Alan Stern wrote: > On Sun, 22 Jul 2007, Ron Gage wrote: > > >> OK, I'll be the first to admit that doing USB work is a new area for me >> and I might have some terminology conflated. That said, I can only go >> by what is in front of my eyes. >> >> That said, I am using the data as reported by SnoopyPro. >> >> 4 in down n/a 2.925 VENDOR_ENDPOINT - >> URB Header (length: 80) >> SequenceNumber: 4 >> Function: 0019 (VENDOR_ENDPOINT) >> > > Umm. I'm not familiar with USB programming under Windows, so I can't > say what (if anything) the "Function: 0019" means. It's probably > something specific to the Windows USB API and not meaningful in other > operating systems. > > Entirely possible. I'll look into this further.
>> PipeHandle: 00000000 >> >> SetupPacket: >> 0000: 00 81 80 00 00 00 00 00 >> > > You have failed to realize something important about SnoopyPro: The > Setup packet values displayed in the "down" section for an URB are > garbage. Only the values displayed in the "up" section are correct. > Don't ask me why; I didn't write SnoopyPro. > > I can honestly say that I have never heard this before. I wonder if anyone has sent bug reports in to the author of SnoopyPro. >> bmRequestType: 00 >> DIR: Host-To-Device >> TYPE: Standard >> RECIPIENT: Device >> bRequest: 81 >> unknown! >> >> No TransferBuffer >> >> >> This is what I am trying to recreate as this particular packet is sent >> multiple times. >> > > It's the wrong thing to recreate. Look at what the "up" section says > and recreate that instead. You can use usb_control_msg(). > > I am now confused. From what I can tell, every "up" message in the capture appears to be from device to host. As an example, the "GET_DESCRIPTOR_FROM_DEVICE" packet is a "down" message, it's response packet is an "up" packet, and the data in that packet seems to support the notion of "up" packets being from device to host. Ron Gage > Alan Stern > > ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Linux-usb-users@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
