Re: SetAltInterface() error 31
Xiaofan Chen <[email protected]>
| Newsgroups | gmane.comp.lib.libusb.devel.windows |
|---|---|
| Message-ID | <CAGjSPUCm+KmNHfRtK687yOsbwczcjWUJ5K7Di=8WWbScVMf-HQ@mail.gmail.com> |
On Sun, May 4, 2014 at 9:15 PM, Johny Gudlik <[email protected]> wrote: > > Hello, > I have problem with USB on SAM3S2C (user board) configured as USB device > Vendor Class (it is my first project with USB). I can't set alternate > setting to 1 of the interface 0. Device is opened successfully, but I get > error in function SetAltInterface() - 31 (0x1F) (ERROR_GEN_FAILURE A > device attached to the system is not functioning). > > I'm using libusbK 3.0.7.0., Windows 7. > USB: 2.0, Full speed > > What am I doing wrong? This could be a FW bug. Have you check your firmware codes to see if you are handling the set alternative interface request correctly? You can also use the debug version of libusbK to install the check version of the driver and then use DebugView to capture the debug information and post it to this mailing list. Chk version of libusbK: http://sourceforge.net/projects/libusbk/files/libusbK-release/3.0.7.0/ You can download libusbK-3.0.7.0-bin-chk.7z. 1) Unzip the archive 2) Run the chk version of the inf-wizard to replace the driver with the device plug-in. 3) Plug-out your device 4) Run DebugView in admin mode and enable "Capture Kernel" and "Enable Verbose Kernel Output". 5) Plug-in your device and then run your program http://technet.microsoft.com/en-us/sysinternals/bb896647.aspx 6) Post the message from DebugView. -- Xiaofan ------------------------------------------------------------------------------ Is your legacy SCM system holding you back? Join Perforce May 7 to find out: • 3 signs your SCM is hindering your productivity • Requirements for releasing software faster • Expert tips and advice for migrating your SCM now http://p.sf.net/sfu/perforce