atmega8535 Ad conversion c program

atmega8535 Ad conversion c program

#include 
#define uchar unsigned char 
#define uint  unsigned int 


uchar Table[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};

uchar Data[4]={0,0,0,0}; 

void DelayMs(uint i) //0.25ms 
{uchar j; 
 for(;i!=0;i--) 
  {for(j=250;j !=0;j--) {;}} 
} 

void Display(uchar *p) //Display 
{uchar i,sel=0x01 at 5ms interval; 
 for(i=0;i<4;i++) 
  {PORTD=sel; 
   PORTB=0xff-Table[p[i]]; 
   DelayMs(20); 
   sel=sel<<1; 
  } 
} 

uint ADC_Convert(void) 
{uint temp1,temp2; 
 temp1=(uint)ADCL; 
 temp2=(uint)ADCH ; 
 temp2=(temp2<<8)+temp1; 
 return(temp2); 
} 

void Process(uint i,uchar *p) 
{p[0]=i/1000; 
 i=i%1000; 
 p[1]=i/100; 
 i=i%100; 
 p[2]=i/10; 
 i=i%10; 
 p[3]=i; 
} 

void main(void) 
{ uint i; 
 DDRA=0x00; //Set port A to input without pull-up; 
 PORTA=0x00; 
 DDRB=0xff; //Set port B to push-pull 1 output; 
 PORTB=0xff; 
 DDRD=0xff; //Set port C PORTD 
 =0xff; 
 PORTB=0x00; //Port B initializes output 1; Port C initializes output 0; Light up all digital tubes ; 
 PORTD=0xff; 
 ADMUX=0x01; //Select the second channel ADC1 ; 
 ADCSR=0xe6; //125K conversion rate , free conversion mode; start AD converter; 
 DelayMs(3000); //delay until the system is stable; 
 while(1) 
 {i=ADC_Convert(); 
  Process(i,Data); 
  Display(Data); 
 } 
}

#include
#define uchar unsigned char
#define uint  unsigned int

void DelayMs(uint i)
{uchar j;
 for(;i!=0;i--)
  {for(j=255;j!=0;j--) {;}}
}

main()
{DDRA=0xff; //Port A 1 output
 PORTA=0xff;
 DDRB=0xff; //Port B 1 output
 PORTB=0xff;
 while(1)
  {DelayMs(0);
   PORTA=0xff;
   PORTB=0x00;}
}