(qū)
unsigned char xdata	rekk[256];	// 接收數(shù)據(jù)緩沖區(qū)
unsigned char data	com_cur;	// 指示當(dāng)前發(fā)送位（共13位，1起始+8數(shù)據(jù)+1校驗(yàn)+3停止），由0~12指示
unsigned char data	com_tem;	// 發(fā)送：D0~D7存放：1起始位+d0~d6；接收：數(shù)據(jù)緩沖
unsigned char data	com_tem1;	// 發(fā)送：D0~D4存放：d7+1校驗(yàn)位+3停止位；接收：數(shù)據(jù)指針
unsigned char data 	com_limit;	// 接收：數(shù)據(jù)指針最大偏移量
unsigned char xdata    ack;
extern unsigned char idata comm_status;
extern unsigned char xdata flash[200];
extern unsigned char xdata second,minutes,hour,week,day,month,year;


/* 子函數(shù)說明 */
void com_delay();
	/* 等待數(shù)據(jù)接收完畢（最大延時(shí)等待20ms） */
void send(unsigned char offset,unsigned char len);
	/* 發(fā)送數(shù)據(jù)
	   offset:數(shù)據(jù)緩沖指針偏移量，len:要發(fā)送的數(shù)據(jù)長度 */
unsigned char recv(unsigned char offset,unsigned char len);
	/* 讀取數(shù)據(jù)
	   offset:數(shù)據(jù)緩沖指針偏移量，len:要讀取的數(shù)據(jù)長度
	   返回值 0:成功 1:奇偶校驗(yàn)錯(cuò) 2:超時(shí) */

void dlu();
void Start_I2c();
void Stop_I2c();
void SendByte(unsigned char c);
unsigned char RcvByte();
unsigned char ISendStr(unsigned char sla,unsigned char suba,unsigned char no);
unsigned char IRcvStr(unsigned char sla,unsigned char suba,unsigned char no);
void Ack_I2c(bit a);
void settime();
void gettime();
unsigned int dw_zk(unsigned int qw);

void DES(unsigned char xdata Decrypt, unsigned char xdata *Key, unsigned char xdata *Data1, unsigned char xdata *Result );
void DES_setkey(unsigned char xdata sw,unsigned char xdata *pkey );
void DES_calcul(unsigned char xdata *in,unsigned char xdata *out);
void pack8(unsigned char xdata *packed,unsigned char xdata *binary);
void unpack8(unsigned char xdata *packed,unsigned char xdata *binary);
void T_DES(unsigned char xdata *KEY13,unsigned char xdata *KEY23,unsigned char xdata *source3, unsigned char xdata *target3);
unsigned char  xdata KS[16][48];