如感兴趣,请指教!
1、设计一个简易电子密码锁。
2、用矩阵键盘组成0~9数字键、确认键、删除键;用8位共阳数码管组成显示电路提示信息。
3、输入密码,在数码管上显示,当6位密码输入完时按下确认键,对输入密码与设定密码
进行比对,若正确,则开锁,此处用LED发光二极管一秒作为提示,若密码不正确,则
发出“嘀嘀”声。
仿真原理图如下(proteus仿真工程文件可到本帖附件中下载)
单片机源程序如下:
- #include<reg52.h>
- typedef unsigned char u8;
- typedef unsigned int u16;
- u8 which,buff[6];
- u8 s_1,s_2,s_3,s_4,s_5,s_6;
- sbit DI=P3^6;
- sbit LED=P3^7;
- u8 code right[]={1,2,3,4,5,6};
- u8 code distab[]={
- 0xc0,0xF9,0xA4,0xB0,0x99,
- 0x92,0x82,0xF8,0x80,0x90,
- 0x88,0x83,0xC6,0xA1,0x86,
- 0x8E,0xFF,0x0C,0x89,0x7F,0xBF};
- void delayms(u8 xms)
- {
- u16 i,j;
- for(i=xms;i>0;i--)
- for(j=110;j>0;j--);
- }
- void di()
- {
- DI=0;
- delayms(500);
- DI=1;
- delayms(500);
- }
- u8 conn()
- {
- if((buff[0]==right[0])&&(buff[1]==right[1])&&(buff[2]==right[2])&&
- (buff[3]==right[3])&&(buff[4]==right[4])&&(buff[5]==right[5]))
- return 1;
- else return 0;
- }
- void display(u8 num)
- {
- if(which>0)
- switch(which)
- {
- case 1:if(num==21)which=0;s_1=num;if(num==20)which=0;buff[0]=s_1; break;
- case 2:if(num==21)which=1;s_2=num;if(num==20)which=1;buff[1]=s_2; break;
- case 3:if(num==21)which=2;s_3=num;if(num==20)which=2;buff[2]=s_3; break;
- case 4:if(num==21)which=3;s_4=num;if(num==20)which=3;buff[3]=s_4; break;
- case 5:if(num==21)which=4;s_5=num;if(num==20)which=4;buff[4]=s_5; break;
- case 6:if(num==21)which=5;s_6=num;if(num==20)which=5;buff[5]=s_6; break;
- case 7: which=6;
- if(num==21)
- {
- if(conn()==0)
- {
- di();di();di();
- LED=1;
- }
- else
- {
- LED=0;delayms(500);delayms(500);LED=1;
- }
- which=0;
- }
- break;
- default: which=6; break;
- }
- else di();
- }
- void dis()
- {
- switch(which)
- {
- case 1:P0=distab[s_1]; P2=0x80;delayms(5); P0=0xff; P2=0x00; break;
- case 2:P0=distab[s_1]; P2=0x40;delayms(5); P0=0xff;
- P0=distab[s_2]; P2=0x80;delayms(5); P0=0xff; P2=0x00; break;
- case 3:P0=distab[s_1]; P2=0x20;delayms(5); P0=0xff;
- P0=distab[s_2]; P2=0x40;delayms(5); P0=0xff;
- P0=distab[s_3]; P2=0x80;delayms(5); P0=0xff; P2=0x00; break;
- case 4:P0=distab[s_1]; P2=0x10;delayms(5); P0=0xff;
- P0=distab[s_2]; P2=0x20;delayms(5); P0=0xff;
- P0=distab[s_3]; P2=0x40;delayms(5); P0=0xff;
- P0=distab[s_4]; P2=0x80;delayms(5); P0=0xff; P2=0x00; break;
- case 5:P0=distab[s_1]; P2=0x08;delayms(5); P0=0xff;
- P0=distab[s_2]; P2=0x10;delayms(5); P0=0xff;
- P0=distab[s_3]; P2=0x20;delayms(5); P0=0xff;
- P0=distab[s_4]; P2=0x40;delayms(5); P0=0xff;
- P0=distab[s_5]; P2=0x80;delayms(5); P0=0xff; P2=0x00; break;
- case 6:P0=distab[s_1]; P2=0x04;delayms(5); P0=0xff;
- P0=distab[s_2]; P2=0x08;delayms(5); P0=0xff;
- P0=distab[s_3]; P2=0x10;delayms(5); P0=0xff;
- P0=distab[s_4]; P2=0x20;delayms(5); P0=0xff;
- P0=distab[s_5]; P2=0x40;delayms(5); P0=0xff;
- P0=distab[s_6]; P2=0x80;delayms(5); P0=0xff; P2=0x00; break;
- }
- }
- void matrixkeyscan() //matrix矩阵
- {
- u8 temp,key; //temp临时变量
- P1=0xfe; //将第一行电平置低,其余行全为高
- temp=P1; //读取P3口当前状态的置赋予临时变量temp,用于后面计算
- temp=temp&0xf0; //判断temp的高四位是否有0,如果temp的高四位有0,那么与运算后
- //结果必然不等于0xf0;temp的高四位实际上是矩阵键盘的4个列线
- //从而通过temp与0xf0"&"运算后的结果是否为0xf0来判断第一行是否
- //有按键按下
- if(temp!=0xf0) //“temp&0xf0”的结果,如果temp不等于0xf0,说明有键被按下
- {
- delayms(10);
- temp=P1; //重新读一次P3口数据
- temp=temp&0xf0; //重新进行一次与运算
- if(temp!=0xf0)
- {
- temp=P1;
- switch(temp)
- {
- case 0xee: key=0; which+=1; break;
- case 0xde: key=1; which+=1; break;
- case 0xbe: key=2; which+=1; break;
- case 0x7e: key=3; which+=1; break;
- }
- while(temp!=0xf0) //等待按键释放
- {
- temp=P1;
- temp=temp&0xf0;
- }
- display(key);
- }
- }
- P1=0xfd;
- temp=P1;
- temp=temp&0xf0;
- if(temp!=0xf0)
- {
- delayms(10);
- temp=P1;
- temp=temp&0xf0;
- if(temp!=0xf0)
- {
- temp=P1;
- switch(temp)
- {
- case 0xed: key=4; which+=1;break;
- case 0xdd: key=5; which+=1;break;
- case 0xbd: key=6; which+=1;break;
- case 0x7d: key=7; which+=1;break;
- }
- while(temp!=0xf0)
- {
- temp=P1;
- temp=temp&0xf0;
- }
- display(key);
- }
- }
- P1=0xfb;
- temp=P1;
- temp=temp&0xf0;
- if(temp!=0xf0)
- {
- delayms(10);
- temp=P1;
- temp=temp&0xf0;
- if(temp!=0xf0)
- {
- temp=P1;
- switch(temp)
- {
- case 0xeb: key=8; which+=1;break;
- case 0xdb: key=9; which+=1;break;
- // case 0xbb: key=10; which+=1;break;
- // case 0x7b: key=11; which+=1;break;
- }
- while(temp!=0xf0)
- {
- temp=P1;
- temp=temp&0xf0;
- }
- display(key);
- }
- }
- P1=0xf7;
- temp=P1;
- temp=temp&0xf0;
- if(temp!=0xf0)
- {
- delayms(10);
- temp=P1;
- temp=temp&0xf0;
- if(temp!=0xf0)
- {
- temp=P1;
- switch(temp)
- {
- case 0xe7: key=20; break;
- case 0xd7: key=21; which+=1; break;
- // case 0xb7: key=14; which+=1;break;
- // case 0x77: key=15; which+=1;break;
- ……………………
- …………限于本文篇幅 余下代码请从51黑下载附件…………
复制代码
所有资料51hei提供下载:
mimasuo.rar
(210.87 KB, 下载次数: 186)
|