/*******************************************************************
 * Processor:       PIC18F4520
 * Compiler:        MPLAB C18
 *
 * This file does the following....
 *
 * Author (Your name here)
 ********************************************************************/

/** Header Files ***************************************************/
#include <p18f4520.h>
#include <stdio.h>
#include <adc.h>

/** Configuration Bits *********************************************/
#pragma config OSC = INTIO67
#pragma config WDT = OFF
#pragma config LVP = OFF
#pragma config BOREN = OFF
#pragma config XINST = OFF

/** Define Constants Here ******************************************/
#define SAMPLE 100
#define PRESSED 0


/** Local Function Prototypes **************************************/
void sampleFunction(void);

/** Global Variables ***********************************************/
int sampleVariable = 0;

/*******************************************************************
 * Function:        void main(void)
 ********************************************************************/
#pragma code

void main(void) {
    // Set the clock to 4 MHz
    OSCCONbits.IRCF2 = 1;
    OSCCONbits.IRCF1 = 1;
    OSCCONbits.IRCF0 = 0;

    // Pin IO Setup
    OpenADC(ADC_FOSC_8 & ADC_RIGHT_JUST & ADC_12_TAD,
            ADC_CH0 & ADC_INT_OFF & ADC_REF_VDD_VSS,
            0x0B); // Four analog pins
    TRISA = 0xFF; // All of PORTA input
    TRISB = 0xFF; // All of PORTB input
    TRISC = 0x00; // All of PORTC output
    TRISD = 0x00; // All of PORTD output
    PORTC = 0x00; // Turn off all 8 Port C outputs

    // This area happens once
    // Good for initializing and things that need to happen once

    while (1) {
        if (PORTBbits.RB0 == PRESSED & PORTBbits.RB1 == PRESSED) {
            PORTCbits.RC0 = 1;
            PORTCbits.RC1 = 1;
            PORTCbits.RC2 = 1;
            PORTCbits.RC3 = 1;
        } else {
            PORTCbits.RC0 = 0;
            PORTCbits.RC1 = 0;
            PORTCbits.RC2 = 0;
            PORTCbits.RC3 = 0;
        }
        if (PORTBbits.RB2 == PRESSED & PORTBbits.RB3 == PRESSED) {
            PORTCbits.RC4 = 1;
            PORTCbits.RC5 = 1;
            PORTCbits.RC6 = 1;
            PORTCbits.RC7 = 1;
        } else {
            PORTCbits.RC4 = 0;
            PORTCbits.RC5 = 0;
            PORTCbits.RC6 = 0;
            PORTCbits.RC7 = 0;
        }

        // This area loops forever
    }
}

/*******************************************************************
 * Additional Helper Functions
 ********************************************************************/

/*******************************************************************
 * Function:			void sample(void)
 * Input Variables:	none
 * Output Return:	none
 * Overview:			Use a comment block like this before functions
 ********************************************************************/
void sampleFunction() {
    // Some function that does a specific task
}