newad.c

ATmega16-ad1602

#define NEWADC_C
#include "includes.h"

unsigned int mega16_ad(void)
{
	unsigned int addata;
	DDRA&=~BIT(PA0);
	PORTA&=~BIT(PA0);
	SFIOR=0;
	ADMUX=0x40;
	
	ADCSR=0X80;
	ADCSRA=(1<<ADEN)|(1<<ADSC)|(1<<ADIE)|(1<<ADPS2)|(1<<ADPS1) ;//64分频
	//ADCSR|=BIT(ADSC);
	while(!ADCSR&(BIT(ADIF)));
	addata=addata+ADCH*256;

	ADCSR|=BIT(ADIF);
	ADCSR=0x00; 
	return addata;
}