Hi there,
Hoping for a hint in the right direction. I have the following situation:
1) Third party USB HID device with 1 interrupt IN and 1 interrupt OUT
endpoints. Unknown quality of firmware.
2) Linux Ubuntu 8.10 kernel 2.6.27-11
3) usbhid has been told to ignore the device via quirks, and this has been
confirmed via checking /sys
4) usbmon and Ellisys USB Tracker 110 for bus monitoring
5) Using javax.usb.ri.linux 1.0.2
The problem:
I can get valid communication to my device, however in both usbmon and USB
Tracker traces I see a SetInterface command on the bus *when my program
finishes*. And I have no idea where it is coming from.
- I have grepped the source (jni and java)
- I have single stepped the code
- I am out of ideas.
More than happy to provide debug logging output, but mainly just looking for
a hint of where to look, or what might be triggering this. Other
information:
1) Why is this a problem? After the 'SetInterface' I lose communication,
and my working theory is that the SetInterface resets the toggle, so when I
try to send the next DATA1 packet the device is expecting a DATA0 and
ignores it. The USB Tracker logs support this theory, and if I have sent an
even number of packets before the 'SetInterface' the next run of the program
works fine.
2) It is only when the application finishes that I see the SetInterface
command, I have tried manually closing everything and then triggering gc,
but I cant see it until the program finishes.
3) When I say program, I am running via test cases in Eclipse.
Thanks for any thoughts,
Glen.
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