测电压.c

直交流电压表仿真程序加上仿真图

#include "reg51.h"
#include "lcd1602.c"
sbit start=P2^0;
sbit stop=P2^2;
sbit OE=P2^1;
sbit clk=P2^4;
sbit key=P3^0;
unsigned char flag;
void timerint()
{
	TMOD=0x11;//设置定时器0为工作方式1（为十六位计数）
	TH0=(65536-1000)/256;
	TL0=(65536-1000)%256;
	EA=1;//开总中断
	ET0=1;//开定时器0中断
	TR0=1;//启动定时器0
}
void main()
{
 int temp,a,b,temp1;
 int  sum = 0;
 LCD_Initial();
 timerint();
 GotoXY(5,0);
 Print("   The Vol Is:");
 while(1)		
	{	int k;
		OE=0;
		start=0;
		start=1;
		start=0;//下降沿，开始转换
		while(stop==0)//查询是否转换结束
		{K++;if(k>200)break;}
	  OE=1;
		if(flag==0)
		{   
				temp=P1;
				a = temp*(1000/51)*1.028;//1.032是修正系数
				temp=0;
				GotoXY(1,1);
				Print("DC");
				GotoXY(4,1);
				LCD_Write(1,a/1000+0x30);
				Print(".");
				LCD_Write(1,a%1000/100+'0');
				LCD_Write(1,a%100/10+'0');
				LCD_Write(1,a%10+'0');
				Print("V");
		}
		if(flag==1)
		{
		  
		  temp1=P1;
			b = temp1*(1000/51);
			if(b>1.5) b=b*1.491;
			if(b>1.0&&b<1.5) b=b*2;
			GotoXY(1,1);
			Print("AC");
			GotoXY(4,1);
			LCD_Write(1,b/1000+0x30);
			Print(".");
			LCD_Write(1,b%1000/100+'0');
			LCD_Write(1,b%100/10+'0');
			LCD_Write(1,b%10+'0');
			Print("V");
	
		}
	
		OE=0;
	  delay(1000);
		
		
	}
}
void time0() interrupt 1
{
	TH0=(65536-1000)/256;
	TL0=(65536-1000)%256;
	clk=~clk;
	if(key==0)
	{
	 flag++;
	 while(key==0);
	 if(flag==2) flag=0;
	}
}