Question

求51单片机用ADC0809芯片的A/D转换子程序

Answer 1

/*************** writer:shopping.w ******************/
#include <reg52.h>
#define uint unsigned int
#define uchar unsigned char

uchar code LEDData[]=
{
0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f
};
sbit OE = P1^0;
sbit EOC = P1^1;
sbit ST = P1^2;
sbit CLK = P1^3;

void DelayMS(uint ms)
{
uchar i;
while(ms--)
{
for(i=0;i<120;i++);
}
}

void Display_Result(uchar d)
{
P2 = 0xf7;
P0 = LEDData[d%10];
DelayMS(5);
P2 = 0xfb;
P0 = LEDData[d%100/10];
DelayMS(5);
P2 = 0xfd;
P0 = LEDData[d/100];
DelayMS(5);
}

void main()
{
TMOD = 0x02;
TH0 = 0x14;
TL0 = 0x00;
IE = 0x82;
TR0 = 1;
P1 = 0x3f;
while(1)
{
ST = 0;
ST = 1;
ST = 0;
while(EOC == 0);
OE = 1;
Display_Result(P3);
OE = 0;
}
}

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

Answer 2

你下的我的文档里应该有的，你仔细看一下。

Answer 3

是这个吧：
http://hi.baidu.com/%D7%F6%B6%F8%C2%DB%B5%C0/blog/item/738d6b23d0ccdde9d6cae2db.html