//包含头文件
#include <REG52>
#include<intrins>
//宏定义
#define LCM_Data P0 //将P0口定义为LCM_Data
#define uchar unsigned char
#define uint unsigned int
#define w 6 //定义密码位数
//1602的控制脚
sbit lcd1602_rs=P2^7;
sbit lcd1602_rw=P2^6;
sbit lcd1602_en=P2^5;
sbit Scl=P3^4; //24C02串行时钟
sbit Sda=P3^5; //24C02串行数据
sbit ALAM = P2^1; //报警
sbit KEY = P3^6; //开锁
bit operation=0; //操作标志位
bit pass=0; //密码正确标志
bit ReInputEn=0; //重置输入允许标志
bit s3_keydown=0; //3秒按键标志位
bit key_disable=0; //锁定键盘标志
bit flag_REC =0; //串口接受标志位
unsigned char buff[5]=0;
unsigned char countt0,second; //t0中断计数器,秒计数器
void Delay5Ms(void); //声明延时函数
unsigned char code a[]={0xFE,0xFD,0xFB,0xF7}; //控盘扫描控制表
//液晶显示数据数组
unsigned char code start_line[] = {"password: "};
unsigned char code name[] = { "===Coded Lock==="}; //显示名称
unsigned char code Correct[] = {" correct "}; //输入正确
unsigned char code Error[] = {" error "}; //输入错误
unsigned char code codepass[] = {" pass "};
unsigned char code LockOpen[] = {" open "}; //OPEN
unsigned char code SetNew[] = {"SetNewWordEnable"};
unsigned char code Input[] = {"input: "}; //INPUT
unsigned char code ResetOK[] = {"ResetPasswordOK "};
unsigned char code initword[] = {"Init password..."};
unsigned char code Er_try[] = {"error,try again!"};
unsigned char code again[] = {"input again "};
unsigned char InputData[16]; //输入密码暂存区
unsigned char CurrentPassword[16]={1,3,1,4,2,0}; //管理员密码（只可在程序中修改）
unsigned c
