單片機(jī)電子密碼鎖程序

ID:152930 · 發(fā)表于 2016-12-7 16:17

單片機(jī)電子密碼鎖

程序.rar (56.65 KB, 下載次數(shù): 10)

2016-12-7 16:16 上傳

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#include<reg52.h>
#include"lcd1602.h"
#include"4x4key.h"
#include"24c02.h"
#define uchar unsigned char
sbit Beep=P2^5; //蜂鳴器端口
sbit SUO=P2^6; //開(kāi)鎖端口
uchar Kflag=0; //記錄按鍵的次數(shù)
uchar Buffer[6]={0}; //用來(lái)讀出AT24C02中所存的數(shù)據(jù)（即所謂的密碼）
uchar ABuffer[6]={0}; //用來(lái)從鍵盤所輸入的鍵值
uchar ABCBuffer[6]={0}; //用來(lái)改密碼時(shí)候，存儲(chǔ)第一次新密碼的數(shù)組，好與第二次輸入的新密碼做比較
uchar keytmp; //用來(lái)讀取按下的鍵值
uchar j,m,n,counter,k,Sflag,Nflag; //程序中用到的變量
bit Aflag=0; //用來(lái)第一次輸入新密碼后按下確認(rèn)鍵后執(zhí)行所對(duì)應(yīng)的程序斷的標(biāo)記
bit Qflag=0; //用來(lái)第二次輸入新密碼后按下確認(rèn)鍵后執(zhí)行所對(duì)應(yīng)的程序斷的標(biāo)記
void beep() //蜂鳴器響一定時(shí)間函數(shù)
{
for (k=0;k<100;k++)
{
mDelay(100);
Beep=!Beep; //BEEP取反
}
Beep=1; //關(guān)閉蜂鳴器
mDelay(250); //延時(shí)250毫秒
}
void main()
{
SUO=1;
LCD_Initial();
LCD_Print(1,0,"Input SCode:");
while(1) //按鍵掃描循環(huán)
{
if(Key_Down()==1) // 如果有鍵按下
{ keytmp=Key_Code(); //獲取輸入的鍵值
if(keytmp>=0&&keytmp<=9)
{ while(Key_Down()==1) {;} //在按鍵釋放的時(shí)候(這句很關(guān)鍵。)
Kflag++;
switch(Kflag) //密碼顯示字符選擇語(yǔ)句
{
case 1: LCD_Print(5,1,"*"); ABuffer[0]=keytmp; break;
case 2: LCD_Print(5,1,"**"); ABuffer[1]=keytmp; break;
case 3: LCD_Print(5,1,"***"); ABuffer[2]=keytmp; break;
case 4: LCD_Print(5,1,"****"); ABuffer[3]=keytmp; break;
case 5: LCD_Print(5,1,"*****"); ABuffer[4]=keytmp; break;
case 6: LCD_Print(5,1,"******");ABuffer[5]=keytmp; break;
}
}
if(keytmp==14) //確認(rèn)鍵代碼
{
if(Nflag!=1&&Nflag!=2) //判斷密碼輸入是否正確復(fù)合語(yǔ)句和在
{ //改密碼是判斷輸入舊密碼是否正確
RdFromROM(Buffer,0,6); //讀取AT24C02中的密碼
for(j=0;j<6;j++)
{
mDelay(200);
if(Buffer[j]!=ABuffer[j]) {LCD_ClrScreen();LCD_Print(1,1," Input Error!");counter++;break;}
else if(j==5&&Sflag==0) {LCD_ClrScreen();LCD_Print(1,0," Welecome!"); LCD_Print(1,1,"Open Door!");SUO=0;counter=0;}
else if(j==5&&Sflag==1) { mDelay(100);LCD_ClrScreen();LCD_Print(1,0," Input NewSecret");Nflag=1;Kflag=0;Aflag=1;}
}
}
if(Kflag==6&&Aflag==1) //第一次輸入新密碼并存儲(chǔ)在一個(gè)數(shù)組中
{ //以便第二次輸入新密碼與前一次比較是否
for(m=0;m<6;m++) //兩次輸入的密碼正確
{
ABCBuffer[m]=ABuffer[m];
}
mDelay(100);LCD_ClrScreen();LCD_Print(1,0," Input ANewSecret");Kflag=0;Aflag=0;Qflag=1;Nflag=2;
}
if(Kflag==6&&Qflag==1) //第二次新密碼與第一次新密碼比較復(fù)合語(yǔ)句
{ //如果正確則把新密碼寫入到AT24C02中。
for(n=0;n<6;n++)
{ mDelay(200);
if(ABCBuffer[n]!=ABuffer[n]) {LCD_ClrScreen();LCD_Print(1,0," Input NError!");counter++;break;}
else if(n==5) {WrToROM(ABCBuffer,0,6);mDelay(100);LCD_ClrScreen();LCD_Print(1,0," NCode SetSuccess");Kflag=0;counter=0;Qflag=0;break;}
}
}
//如果密碼輸入不正確，就重新輸入，如果次數(shù)超過(guò)3次就報(bào)警（即蜂鳴器響）
if(counter==1){mDelay(2000);LCD_ClrScreen();if(Qflag==1)LCD_Print(1,0," Input ANewSecret");else LCD_Print(1,0," Input Again:");Kflag=0;}
if(counter==2){mDelay(2000);LCD_ClrScreen();if(Qflag==1)LCD_Print(1,0," Input ANewSecret");else LCD_Print(1,0," Input Again:");Kflag=0;}
if(counter==3){mDelay(2000);LCD_ClrScreen(); LCD_Print(1,0," Input Too");LCD_Print(2,1,"Many Times!");beep();}
}
if(keytmp==15) //重設(shè)密碼鍵代碼同時(shí)使相應(yīng)的標(biāo)記復(fù)位
{
LCD_ClrScreen();LCD_Initial();LCD_Print(1,0," Input OldSecret");Nflag=0;Kflag=0;Sflag=1;
}
if(keytmp==11) //清除前面字符鍵代碼
{ while(Key_Down()==1) {;} //在按鍵釋放的時(shí)候(這句很關(guān)鍵。)
Kflag--;
ABuffer[Kflag+1]=0;
switch(Kflag)
{
case 0: mDelay(100);LCD_ClrScreen();if(Nflag==1)LCD_Print(1,0," Input NewSecret");else if(Nflag==2)LCD_Print(1,0," Input ANewSecret");else if(Sflag==1)LCD_Print(1,0," Input OldSecret");else LCD_Print(1,0," Input SCode:"); break;
case 1: mDelay(100);LCD_ClrScreen();if(Nflag==1)LCD_Print(1,0," Input NewSecret");else if(Nflag==2)LCD_Print(1,0," Input ANewSecret");else if(Sflag==1)LCD_Print(1,0," Input OldSecret");else LCD_Print(1,0," Input SCode:"); LCD_Print(5,1,"*"); break;
case 2: mDelay(100);LCD_ClrScreen();if(Nflag==1)LCD_Print(1,0," Input NewSecret");else if(Nflag==2)LCD_Print(1,0," Input ANewSecret");else if(Sflag==1)LCD_Print(1,0," Input OldSecret");else LCD_Print(1,0," Input SCode:"); LCD_Print(5,1,"**"); break;
case 3: mDelay(100);LCD_ClrScreen();if(Nflag==1)LCD_Print(1,0," Input NewSecret");else if(Nflag==2)LCD_Print(1,0," Input ANewSecret");else if(Sflag==1)LCD_Print(1,0," Input OldSecret");else LCD_Print(1,0," Input SCode:"); LCD_Print(5,1,"***"); break;
case 4: mDelay(100);LCD_ClrScreen();if(Nflag==1)LCD_Print(1,0," Input NewSecret");else if(Nflag==2)LCD_Print(1,0," Input ANewSecret");else if(Sflag==1)LCD_Print(1,0," Input OldSecret");else LCD_Print(1,0," Input SCode:"); LCD_Print(5,1,"****"); break;
case 5: mDelay(100);LCD_ClrScreen();if(Nflag==1)LCD_Print(1,0," Input NewSecret");else if(Nflag==2)LCD_Print(1,0," Input ANewSecret");else if(Sflag==1)LCD_Print(1,0," Input OldSecret");else LCD_Print(1,0," Input SCode:"); LCD_Print(5,1,"*****"); break;
case 6: mDelay(100);LCD_ClrScreen();if(Nflag==1)LCD_Print(1,0," Input NewSecret");else if(Nflag==2)LCD_Print(1,0," Input ANewSecret");else if(Sflag==1)LCD_Print(1,0," Input OldSecret");else LCD_Print(1,0," Input SCode:"); LCD_Print(5,1,"******"); break;
}
}
/* if(keytmp==12) {} //可以新增加功能的鍵
if(keytmp==13) {}*/
//返回鍵代碼和全部標(biāo)記復(fù)位
if(keytmp==10) {SUO=1;Kflag=0;Sflag=0;Nflag=0;counter=0;Aflag=0;Qflag=0;mDelay(200);LCD_ClrScreen();LCD_Print(1,0," Input SCode:");} //返回鍵代碼
}
}
}

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