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基于51单片机的两路电压检测(ADC0808)

news 2025/7/8 8:10:47

一、主要功能

二、硬件资源

三、程序编程

四、实现现象

一、主要功能

基于51单片机，通过ADC0808获取两路电压，通过LCD1602显示

二、硬件资源

基于KEIL5编写C++代码，PROTEUS8.15进行仿真，全部资源在页尾，提供安装包。

三、程序编程

#include <REGX52.H>
#include "intrins.h"
#include "LCD1602.h"
sbit CLOCK = P2^4;
sbit ST = P2^5;
sbit EOC =P2^6;
sbit OE = P2^7;
sbit aa = P3^4;
sbit bb = P3^5;
sbit cc = P3^6;#define uchar unsigned char
#define uint  unsigned intint i =0;uchar value;
uchar A1[3],A2[3];unsigned int ADC,ADC1;
void delay(char x);
void Timer0_INT() interrupt 1
{CLOCK = !CLOCK;
}void main()
{TMOD = 0x02;TH0 = 0x20;TL0 = 0x00;IE = 0x82;EA = 1; // 总中断开关ET0 = 1; // T0定时器总中断开关TR0 = 1;LCD_Init();LCD_ShowString(1,1,"-----DIANYA-----");while(1){for(i=0;i<25;i++){aa=0;bb=0;cc=0;ST = 1;ST = 0;while(EOC == 0);//正在转换{OE = 1;}ADC = P1;//ADC转换结果OE=0;delay(10);ADC= ADC*1.96;A1[0]= ADC/100;A1[1]= (ADC/10)%10;A1[2]= ADC%100;LCD_ShowNum(2,1,A1[0],1);LCD_ShowString(2,2,".");LCD_ShowNum(2,3,A1[1],1);LCD_ShowNum(2,4,A1[2],1);LCD_ShowString(2,5,"V");}for(i=0;i<25;i++){aa=1;bb=0;cc=0;ST = 1;//产生启动转换的正脉冲信号_nop_();ST = 0;_nop_();while(EOC == 0);//正在转换{OE = 1;}ADC1 = P1;//ADC转换结果OE=0;delay(10);ADC1 = ADC1*1.96;A2[0]= ADC1/100;A2[1]= (ADC1/10)%10;A2[2]= ADC1%100;LCD_ShowNum(2,10,A2[0],1);LCD_ShowString(2,11,".");LCD_ShowNum(2,12,A2[1],1);LCD_ShowNum(2,13,A2[2],1);LCD_ShowString(2,14,"V");}}
}void delay(char x)
{int i, k;for(i = 0; i < x; i++)for(k = 0; k < 120; k++);
}