On Mon, 16 Apr 2007, John Wojnaroski wrote:
> OK, attached is a log report. Not all that conversant in analyzing
> the log. about the only item I note is the order of the last two bytes
> defining the packet size; SnoopyPro shows 0300 under Windows and usbmon
> shows 0003 under Linux for the control msg.
You are referring to URB #9 in the Windows log, right? It shows:
SetupPacket
0000 21 09 00 02 00 00 03 00
TransferBuffer: 0x00000003 (3) length
0000: 02 ff ff
> Significant?? Or just a formatting artifact?
>
> > de9ab1c0 1992901010 S Co:003:00 s 21 09 0002 0000 0003 3 = 020202
> > de9ab1c0 1992905882 C Co:003:00 0 3 >
It is indeed significant. The Windows program has wValue set to 0x0200
and your Linux program has it set to 0x0002. That could be the source of
all your problems right there.
Alan Stern
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