MPLAB X IDE ADC code not working - pic

Question

i am a beginner to microcontroller and I just got into ADC but whenever I try to do a conversion it never works, I am trying to display the result on an LCD but the problem is not the LCD's because I tried its code alone and it worked so the problem is definitely the ADC's registers, here is the full code::
main.c:
#include "config.h"
int result;
void main(){
TRISAbits.TRISA0 = 1; //Set Port A for input
ADCON0 = 0b01000000; //Configuring ADCON0 register
ADCON1 = 0b10000000; //Configuring ADCON1 register
ADCON0bits.ADON = 1; //Turn on ADON bit in ADCON0 register to turn on ADC module
__delay_us(50); //Delay for the capacitor to be charged
ADCON0bits.GO_DONE = 1;
while(ADCON0bits.GO_DONE == 1);
result = ADRESH && ADRESL;
initLCD();
write_character(result);
while(1);
}
config.h:
#include <xc.h>
// #pragma config statements should precede project file includes.
// Use project enums instead of #define for ON and OFF.
// CONFIG
#pragma config FOSC = XT // Oscillator Selection bits (XT oscillator)
#pragma config WDTE = OFF // Watchdog Timer Enable bit (WDT disabled)
#pragma config PWRTE = OFF // Power-up Timer Enable bit (PWRT disabled)
#pragma config BOREN = ON // Brown-out Reset Enable bit (BOR enabled)
#pragma config LVP = ON // Low-Voltage (Single-Supply) In-Circuit Serial Programming Enable bit (RB3/PGM pin has PGM function; low-voltage programming enabled)
#pragma config CPD = OFF // Data EEPROM Memory Code Protection bit (Data EEPROM code protection off)
#pragma config WRT = OFF // Flash Program Memory Write Enable bits (Write protection off; all program memory may be written to by EECON control)
#pragma config CP = OFF // Flash Program Memory Code Protection bit (Code protection off)
#define _XTAL_FREQ 4000000
void send_command(int command);
void write_character(int character);
void enable_blink(void);
void moveto(char b6, char b5, char b4, char b3, char b2, char b1, char b0);
void initLCD(void);
void send_command(int command){
PORTCbits.RC0 = 0;
PORTB = command;
enable_blink();
}
void write_character(int character){
PORTCbits.RC0 = 1;
PORTB = character;
enable_blink();
}
void enable_blink(){
PORTCbits.RC1 = 1;
__delay_ms(10);
PORTCbits.RC1 = 0;
__delay_ms(10);
}
void moveto(char b6, char b5, char b4, char b3, char b2, char b1, char b0){
PORTCbits.RC0 = 0;
PORTBbits.RB7 = 1;
PORTBbits.RB6 = b6;
PORTBbits.RB5 = b5;
PORTBbits.RB4 = b4;
PORTBbits.RB3 = b3;
PORTBbits.RB2 = b2;
PORTBbits.RB1 = b1;
PORTBbits.RB0 = b0;
enable_blink();
}
void initLCD(){
TRISB = 0;
TRISC = 0;
send_command(0x38);
__delay_us(40);
send_command(0x01);
__delay_ms(1.75);
send_command(0x0C);
__delay_us(40);
}

Answer 1

You may have a problem with your result line. Try the following:
result = ( ( ADRESH << 8 ) | ( ADRESL ) )
The double & operator ( && ) is the logical AND. AND will return true ( 1 ) as long as ADRESH and ADRESL are both greater than 1. You want the bitwise OR ( | ) operator to combine two bytes into one int, with the ADRESH as the most-significant-byte and the ADRESL as the least-significant-byte.
Hopefully this works!