基于51单片机密码电子锁+protues仿真电路图

#include<reg51.h> #define uchar unsigned char #define uint unsigned int uchar code table[]="Input Password:"; uchar code table1[]=" Input Error! "; uchar code table2[]="You are welcome!"; uchar code table3[]="****** "; uint yuanmima[6]={0x38,0x38,0x38,0x38,0x38,0x38}; uint inputmima[7]; sbit lcdrs=P2^0; sbit lcdrw=P2^1; sbit lcden=P2^2; sbit ledred=P2^4; sbit ledgreen=P2^3; sbit dianji=P2^5; uint x,num,temp,keyscan(); void delay(uint z) { uint x,y; for(x=0;x<z;x++) for(y=0;y<110;y++); } void write_com(uchar com) { lcdrs=0; lcdrw=0; lcden=0; P0=com; delay(5); lcden=1; delay(5); lcden=0; } void write_data(uchar date) { lcden=0; lcdrs=1; lcdrw=0; P0=date; delay(5); lcden=1; delay(5); lcden=0; } void init() { write_com(0x38); delay(5); write_com(0x01); delay(5); write_com(0x06); delay(5); write_com(0x0d);//0x0d 显示光标 delay(5); } void main() { uint a=0,b=0,d=0,q=0,input; delay(5); init(); ledred=0; dianji=1; ledgreen=1; write_com(0x80); for(x=0;x<16;x++) { write_data(table[x]); delay(5); } write_com(0x80+0x44); while(1) { if(keyscan()!=0) {input=keyscan(); inputmima[a]=input; a++; write_com(0x80+0x44+b); write_data(keyscan()); delay(500); write_com(0x80+0x44+b); write_data(0x2A); num=0; b++; if(b>7) { write_com(0x80); for(x=0;x<16;x++) { write_data(table1[x]); delay(5); } delay(500); break; } else if(input==0x23&&b<=7) { if(b<=6) { write_com(0x80); for(x=0;x<16;x++) { write_data(table1[x]); delay(5); } delay(500); break; } if(b==7) { while(q<=5) { if(inputmima[q]==yuanmima[q]) { d++; } q++; } if(d==6) { ledgreen=0; dianji=0; write_com(0x80); for(x=0;x<16;x++) { write_data(table2[x]); delay(5); } write_com(0x80+0x44); for(x=0;x<7;x++) { write_data(table3[x]); delay(5); } delay(5); dianji=0; ledgreen=0; delay(5000); dianji=1; ledgreen=1; delay(5); break; } else { write_com(0x80); for(x=0;x<16;x++) { write_data(table1[x]); delay(5); } delay(500); break; } } } else if(input==0x2A) { break; } } } } uint keyscan() { P1=0xfe; temp=P1; temp=temp&0xf0; while(temp!=0xf0) //确认是否按下 { delay(5); temp=P1; temp=temp&0xf0; while(temp!=0xf0) { temp=P1; if(temp==0xee) { num=0x32; ledgreen=0; delay(500); ledgreen=1; break; } if(temp==0xde) { num=0x31; ledgreen=0; delay(500); ledgreen=1; break; } if(temp==0xbe) { num=0x30; ledgreen=0; delay(500); ledgreen=1; break; } else { num=0; break; } while(temp!=0xf0) //松手检测 { temp=P1; temp=temp&0xf0; delay(10); } } } P1=0xfd; temp=P1; temp=temp&0xf0; while(temp!=0xf0) //确认是否按下 { delay(5); temp=P1; temp=temp&0xf0; while(temp!=0xf0) { temp=P1; if(temp==0xed) { num=0x35; ledgreen=0; delay(500); ledgreen=1; break; } if(temp==0xdd) { num=0x34; ledgreen=0; delay(500); ledgreen=1; break; } if(temp==0xbd) { num=0x33; ledgreen=0; delay(500); ledgreen=1; break; } else { num=0; break; } while(temp!=0xf0) //松手检测 { temp=P1; temp=temp&0xf0; delay(10); } } } P1=0xfb; temp=P1; temp=temp&0xf0; while(temp!=0xf0) //确认是否按下 { delay(5); temp=P1; temp=temp&0xf0; while(temp!=0xf0) { temp=P1; if(temp==0xeb) { num=0x38; ledgreen=0; delay(500); ledgreen=1; break; } if(temp==0xdb) { num=0x37; ledgreen=0; delay(500); ledgreen=1; break; } if(temp==0xbb) { num=0x36; ledgreen=0; delay(500); ledgreen=1; break; } else { num=0; break; } while(temp!=0xf0) //松手检测 { temp=P1; temp=temp&0xf0; delay(10); } } } P1=0xf7; temp=P1; temp=temp&0xf0; while(temp!=0xf0) //确认是否按下 { delay(5); temp=P1; temp=temp&0xf0; while(temp!=0xf0) { temp=P1; if(temp==0xe7) { num=0x2A; ledgreen=0; delay(500); ledgreen=1; break; } if(temp==0xd7) { num=0x23; ledgreen=0; delay(500); ledgreen=1; break; } if(temp==0xb7) { num=0x39; ledgreen=0; delay(500); ledgreen=1; break; } else { num=0; break; } while(temp!=0xf0) //松手检测 { temp=P1; temp=temp&0xf0; delay(10); } } } return num; }