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»ùÓÚ³¬Éù²¨²â¾àµÄÖÇÄÜС³µÉè¼Æ - ͼÎÄ

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  • 2026/4/28 5:09:05

}

wei2=(real_dis/100); wei3=real_dis/1000;

/*ÏÔʾˢк¯Êýº¯Êý*/ void display(void) {

switch(ledflag)

{

case

0:P1=ledcode[wei0];ledwei0=1;ledwei1=0;ledwei2=0;ledwei3=0;break;

case

1:P1=ledcode[wei1];ledwei0=0;ledwei1=1;ledwei2=0;ledwei3=0;break;

case

2:P1=ledcode[wei2];ledwei0=0;ledwei1=0;ledwei2=1;ledwei3=0;break;

case

3:P1=ledcode[wei3];ledwei0=0;ledwei1=0;ledwei2=0;ledwei3=1;break;

}

ledflag++; if(ledflag==4) ledflag=0;

delay(0x80);//768us=0.768ms//520´Î

}

/*±¨¾¯´¦Àíº¯Êý*/ void alarm_light(void) {

if(real_dis<=10) { }

else if(real_dis<20)

39

speak=1;

{ if(alarm_flag20>=1) {

speak^=1; alarm_flag20=0; }

}

else if(real_dis<50) { if(alarm_flag50>=2) {

speak^=1; alarm_flag50=0; }

}

else if(real_dis<100) { if(alarm_flag100>=4) {

speak^=1;

alarm_flag100=0;

} } else {

speak=1;

}

}

/*ϵͳ³õʼ»¯³ÌÐò*/ void init()//ϵͳ³õʼ»¯

40

{ }

void int0(void) interrupt 0 //¹Ø±Õ¼ÆÊýÆ÷£¬´æ¼ÆÊýÖµ,ÖñêÖ¾ {

EA=0;

//¹Ø±ÕÖжÏ

//¹ØÍⲿÖÐ¶Ï //¶ÁÈ¡ÊýÖµ

temp=0xfe; P2=temp;

TMOD=0X11; //³õʼ»¯¶¨Ê±Æ÷T0,T1ÓÃÓÚ²úÉú40hz·¢É䲨 TH0=0x00; TL0=0x00; TH1=0x00; TL1=0x00; TF1=0; PX0=1; ET1=1; EA=1; TR1=1; IT0=0;

//Æô¶¯¶¨Ê±Æ÷1 //ÍⲿµÍµçƽ´¥·¢·½Ê½

EX0=0; TimerL=TL0; TimerH=TH0; TR0=0; TH0=0x00; TL0=0x00; dis_flag=1; }

//¹Ø±Õ¶¨Ê±Æ÷0

//¾àÀë¼ÆËã±êÖ¾

void time1(void) interrupt 3 {

TF1=0; TH0=0x00;

41

}

TL0=0x00; TH1=0x00; TL1=0x00; send_flag=1;

//¿ªÆô½ÓÊջز¨ÖжÏ

/*ϵͳÖ÷º¯Êý*/ void main() {

unsigned int i,j; init(); real_dis=150; delay(0x40); while(1) {

if(send_flag==1) {

//ϵͳ³õʼ»¯

//yÔ¤Éè³õÖµ£¬·ÀÖ¹¿ª»úδ·¢É䳬Éù²¨£¬µç»úËøËÀ

/* ±¨¾¯¼¶±ð¼ÆÊý*/

alarm_flag100++; alarm_flag50++; alarm_flag20++; alarm_flag10++;

/* ±¨¾¯¼¶±ð¼ÆÊý*/

send_flag=0; count++; if(count==5) {

count=0; CLK40K();

delay(0x40); //ÑÓʱ£¬±Ü¿ª·¢ÉäµÄÖ±´ïÉù²¨ÐźÅ,¿ÉÒÔµ÷½Ú²âÁ¿

42

µÄ×îС¾àÀë

}

if(dis_flag==1) {

dis_flag=0; }

distance(); EA=1; }

EX0=1;

display(); //µ÷ÓÃÏÔʾº¯Êý

if(real_dis<=10) { } }

a=temp>>i; b=temp<<(9-i); P2=a|b;

for(j=1;j<9;j++) {

delay(300);

display(); //µ÷ÓÃÏÔʾº¯Êý for(i=1;i<9;i++)//Ñ­»·ÏÂÒÆ

alarm_light(); }

}

43

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} wei2=(real_dis/100); wei3=real_dis/1000; /*ÏÔʾˢк¯Êýº¯Êý*/ void display(void) { switch(ledflag) { case 0:P1=ledcode[wei0];ledwei0=1;ledwei1=0;ledwei2=0;ledwei3=0;break; case 1:P1=ledcode[wei1];ledwei0=0;ledwei1=1;ledwei2=0;ledwei3=0;break; case 2:P1=ledcode[wei2];ledwei0=0;ledwei1=0;ledwei2=1;ledwei

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