view docs/man3/SDL_JoystickOpen.3 @ 715:de0351c47596

Date: Mon, 01 Sep 2003 15:37:52 +0900 From: SUGIMOTO Sadahiro Subject: [SDL] [PATCH] bsd joystick Hi, on FreeBSD systems, I had troubles using a USB joystick with SDL. There are two problems in src/joystick/bsd/SDL_sysjoystick.c . 1. The macro __FreeBSD_version is compared to inappropriate numbers. According to http://www.jp.freebsd.org/cgi/cvsweb.cgi/src/lib/libusbhid/usbhid.h http://www.jp.freebsd.org/cgi/cvsweb.cgi/src/lib/libusbhid/Attic/libusb.h http://www.jp.freebsd.org/cgi/cvsweb.cgi/src/lib/libusbhid/Attic/libusbhid.h the APIs of USB HID are common in each following groups of OS versions, a. 4.1-4.5 b. 4.6-4.8, and 5.0 c. 5.1 2. open() error $ uname -sr FreeBSD 5.1-RELEASE $ ls -l /dev/uhid0 crw-r--r-- 1 root operator 122, 0 8 3 14:06 /dev/uhid0 Then, open("/dev/uhid0", O_RDWR) fails. It seems that this device file does not need to be writable, so O_RDONLY may be suitable.
author Sam Lantinga <slouken@libsdl.org>
date Fri, 05 Sep 2003 15:20:47 +0000
parents e5bc29de3f0a
children 546f7c1eb755
line wrap: on
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.TH "SDL_JoystickOpen" "3" "Tue 11 Sep 2001, 23:00" "SDL" "SDL API Reference" 
.SH "NAME"
SDL_JoystickOpen\- Opens a joystick for use\&.
.SH "SYNOPSIS"
.PP
\fB#include "SDL\&.h"
.sp
\fBSDL_Joystick *\fBSDL_JoystickOpen\fP\fR(\fBint index\fR);
.SH "DESCRIPTION"
.PP
Opens a joystick for use within SDL\&. The \fBindex\fR refers to the N\&'th joystick in the system\&. A joystick must be opened before it game be used\&.
.SH "RETURN VALUE"
.PP
Returns a \fBSDL_Joystick\fR structure on success\&. \fBNULL\fR on failure\&.
.SH "EXAMPLES"
.PP
.PP
.nf
\f(CWSDL_Joystick *joy;
// Check for joystick
if(SDL_NumJoysticks()>0){
  // Open joystick
  joy=SDL_JoystickOpen(0);
  
  if(joy)
  {
    printf("Opened Joystick 0
");
    printf("Name: %s
", SDL_JoystickName(0));
    printf("Number of Axes: %d
", SDL_JoystickNumAxes(joy));
    printf("Number of Buttons: %d
", SDL_JoystickNumButtons(joy));
    printf("Number of Balls: %d
", SDL_JoystickNumBalls(joy));
  }
  else
    printf("Couldn\&'t open Joystick 0
");
  
  // Close if opened
  if(SDL_JoystickOpened(0))
    SDL_JoystickClose(joy);
}\fR
.fi
.PP
.SH "SEE ALSO"
.PP
\fI\fBSDL_JoystickClose\fP\fR
...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:00