time_interrupt.h

基于 keil下编写的用ADC0809采用查寻法测电压的代码 新手可以参考学习

#include <reg51.h>
#include <absacc.h>

#define keyboard XBYTE[0xa000] //define key
#define LEDcom1 XBYTE[0X8000]
#define LEDcom2 XBYTE[0X8001]
#define LEDcom3 XBYTE[0X8002]
#define LEDcom4 XBYTE[0X8003]
#define LEDcom5 XBYTE[0X8004]
#define LEDcom6 XBYTE[0X8005]
#define LEDcom7 XBYTE[0X8006]
#define LEDcom8 XBYTE[0X8007]

unsigned char code  table[10]={ 0x3F,/*0*/0x06,/*1*/0x5B,/*2*/0x4F,/*3*/0x66,/*4*/
					0x6D,/*5*/0x7D,/*6*/0x07,/*7*/0x7F,/*8*/0x6F,/*9*/};
unsigned char code  table2[10]={ 0xbF,/*0*/0x86,/*1*/0xdB,/*2*/0xcF,/*3*/0xe6,/*4*/
					0xeD,/*5*/0xfD,/*6*/0x87,/*7*/0xfF,/*8*/0xeF,/*9*/};
sbit ADC0809_START = P2^0;
sbit ADC0809_EOC = P2^1;
sbit ADC0809_CLOCK = P2^2;
sbit ADC0809_OE = P2^3;
sbit ADC0809_ALE = P2^4;
sbit ADC0809_ADDRESS_A = P3^0;

unsigned char PWM_voltage;
unsigned long  voltage;
unsigned long  current;

void keyboard_fun();
void display();
void ADC0809();
void compare();

void delay(unsigned int t);



void TimeInitial()
{ 
	TMOD=0x10;
	TH1=(65536-200)/256;
	TL1=(65536-200)%256;
	EA=1;
	ET1=1;
	TR1=1;
 }

 void t1(void) interrupt 3 using 0
{
	  TH1=(65536-200)/256;
	  TL1=(65536-200)%256;
	  ADC0809_CLOCK=~ADC0809_CLOCK;
}