简易单片机电压表

ID:556562 · 发表于 2019-11-16 22:17

#include<reg51.h>
#define uchar unsigned char
#define uint  unsigned int
uchar code led[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};//共阴极
uint volt;

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

void delay(uint z)
{ uchar x,y;
for(x=z;x>0;x--)
   for(y=250;y>0;y--);
}
void ADC()
{
      ST=0;
      ST=1;
      ST=0;
      while(EOC==0);
      OE=1;
      volt=P0;
      OE=0;
      volt=volt*196;
}
void display()
{
      P1=0X00;
      P2=0xef;
      P1=led[volt/10000]|0x80;
      delay(2);
      P1=0X00;
      P2=0xdf;
      P1=led[(volt/1000)%10];
      delay(2);
      P1=0X00;
      P2=0xbf;
      P1=led[(volt%100)/10];
      delay(2);
      P1=0X00;
      P2=0x7f;
      P1=led[volt%10];
      delay(2);
}

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简易单片机电压表

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