As far as I can tell from looking at the code, it should handle configurations over 0x80, like 0x98 (I assume you meant 0x98 not 98).
Can you send a trace? Edit the javax.usb.properties file to set the trace level to 5 and enable urb-tracing, and run whatever progam you have and redirect the error output to a file, i.e. java (your main class) 2> some_file e.g. java com.ibm.jusb.tools.UsbView 2> /tmp/trace_file then send the trace file. Thanks. On Fri, 8 Apr 2005, Dmitri Kostioukov wrote: >I tried to write a simple program to retreive my topology and it produce the >following error: > >Exception in thread "javax.usb Linux implementation Topology Poller" >java.lang.NullPointerException > at >com.ibm.jusb.os.linux.LinuxUsbServices.setActiveConfigAndInterfaceSettings(LinuxUsbServices.java:332) > at >com.ibm.jusb.os.linux.LinuxUsbServices.updateTopology(LinuxUsbServices.java:225) > at >com.ibm.jusb.os.linux.LinuxUsbServices.access$000(LinuxUsbServices.java:26) > at > com.ibm.jusb.os.linux.LinuxUsbServices$1.run(LinuxUsbServices.java:141) > at java.lang.Thread.run(Thread.java:595) > >Looking at it, I noticed the error was caused by my APC UPS not returning a >valid configuration. The active config number returned was 98. It seems that it >being set correctly, but getAcitiveUsbConfiguration() returns null. This is how >I fixed it for myself: > >UsbConfiguration usbConfig = device.getActiveUsbConfiguration(); >if (usbConfig == null) > return; > >//Iterator interfaces = >device.getActiveUsbConfiguration().getUsbInterfaces().iterator(); >Iterator interfaces = usbConfig.getUsbInterfaces().iterator(); > >I'm not sure what's the best way to deal with it since it's the first day I'm >using javax.usb or anything usb. > > >------------------------------------------------------- >SF email is sponsored by - The IT Product Guide >Read honest & candid reviews on hundreds of IT Products from real users. >Discover which products truly live up to the hype. Start reading now. >http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click >_______________________________________________ >javax-usb-devel mailing list >javax-usb-devel@lists.sourceforge.net >https://lists.sourceforge.net/lists/listinfo/javax-usb-devel > -- Dan Streetman [EMAIL PROTECTED] --------------------- 186,272 miles per second: It isn't just a good idea, it's the law! ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click _______________________________________________ javax-usb-devel mailing list javax-usb-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/javax-usb-devel
