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標題: 51單片機簡易電壓表程序 [打印本頁]

作者: aliao12356 時間: 2020-6-17 14:15
標題: 51單片機簡易電壓表程序
#include <reg51.h>
#define uchar unsigned char
uchar code dispcode[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x00};
uchar count,getdata;
unsigned int voltage;
sbit ST_A=P3^0;
sbit EOC=P3^1;
sbit OE=P3^2;
sbit CLK=P3^3;

sbit ADD_A=P3^5;
sbit ADD_B=P3^6;
sbit ADD_C=P3^7;

void delayms(uchar ms)//鏁扮爜綆℃壂鎻忓歡鏃?
{
  uchar i,j;
  for (j=ms;j>0;j--)
  for (i=60;i>0;i--);
  }

  void display (void)
  {
P2=0xff;
P0=dispcode[voltage/100]+0x80;
P2=0Xfb;
delayms(10);

P2=0xff;
P0=dispcode[voltage%100/10];
P2=0Xfd;
delayms(10);

P2=0xff;
P0=dispcode[voltage%10];
P2=0Xfe;
delayms(10);
}

main()
{
   IE=0x8a;
   TMOD=0x21;

   TH0=(65536-50000)/256;
   TL0=(65536-50000)%256;

   TH1=256-2;
   TL1=256-2;

   TR0=1;
   TR1=1;

   ST_A=0;
   OE=0;
   ADD_A=0;
   ADD_B=0;
   ADD_C=0;

   while(1)
   {voltage=getdata*100;
   voltage=voltage/51;
   display();
   }
   }

   void time0() interrupt 1
   {count++;
   TH0=(65536-50000)/256;
   TL0=(65536-50000)%256;
   if(count==20)
   { count=0;
      ST_A=1;
ST_A=0;
while(EOC==0);
OE=1;
getdata=P1;
OE=0;
}
}
void time1() interrupt 3
{
   CLK=~CLK;
}

作者: theleaving 時間: 2023-9-27 09:46
請問這里具體用到的ADC芯片還有沒有介紹啊？

歡迎光臨 (http://m.zg4o1577.cn/bbs/)