/******************************************************
CCS ADC LM35 2X7Segment PIC18F88  
 *******************************************************/
#include <16F88.h> 
#device ADC=10
#USE DELAY(clock = 4000000)
 // 10 Data temps for common cathode display 0,1,2....9
const int digit[10]={0x3F, 0x06, 0x5B, 0x4F, 0x66, 0x6D, 0x7C, 0x07, 0x7F, 0x6F};
#define   display_1   pin_a1      //display unit-1 comm-catode , from lift i.e. for Tens
#define   display_2   pin_a2      // display unit-2 comm-catode , for Units
char units=0, tens=0 ;       // declare char variables
int16 adc_result,temp;
int16 repeat;
//void display();
 
 void main () 
{ 
   
   setup_adc(ADC_CLOCK_INTERNAL);    // Internal 
   setup_adc_ports (sAN0); 
   set_adc_channel (0);
   output_high(display_1);      // initially disable display unit-1 , high , and ...
   output_high(display_2);      // initially disable display unit-2 , high
   
   while (TRUE)
   { 
      //1-Get ADC reading result "number" and convert it to degrees 
         adc_result= read_adc (); //a- reat ADC to get number from 0 to 1023 for 10 bit resolution 
         temp = adc_result * 0.4883;// b- Then , convert this number to degrees for LM35 Sensor 10mV/1C 
      
      //2-Get actual valus for ones and tens digits by calculations
         units=temp%10;  // get units digit by Calculating the remainder of temp/10 
         tens=temp/10;   // get ten digit by calculated temp/10
         
      //3- Display Units 
         output_low(display_2);  // a- enable (on) display uint-2 ,ones on ,  when use transistor , invert it   
         output_b(digit[units]); // b-send display data information ,to ones  
         delay_ms(1);             // c-small delay
         output_high(display_2);   // d-disable(off) display uint-2 
      //4- Display Tens 
       output_low(display_1);  //a- enable display uint-1 , tens on , when use transistor , invert it   
         output_b(digit[tens]);  //b- send display data information , to tens  
         delay_ms(1);             //c- small delay
       output_high(display_1);   //d- disable display uint-1 , tens off 
      //////////////////////////////////////////////////////////
      
      if(temp>=18) output_high(pin_A3) ; // Example for control command
      else output_low(pin_A3);
      
     
   } 
}