passkey.c

这是一个电子密码锁,有25个按键分为数字键和功能键 二层密码保护功能.可以进行密码的设置,密码存在EEPROM里.

#include<reg51.h>
#include<intrins.h>
#define uchar unsigned char
#define uint  unsigned int
sfr  p0=0x80;
sfr  p3=0xb0;
sfr  p1=0x90;
sbit EE_CLK=P1^1;
sbit EE_SDA=P1^2;
sbit P07=p0^7;
sbit P37=p3^7;
sbit P13=p1^3;
sbit P14=p1^4;
sbit P15=p1^5;
sbit P16=p1^6;
sbit P17=p1^7;		   
sbit P30=p3^0;		//密码成功显示LED驱动口
sbit P31=p3^1;		//密码失败显示LED驱动口
sbit P32=p3^2;
sbit P33=p3^3;
sbit P34=p3^4;
sbit P35=p3^5;
sbit p36=p3^6;
sbit TB=SCON^3;
unsigned char code dispdata[]={0x46,0x30,0x24,0x79,0x21,0x02,0x12,0x19,	  // 0--F的编码
                              0x06,0x10,0x00,0x78,0x0e,0x03,0x40,0x08}; 															 

unsigned char code psword[6]={0x79,0x24,0x30,0x19,0x12,0x02};  //第三层密码为："123456"；