超声波物体定位c语言程序

1.#include<REG52.H>2.#include<INTRINS.H>3.#define uchar unsigned char4.#define uint unsigned int5.#define ulong unsigned long6.7.uint c;8.ulong l,time;9.char i=1,j=1,k=80;10.char t,tp=10,ts,tg,lb,ls,lg,lsf,fh,cb,cs,cg;11.sbit RW=P2^1;12.sbit RS=P2^0;13.sbit E=P2^2;14.sbit rece=P3^3;15.sbit tup=P1^1;16.sbit tdown=P1^0;17.sbit aj=P1^2;18.sbit reset=P1^3;19.20.sbit sg=P3^7;21.sbit DQ=P3^5;22.sbit ctl=P3^5;23.24.25.void delay(uint i)26.{while(i--);27. }28.29.//************液晶显示***************//30.31.void writercom(uchar q)32.{E=1;33. RS=0;34. RW=0;35. P0=q;36. E=0;37. delay(20);38. }39.40.void writerdata(uchar o)41.{42. E=1;43. RS=1;44. RW=0;45. P0=o;46. E=0;47. delay(20);48. }49.50.void writer_d(uchar *u)51.{while(*u)52. writerdata(*u++);53. }54.55.void xsinit(void)56.{writercom(0x01);57. writercom(0x38);//使用8位数据，显示两行，使用5*7的字型//58. writercom(0x0c);//显示设置，不显示光标，字符不显闪琐//59. writercom(0x06);//光标从左往右移，内容不移//60.61. }62.63.pdisplay()64.{writercom(0x80);65. writer_d("Press any key ");66. writercom(0xba);67. writer_d(" to continue...");68. delay(2000);69.70.}71.72.bdisplay()73.{writercom(0x80);74. writer_d("Ultrasonic ");75. writercom(0xba);76. writer_d(" range finder");77. delay(60000);78. }79.80.ipdisplay()81.{writercom(0x80);82. writer_d(" Please input ");83. writercom(0xba);84. writer_d("T(");85. writerdata(0xdf);86. writer_d("C) with K1,K2.");87. delay(2000);88. }90.91.92.//*************超声波测距*************************//93.94.void csbinit() //初始化程序，计数/定时器状态 //95.{TMOD=0x12; //定时器1工作在定时方式1，定时器0工作在定时方式2//96. IE=0x84; //中断设置//97. TH0=244;98. TL0=244;99. }100.101.void sen() //超声波发射程序//102.{uchar times=0;103. TR0=1;104. TR1=1; //开定时器//105.while(1)106. {while(TF0==0);107. sg=~sg;108. times++; //翻转20次，发送10个脉冲信号的超声波//109. TF0=0;110.if(times==20)break;}111. times=0;112.}113.114.csbdata()115.{lb=l/1000000;116. ls=l%1000000/100000;117. lg=l%1000000%100000/10000;118. lsf=l%1000000%100000%10000/1000;119.if(lsf>=5)120. lg=lg+1;121.}122.123.rec()interrupt 2 using 2//接收中断程序//124.{TR1=0;//关计数器//125. ctl=0;126. time=TH1*256+TL1; //算出t的值，t的单位为us//127. l=time*c/2;128. TH1=0;129. TL1=0;130. }131.132.display1()134.while(k--)135. {ipdisplay();136.if(tup==0||tdown==0||reset==0||aj==0){i=0;break;} 137. }138. k=60;139.while(k--)140. {pdisplay();141.if(tup==0||tdown==0||reset==0||aj==0){i=0;break;} 142. }143. k=60;144. }145.measure()146.{csbdata();147.while(1)148. {if(aj==1)break;}149. ctl=0;150. sen();151. delay(200);152. ctl=1;153. }154.155.156.display2()157.{writercom(0x80);158. writer_d("T:");159. writerdata(fh);160. writerdata(ts+0x30);161. writerdata(tg+0x30);162. writerdata(0xdf);163. writer_d("C ");164. writer_d("c=");165. writerdata(cb+0x30);166. writerdata(cs+0x30);167. writerdata(cg+0x30);168. writer_d("m/s");169.while(i)170. {while(k--)171. {writercom(0xba);172. writer_d("Press K3 measure");173.if(aj==0){i=0;break;}174. delay(2000);}175. k=20;176.while(k--)178. writer_d(" ");179.if(aj==0){i=0;break;}180. delay(2000);}181. k=20;182. }183. i=1;184. measure();185. delay(2000);186. csbdata();187. writercom(0x80);188.if(l<=360000)writer_d("too near! "); 189.else if(TH1>=93)writer_d("too long! "); 190.else {csbdata();191. writer_d("L=");192. writerdata(lb+0x30);193. writerdata('.');194. writerdata(ls+0x30);195. writerdata(lg+0x30);196. writer_d("m ");197. writer_d("T:");198. writerdata(fh);199. writerdata(ts+0x30);200. writerdata(tg+0x30);201. writerdata(0xdf);202. writer_d("C ");203. }204.while(i)205.{writercom(0xba);206. writer_d("Press K4 again..");207.if(tup==0&&tdown==0){j=0;break;}208.if(reset==0){i=0;break;}209.210. }211.}212.//***************温度输入程序**************// 213.iptemp()214.{while(1)215. {if(t<0){fh=0x2d;t=~t+1;}216.else{fh=0x20;}217. ts=t/10;218. tg=t%10;219. writercom(0x80);220. writer_d(" T:");222. writerdata(ts+0x30);223. writerdata(tg+0x30);224. writerdata(0xdf);225. writer_d("C ");226.if(tup==0){tp++;if(tp>=99)tp=99;}227. delay(7000);228.if(tdown==0){tp--;if(tp<=(-30))tp=(-30);} 229. t=tp;230. delay(7000);231. writercom(0xba);232. writer_d("Press K4 finish ");233.if(reset==0)break;234. }235.}236.//********声速处理程序************************// 237.sscl()238.{c=340;239.240. cb=c/100;241. cs=c%100/10;242. cg=c%100%10;243. }244.245.//***************主程序***************//246.main()247.{while(1)248.{xsinit();249. csbinit();250. bdisplay();251. bdisplay();252. bdisplay();253. bdisplay();254. bdisplay();255. ipdisplay();256. ipdisplay();257.while(i)258. {display1();259. }260. i=1;261. delay(20000);262. iptemp(); //调温度输入函数//263. sscl();264. delay(20000);265.while(j) 266.{display2(); 267. i=1;268.269.}270.j=1;271.delay(60000); 272.}273.}。

#include<reg51.h>#include<intrins.h>/***************************数码管为共阴数码管***************************/sbit s0=P2^7;//个位选通sbit s1=P2^6;//十位选通sbit s2=P2^5;//百位选通sbit s3=P2^4;//千位选通sbit dp=P0^7;//小数点sbit in=P3^2;//外部中断1,接CX20106的7脚sbit csb=P3^3;//40KHz方波输出脚#define seg P0 //数码管的数据口为P1口#define uchar unsigned char#define uint unsigned int#define nop _nop_()/****************************/void init(void);//初始化void delay_nms(uint n);//延时nmsvoid delay100us();//延时100usvoid display(uint dat);//4位数码管显示函数,只用了3位void tran(void);//超声波测量函数/***************************/uint dis,H=100,L=20;uchar flag=0,high_time,low_time,m=0;uchar leddata[]={0x3F, //"0"0x06, //"1"0x5B, //"2"0x4F, //"3"0x66, //"4"0x6D, //"5"0x7D, //"6"0x07, //"7"0x7F, //"8"0x6F, //"9"0x77, //"A"0x7C, //"B"0x39, //"C"0x5E, //"D"0x79, //"E"0x71, //"F"0x76, //"H"0x38, //"L"0x37, //"n"0x3E, //"u"0x73, //"P"0x5C, //"o"0x40, //"-"0x00, //熄灭0x00 //自定义};void delay100us(){uchar i;for(i=0;i<50;i++);}/********************************** 函数名称:主函数修改日期:入口参数:无返回值: 无**********************************/ void main(void){init();while(1) //循环测量并显示{tran();//发送超声波信号测距display(dis);//显示距离}}/********************************** 函数名称:初始化函数修改日期:入口参数:无返回值: 无**********************************/ void init(void){TMOD=0x01;//定时器0方式1用于计时TH0=0;TL0=0; /* 设定T0的工作模式为2*/EA=1;IT0=1;//下降沿有效,左传感器}/********************************** 函数名称:延时函数修改日期:入口参数:n返回值: 无**********************************/ void delay_nms(uint n){uchar i;while(n--){for(i=123;i>0;i--);}}/********************************** 函数名称:显示函数修改日期:入口参数:data返回值: 无**********************************/ void display(uint dat){uchar i,j,k;//分别为百十个位的缓存i=dat/100;//百位j=dat%100/10;//十位k=dat%100%10;//个位s3=1;s2=0;s1=1;s0=1;seg=~leddata[i];dp=0;delay_nms(2);dp=1;s2=1;s3=1;s2=1;s1=0;s0=1;seg=~leddata[j];delay_nms(2);s1=1;s3=1;s2=1;s1=1;s0=0;seg=~leddata[k];delay_nms(2);s0=1;}函数名称:超声波测量函数修改日期:入口参数:无返回值: 无**********************************/ void tran(void){uchar i;float temp;TH0=0;TL0=0;//清定时0TR0=1;//开定时0for(i=8;i>0;i--){csb=!csb;nop;nop;nop;nop;nop;nop;nop;nop;nop;}csb=1;delay_nms(1);EX0=1;//开中断if(flag==1) //中断标志位置1,说明有回波{ //以下为路程计算temp=high_time*256+low_time;temp=(temp/1000)/2;temp*=340;temp=temp/10;dis=(unsigned int)temp;flag=0;}}/********************************** 函数名称:中断函数修改日期:入口参数:无返回值: 无void TT() interrupt 0{uint tmp;TR0=0;//关定时器0ET0=0;//关外部中断flag=1; //置位标志位tmp=TH0*256+TL0; //读取定时器的值if((tmp>0)&&(tmp<60000))//判断是否超出范围,此设置的范围为0到10米,实际不能达到10米{high_time=TH0;//把计时值放入缓冲low_time=TL0;}else //超出范围则重新测量{high_time=0;low_time=0;}}。

#include<reg52.h>#include <intrins.h>#define uint unsigned int#define uchar unsigned charsbit rs=P2^0; //1602的数据/指令选择控制线sbit rw=P2^1; //1602的读写控制线sbit en=P2^2; //1602的使能控制线sbit trig=P2^5; //超声波测距模块Trigsbit echo=P3^2; //超声波测距模块Echobit flag1; //触发信号标志位//uchar count; //中断累加变量long int distance; //测量所得距离unsigned char code table[ ]={"0123456789"}; //定义字符数组显示数字/*------------------------------------------------延时函数------------------------------------------------*/void delay(uint n){uint x,y;for(x=n;x>0;x--)for(y=110;y>0;y--);}/*------------------------------------------------延时函数------------------------------------------------*/void delayt(uint x){uchar j;while(x-- > 0){for(j = 0;j < 125;j++){;}}}/*------------------------------------------------1602写命令函数------------------------------------------------*/void lcd_wcom(uchar com){rs=0; //选择指令寄存器rw=0; //选择写P0=com; //把命令字送入P0delay(5); //延时一小会儿，让1602准备接收数据en=1; //使能线电平变化，命令送入1602的8位数据口,这点非常重要en=0;}/*------------------------------------------------1602写数据函数------------------------------------------------*/void lcd_wdat(uchar dat){rs=1; //选择数据寄存器rw=0; //选择写P0=dat; //把要显示的数据送入P0delay(5); //延时一小会儿，让1602准备接收数据,也就是检测忙信号，这点非常重要。

/*{HZ即单位s的倒数}本晶振为12MHZ,因此外部的时钟频率为12MHZ,所以部的时钟频率为(12MHZ)/12=1MH即1000000HZ,而机械频率为1/(1MHZ),即每完成一次计算(即定时器的值加一)用时0.000001s,即1us(微秒).*//***********************************************************************************///具有模式选择.*include<reg52.h>*define UC unsigned char*define UI unsigned intvoid delay(UI); //延时9.56us程序sbit beep = P1^3; //用于声音报警sbit Lv = P1^7; //用于光报警sbit Hong = P1^6;sbit QD = P3^7;//K8 //P3^7口(K8)为确定键,sbit G* = P3^1;//K7 //P3^3口(K2)为修改键,sbit S* = P3^6;//K6 //P3^2(K3)为测量键.sbit B* = P3^0;//K5 //个(K7),十(K6),百(K5),三位修改键sbit a = P1^2;//百位//数码管位选sbit b = P1^1;//十位sbit c = P1^0;//个位sbit trig = P1^4; //方波发射端sbit echo = P1^5; //超声波接收端void IntConfiguration(); //用来"设置中断"的函数,P3^3口(K2)为修改键,P3^2(K3)为测量键.void TimeConfiguration(); //用来"设置定时器"的函数sbit K1 = P3^4;//动态sbit K4 = P3^5;//静态//用于进展模式切换(K1、K4键)void *ia*ian(); //修改函数,用来修改下限void shang*ian(); //修改函数,用来修改上限UI min[3]={0,5,0}; //报警极限,拆分为"百十个"三位UI ma*[3]={3,0,0}; //MIN,MA* 用来存储最大和最小值void MIN*ianshi(UI); //最小围和最大围的显示void MA**ianshi(UI);UC code CharacterCode[10] = {0*3f,0*06,0*5b,0*4f,0*66,0*6d,0*7d,0*07,0*7f,0*6f};//数码管数字字符(P2口)/********************************主函数*********************************************/ void main(){TimeConfiguration(); //设置定时器0IntConfiguration(); //设置中断允许,K4键为修改键,K8键为确定键while(1){MIN*ianshi(40); //1.50169000sMA**ianshi(40); //1.50098300s}}/*******************************超声波测距函数********************************************/void zhongduan_0() interrupt 0 //测量中断函数(外部中断0){UI moshi = 0;UI juli = 0;UI time = 0;UI MA*, MIN;UI TT = 0;//用于第一次测量时给P1^5口置一,以便正确读取数值UI t1, t2, t3;UI GE = 0, SHI = 0, BAI = 0; //先定义三个变量,用来显示测量的距离.a = 0;b = 0;c = 0;P2 =~ 0*00; //防止最后显示的那个数码管一直亮MA* = ma*[0]*100 + ma*[1]*10 + ma*[2]; //计算最大与最小值MIN = min[0]*100 + min[1]*10 + min[2];while(1)//下面进展测量{while(1) /*先进展模式判断*/{if(0 == K1){moshi = 1;break; //模式1为动态测量}if(0 == K4){moshi = 2;break; //模式2为静态测量}if(0 == QD)return; //完毕测量函数}/********************************************计算距离************************************************/loop: beep = 1;//关掉定时器Lv = 1;Hong = 1;//关掉灯a = 0;b = 0;c = 0;P2 =~ 0*00;//防止最后显示的那个数码管一直亮if( (0 == QD)&&(1 == moshi) )break;if( (0 == QD)&&(2 == moshi) ){delay(55500);if(0 == QD){delay(55500);if(0 == QD)break;}}t1 = 35,t2 = 35;t3 = 35;trig = 0;echo = 0;delay(2); //初始化拉低两个端口trig = 1;delay(2);trig = 0; //输出端输出27us的高电压,并将输出端口拉低while(echo == 0); //判断是否有回波返回,有则开启定时器TR0 = 1; //当有高电平输出时,开启定时器while(echo == 1);TR0 = 0; //当高电平变成低电平时,关闭定时器++TT; //测量值加一,记录测量次数if(1 == TT){delay(55500);TH0 = 0*00;TL0 = 0*00; //定时器的初值,定时器的定时为65536us.goto loop;}time = TL0 + TH0*256; //接下来显示测量的距离TH0 = 0*00;TL0 = 0*00; //定时器的初值,定时器的定时为65536us.juli = ( int )( (time*0.034)/2 );BAI = ( (juli%1000)/100 ); SHI = ( (juli%100)/10 ); GE = ( juli%10 );/******************************************两种模式的距离显示********************************************/if(juli > MA*){Hong = 0;Lv = 1;while( t1-- ){a = 0;b = 1;c = 1;P2 =~ CharacterCode[BAI];delay(400);a = 1;b = 0;c = 1;P2 =~ CharacterCode[SHI];delay(400);a = 1;b = 1;c = 0;P2 =~ CharacterCode[GE];delay(390);beep = 0;if( (1 == moshi)&&(0 == t1) )goto loop;if(moshi == 2){t1 = 2;if(0 == QD)goto loop;}}}else if(juli < MIN){Lv = 0;Hong = 1;while( t2-- ){a = 0;b = 1;c = 1;P2 =~ CharacterCode[BAI];delay(500);a = 1;b = 0;c = 1;P2 =~ CharacterCode[SHI];delay(500);a = 1;b = 1;c = 0;P2 =~ CharacterCode[GE];delay(400);beep = 0;delay(100);beep = 1;if( (1 == moshi)&&(0 == t2) )goto loop;if(2 == moshi){t2 = 2;if(0 == QD)goto loop;}}}else{beep = 1;Lv = 1;Hong = 1;while( t3-- ){a = 0;b = 1;c = 1;P2 =~ CharacterCode[BAI];delay(600);a = 1;b = 0;c = 1;P2 =~ CharacterCode[SHI];delay(600);a = 1;b = 1;c = 0;P2 =~ CharacterCode[GE];delay(600);if( (1 == moshi)&&(0 == t3) )goto loop;if(2 == moshi){t3 = 2;if(0 == QD)goto loop;}}}//显示完毕}}/***********************************************************************************/ void zhongduan_1() interrupt 1 //定时器溢出时的中断,显示测得的距离(定时器中断0){TH0 = 0*00;//定时器的初值,定时器的定时为65536us,TL0 = 0*00;}/***********************************************************************************/ void zhongduan_2() interrupt 2 //修改键(K4)的中断函数(外部中断1){*ia*ian();while(QD==0);shang*ian();}/**********************************************************************************/ void MIN*ianshi(UI TT) //显示最小距离{while(TT--){a = 0;b = 1;c = 1;P2 =~ CharacterCode[min[0]];delay(500);a = 1;b = 0;c = 1;P2 =~ CharacterCode[min[1]];delay(500);a = 1;b = 1;c = 0;P2 =~ CharacterCode[min[2]];delay(500);}P2 =~ 0*00;delay(55500);}void MA**ianshi(UI TT) //显示最大距离{while(TT--){a = 0;b = 1;c = 1;P2 =~ CharacterCode[ma*[0]];delay(500);a = 1;b = 0;c = 1;P2 =~ CharacterCode[ma*[1]];delay(500);a = 1;b = 1;c = 0;P2 =~ CharacterCode[ma*[2]];delay(500);}P2 =~ 0*00;delay(55500);}/***********************************************************************************/ void delay(UI T) //延时程序{while(T--);}/***********************************************************************************/ void IntConfiguration() //设置中断函数{//优先级设置PT2 = 0;PS = 0;PT1 = 0;P*1 = 0;PT0 = 1;P*0 = 0;IT1 = 1; //外部中断0为跳变沿触发E*1 = 1; //P3^3口(K4键)修改键,中断允许开启IT0 = 1; //外部中断1为跳变沿触发E*0 = 1; //P3^2口(K1键)测量键,中断允许开启ET0 = 1; //定时器0的中断允许开启EA = 1;}void TimeConfiguration() //设置定时器,以及定时器的初值{TMOD = 0*01;//设定只使用0号定时器; 模式:定时器; 工作方式:1号工作方式.//下面是定时器的初始值, TR0,TR1是用来开启定时器的TH0 = 0*00;//定时器的初值,定时器的定时为50us.TL0 = 0*00;/*1号定时器不用,所以没有TH1,TL1*/}/***********************************************************************************/ void *ia*ian() //修改下限{while(1){if(B*==0)//百位{P2=~0*00;min[0]++;if(min[0]==10)min[0]=0;delay(60000);}a = 0;b = 1;c = 1;P2 =~ CharacterCode[min[0]];delay(100);if(S*==0)//十位{P2=~0*00;min[1]++;if(min[1]==10)min[1]=0;delay(60000);}a = 1;b = 0;c = 1;P2 =~ CharacterCode[min[1]];delay(100);if(G*==0)//个位{P2=~0*00;min[2]++;if(min[2]==10)min[2]=0;delay(60000);}a = 1;b = 1;c = 0;P2 =~ CharacterCode[min[2]];delay(100);if(QD==0){a = 0;b = 0;c = 0;P2 = 0*ff;break;}}}void shang*ian() //修改上限{while(1){if(B*==0)//百位{P2=~0*00;ma*[0]++;if(ma*[0]==10)ma*[0]=0;delay(60000);}a = 0;b = 1;c = 1;P2 =~ CharacterCode[ma*[0]];delay(100);if(S*==0)//十位{P2=~0*00;ma*[1]++;if(ma*[1]==10)ma*[1]=0;delay(60000);}a = 1;b = 0;c = 1;P2 =~ CharacterCode[ma*[1]];delay(100);if(G*==0)//个位{P2=~0*00;ma*[2]++;if(ma*[2]==10)ma*[2]=0;delay(60000);}a = 1;b = 1;c = 0;P2 =~ CharacterCode[ma*[2]];delay(100);if(QD == 0){a = 0;b = 0;c = 0;P2 = 0*ff;while(QD == 0);break;}}}/************************************************************************************/。

#include<reg51.h>#include<intrins.h> //包含_nop_()函数定义的头文件#include<1602.h>#define uchar unsigned char#define uint unsigned intfloat time;int s,total=0,i;float v;bit flag=0; //定义标志位/****************位定义***************************/sbit Trig =P1^0; //超声波信号发生引脚sbit Echo=P1^1; //超声波信号接收引脚sbit feng=P2^4; //蜂鸣器引脚/***************显示******************************/uchar code num[]={"0123456789.merror"};uchar code JL[]={"distance:"}; //显示距离uchar disbuff[]={0,0,0,0};//缓存区间/*****************************************************函数功能：延时1ms注：不同单片机不同晶振需要对此函数进行修改***************************************************/void Lcd_delay1ms(){unsigned char i,j;for(i=0;i<90;i++)for(j=0;j<1;j++);}/***************************************************** 函数功能：延时若干毫秒入口参数：n***************************************************/void Lcd_delay(unsigned int n){unsigned int i;for(i=0;i<n;i++)Lcd_delay1ms();}函数功能：判断液晶模块的忙碌状态返回值：result。

51单⽚机超声波模块的C语⾔程序//超声波模块程序//超声波模块程序//Trig = P2^0//Echo = P3^2#include#define uchar unsigned char#define uint unsigned intint time;int succeed_flag;uchar timeL;uchar timeH;sbit Trig=P1^0;sbit Echo=P3^2;uchar codetable[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f, 0x6f};uchar code table1[]={0,1,2,3,4,5,6,7};//void delay(uint z){uint x,y;for(x=z;x>0;x--)for(y=110;y>0;y--);}//void delay_20us(){uchar a ;for(a=0;a<100;a++);}//************************************************************ ***//显⽰数据转换程序void display(uint temp){uchar ge,shi,bai;bai=temp/100;shi=(temp%100)/10;ge=temp%10;P2=table1[2];P0=table[ge];delay(1);P2=table1[1];P0=table[shi];delay(1);P2=table1[0];P0=table[bai];delay(1);}//************************************************************ ***void main(){uint distance;// test =0;Trig=0; //⾸先拉低脉冲输⼊引脚EA=1; //打开总中断0TMOD=0x10; //定时器1，16位⼯作⽅式while(1){EA=0; //关总中断Trig=1; //超声波输⼊端delay_20us(); //延时20usTrig=0; //产⽣⼀个20us的脉冲while(Echo==0); //等待Echo回波引脚变⾼电平 succeed_flag=0; //清测量成功标志EA=1;EX0=1; //打开外部中断0TH1=0; //定时器1清零TL1=0; //定时器1清零TF1=0; //计数溢出标志TR1=1; //启动定时器1delay(20); //等待测量的结果TR1=0; //关闭定时器1EX0=0; //关闭外部中断0if(succeed_flag==1){time=timeH*256+timeL;distance=time*0.0172; //厘⽶}if(succeed_flag==0){distance=0; //没有回波则清零// test = !test; //测试灯变化}display(distance);}}//************************************************************ *** //外部中断0，⽤做判断回波电平void exter() interrupt 0 // 外部中断0是0号{EX0=0; //关闭外部中断timeH =TH1; //取出定时器的值timeL =TL1; //取出定时器的值succeed_flag=1;//⾄成功测量的标志}//************************************************************ **** //定时器1中断,⽤做超声波测距计时void timer1() interrupt 3 //{TH1=0;TL1=0;}1602液晶显⽰的超声波模块程序接⼝程序⾥边都有、、#include//#include#define uchar unsigned char#define uint unsigned intsbit lcdrs=P2^3;sbit lcden=P2^2;sbit trig=P2^0; //超声波发送//sbit echo=P3^2; //超声波接受//P0____________DB0-DB7uchar dis[]="Disp_HC-SR04";uchar num[]="0123456789";uint distance;void delay(uint z){uint x,y;for(x=z;x>0;x--)for(y=121;y>0;y--);}void HC_init(){TMOD=0x09;TR0=1;TH0=0;TL0=0;}uint HC_jisuan(){uint dist,timer;timer=TH0;timer<<=8;timer=timer|TL0;dist=timer/53; //晶振11.0592MHz 距离cm=微秒us/58return dist; //1个机器周期是12个时钟周期 timer*12/(58*11.0592)=timer/53 }void HC_run(){uint tempH=0x00,tempL=0x00;TH0=0;TL0=0;trig=1;delay(1);trig=0;while((TH0-tempH!=0||TL0-tempL!=0)||(TH0==0&&TL0==0)){tempH=TH0;tempL=TL0;}delay(1);}void lcd_write_com(uchar com) //LCD写指令{ lcdrs=0;P0=com;delay(1);lcden=1;delay(1);lcden=0;}void lcd_write_data(uchar date) //LCD写数据{ lcdrs=1;P0=date;delay(1);lcden=1;delay(1);lcden=0;}void lcd_init() //LCD初始化{lcden=0;lcd_write_com(0x38);lcd_write_com(0x0c);lcd_write_com(0x06);lcd_write_com(0x01); }void lcd_display(uchar temp) {lcd_write_com(0x82);for(i=0;i<12;i++){lcd_write_data(dis[i]);}lcd_write_com(0x80+0x41);lcd_write_data('D');lcd_write_data('i');lcd_write_data('s');lcd_write_data('t');lcd_write_data('a');lcd_write_data('n');lcd_write_data('c');lcd_write_data('e');lcd_write_data(':');lcd_write_data(num[temp/100]); lcd_write_data(num[temp/10%10]); lcd_write_data(num[temp%10]); lcd_write_data('c'); lcd_write_data('m');}void main(){lcd_init();HC_init();while(1){HC_run();distance=HC_jisuan();lcd_display(distance);delay(200);}}。

本人收藏的的一些超声波程序，希望对大家有用(还有原理图，需要的话去我空间去)：程序一：#include <reg52.h>#define uchar unsigned char#define uint unsigned int#define count 4uchar data IRcode[4]; // 定义一个4 字节的数组用来存储代码uchar table[4]; uchar enled[4]={0x1f,0x2f,0x4f,0x8f};uchar CodeTemp,temp,tt; // 编码字节缓存变量uchari,j,k,temp,timeH,timeL,succeed_flag,flag,h,h1,h2,a,key,key1,key2;// 延时用的循环变量uint distance,distance1,time; // sbit IRsig nal=P3T; //HS0038 sbit come=P3A3;sbit d=P1A1；// 发送码sbit BZ=P1A0;sbit s=P3A7;//38ksbit ss=P3A6;//38kuchar m;// 开关控制//sbit n=P2;// 电机反转code距离,time接收头OUT端直接连P3.2(INT0) unsignedseg7code[10]={0xa0,0xbb,0x62,0x2a,0x39,0x2c,0x24,0xba,0x20,0x28}; 显示段码char ///**************************** void timer0() interrupt 1{TH0=(65536-count)/256; TL0=(65536-count)%256; s=~s;// 产生38K信号ss=~ss;//tt++;// 发送超声波个数}/**************************** ************************/ void Delay0_9ms(void) 定时器0 中断************************/ 延时0.9ms 子程序{uchar j,k;for(j=18;j>0;j--)for(k=20;k>0;k--); }/*************************** void Delay1ms(void){uchar i,j;for(i=2;i>0;i--)for(j=230;j>0;j--);}/*************************** void Delay4_5ms(void) {uchar i,j;for(i=10;i>0;i--)for(j=225;j>0;j--);}/**************************** ************************/ 延日寸1ms 了稈，序**********************/延时 4.5ms 子程序*********************程序void Delay(void){uchar i,j,k;for(i=100;i>0;i--)for(j=100;j>0;j--)for(k=3;k>0;k--);}/****************************************************/程序// 延时程序void ledDelay(unsigned int tc){ unsigned int i,j; for(i=0;i<10;i++) for(j=0;j<tc;j++);}/************************************************ ****************/// 定寸器1 中断, 用做超声波测距无回波void timer1() interrupt 3{ TR1=0; ET1=0;EX1=0;TH1=0;TL1=0;date=0;for(i=0;i<120;i++) {P2=enled[i%4]&m;//P2 口高四位控制数码管，低位陪分控制继电器 P0=seg7code[table[i%4]]; // 取出千位数，查表，输出。