#include "io8535.h"
void main()
{
 int reg,adc;
SP=0x025F;
 DDRA=0x00;
 ADCSR=0xE5;     //A/D采用32分頻  
 ADMUX=6;        //采集第6路的數(shù)據(jù)  
 for(reg=0;reg<3000;reg++)
{;}        //延時(shí)
 adc=ADC;   //adc中存放A/D轉(zhuǎn)換結(jié)果
}