基于51单片机智能门锁代码输入密码时以*号代替,连续输错三次蜂鸣器响,LED灯闪 -

#include<reg52.h>
sbit AS=P2^2;
sbit LED=P1^0;
sbit Buzz=P1^1;
bit enBuzz=0;
bit enLED=0;
extern void LCDshowstr(unsigned char x,unsigned char y,unsigned char *str);
extern void E2read(unsigned char *buf,unsigned char addr,unsigned char len);
extern void E2write(unsigned char *buf,unsigned char addr,unsigned char len);
extern void keydriver();
extern void LCDwritedat(unsigned char dat);
extern void InitLCD1602();
extern void keyscan();
extern void LCDwritecmd(unsigned char cmd);
void configtimer0(unsigned char ms);
void keyaction(unsigned char keycode);
void oprtkey(unsigned char number);
unsigned char T0RH=0;
unsigned char T0RL=0;
unsigned char pw_num;
unsigned char PassWord_Length=6;
unsigned char result_flag=0;
unsigned char Tad[10];
unsigned char buf[6]={6,6,6,6,6,6};
unsigned char step;
unsigned char keynumbers;
unsigned char Error_Num=0;
bit Input_suc_flag=0;
bit fanhui=0;
bit List1=0;
bit keynumber=0;
bit key0=0;
bit key1=0;
bit key2=0;
bit key3=0;
bit key4=0;
bit key5=0;
bit key6=0;
bit key7=0;
bit key8=0;
bit key9=0;
bit start=0;
unsigned char baojing=0;
unsigned char step5=0;
void step_0();
void step_1();
void step_2();
void step_3();
void step_4();
void step_5();
void step5_0();
void step5_1();
void step5_2();
void step5_3();
void step5_4();
void step5_5();
void step_6();
void input_password(bit m);
void CipherComparison();
void delay(unsigned long i)
{
while(i--);
}
void main()
{
EA=1;
InitLCD1602();
E2write(buf,0x00,sizeof(buf));
//InitLCD1602();
configtimer0(1);
step=0;
while(1)
{ keydriver();
switch(step)
{
case 0:{step_0();
if(keynumber==0)
step=0;
else
{keynumber=0;
step=1; }
break;}
case 1:step_1();break;
case 2:step_2();break;
case 3:step_3();break;
case 4:step_4();break;
case 5:step_5();break;
case 6:step_6();break;
}
}
}
void step_0()
{
LCDshowstr(0,0,"Pechin Science");
LCDshowstr(1,1,"welcome");
}
void step_1()
{
LCDwritecmd(0x01);
LCDshowstr(0,0,"Unlock");
LCDshowstr(15,0,"<");
LCDshowstr(0,1,"ChangePassword");
step=2;
}
void step_2()
{
if(start==0)
{
if((key1==1) ||( key9==1)) //1键或9键按下
{
key1=0;
key9=0;
List1=~List1; //Change Password
if(List1==0)
{
LCDshowstr(15,0,"<"); // Unlock <
LCDshowstr(15,1," "); // Change Password
}
else
{
LCDshowstr(15,0," "); // Unlock
LCDshowstr(15,1,"<"); // Change Password <
}
}
}
else //确认键按下
{ start=0;
if(List1==0)
{step=3;}
else
{step=5;List1=0;}
}}
void step_3()
{
step=4;
pw_num=0;
InitLCD1602();
LCDshowstr(0,0,"Pass Word: ");
}
void step_4()
{
input_password(0);
if(Input_suc_flag==1){step=6;}
Input_suc_flag=0;
}
void step_5() //修改密码
{
switch(step5)
{
case 0: {step5_0();} break;
case 1: {step5_1();} break;
case 2: {step5_2();} break;
case 3: {step5_3();} break;
case 4: {step5_4();} break;
case 5: {step5_5();} break;
}
}
void step5_0()
{
LCDwritecmd(0x01);
LCDshowstr(0,0,"Input PassWord:");
step5=1;
pw_num=0;
}
void step5_1()
{
input_password(0);
if(Input_suc_flag==1)
{
step5=2;
Input_suc_flag=0;
}
}
void step5_2()
{
CipherComparison();
step5=3;
}
void step5_3()
{
if(result_flag==0)
{
if(Error_Num<=3)
{
Error_Num++;
InitLCD1602();
LCDshowstr(0,0,"Error 01");
delay(50000);
step5=0;
}
else
{
Error_Num=0;
step=0;
}
}
else
{
InitLCD1602();
LCDshowstr(0,0,"New PassWord:");
pw_num=0;
step5=4;
}
}
void step5_4()
{
input_password(1);
if(Input_suc_flag==1)
{
step5=5;
Input_suc_flag=0;
LCDwritecmd(0x01);
LCDshowstr(0,0,"OK!nice!");
delay(500000);
}
}
void step5_5()
{
unsigned char x;
PassWord_Length=pw_num;
for(x=0;x<pw_num;x++)
{
buf[x]=Tad[x];
}
E2write(buf,0x00,PassWord_Length);
step5=0;
step=0;
}
void step_6()
{
static unsigned char k=1; //错误次数
static unsigned char n=30;
unsigned char numberbuf[2];
CipherComparison();
if(result_flag==1) //密码正确
{ k=0;
InitLCD1602();
LCDshowstr(0,0," WELCOME!");
AS=0; //开继电器
delay(60000);
delay(60000);
AS=1; //关继电器
}
else //密码错误
{
if(k<3)
{ k++;
InitLCD1602(); //
LCDshowstr(0,0,"Error 01!"); //
delay(100000);
}
else
{
while(n>0)
{
InitLCD1602();
numberbuf[0]=(n/10)+0x30;
numberbuf[1]=(n%10)+0x30;
LCDshowstr(12,1,numberbuf);
enBuzz=1; //
enLED=1;
if(baojing==1)
{
baojing=0;
n--;
}}
n=30;
enLED=0;
enBuzz=0;
/* enBuzz=1; //
enLED=1; //
delay(600000); //
enLED=0; //
enBuzz=0; */
} //
}
step=0;
}
void input_password(bit m)
{
unsigned char j;
if(start==0) //ok键没有按下
{
if((key0==1)||(key1==1)||(key2==1)||(key3==1)||(key4==1)||(key5==1)||(key6==1)||(key7==1)||(key8==1)||(key9==1)) //1-9按下
{
key0=0,key1=0,key2=0,key3=0,key4=0,key5=0,key6=0,key7=0,key8=0,key9=0;
Tad[pw_num]=keynumbers;
pw_num++;
LCDwritecmd(0xc0);
for(j=0;j<pw_num;j++)
{
if(m==0)
{LCDwritedat('*'); } //密码隐藏
else
{LCDwritedat(Tad[j]+0x30);} //显示密码
}}
if(fanhui!=0) //返回键按下
{
fanhui=0;
if(pw_num!=0)
{pw_num--;}
else
{step=0;}
// ShowString (0x00,"Pass Word：");
LCDwritecmd(0x01);
LCDshowstr(0,0,"Pass Word: ");
LCDwritecmd(0xc0);
for(j=0;j<pw_num;j++)
{
if(m==0) {LCDwritedat('*'); } //密码隐藏
else {LCDshowstr(0,1,Tad);} //显示密码
}
//LCDwritedat(' ');
}
}
else //ok键按下
{
start=0;
if(pw_num==0)
{
step=0;
LCDwritecmd(0x01);
LCDshowstr(0,0,"Error 02!");
delay(600000);
}
else{
Input_suc_flag=1;
}
//AS=0;
}
}
void keyaction(unsigned char keycode)
{
if((keycode>=0x30)&&(keycode<=0x39))
{
keynumbers=keycode-0x30;
}
}
void oprtkey(unsigned char number)
{
if(number==1)
keynumber=1;
else if(number==2)
key1=1;
else if(number==3)
key9=1;
else if(number==4)
start=1;
else if(number==5)
key2=1;
else if(number==6)
key3=1;
else if(number==7)
key4=1;
else if(number==8)
key5=1;
else if(number==9)
key6=1;
else if(number==10)
key7=1;
else if(number==11)
key8=1;
else if(number==12)
key0=1;
else if(number==13)
fanhui=1;
}
void CipherComparison()
{
unsigned char i=0,j=0;
if(PassWord_Length==pw_num) //密码长度比对
{
for(i=0;i<PassWord_Length;i++) //密码比对
{
if(buf[i]!=Tad[i])
{
result_flag=0;break; //密码错误
}
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