基于普中51A2單片機開發(fā)板的電子鎖程序

ID:952422 · 發(fā)表于 2021-7-20 10:03

利用矩陣按鍵蜂鳴器數(shù)碼管定時器制作的一款電子鎖
輸入密碼時顯示為8.
密碼正確顯示-------------
密碼錯誤顯示ERROR
每次正確和錯誤蜂鳴器都會有不同的響聲
錯誤達到三次鍵盤會被鎖定20秒
在鎖定中如果還有按鍵按下則鎖定時間重置

源代碼如下：

#include <reg52.h>
#include <stdlib.h>
#define GPIO_KEY P1
#define num 8 //密碼位數(shù)
sbit bee=P1^5;
sbit LSA=P2^2;
sbit LSB=P2^3;
sbit LSC=P2^4;
unsigned int answer[8]={1,2,3,4,5,6,7,8}; //已設(shè)置密碼
unsigned int int_answer[8]={0,0,0,0,0,0,0,0}; //鍵盤輸入的密碼
int key=-1; //鍵值
unsigned int error_times=0; //已錯誤次數(shù)
unsigned char key_flag=0,a_flag=-1;
unsigned int wei[8]={0};
unsigned int T0Count=0;
int *as;
bit timer_flag=0;
bit stop_flag=0;
unsigned int code smgduan[]={0x00,0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x40};
/*0x3f , 0x06 , 0x5b , 0x4f , 0x66 , 0x6d
0 1 2 3 4 5
0x7d , 0x07 , 0x7f , 0x6f , 0x77 , 0x7c
6 7 8 9 A B
0x39 , 0x5e , 0x79 , 0x71 , 0x00
C D E F NULL
*/
void Timer0Init(void) //10毫秒@11.0592MHz
{
TMOD &= 0xF0; //設(shè)置定時器模式
TMOD |= 0x01; //設(shè)置定時器模式
TL0 = 0x00; //設(shè)置定時初值
TH0 = 0xDC; //設(shè)置定時初值
TF0 = 0; //清除TF0標志
TR0 = 1; //定時器0開始計時
ET0=1;
EA=1;
}
void delay(unsigned int a)
{
while(a--);
}
int keyDown()
{
unsigned int a=0;
GPIO_KEY=0x0f;
if(GPIO_KEY!=0x0f)
{
delay(1000);
if(GPIO_KEY!=0x0f)
{
GPIO_KEY=0x0f;
switch(GPIO_KEY)
{
case 0x07:key=0;break;
case 0x0b:key=1;break;
case 0x0d:key=2;break;
case 0x0e:key=3;break;
}
GPIO_KEY=0xf0;
switch(GPIO_KEY)
{
case 0x70:key=key;break;
case 0xb0:key=key+4;break;
case 0xd0:key=key+8;break;
case 0xe0:key=key+12;break;
}
while((a<50)&&(GPIO_KEY!=0xf0))
{
delay(1000);
a++;
}
key_flag=1;
}
}
return key;
}
void display() //數(shù)碼管顯示
{
LSA=0;LSB=0;LSC=0;P0=smgduan[wei[7]];delay(10);P0=0x00;
LSA=1;LSB=0;LSC=0;P0=smgduan[wei[6]];delay(10);P0=0x00;
LSA=0;LSB=1;LSC=0;P0=smgduan[wei[5]];delay(10);P0=0x00;
LSA=1;LSB=1;LSC=0;P0=smgduan[wei[4]];delay(10);P0=0x00;
LSA=0;LSB=0;LSC=1;P0=smgduan[wei[3]];delay(10);P0=0x00;
LSA=1;LSB=0;LSC=1;P0=smgduan[wei[2]];delay(10);P0=0x00;
LSA=0;LSB=1;LSC=1;P0=smgduan[wei[1]];delay(10);P0=0x00;
LSA=1;LSB=1;LSC=1;P0=smgduan[wei[0]];delay(10);P0=0x00;
}
void display_no()
{
wei[0]=15;
wei[1]=11;
wei[2]=11;
wei[3]=1;
wei[4]=11;
wei[5]=0;
wei[6]=0;
wei[7]=0;
display();
}
void display_yes()
{
int i;
for(i=0;i<8;i++)
{
wei[i]=17;
}
display();
}
/*void display_ans()
{
wei[7]=int_answer[0];
wei[6]=int_answer[1];
wei[5]=int_answer[2];
wei[4]=int_answer[3];
wei[3]=int_answer[4];
wei[2]=int_answer[5];
wei[1]=int_answer[6];
wei[0]=int_answer[7];
display();
}*/
void beep(unsigned int mode)
{
int k=0;
if(mode==1) //錯誤提示音
{
do
{
bee=~bee;
delay(200);
k++;
}while(k<=1000);
k=0;
}
else if(mode==2) //正確提示音
{
do
{
bee=~bee;
delay(100);
k++;
}while(k<=1000);
k=0;
}
}
void stop() //暫停鍵盤三秒
{
stop_flag=1;
do
{
key=-1;
keyDown();
if(key!=-1)
T0Count=0;
wei[0]=10;
display();
}while(timer_flag==0);
}
/*void convert()
{
switch(key)
{
case 0:key_flag=0;break;
case 1:key=0;key_flag=1;break;
case 2:key_flag=0;break;
case 3:key_flag=0;break;
case 4:key=1;key_flag=1;break;
case 5:key=2;key_flag=1;break;
case 6:key=3;key_flag=1;break;
case 7:key_flag=0;break;
case 8:key=4;key_flag=1;break;
case 9:key=5;key_flag=1;break;
case 10:key=6;key_flag=1;break;
case 11:key=10;key_flag=0;break;
case 12:key=7;key_flag=1;break;
case 13:key=8;key_flag=1;break;
case 14:key=9;key_flag=1;break;
case 15:key_flag=0;break;
}
}*/
void no()
{
int j=0;
error_times++; //錯誤次數(shù)+1
display_no();
beep(1);
for(j=0;j<num;j++)
{
int_answer[j]=0;
}
}
void yes()
{
beep(2);
while(1)
{
display_yes();
keyDown();
if(key==3)
{
break;
}
}
}
void main()
{
Timer0Init();
while(1)
{
if(error_times<3)
{
unsigned int i;
i=0;
wei[0]=16;
do
{
key=-1;
if((int_answer[i]=keyDown())!=-1)
i++;
}while(key!=15);
if(key==15)
{
for(i=0;i<num;i++)
{
if(answer[i]!=int_answer[i])
{
a_flag=1;
break;
}
else
a_flag=0;
}
}
if(a_flag==1)
{
no();
}
else
{
yes();
}
}
else
{
stop();
error_times=0;
}
}
}
void Timer0_Routine() interrupt 1 //10ms溢出一次
{
TL0 = 0x00; //設(shè)置定時初值
TH0 = 0xDC;
T0Count++;
display();
if(stop_flag==1)
{
T0Count=0;
if(T0Count==2000)
{
T0Count=0;
timer_flag=1;
stop_flag=0;
}
}
}