shuzi.rar_加密锁

#include<reg52.h> #include<intrins.h> #define uint unsigned int #define uchar unsigned char sbit beep=P1^5; unsigned char num,t,temp,keynum; unsigned char code table1[]={0xff,0xfb,0xf7,0xf3,0xef,0xeb,0xe7,0xe3}; unsigned char code table2[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83}; void delay(unsigned int z) { uchar x,y; for(x=z;x>0;x--) for(y=110;y>0;y--); } void key() { P0=0xfd; temp=P0; temp=temp&0xf0; while(temp!=0xf0) { delay(5); temp=P0; temp=temp&0xf0; while(temp!=0xf0) { temp=P0; //这一步赋值绝对不能少啊 switch(temp) { case 0xed:keynum=1; break; case 0xdd:keynum=2; break; case 0xbd:keynum=3; break; case 0x7d:keynum=4; break; } while(temp!=0xf0) { temp=P0; temp=temp&0xf0; } } } P0=0xfb; temp=P0; temp=temp&0xf0; while(temp!=0xf0) { temp=P0; //这里一定是把P0赋给temp temp=temp&0xf0; while(temp!=0xf0) { temp=P0; //这一步赋值绝对不能少啊 switch(temp) { case 0xeb:keynum=5; break; case 0xdb:keynum=6; break; case 0xbb:keynum=7; break; case 0x7b:keynum=8; break; } while(temp!=0xf0) { temp=P0; temp=temp&0xf0; } } } P0=0xf7; temp=P0; temp=temp&0xf0; while(temp!=0xf0) { temp=P0; temp=temp&0xf0; while(temp!=0xf0) { temp=P0; //这一步赋值绝对不能少啊 switch(temp) { case 0xe7:keynum=9; break; case 0xd7:keynum=0; break; case 0xb7:keynum=10; break; case 0x77:keynum=11; break; } while(temp!=0xf0) { temp=P0; temp=temp&0xf0; } } } //return keynum; } void main() { TMOD=0x01; TH0=(65536-50000)/256; TL0=(65536-50000)%256; EA=1; ET0=1; TR0=1; keynum=0; P2=table1[0]; while(1) { key(); P1=table2[keynum]; // if(keynum==10) // { // key(); // if(num==3) // P1=table2[0]; // } // switch(num) // { // case 1:if(keynum==1) P1=table2[0]; // break; // } } } void timer0() interrupt 1 { TH0=(65536-50000)/256; TL0=(65536-50000)%256; num++; }