ad.c.100829091716

avr基础程序大全

#include <iom16v.h>
#include <macros.h>
#define  uchar unsigned char
#define  uint  unsigned int

uchar const table[10] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
		  
uchar const LED_W[8] = {0,1,2,3,4,5,6,7};				   
void delay(uint ms)
{
        uint i,j;
	for(i=0;i<ms;i++)
	   {
	   for(j=0;j<1141;j++);
       }
}
void show(uchar j,uchar k)
{
      
	  	 DDRA=0xff;			
		PORTA = table[j];		 // i 值的 个位数
		PORTC = LED_W[k];		 //点亮第一位数码管
		
		delay(2);
	
		
	
}


uint mega16_ad()
{
     uint addata;
	 DDRA&=~BIT(PA0);
	 PORTA&=~BIT(PA0);
	 ADMUX=0x40;
	 ADCSR=0X80;
	 ADCSR|=BIT(ADSC);
	 while(!(ADCSR&(BIT(ADIF))));
     addata=ADCL;
	 addata=addata+ADCH*256;
	 return addata;
}   

void main()
{
   uint ada,i,ad[4],a=5000;
       
		DDRC=0XFF;		
		PORTC=0X00;
   while(1)
   {
      ada=mega16_ad();//999  0999
	  
	/* if(ada>600)
	  {
	   			 DDRA|=BIT(7);
	 			 PORTA&=~BIT(7);
	  }
	  else
	  {
	   	  DDRA|=BIT(7);
		  PORTA|=BIT(7);
	  }*/
	  for(i=0;i<4;i++)
	  {
	    ad[3-i]=ada%10;
		ada=ada/10;
	  }
	 
	  
	  
	  			    for(i=0;i<4;i++)
	 				 {
	   				   show(ad[i],i);
		 
	  	 			   }
		
	  
   }
}