gistfile1.txt

#include <18f4520.h>
#use delay(clock=20000000)
#fuses HS, NOWDT, NOLVP
#include "../Library/18f4520ptr.h"
#include "../Library/KeypadC1.h"
#include "../Library/modifiedlcd.h"

float Vres=6.0/1023.0;
float Voltage;
float Vmin=3;

#INT_AD
void int_ad_isr(){
   Voltage=*Q*Vres-Vmin;
}

main(){
   char press1, press2, press3;


   lcd_init();
   ADCON0->ADON=1;
   ADCON0->CHSx=0;
   ADCON1->PCFGx=0x0F;

   *TRISA=0x0F;      // A0 input
   *TRISB=0xF0;
   *TRISC=0x00;
   ADCON2->ADFM=1;   //RJ
   //Enable References
   ADCON1->VCFG0=1;
   ADCON1->VCFG1=1;
   //Interupt Setup
   PIE1->ADIE=1;
   INTCON->GIE=1;
   INTCON->PEIE=1;
   INTCON2->RBPU=0;

   while(1){
      //Keypad

      press1=KeyPress();
      press2+=press1;  //????
      if(press1!='@'){
         printf(lcd_putc,"\f %c %c", press1, press2);  //\n prints and clears line 2. \f prints anc clears line 1.
     //    printf(lcd_putc,"\n %c", press2);  // test line to see what is being execpted press1 vs press2
      }
      press2=press1;
      //pot

      printf(lcd_putc,"\n %fV", Voltage);
      ADCON0->GODONE=1;    //Go
      delay_ms(300);

   }
}