单片机数字电压表 - - Powered by Discuz!

标题: 单片机数字电压表 [打印本页]

作者: 我还在呢 时间: 2017-5-3 15:32
标题: 单片机数字电压表
#include <AT89X51.H>
unsigned char code dispbitcode[]={0xfe,0xfd,0xfb,0xf7, 0xef,0xdf,0xbf,0x7f};
unsigned char code dispcode[]={0x3f,0x06,0x5b,0x4f,0x66, 0x6d,0x7d,0x07,0x7f,0x6f,0x00};
unsigned char dispbuf[8]={10,10,10,10,10,0,0,0};
unsigned char dispcount;
unsigned char getdata;
unsigned int temp;
long int  i;
unsigned int R1;

sbit ST=P3^0;
sbit OE=P3^1;
sbit EOC=P3^2;
sbit CLK=P3^3;

void main(void)
{
  ST=0;
  OE=0;
  ET0=1;
  ET1=1;
  EA=1;
  TMOD=0x12;
  TH0=216;
  TL0=216;
  TH1=(65536-5000)/256;
  TL1=(65536-5000)%256;
  TR1=1;
  TR0=1;
  ST=1;
  ST=0;
  while(1)
{
   if(EOC==1)
      {
      OE=1;
      getdata=P0;
      OE=0;
                  i=getdata*1960;
                     dispbuf[5]=i/10000;
                     i=i%10000;
                     dispbuf[6]=i/1000;
                     i=i%1000;
                     dispbuf[7]=i/100;
      ST=1;
      ST=0;
      }
}
}

void t0(void) interrupt 1 using 0
{
  CLK=~CLK;
}

void t1(void) interrupt 3 using 0
{
  TH1=(65536-6000)/256;
  TL1=(65536-6000)%256;
  P2=0xff;
  P1=dispcode[dispbuf[dispcount]];
  P2=dispbitcode[dispcount];
  if(dispcount==5)
{
   P1=P1 | 0x80;
}
  dispcount++;
  if(dispcount==8)
{
   dispcount=0;
}
}

作者: lpb5 时间: 2017-5-3 16:00
你这个是基于什么ＡＤ芯片的，然后通过什么输出显示的呢？？？

作者: 山中人家 时间: 2017-5-3 17:24
懂了，谢谢

作者: tgz27809 时间: 2017-6-4 16:23
有点懂了、谢谢

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