单片机数字电压表proteus仿真 ADC0809模数转换液晶显示0~50V -

#include<reg51.h>
#include<LCD1602.h>
#define uchar unsigned char
#define uint unsigned int
uint i,j,temp,temp1;
uint jj=0;
uint kk=0;
uint jjj=0;
uint kkk=0;
uint jjjj=0;
uint kkkk=0;
uint getdata,count,d;
sbit ST=P3^7;
sbit OE=P3^5;
sbit EOC=P3^6;
sbit CLK=P3^4;
sbit k1=P2^1;
sbit k2=P2^2;
sbit k3=P2^3;
char tt;
void Delay(uint n)
{
uint x;
while(n--)
{
x=5000;
while(x--);
}
}
void TimeInitial()
{
TMOD=0x10;
TH1=(65536-200)/256;
TL1=(65536-200)%256;
EA=1;
ET1=1;
TR1=1;
}
void disp_result(void)
{
LCD_set_position(2);
LCD_write_data(5*getdata/256+0x30);//各位数据显示
LCD_printc('.');//小数点
LCD_write_data(jj*10/256+0x30);//十分位显示
LCD_write_data(kk*10/256+0x30);//百分位显示
LCD_printc('v');//显示电压符号"v"
}
void disp_result1(void)
{
LCD_set_position(2);
if((15*getdata/256)<=10)
{
LCD_write_data(15*getdata/256+0x30);//各位数据显示
LCD_printc('.');//小数点
LCD_write_data(jjj*10/256+0x30);//十分位显示
LCD_write_data(kkk*10/256+0x30);//百分位显示
LCD_printc('v');//显示电压符号"v"
}
else
LCD_prints(" not ");
}
void disp_result2(void)
{
LCD_set_position(2);
LCD_write_data(5*getdata/256+0x30);//各位数据显示
LCD_write_data(jjjj*10/256+0x30);//十分位显示
LCD_printc('.');//小数点
LCD_write_data(kkkk*10/256+0x30);//百分位显示
LCD_printc('v');//显示电压符号"v"
}
void disp_result3(void)
{
LCD_set_position(2);
LCD_prints("0.00v");//显示电压符号"v"
}
void get(void)
{
ST=0;
OE=0;
ST=1;
Delay(1);
ST=0; //只需要启动一下，不需要一直保持
while(EOC==0);
OE=1;
Delay(1);
getdata=P1;
OE=0;
jj=5*getdata%256 ;
kk=10*jj%256 ;
jjj=15*getdata%256;
kkk=10*jjj%256;
jjjj=5*getdata%256;
kkkk=10*jjjj%256;
}
void main(void)
{
tt=0+0x30;
TimeInitial();
LCD_initial();
LCD_set_position(0);
LCD_printc('u');
LCD_printc('=');
//LCD_write_data(tt) ; //输出一个字节数据到LCD
LCD_set_position(8);
LCD_prints(" mofan ");
LCD_set_position(0x40);
LCD_prints(" luoyuanfeng");
while(1)
{
k1=1;
k2=1;
k3=1;
get();
if(k1==0)
disp_result2();
if(k2==0)
disp_result1();
if(k3==0)
disp_result();
if(k1&&k2&&k3==1)
disp_result3();
}
}
void t1() interrupt 3 using 0
{
TH1=(65536-200)/256;
TL1=(65536-200)%256;
CLK=~CLK;
}

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