#include"lcd.h" 
#include"ADC.h"
#define max_digit 5 //10 bit adc is used thus max value has is 4+1 digits
void cnvrt_int_to_arr(int,int,char[]);
int find_len(int);

void setup() {
  volatile int digit; //number of digits present in reading is stored
  volatile char arry[max_digit]; //array to store readings
  volatile int value; //POT reading is stored here
  init_adc(); //initializing ADC 
  init_port(); //port where LCD is connected is initilized
  init_lcd(); //LCD is initilized
  while(1)
  {
    value=ad_convert(); //ADC function is called and the reading is stored in variable value
    if(value==0) //if reading is zero direct o/p as '0'
    {
      write_data('0');
      delay(500);
      clear_display();
    }
    else
    {
      digit=find_len(value); //number of digit in value is found
      cnvrt_int_to_arr(value,digit,arry); //int value is stored in array as char
      write_string(arry,digit); //array elements is sent to display
      delay(100);
      clear_display(); //display is cleared
    }
  }
}
//finding length of value*********************************
int find_len(int num)
{
  volatile int digit=0;
  while(num!=0) //finding number of digits
  {
    num=num/10;
    digit++;
  }
  return digit;
}
//converting integer to arrar***************************
void cnvrt_int_to_arr(int number,int digit,char arry[])
{
  volatile char num;
  for(int i=digit-1;i>=0;i--)
  {
    num=number%10;
    arry[i]=num+'0';
    number=number/10;
  }
  arry[digit]='\0'; //last digit is null terminated
  return arry;
}
void loop() {

}