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Deconnection and connection

 
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dju



Joined: 15 Mar 2008
Posts: 14

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PostPosted: Thu May 22, 2008 4:33 pm    Post subject: Deconnection and connection
Hello,

I have some problem with reconnection after a disconnection (in the same execution of my code).

I use WiiRemoteJ 1.3, Linux Mandriva 2008, Avetana, BlueZ.

Here is the code to connect my wiimote:
Code:
try {
            // Search for wiimotes
            WiiRemoteJ.findRemotes(new WiiRemoteDiscoveryListener() {
               // Inner class that allows to handle wiimote discovery

               @Override
               public void findFinished(int numberFound) {
                  // Only one wiimote is expected for calibration
                  if (numberFound != 1) {
                     changeState(FRConnectWiimote.CONNECT_FAILED);
                  }
               }

               @Override
               public void wiiRemoteDiscovered(WiiRemoteDiscoveredEvent evt) {
                  // Create new Wiicam, without calibration for the moment
                  wiiCam = new WiiCam(evt.getWiiRemote());
                                                // Listen wiimote for disconnection
                                                wiiCam.getRemote().addWiiRemoteListener(new WiiRemoteAdapter() {

                                                    @Override
                                                    public void disconnected() {
                                                        changeState(FRConnectWiimote.WIIMOTE_DISCONNECTED);
                                                    }
                                                });
                  // Only one wiimote is expected, so we stop searching
                  WiiRemoteJ.stopFind();
                  changeState(FRConnectWiimote.CONNECTED);
               }

            });
         } catch (IllegalStateException ex) {
            changeState(FRConnectWiimote.CONNECT_FAILED);
            Logger.getLogger(FRConnectWiimote.class.getName()).log(
                  Level.SEVERE, null, ex);
         }


It works fine, but, if I disconnect the wiimote (by pushing power button or removing batteries), and then I try to reconnect any wiimote, wiiRemoteDiscovered() is called, but this exception happens :
Code:
2008-05-22 11:58:44 wiiremotej.WiiRemoteDiscoverer deviceDiscovered
GRAVE: Error discovering device.
java.lang.NullPointerException: Connection is null.
        at javax.bluetooth.RemoteDevice.getRemoteDevice(RemoteDevice.java:247)
        at wiiremotej.WiiRemote.equals(WiiRemote.java:2063)
        at java.util.Vector.indexOf(Vector.java:361)
        at java.util.Vector.indexOf(Vector.java:335)
        at java.util.Vector.removeElement(Vector.java:594)
        at java.util.Vector.remove(Vector.java:745)
        at wiiremotej.WiiRemoteDiscoverer.deviceDiscovered(WiiRemoteDiscoverer.java:66)
        at javax.bluetooth.DiscoveryAgent.deviceDiscovered(DiscoveryAgent.java:284)
        at de.avetana.bluetooth.stack.BlueZ.hciInquiry(Native Method)
        at javax.bluetooth.DiscoveryAgent$1.run(DiscoveryAgent.java:208)
        at edu.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:743)
        at java.lang.Thread.run(Thread.java:619)


I don't think that I need to do something special when WiiRemoteAdapter.disconnect() is called, but can you confirm it.
Or maybe it's a bug from avetana or WRJ.
Can you help me?

Thanks Smile
Juju
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Cha0s
Site Admin


Joined: 17 Jan 2007
Posts: 495

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PostPosted: Thu May 22, 2008 5:12 pm    Post subject:
That's a bug. I believe it is fixed in the next version, which I will try to get out soon (this weekend maybe?). Don't hold your breath, though, as a I have another big project I'm working on, and it has to take priority unfortunately.
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Cha0s
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dju



Joined: 15 Mar 2008
Posts: 14

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PostPosted: Fri May 23, 2008 12:58 pm    Post subject:
Thanks Choas !

It's not so bad because WiiRemote returned by wiiRemoteDiscovered() works fine, but it's not clean.

Ju
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