thanks, figured it out a while ago and now everything's working as a charm.
one slight off topic question: I start at the virtual usb hub and iterate my
way down while searching for the device i'm looking for... with the result
that the whole /dev/bus/usb folder must be set to 775 + ownership for the
group that executes the java program... is there a better way to do this? if
i'm just looking for one single device?
thanks,
On Tue, Nov 30, 2010 at 5:38 PM, Dan Streetman <ddstr...@ieee.org> wrote:
> Sorry, I forgot to cc the mailing list.
>
> Also, you should be able to use asyncSubmit() in a sync manner with:
>
> usbScannerPipe.asyncSubmit(currentDui);
> currentDui.waitUntilComplete();
>
>
> On Tue, Nov 30, 2010 at 11:34 AM, Dan Streetman <ddstr...@ieee.org> wrote:
>
>> You need to use asyncSubmit() instead of syncSubmit().
>>
>> On Thu, Nov 4, 2010 at 9:53 AM, Klaus Gradinger <
>> klaus.gradin...@gmail.com> wrote:
>>
>>> Hello,
>>>
>>> I've been running into the following Problem: I'm communicating using a
>>> USB Handheld Barcode Scanner (USB HID Keyboard Device). Everything is fine,
>>> i've opened the IN Endpoint using the UsbPipe and access it the following
>>> way:
>>>
>>> currentDui = new DefaultUsbIrp(buffer);
>>> currentDui = new DefaultUsbIrp(buffer);
>>> currentDui.setAcceptShortPacket(true);
>>>
>>> usbScannerPipe.syncSubmit(currentDui);
>>>
>>> I receive the data i'm expecting and everything works fine UNTIL i want
>>> to abort and cancel everything:
>>>
>>> usbScannerPipe.abortAllSubmissions();
>>> usbScannerPipe.close();
>>> usbScannerPipe = null;
>>> usbScannerInterface.release();
>>> usbScannerInterface = null;
>>>
>>> The problem is that syncSubmit immediately synchronizes using
>>> "submitLock" (UsbPipeImp). After that the whole thing just keeps blocking
>>> while waiting for data. When i call abortAllSubmissions from another Thread,
>>> it too locks on "submitLock", waiting for the submitSync method to release
>>> this lock. IF i scan another Barcode, the syncSubmit method returns and
>>> everything is fine, otherwise it's a perfect deadlock.
>>>
>>> What's the correct work-flow here? how can i cancel everything pending
>>> and close the pipe and interface?
>>>
>>> i'm using Ubuntu 10.04, and java-usb 1.0.1
>>>
>>> Thanks in advance
>>> Klaus Gradinger
>>>
>>>
>>>
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