main._c

ATMEGA128的ADC驱动程序

//ICC-AVR application builder : 2008-3-30 0:59:02
// Target : M128
// Crystal: 8.0000Mhz

#include "config.h"
float adc_result;
void adc_init(void)
{
 ADCSRA = 0x00; //disable adc
 ADMUX = (1<<REFS0)|(1<<ADLAR);
 ACSR = (1<<ACD);
 ADCSRA = (1<<ADEN);
}

void get_adc(unsigned adc_channel)
{
 unsigned char value; 
 adc_init();
 ADMUX += adc_channel;
 ADCSRA |= (1<<ADSC);
 
 delay_nus(100);
 value=ADCH;
 adc_result=(value*4.98)/256; 
}

void main(void)
{ 
 HC_595_init();
 
 while(1)
 {
  get_adc(1);
  Seg7_Led_float(adc_result);
 }
}