examples/nes.c

/*
 * nes.c:
 *	Test program for an old NES controller connected to the Pi.
 *
 * Copyright (c) 2012-2013 Gordon Henderson. <projects@drogon.net>
 ***********************************************************************
 * This file is part of wiringPi:
 *	https://projects.drogon.net/raspberry-pi/wiringpi/
 *
 *    wiringPi is free software: you can redistribute it and/or modify
 *    it under the terms of the GNU Lesser General Public License as published by
 *    the Free Software Foundation, either version 3 of the License, or
 *    (at your option) any later version.
 *
 *    wiringPi is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU Lesser General Public License for more details.
 *
 *    You should have received a copy of the GNU Lesser General Public License
 *    along with wiringPi.  If not, see <http://www.gnu.org/licenses/>.
 ***********************************************************************
 */

#include <stdio.h>
#include <errno.h>
#include <string.h>

#include <wiringPi.h>
#include <piNes.h>

#define	BLANK	"|      "

int main ()
{
  int joystick ;
  unsigned int buttons ;

  if (wiringPiSetup () == -1)
  {
    fprintf (stdout, "oops: %s\n", strerror (errno)) ;
    return 1 ;
  }

  if ((joystick = setupNesJoystick (2, 1, 0)) == -1)
  {
    fprintf (stdout, "Unable to setup joystick\n") ;
    return 1 ;
  }

  for (;;)
  {
    buttons = readNesJoystick (joystick) ;

    if ((buttons & NES_UP)     != 0) printf ("|  UP  " ) ; else printf (BLANK) ;
    if ((buttons & NES_DOWN)   != 0) printf ("| DOWN " ) ; else printf (BLANK) ;
    if ((buttons & NES_LEFT)   != 0) printf ("| LEFT " ) ; else printf (BLANK) ;
    if ((buttons & NES_RIGHT)  != 0) printf ("|RIGHT " ) ; else printf (BLANK) ;
    if ((buttons & NES_SELECT) != 0) printf ("|SELECT" ) ; else printf (BLANK) ;
    if ((buttons & NES_START)  != 0) printf ("|START " ) ; else printf (BLANK) ;
    if ((buttons & NES_A)      != 0) printf ("|  A   " ) ; else printf (BLANK) ;
    if ((buttons & NES_B)      != 0) printf ("|  B   " ) ; else printf (BLANK) ;
    printf ("|\n") ;
  }

  return 0 ;
}