基于51单片机的8位电子密码锁

1、 课程设计基于51单片机的8位电子密码锁/*8位电子密码锁程序*/#include<reg52.h>#define uint unsigned int#define uchar unsigned charsbit fmq=P30;sbit led1=P31;sbit led2=P32;sbit scl=P34;sbit sda=P35;uchar code wela=0xf7,0xfb,0xfd,0xfe,0xef,0xdf,0xbf,0x7f;uchar code dula=0x24,0xbd,0xe0,0xa8,0x39,0x2a,0x22,0xbc,0x20,0x28,0x2

2、4,0xfb,0xee,0x31,0Xef;uchar temp;uchar *play;uchar screa_ok=0;uchar at24c028=0,0,0,0,0,0,0,0; /存储源密码uchar atdata8=11,11,11,11,11,11,11,11;/存储开锁密码uchar atdata18=12,12,12,12,12,12,12,12;/存储HHHHHHHHuchar atdata28=11,11,11,11,11,11,11,11;/存储修改密码uchar atdata38=14,14,14,14,14,14,14,14;/存储换密码时输入的密码void at2

3、4c02_init();void start();void stop(); void respons0(); /应答void respons1() ;void write_add(uchar address,uchar date);uchar read_add(uchar address);void read_data(void);void write_data(void);uchar keyscan();void display();void keyprocess();void delay() ;void delayms(uint z)uint x,y;for(x=z;x>0;x-)f

4、or(y=110;y>0;y-);void main()/at24c02_init(); play=atdata2; read_data(); /write_data();while(1)display();keyprocess(); void display() uchar j; for(j=0;j<=7;j+) P1=0Xff;P0=dulaplayj; P1=welaj;P1=0Xff; uchar keyscan()uchar num=0xff;P2=0xfe;temp=P2;temp=temp&0xf0;while(temp!=0xf0)delayms(5);te

5、mp=P2;temp=temp&0xf0;while(temp!=0xf0)temp=P2;switch(temp)case 0xee:num=1;break;case 0xde:num=2;break;case 0xbe:num=3;break;case 0x7e:num=4;break;while(temp!=0xf0)temp=P2;temp=temp&0xf0;P2=0xfd;temp=P2;temp=temp&0xf0;while(temp!=0xf0)delayms(5);temp=P2;temp=temp&0xf0;while(temp!=0xf0

6、)temp=P2;switch(temp)case 0xed:num=5;break;case 0xdd:num=6;break;case 0xbd:num=7;break;case 0x7d:num=8;break;while(temp!=0xf0)temp=P2;temp=temp&0xf0;P2=0xfb;temp=P2;temp=temp&0xf0;while(temp!=0xf0)delayms(5);temp=P2;temp=temp&0xf0;while(temp!=0xf0)temp=P2;switch(temp)case 0xeb:num=9;brea

7、k;case 0xdb:num=0;break;case 0xbb:num=11;break;case 0x7b:num=12;break;while(temp!=0xf0)temp=P2;temp=temp&0xf0;P2=0xf7;temp=P2;temp=temp&0xf0;while(temp!=0xf0)delayms(5);temp=P2;temp=temp&0xf0;while(temp!=0xf0)temp=P2;switch(temp)case 0xe7:num=13;break;case 0xd7:num=14;break;case 0xb7:num

8、=15;break;case 0x77:num=16;break;while(temp!=0xf0)temp=P2;temp=temp&0xf0;return num;void keyprocess()uchar keydata=0;uchar i,error=0;static unsigned char flag=0;static unsigned char num=0;keydata=keyscan(); if(keydata=0xff) return; switch(keydata)case 1: case 2:case 3:case 4:case 5:case 6:case 7

9、:case 8:case 9:case 0: if(flag=1) if(num<8) atdata3num=13;atdatanum=keydata;num+; elseif(flag=2)if(num<8) atdata1num=keydata;num+; else if(num<8) atdata2num=13;atdatanum=keydata;num+; break;case 11: if(flag=0&&num=8)num=0; for(i=0;i<8;i+) if(atdatai=at24c02i) ; else error=1; if(e

10、rror=0)led1=0;delayms(1000);led1=1;elseled2=0;fmq=0;delayms(500);led2=1;fmq=1;delayms(500);led2=0;fmq=0;delayms(500);led2=1;fmq=1;delayms(500);led2=0;fmq=0;delayms(500);led2=1;fmq=1; error=0; for(i=0;i<8;i+) atdatai=11; atdata2i=11; else if(flag=1&&num=8) num=0;for(i=0;i<8;i+) if(atdat

11、ai=at24c02i) ;else error=1; if(error=0) flag=2; play=atdata1; else led2=0;fmq=0;delayms(500);led2=1;fmq=1;delayms(500);led2=0;fmq=0;delayms(500);led2=1;fmq=1;delayms(500);led2=0;fmq=0;delayms(500);led2=1;fmq=1; error=0; for(i=0;i<8;i+) atdatai=11; atdata3i=14; break;case 12:if(num>0) num-;if(f

12、lag=1)atdata3num=14;if(flag=2)atdata1num=12;elseatdatanum=11; atdata2num=11; break;case 13:if(flag=0) play=atdata3; flag=1; break;case 14:if(flag=2&&num=8) write_data(); for(i=0;i<8;i+) at24c02i=atdata1i; led1=0;delayms(300);led1=1;delayms(300);led1=0;delayms(300);led1=1;delayms(300);led1

13、=0;delayms(300);led1=1; for(i=0;i<8;i+) atdata2i=11; play=atdata2;for(i=0;i<8;i+) atdata1i=12;flag=0;num=0;break;case 15: flag=0;play=atdata2;break;case 16: /*on=0;flag=0;num=0;play=atdata2;for(i=0;i<8;i+) atdata2i=11;*/break;void start() /开始信号sda=1;delay();scl=1;delay();sda=0;delay();void

14、stop() /停止sda=0;delay();scl=1;delay();sda=1;delay();void respons0() /应答sda=0;delay();scl=1;delay();scl=0;delay();void respons1() /应答sda=1;delay();scl=1;delay();scl=0;delay();void init()sda=1;delay();scl=1;delay();void write_byte(uchar date)uchar i,temp;temp=date;for(i=0;i<8;i+)temp=temp<<1;

15、scl=0; delay();sda=CY;delay();scl=1;delay();/scl=0; / delay();scl=0;delay();sda=1;delay();uchar read_byte()uchar i,k;scl=0;delay();sda=1;delay();for(i=0;i<8;i+)scl=1;delay();k=(k<<1)|sda;scl=0;delay();return k;void write_add(uchar address,uchar date)start();write_byte(0xa0);respons0();write_byte(address);respons0();write_byte(date);respons0();stop();uchar read_add(uchar address)uchar date;start();write_byte(0xa0);respons0();write_byte(address);respons0();start();write_by