电子密码锁C程序.doc

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1、精心整理#include#defineucharunsignedchar#defineuintunsignedintucharcodetable1[]="THEPASSWORD";ucharcodetable2[]="INPUTAGAIN";ucharcodetable3[]="OPEN";ucharcodetable4[]="ERROR";ucharcodetable5[]="SORRY";ucharcodetable6[]="TOMORROWAGAIN";ucharpassword[]={2,0,1,1

2、,1,1};ucharx=0,shuru[6];sbitlcdrs=P0^0;sbitlcden=P0^2;sbitlcdrw=P0^1;voiddelay(uintx)//延时子程序{uinti,j;for(i=x;i>0;i--)for(j=120;j>0;j--);}voidwrite_com(charcom)//写指令{lcdrs=0;P2=com;delay(5);lcden=1;delay(5);lcden=0;}voidwrite_data(uchardat)//写数据{lcdrs=1;P2=dat;delay

3、(5);lcden=1;delay(5);lcden=0;}voidinit()//初始化函数{lcden=0;write_com(0x38);write_com(0x0c);write_com(0x06);write_com(0x01);}ucharkeyscan(void)//键盘扫描函数，使用行列反转扫描法{ucharcord_h,cord_l;//行列值中间变量P3=0xf0;//行线输出全为0cord_h=P3&0xf0;//读入列线值if(cord_h!=0xf0)//先检测有无按键按下{delay(10);//

4、去抖if((P3&0xf0)!=0xf0){cord_h=P3&0xf0;//读入列线值P3=cord_h

5、0x0f;//输出当前列线值cord_l=P3&0x0f;//读入行线值while((P3&0x0f)!=0x0f);//等待松开并输出return(cord_h+cord_l);//键盘最后组合码值}}return(0xff);//返回该值}ucharKeyPro(void)//键盘检测函数{switch(keyscan()){case0xee:return7;break;//7按下相应的键显示相对应的码值case0

6、xde:return8;break;//8case0xbe:return9;break;//9//case0x7e:case0xed:return4;break;//4case0xdd:return5;break;//5case0xbd:return6;break;//6//case0x7d:case0xeb:return1;break;//1case0xdb:return2;break;//2case0xbb:return3;break;//3//case0x7b:case0xe7:return0;break;//0//c

7、ase0xd7://case0xb7://case0x77:default:return0xff;break;}}//////////主函数/////////////voidmain(){ucharnum,mima,wrong;lcdrw=0;init();write_com(0x82);for(num=0;num<12;num++){write_data(table1[num]);delay(1);}while(1){mima=KeyPro();write_com(0xc4+x);write_com(0x0f);if((m

8、ima!=0xff)&&(x<6)){write_data('*');shuru[x]=mima;x++;if(x==6){x=0;if(shuru[0]==password[0]&&shuru[1]==password[1]&&shuru[2]==password[2]&&//判断密码是否正确shuru[3]==password[3]&&shuru[4]==password[4]&&shuru[5]==password[5])//{write_com(0x01);delay(1);write_com(0x86);for(n

9、um=0;num<4;num++){write_data(table3[num]);delay(1);}误三次}else{write_com(0x0c);while(1);wrong++;//如果密码输入错if(wrong==3)//则不能再次输入{//write_com(0x01);