Tricky USB device.
dgilbert at dclg.ca
Fri Apr 8 10:17:06 PDT 2005
>>>>> "Maksim" == Maksim Yevmenkin <maksim.yevmenkin at savvis.net> writes:
>>>> ... I don't know if this is hindering me. The usbhid* commands
>>>> aren't particularly helpful. The port udesc_dump seems only to
>>>> work on ugen devices ... and ugen doesn't pop up for this device.
Maksim> how about getting usb hid descriptor, parsing and dumping it?
Maksim> check out libusbhid - man usbhid(3). it might be that all
>> you Maksim> need to do is to create hid report and send it to the
Maksim> device. libusbhid(3) will help you with that.
>> Tried that. The usb_get_report_desc() returns NULL. This is not
>> a complicated device --- it's not even technically a "human
>> interface" device.
Maksim> fine, so i presume usbhidctl(1) does not work on the device
Maksim> too. why did they made look like usb hid device then?
Yeah... it appears to fail. I have no idea, but the guy at the
company seemed to imply that he was just using a "standard" chip to
drive the USB logic, so it may be a function of that.
Maksim> another way is to hack /sys/dev/usd/uhid.c and specifically
Maksim> ignore (usb vendor id, usb product id) for the device in the
Maksim> MATCH routine. something like
Maksim> if (uaa->vendor == XXXX && uaa->product == XXXX) return
Hrm. I thought that there might be some general bogon list, but that
will certainly do.
|David Gilbert, Independent Contractor. | Two things can only be |
|Mail: dave at daveg.ca | equal if and only if they |
|http://daveg.ca | are precisely opposite. |
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