What do the device descriptors look like? You can find them in /proc/bus/usb/devices
Matt
On Sun, Jul 22, 2007 at 01:26:52PM -0400, Ron Gage wrote:
> Ron Gage wrote:
> > Alan Stern wrote:
> >
> >> 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.
> >>
> >>
> >>
> > 4 in down n/a 2.925 VENDOR_ENDPOINT -
> > URB Header (length: 80)
> > SequenceNumber: 4
> > Function: 0019 (VENDOR_ENDPOINT)
>
> > Entirely possible. I'll look into this further.
> >
> >
> The function number (0019 - Vendor Endpoint) appears to be relevant: I
> am trying to send a control message to the device and am getting back
> error -32 (EPIPE). I'm using libusb for the comms right now. Here is
> the snip from my code:
>
>
> handle = usb_open(dev);
> if (!handle)
> {
> printf ("Could not open device.\n");
> }
> else
> {
> char buff[128];
> printf ("Set Configuration returned
> %d\n",usb_set_configuration(handle, 1));
> printf ("Claim Interface returned %d\n",usb_claim_interface
> (handle, 0));
> while (1)
> {
> int r1,r2,x;
> char b1[4096],b2[4096];
> r1 = usb_control_msg(handle, 0,0x81,0x80,0, b1, 128,10000);
> r2 = usb_control_msg(handle, 0,0x81,0x80,0, b2, 128,10000);
>
> Set Configuration and Claim Interface are both returning 0 here, r1 and
> r2 are both being set to -32.
>
> >>> PipeHandle: 00000000
> >>>
> >>> SetupPacket:
> >>> 0000: 00 81 80 00 00 00 00 00
> >>>
> >>>
> Ron Gage
>
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--
Matthew Dharm Home: [EMAIL PROTECTED]
Maintainer, Linux USB Mass Storage Driver
What, are you one of those Microsoft-bashing Linux freaks?
-- Customer to Greg
User Friendly, 2/10/1999
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