ADC0809做AD轉(zhuǎn)換的C程序

1、ADC0809 做 AD 轉(zhuǎn)換的 C 程序#include<reg52.h>unsigned char code dispbitcode=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f;unsigned char dispbuf4;unsigned int i;unsigned int j;unsigned char getdata;unsigned int temp;unsigned int temp1;unsigned char count;unsigned char d;sbit ST=P3A0;sbit 0E=P3A1；s

2、bit EOC=P3A2;sbit CLK=P3A3；sbit P34=P3A4；sbit P35=P3A5；sbit P36=P3A6；sbit P20=P2A0；sbit P21=P2A1；sbit P22=P2A2；sbit P23=P2A3；sbit P17=P1A7；void TimeInitial()；void Delay(unsigned int i)；/void TimeInitial()TMOD=0x10;TH1=(65536-200)/256;/ 定時(shí)時(shí)間為 2us, 亦即 CLK 周期為 0.4usTL1=(65536-200)%256;EA=1;ET1=1;TR1=1;

3、void Delay(unsigned int i)/ 延時(shí)函數(shù)unsigned int j;for(;i>0;i-)for(j=0;j<125;j+);void Display()/P1=dispbitcodedispbuf3;/ 十位P20=0;P21=1;P22=1;P23=1;Delay(10);P1=0x00;P1=dispbitcodedispbuf2;/ 個(gè)位P17=1;/ 顯示小數(shù)點(diǎn)P20=1;P21=0;P22=1;P23=1;Delay(10);P1=0x00;P1=dispbitcodedispbuf1;/ 十分位P20=1;P21=1;P22=0;P23=1

4、;Delay(10);P1=0x00;P1=dispbitcodedispbuf0;/ 百分位P20=1;P21=1;P22=1;P23=0;Delay(10);P1=0x00;void main()/ 主函數(shù)TimeInitial();while(1)ST=O;關(guān)閉轉(zhuǎn)換OE=0;關(guān)閉輸出ST=1;開(kāi)啟轉(zhuǎn)換ST=O;關(guān)閉轉(zhuǎn)換P34=0;選擇通道0P35=O;P36=0;while(EOC=0);/ 判斷是否轉(zhuǎn)換結(jié)束 :是則執(zhí)行以下語(yǔ)句 ,否則等待0E=1;開(kāi)啟數(shù)據(jù)輸出允許getdata=P0;/ 將數(shù)據(jù)取走 ,存放在變量 getdata 中OE=0;關(guān)閉輸出temp=getdata*1.0/255*500;/ 電壓值轉(zhuǎn)換 ,5V 作為參考電壓 ,分成 256 份 dispbuf0=temp%10;/ 百分位dispbuf1=temp/10%10;/ 十分位dispbuf2=temp/100%10;/ 個(gè)位dispbuf3=temp/1000;/ 十位Display();void t1(void) interrupt 3 using 0/