ADC0808数字电压表设计

ID:412827 · 发表于 2020-5-25 12:29

程序
#include<reg51.h>
//#include "LM016L.h"

sbit CLK=P2^4;
sbit ST=P2^5;
sbit EOC=P2^6;
sbit OE=P2^7;
sbit BUZZ=P3^1;
float d;

#define uint unsigned int
#define  uchar unsigned char
uchar code DSY_CODE[]={0x3f, 0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d, 0x07, 0x7f, 0x6f};
uchar code DSY_CODE1[]={0xbf, 0x8f, 0xdb, 0xcf, 0xe6, 0xed, 0xfd, 0x87, 0xef, 0xdf};

void DelayMs(uint ms)
{
   uchar i;
   while(ms--)
   for(i=0;i<120;i++);
}

void Disp_result(d)
{
d=(d/255.000)*5000;

P2=0xfe;
P0=DSY_CODE1[d/1000];
DelayMs(5);

   P2=0xfd;
P0=DSY_CODE[(d/100)%10];
DelayMs(5);

P2=0xfb;
P0=DSY_CODE[(d/10)%10];
DelayMs(5);

P2=0xf7;
P0=DSY_CODE[(d)%10];
DelayMs(5);

if(d>3210)
{BUZZ=0;
}
else{BUZZ=1;
}
}

void  Timer0_INT() interrupt 1
{
CLK=~CLK;
}

void main()
{

  TMOD=0x02;
TH0=0x14;
TL0=0x00;
IE=0x82;
TR0=1;
P3=0x3f;
BUZZ=1;

while(1)
{
ST=0;ST=1;ST=0;
while(EOC==0);
OE=1;
Disp_result(P1);
OE=0;
}
}

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