ad0809.h

用0809 和单片机开发的一个电要表的程序为共阳数码管显示

#ifndef _AD0809_H
#define _AD0809_H

#include<reg51.h>

#define uint   unsigned int
#define uchar  unsigned char
#define ulong  unsigned long
#define SELECTPORT P3  
#define DATAPORT   P0
#define WORDPORT   P2

sbit ST  = P3^6;
sbit OE  = P3^5;
sbit EOC = P3^4;
sbit KEY1 = P3^0;
sbit KEY2 = P3^1;

bit drop;	//drop为一表示单位是伏,否则单位是毫伏
uint AMPIN0;


extern void DisplaySingleLED(uchar NO,uchar WORDCODE);	//单个LED显示子程序
extern void Display(void);								//数码管扫描子程序
extern void AD0809Init(void);
extern void ReadAD0809(void);
extern void SystemTest(void);
extern void Delay5ms(void);
extern void keyscan(void);

#endif