adc._c

atmega128单片机实现模数转换并通过1602液晶显示出结果。

#include<iom128v.h>
#include"1602.h"
#define uchar unsigned char 
#define uint unsigned int 

uchar adc_0[]={"ADC_0: .  V"};
uchar adc_1[]={"ADC_1: .  V"};





//ADC测试,使用1602显示ADC0和ADC1的值
//主函数
main()
{
uchar ten_1,ten_2,ten_3,ten_4,i;
uint adc_data0,adc_l0,adc_h0,adc_data1,adc_l1,adc_h1;
DDRA=0xff;
PORTA=0x00;
DDRB=0xff;
DDRD=0xff;
PORTD=0x00;
DDRF=0x00;
PORTF=0x00;
DDRG=0xff;
PORTG=0xff;

LcdInit();   //1602初始化
WriteChar(1,2,11,adc_0);
WriteChar(2,2,11,adc_1);
while(1)
     {
	  //取ADC_0
      ADCSRA=0x00;
      ADMUX=0x40;
      ADCSRA=(1<<ADEN)|(1<<ADSC)|(1<<ADFR)|0x07;   //128分频
      s_ms(500);                        //延时很重要
      adc_l0=ADCL;
      adc_h0=ADCH;
      adc_data0=adc_h0<<8|adc_l0;  
      adc_data0=adc_data0>>1;
      adc_data0-=35;                        //修正
	  //取ADC_1
      ADCSRA=0x00;
      ADMUX=0x41;
      ADCSRA=(1<<ADEN)|(1<<ADSC)|(1<<ADFR)|0x07;   //128分频
      s_ms(500);                        //延时很重要
      adc_l1=ADCL;
      adc_h1=ADCH;
      adc_data1=adc_h1<<8|adc_l1;  
      adc_data1=adc_data1>>1;
      adc_data1-=35;                        //修正
	  
	  
	  //显示ADC0
	  ten_3=(adc_data0)/100;
	  ten_2=(adc_data0-(ten_3*100))/10;
	  ten_1=adc_data0-(ten_3*100)-ten_2*10;
	  ten_1+=0x30;
	  ten_2+=0x30;
	  ten_3+=0x30;
	  WriteNum(1,8,(ten_3));
	  WriteNum(1,10,(ten_2));
	  WriteNum(1,11,(ten_1));
	  //显示ADC1
	  ten_3=(adc_data1)/100;
	  ten_2=(adc_data1-(ten_3*100))/10;
	  ten_1=adc_data1-(ten_3*100)-ten_2*10;
	  ten_1+=0x30;
	  ten_2+=0x30;
	  ten_3+=0x30;
	  WriteNum(2,8,(ten_3));
	  WriteNum(2,10,(ten_2));
	  WriteNum(2,11,(ten_1));
	  
	  for(i=0;i<18;i++)
	     {
	      s_ms(60000);
	     }	
	 }
}