sec_counter.rar_光电开关

#include<reg52.h> #define uchar unsigned char sbit start=P3^3; //sbit stop=P3^4; sbit gnd=P1^1; uchar code dulatab[ ]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};//数字编码0-9 uchar code dulatab1[ ]={0x40,0x79,0x24,0x30,0x19,0x12,0x02,0x78,0x00,0x10}; // 0 1 2 3 4 5 6 7 8 9 uchar code welatab[ ]={0xfe,0xfd,0xfb,0xf7};//位控制字 uchar msec,sec,z=0; void delay(unsigned int time)//延时 1.692ms { uchar i,j; for(i=0;i<time;i++); { for(i=0;j<110;j++); } } void writeled(uchar num ,addr) { if(addr!=1) { P2=welatab[addr]; P0=dulatab[num]; delay(100); } else { P2=welatab[addr]; P0=dulatab1[num]; delay(100); } } void display(uchar sec,msec) { uchar sech,secl,msech,msecl; msecl=msec%10; msech=msec/10; secl=sec%10; sech=sec/10; writeled(sech,0); writeled(secl,1); writeled(msech,2); writeled(msecl,3); } void init () { TMOD=0x10; //定时器1工作方式1 TH1=0xdc; TL1=0x00; //延时初始化设置 //TR1=1; EA=1; //开总开关 ET1=1; //开定时 gnd=0; start=1; } //} /*if(stop==0&&TR1==0) { delay(2); //延时防抖 if(stop==0) { sec=0; msec=0; while(stop==0) { display(sec,msec); } } }*/ void main() { //uchar a,b,c; init(); while(1) { while(start==1) {display(sec,msec);} //{ TR1=1; // delay(1500); display(sec,msec); while(start==1){display(sec,msec);} TR1=0; //while(1) display(sec,msec); while(start==1){display(sec,msec);} sec=0; msec=0; //display(sec,msec); //} } } void timer1() interrupt 3 { TH1=0xdc; TL1=0x00; msec++; if(msec>=100) { msec=0; sec++; if(sec>=100) { sec=0; } } }