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51單片機超聲波測距1602顯示,代碼簡潔,高效,注釋完整方便理解

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代碼片段和文件信息

#include?
#include?“delay.h“
#include?
#include?
sbit??RX?=??P2?^?1;
sbit??TX?=??P2?^?0;


bit?flag;
unsigned?char?sign;
unsigned?int?S=0;
unsigned?int?time;
void?Init();
void??StartModule();
int?Conut(void);
unsigned?int?ij;


int?chaosheng()
{
Init();
for?(i=0;i<2;i++)
{
StartModule();
?? while(!RX); //當RX為零時等待
?? TR1=1; ????//開啟計數
?? while(RX); //當RX為1計數并等待
?? TR1=0; //關閉計數
j=Conut();
}
return?j; //計算返回
}

void?Init()
{
?TMOD?|=0x10; ???//設T0為方式1,GATE=1;
?TH1=0;
?TL1=0; ?
?TR1=1;
}
/******************************************************************************/
/****************超聲波模塊程序************************************************/
?void??StartModule()? ?????????//啟動模塊
??{
???TX=1; ?????????????????????//啟動一次模塊
???Delay999us();
???TX=0;
??}
?int?Conut(void)
{
?time=TH1*256+TL1;
?TH1=0;
?TL1=0;
?S=(time*1.7)/100;?????//算出來是CM

if((S>=200)||flag?==1)?//超出測量范圍顯示“-”
?{
??flag?=?0;
??TX?=1;
??return?6666?;
??} ?
?else
?????{
?? TX?=1;?
return?S; ?
?????}
????}

?void?zd0()?interrupt?3? ?//T0中斷用來計數器溢出超過測距范圍
??{
????flag=1; ?//中斷溢出標志
??}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????1318??2015-10-12?23:26??單個超聲波1602\chaoshengbo.c

?????文件?????????83??2015-09-20?06:52??單個超聲波1602\chaoshengbo.h

?????文件???????3699??2015-10-12?23:37??單個超聲波1602\chaoshengbo.LST

?????文件???????6256??2015-10-12?23:37??單個超聲波1602\chaoshengbo.OBJ

?????文件??????22466??2015-10-12?23:37??單個超聲波1602\ckjs

?????文件???????4660??2015-10-12?23:37??單個超聲波1602\ckjs.hex

?????文件?????????94??2015-10-12?23:37??單個超聲波1602\ckjs.lnp

?????文件??????22678??2015-10-12?23:37??單個超聲波1602\ckjs.M51

?????文件???????2328??2015-10-12?23:40??單個超聲波1602\ckjs.plg

?????文件??????73940??2015-10-12?23:40??單個超聲波1602\cscl.uvopt

?????文件??????13758??2015-10-12?23:15??單個超聲波1602\cscl.uvproj

?????文件??????72822??2015-10-12?23:36??單個超聲波1602\cscl_uvopt.bak

?????文件????????987??2015-10-12?23:29??單個超聲波1602\delay.c

?????文件????????177??2015-10-12?23:15??單個超聲波1602\delay.h

?????文件???????3749??2015-10-12?23:37??單個超聲波1602\delay.LST

?????文件???????3682??2015-10-12?23:37??單個超聲波1602\delay.OBJ

?????文件????????983??2014-11-06?13:18??單個超聲波1602\IO_def.h

?????文件???????4439??2015-05-03?11:41??單個超聲波1602\LCD1602_drv.c

?????文件???????1227??2015-05-03?11:37??單個超聲波1602\LCD1602_drv.h

?????文件???????8642??2015-10-12?23:37??單個超聲波1602\LCD1602_drv.LST

?????文件??????10001??2015-10-12?23:37??單個超聲波1602\LCD1602_drv.OBJ

?????文件????????298??2015-10-12?23:37??單個超聲波1602\main.c

?????文件???????1470??2015-10-12?23:37??單個超聲波1602\main.LST

?????文件???????4258??2015-10-12?23:37??單個超聲波1602\main.OBJ

?????文件???????1110??2014-04-18?21:39??單個超聲波1602\type.h

?????目錄??????????0??2015-10-13?21:32??單個超聲波1602

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???????????????265125????????????????????26


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