/* Main.c file generated by New Project wizard
 *
 * Created:   vie mar 23 2018
 * Processor: PIC18F45K22
 * Compiler:  MPLAB XC8
 */

#include <xc.h>
#define _XTAL_FREQ 8000000

int count = 0;
int apretat0 = 0;
int apretat1 = 0;

void configLEDS(int augmenta) {
   switch (count) {
      case 0:
	 PORTAbits.RA0 = 0;
	 break;

      case 1:
	if (augmenta)
	  PORTAbits.RA0 = 1;
	else
	  PORTAbits.RA1 = 0;
	break;

      case 2:
	if (augmenta)
	  PORTAbits.RA1 = 1;
	else
	  PORTAbits.RA2 = 0;
	break;

      case 3:
	if (augmenta)
	  PORTAbits.RA2 = 1;
	else
	  PORTAbits.RA3 = 0;
	break;

      case 4:
	if (augmenta)
	  PORTAbits.RA3 = 1;
	else
	  PORTAbits.RA4 = 0;
	break;

      case 5:
	if (augmenta)
	  PORTAbits.RA4 = 1;
	break;
   }
}

void main(void) {
    //Config

    //Set as digital port
    ANSELA = 0x00;
    ANSELB = 0x00;

    //Set RA ports as output
    TRISA = 0x00;

    //Set RB0 and RB1 as input
    TRISBbits.RB0 = 1;
    TRISBbits.RB1 = 1;

    while (1) {
        if (PORTBbits.RB1 && !apretat0) {
	   //Augmentar
	   apretat0 = 1;

	   __delay_ms(20);
	   if (count < 5) ++count;
	   configLEDS(1);
	}
	else if (!PORTBbits.RB1 && apretat0 == 1)
	   apretat0 = 0;
	else if (PORTBbits.RB0 && !apretat1) {
	   //Disminuir
	   apretat1 = 1;

	   __delay_ms(20);
	   if (count > 0) --count;
	   configLEDS(0);
	}
	else if (!PORTBbits.RB0 && apretat1 == 1)
	   apretat1 = 0;
    }
}