基于51单片机的电压测量（4路，ADS1110）

4路电压采集
1、测量并显示4路采集通道电压
2、设置上下限报警，电压过限蜂鸣器响
3、测量范围0-10V

#include<reg51.h>
#include "ADS1110.h"
#include "lcd1602.h"
sbit high1=P1^0;//阀值调节
sbit low1 =P1^1;
sbit high2=P1^2;
sbit low2 =P1^3;
sbit high3=P1^4;
sbit low3 =P1^5;
sbit high4=P1^6;
sbit low4 =P1^7;
sbit set=P2^7;//设置
sbit beep=P2^6;//蜂鸣器

uchar ye=0;//页数
uchar hang1[]="00.00V  00.00V ";
uchar hang2[]="00.00V  00.00V ";
uchar hang3[]="00V 00V 00V 00V";//上限
uchar hang4[]="00V 00V 00V 00V";//下限

uchar up1=6,up2=6,up3=6,up4=6;//上限
uchar down1=3,down2=3,down3=3,down4=3;//下限
uint u1=0,u2=0,u3=0,u4=0;//电压

uchar time=0;//定时
unsigned long num=0;

void main()//主函数
{
	uchar i;
	init_1602();
	TMOD|=0X01;
	TH0=0X3C;	//给定时器赋初值，定时50ms
	TL0=0XB0;	
	ET0=1;//打开定时器0中断允许
	EA=1;//打开总中断
	TR0=1;//打开定时器
	
	while(1)
	{
		//按键检测
		if(!set)
		{
			ye=!ye;
			while(!set);
		}
		if(ye)
		{
			if(!high1)		   //上限设置
			{
				if(up1<10)
					up1++;
				else
					up1=down1;
				while(!high1);
			}
			if(!high2)		 
			{
				if(up2<10)
					up2++;
				else
					up2=down2;
				while(!high2);
			}
			if(!high3)		 
			{
				if(up3<10)
					up3++;
				else
					up3=down3;
				while(!high3);
			}
			if(!high4)		 
			{
				if(up4<10)
					up4++;
				else
					up4=down4;
				while(!high4);
			}
			if(!low1)		   //下限设置
			{
				if(down1>0)
					down1--;
				else
					down1=up1;
				while(!low1);
			}
			if(!low2)		   
			{
				if(down2>0)
					down2--;
				else
					down2=up2;
				while(!low2);
			}
			if(!low3)		   
			{
				if(down3>0)
					down3--;
				else
					down3=up3;
				while(!low3);
			}
			if(!low4)		   
			{
				if(down4>0)
					down4--;
				else
					down4=up4;
				while(!low4);
			}			
		}
		//报警
			i=0;
			if((u1/100<down1)||(u1/100>up1))
				i++;
			if((u2/100<down2)||(u2/100>up2))
				i++;
			if((u3/100<down3)||(u3/100>up3))
				i++;
			if((u4/100<down4)||(u4/100>up4))
				i++;
			if(i)
				beep=0;
			else
				beep=1;
	}
}
void Timer0() interrupt 1//定时器中断
{
	if(time<10)//定时0.5s
		time++;
	else
	{
		time=0;
		u1=Ads1110_volt1();//测量
		u2=Ads1110_volt2();
		u3=Ads1110_volt3();
		u4=Ads1110_volt4();
		//电压计算
		num=u1;	
		num=num*1000/32625;
		u1=num;
		num=u2;	
		num=num*1000/32625;
		u2=num;
		num=u3;	
		num=num*1000/32625;
		u3=num;
		num=u4;	
		num=num*1000/32625;
		u4=num;
		//显示计算
		hang1[0]=u1/1000+0x30;
		hang1[1]=u1%1000/100+0x30;
		hang1[3]=u1%100/10+0x30;
		hang1[4]=u1%10+0x30;
		hang1[8]=u2/1000+0x30;
		hang1[9]=u2%1000/100+0x30;
		hang1[11]=u2%100/10+0x30;
		hang1[12]=u2%10+0x30;
		hang2[0]=u3/1000+0x30;
		hang2[1]=u3%1000/100+0x30;
		hang2[3]=u3%100/10+0x30;
		hang2[4]=u3%10+0x30;
		hang2[8]=u4/1000+0x30;
		hang2[9]=u4%1000/100+0x30;
		hang2[11]=u4%100/10+0x30;
		hang2[12]=u4%10+0x30;
		hang3[0]=up1/10+0x30;
		hang3[1]=up1%10+0x30;
		hang3[4]=up2/10+0x30;
		hang3[5]=up2%10+0x30;
		hang3[8]=up3/10+0x30;
		hang3[9]=up3%10+0x30;
		hang3[12]=up4/10+0x30;
		hang3[13]=up4%10+0x30;
		hang4[0]=down1/10+0x30;
		hang4[1]=down1%10+0x30;
		hang4[4]=down2/10+0x30;
		hang4[5]=down2%10+0x30;
		hang4[8]=down3/10+0x30;
		hang4[9]=down3%10+0x30;
		hang4[12]=down4/10+0x30;
		hang4[13]=down4%10+0x30;
		if(ye)//显示
		{
			write_string(1,0,hang3);
			write_string(2,0,hang4);
		}
		else
		{
			write_string(1,0,hang1);
			write_string(2,0,hang2);
		}
	}
	TH0=0X3C;	//给定时器赋初值，定时50ms
	TL0=0XB0;
}