Question

51单片机用ADC0809转换后用LCD1602显示错误 输出电压没有规律的跳变

用51单片机 想在AD0809转换后用LCD1602显示出来 AD输出接P3口 ST与ALE接p1.2 OE接p1.0 EOC接p1.1 CLK接p1.3 ADDA B C分别接1.4 1.5 1.6 用IN3口输入电压 LCD接P0口 还没有接电压显示屏上就一直跳数 这是什么原因 程序应该怎么改啊 LCD程序是对的 主函数里注释了AD（）输出正常 大神们救我啊
#include<reg51.h>
#include"lcd.h"
#include<math.h>
unsigned char table1[]=" The voltage is: ";
unsigned char getdata;
sbit OE = P1^0;
sbit EOC = P1^1;
sbit ST = P1^2;
sbit CLK = P1^3;

unsigned int temp;

void TimeInit()
{
TMOD = 0x02;
TH0 = 216;
TL0 = 216;
IE = 0x82;
TR0 = 1;
P1 = 0x3f;
}

void AD(void)
{
ST = 0;
ST = 1;
ST = 0;
OE = 0;
Lcd1602_Delay1ms(1);
while(EOC==0);
OE = 1;
getdata = P3;
OE = 0;
}

void main()
{
unsigned char k,bai,shi,ge;
unsigned int i;
LcdInit();
TimeInit();
while(1)
{
AD();
LcdWriteCom(0x80);
for(i=0;i<16;i++)
{
LcdWriteData(table1);
}
temp = getdata*1.0/255*500;
bai=temp/100;
shi=temp%100/10;
ge=temp%10;
LcdWriteCom(0x80+0x40+6);
LcdWriteData(bai+0x30);
LcdWriteData(0x2e);
LcdWriteData(shi+0x30);
LcdWriteData(ge+0x30);
LcdWriteData('V');
Lcd1602_Delay1ms(50);
}
}

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

Answer 1

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内容为
<?xml version="1.0" encoding="utf-8"?>
<rss version="2.0">
<channel>
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<link>{dede:global.cfg_basehost/}</link>
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<generator><![CDATA[{dede:global.cfg_webname/}]]></generator>
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{dede:arclist row='1000' titlelen='100' orderby='pubdate'}
<item>
<title><![CDATA[[field:title/]]]></title>
<link>[field:arcurl/]</link>
<description><![CDATA[[field:description function='html2text(@me)'/]]]></description> <pubDate>[field:pubdate function='strftime("%a, %d %b %Y %H:%M:%S +0800",@me)'/]</pubDate>
<category><![CDATA[[field:typename/]]]></category>
<author><![CDATA[[field:writer/]]]></author>
</item>
{/dede:arclist}</channel>
</rss>

追问

这是什么...已经解决了 不过用电压源给一个电压示数偏差好大 怎么提高精准度啊

Answer 2

你好，请问你是怎么解决的啊