单片机密码锁程序怎么改才能完成这些功能? -

#include<reg52.h>
#include <intrins.h>
#define uint unsigned int
#define uchar unsigned char
void shuru();
sbit sda=P2^0; //IO口定义
sbit scl=P2^1;
sbit rs=P2^2;
sbit lcden=P2^3;
sbit led=P1^0;
bit flag;
uchar password[]={1,2,3,4,5,6};
uchar enter[]={0,0,0,0,0,0,0};
uchar str[]="0123456789";
uchar wei,key,temp;
uchar new1,new2,new3,new4,new5,new6;
bit allow,change,sure,wanbi,retry,close,reset;
char key_buf[] = {0xee, 0xde, 0xbe, 0x7e,0xed, 0xdd, 0xbd, 0x7d,//定义键值
0xeb, 0xdb, 0xbb, 0x7b};
uchar p,time,a;
void delay(uint x)
{
uint a,b;
for(a=x;a>0;a--)
for(b=10;b>0;b--);
}
/*****************************************************
LCD1602初始化
*****************************************************/
void write_com(uchar com) //些命令，RS=0
{
P0=com;
rs=0;
lcden=0;
delay(10);
lcden=1;
delay(10);
lcden=0;
}
void write_data(uchar dat) //写数据，RS=1
{
P0=dat;
rs=1;
lcden=0;
delay(10);
lcden=1;
delay(10);
lcden=0;
}
void lcdinit()
{
write_com(0x38); //00111000工作方式设置：16×2显示，5×7点阵，8位数据接口
write_com(0x0c);
write_com(0x06); //00000110输入方式设置：光标右移，字符不移
write_com(0x01); //清屏幕指令，将以前的显示内容清除
write_com(0x80);
}
/******************************************************
24c02初始化
*******************************************************/
void nop()
{
_nop_();
_nop_();
}
void init() //24c02初始化子程序
{
scl=1;
nop();
sda=1;
nop();
}
void start() //启动I2C总线
{
sda=1;
nop();
scl=1;
nop();
sda=0;
nop();
scl=0;
nop();
}
void stop() //停止I2C总线
{
sda=0;
nop();
scl=1;
nop();
sda=1;
nop();
}
void writebyte(unsigned char j) //写一个字节
{
unsigned char i,temp;
temp=j;
for (i=0;i<8;i++)
{
temp=temp<<1;
scl=0;
nop();
sda=CY; //temp左移时，移出的值放入了CY中
nop();
scl=1; //待sda线上的数据稳定后，将scl拉高
nop();
}
scl=0;
nop();
sda=1;
nop();
}
unsigned char readbyte() //读一个字节
{
unsigned char i,j,k=0;
scl=0; nop(); sda=1;
for (i=0;i<8;i++)
{
nop(); scl=1; nop();
if(sda==1)
j=1;
else
j=0;
k=(k<<1)|j;
scl=0;
}
nop();
return(k);
}
void clock() //I2C总线时钟
{
unsigned char i=0;
scl=1;
nop();
while((sda==1)&&(i<255))
i++;
scl=0;
nop();
}
unsigned char read24c02(unsigned char address)
{
unsigned char i;
start();
writebyte(0xa0);
clock();
writebyte(address);
clock();
start();
writebyte(0xa1);
clock();
i=readbyte();
stop();
delay(100);
return(i);
}
void write24c02(unsigned char address,unsigned char info)
{
start();
writebyte(0xa0);
clock();
writebyte(address);
clock();
writebyte(info);
clock();
stop();
delay(5000); //这个延时一定要足够长，否则会出错。因为24c02在从sda上取得数据后，还需要一定时间的烧录过程。
}
/*******************************************
矩阵键盘
********************************************/
void keyscan()
{
P3=0xff; //独立按键优先
temp=P3;
temp=temp&0xf0;
if(temp!=0xf0)
{
delay(10);
if(temp!=0xf0)
{
if(temp==0xe0) retry=1; //重试
if(temp==0xd0) close=1; //关锁
if(temp==0x70) reset=1; //清内存密码为000000
}
}
P3=0xfe;
temp=P3;
temp=temp&0xf0;
if(temp!=0xf0)
{
delay(10);
if(temp!=0xf0)
{
temp=P3;
switch(temp)
{
case 0xee:
key=0;
if(wei<6)
{
enter[wei]=key;
write_data('*');
}
wei++;
break;
case 0xde:
key=1;
if(wei<6)
{
enter[wei]=key;
write_data('*');
}
wei++;
break;
case 0xbe:
key=2;
if(wei<6)
{
enter[wei]=key;
write_data('*');
}
wei++;
break;
case 0x7e:
key=3;
if(wei<6)
{
enter[wei]=key;
write_data('*');
}
wei++;
break;
}
while(temp!=0xf0)
{
temp=P3;
temp=temp&0xf0;
}
}
}
P3=0xfd;
temp=P3;
temp=temp&0xf0;
if(temp!=0xf0)
{
delay(10);
if(temp!=0xf0)
{
temp=P3;
switch(temp)
{
case 0xed:
key=4;
if(wei<6)
{
enter[wei]=key;
write_data('*');
}
wei++;
break;
case 0xdd:
key=5;
if(wei<6)
{
enter[wei]=key;
write_data('*');
}
wei++;
break;
case 0xbd:
key=6;
if(wei<6)
{
enter[wei]=key;
write_data('*');
}
wei++;
break;
case 0x7d:
key=7;
if(wei<6)
{
enter[wei]=key;
write_data('*');
}
wei++;
break;
}
while(temp!=0xf0)
{
temp=P3;
temp=temp&0xf0;
}
}
}
P3=0xfb;
temp=P3;
temp=temp&0xf0;
if(temp!=0xf0)
{
delay(10);
if(temp!=0xf0)
{
temp=P3;
switch(temp)
{
case 0xeb:
key=8;
if(wei<6)
{
enter[wei]=key;
write_data('*');
}
wei++;
break;
case 0xdb:
key=9;
if(wei<6)
{
enter[wei]=key;
write_data('*');
}
wei++;
break;
case 0xbb:
change=1; //改密
wei=0;
break;
case 0x7b:
if(allow) //改后确认
sure=1;
break;
}
while(temp!=0xf0)
{
temp=P3;
temp=temp&0xf0;
}
}
}
/* P3=0xf7;
temp=P3;
temp=temp&0xf0;
if(temp!=0xf0)
{
delay(10);
if(temp!=0xf0)
{
temp=P3;
switch(temp)
{
case 0xe7:
retry=1;
break;
case 0xd7:
close=1;
break;
}
while(temp!=0xf0)
{
temp=P3;
temp=temp&0xf0;
beep=0;
}
beep=1;
}
} */
}
void compare()
{
if(wei==6)
{
if((enter[0]==password[0])&(enter[1]==password[1])&(enter[2]==password[2])&(enter[3]==password[3])&(enter[4]==password[4])&(enter[5]==password[5]))
allow=1;
}
}
void main()
{
uchar b,c,d;
init();
lcdinit();
/****************************
// write24c02(110,0x01);
// write24c02(111,0x02);//24c02的第110到115地址单元作为密码存储区
// write24c02(112,0x03);
// write24c02(113,0x04);
// write24c02(114,0x05);
// write24c02(115,0x06);
*****************************/
/*password[0]=read24c02(110);
password[1]=read24c02(111);
password[2]=read24c02(112);
password[3]=read24c02(113);
password[4]=read24c02(114);
password[5]=read24c02(115);*/
while(1)
{
keyscan();
compare();
if(allow)
{
P1=0x00;
write_com(0xc0);
write_data('O');
write_data('P');
write_data('E');
write_data('N');
delay(500);
}
if(change)
{
change=0;
if(allow)
{
allow=0;
write_com(0x01);
write_com(0xc0);
write_data('N');
write_data('E');
write_data('W');
write_com(0x80);
while(wei<6)
{
keyscan();
}
}
}
if(sure)
{
sure=0;allow=0; wei=0;
change=0;
for(b=0;b<6;b++)
{
password[b]=enter[b];
}
write24c02(110,enter[0]);
write24c02(111,enter[1]);
write24c02(112,enter[2]);
write24c02(113,enter[3]);
write24c02(114,enter[4]);
write24c02(115,enter[5]);
write_com(0x01);
}
if(close)
{
close=0;change=0;//所有变量均被清零。
wei=0;
allow=0;
P1=0xff;
write_com(0x01);
}
}
}

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