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標(biāo)題: 關(guān)于測(cè)量脈沖占空比的C程序 [打印本頁(yè)]

作者: 貔貅 時(shí)間: 2018-3-20 14:50
標(biāo)題: 關(guān)于測(cè)量脈沖占空比的C程序
#include<reg51.h>
#include"lcd.h"
sbit P32=P3^2;
sbit P37=P3^7;
//unsigned char io;
void delay(uint x);
unsigned  int s0=0,s1=0,t0,t1,io1,io2,max=0,min=50000,k;

void timer0(void) interrupt 1 //定時(shí)器0服務(wù)程序
{
s0++;
}

void timer1(void)interrupt 3 //定時(shí)器1服務(wù)程序

{
s1++;
}

void main(void)
{ float io;
  LcdInit();
  TMOD=0xa2;    //定時(shí)器模式，1為2方式，但GATE為1
  EA=1;

  P32=1;          //p32,int0口先給低電平

  ET0=1;
  TH0=0x9c;
  TL0=0x9c;

  ET1=1;
  TH1=0x9c;
  TL1=0x9c;

LcdWriteCom(0x80);
LcdWriteData('B');
LcdWriteData('-');
LcdWriteData('-');
LcdWriteData('M');
LcdWriteData('A');
LcdWriteData('X');
LcdWriteData(':');

LcdWriteCom(0x8f);
LcdWriteData('%');

LcdWriteCom(0x80+0x40);
LcdWriteData('B');
LcdWriteData('-');
LcdWriteData('-');
LcdWriteData('M');
LcdWriteData('I');
LcdWriteData('N');
LcdWriteData(':');

LcdWriteCom(0x80+0x4f);
LcdWriteData('%');
   while(P32);    //這兩次是為了去除半沿
   while(!P32);
   delay(2000);
   P37=1;
  while(1)
  {    while(P37==1)
  {
   while(P32);    //這兩次是為了去除半沿
   while(!P32);
   TR0=1;             //開(kāi)始計(jì)時(shí)
   TR1=1;
   while(P32);
   TR0=0;             //T0停
   while(!P32);
   TR1=0;             //T1停
   if(s0>50&&s1>50)
   {
   t0=s0;
   t1=s1;
   }
else
   {
      t0=s0*100+(TL0-0x9c);
      t1=s1*100+(TL1-0x9c);
   }

   io=(10*t1/t0);    //浮點(diǎn)數(shù)據(jù)提高精度

   io1=10000/io;    //整型數(shù)據(jù)便于顯示

io2=io1*10;    //浮點(diǎn)數(shù)據(jù)提高精度

   if(io2<min)
   {
   min=io2;
   }
   else if(io2>max&&50000>io2)
   {
   max=io2;
   }



LcdWriteCom(0x89);
LcdWriteData('0'+max/1000);
LcdWriteData('0'+max%1000/100);
LcdWriteData('.');
LcdWriteData('0'+max%100/10);
LcdWriteData('0'+max%10);

      LcdWriteCom(0x80+0x49);
LcdWriteData('0'+min/1000);
LcdWriteData('0'+min%1000/100);
LcdWriteData('.');
LcdWriteData('0'+min%100/10);
LcdWriteData('0'+min%10);

   delay(3);
   t0=0,t1=0,s0=0,s1=0;    //清值
   TL0=0x9c;
   TL0=0x9c;
   }
   while(P37==0)
   {
   LcdWriteCom(0x80);
LcdWriteData('B');
LcdWriteData('-');
LcdWriteData('-');
LcdWriteData('M');
LcdWriteData('A');
LcdWriteData('X');
LcdWriteData(':');

LcdWriteCom(0x8f);
LcdWriteData('%');

LcdWriteCom(0x80+0x40);
LcdWriteData('B');
LcdWriteData('-');
LcdWriteData('-');
LcdWriteData('M');
LcdWriteData('I');
LcdWriteData('N');
LcdWriteData(':');

LcdWriteCom(0x80+0x4f);
LcdWriteData('%');

   LcdWriteCom(0x89);
LcdWriteData('0'+max/1000);
LcdWriteData('0'+max%1000/100);
LcdWriteData('.');
LcdWriteData('0'+max%100/10);
LcdWriteData('0'+max%10);

      LcdWriteCom(0x80+0x49);
LcdWriteData('0'+min/1000);
LcdWriteData('0'+min%1000/100);
LcdWriteData('.');
LcdWriteData('0'+min%100/10);
LcdWriteData('0'+min%10);
delay(3000);
break;
   }

}

}
void delay(uint x)
{
uint y,z;
for(y=x;y>0;y--)
{
for(z=199;z>0;z--);
}
}

作者: admin 時(shí)間: 2018-3-20 15:51
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