Re: [Libusb-win32-devel] lots of bugs (Carl Kenner)

[Carl K. <car...@gm...>]

My program suddenly stopped working.
Can anyone tell me what error number 116 is?
(My program isn't written in C)

On 15/08/07, Carl Kenner <car...@gm...> wrote:
> I'm using the latest version you can download.
>
> I reckon I'm going to try this:
>  Open the device
>  try reading the feature report
>  if that fails then
>    call usb_setconfiguration
>    try reading the feature report again
>  end if
>
>  every frame try reading the input report using usb control messages
>
>  close the device
>
> But on this vista computer, reading the feature report without setting
> the configuration always fails. Hopefully with the filter driver,
> reading the feature report will work the first time, so it will never
> call usb_setconfiguration and thus never lock up the computer forcing
> them to reboot. But I haven't tested that yet.
>
> On 15/08/07, Xiaofan Chen <xia...@gm...> wrote:
> > On 8/15/07, Carl Kenner <car...@gm...> wrote:
> > > OK, I tried it without setting the configuration or claiming the
> > > interface, and it didn't work on my Vista computer with the Device
> > > Driver. I then tried it without claiming the interface, but still
> > > setting the configuration and it worked.
> >
> > Kind of strange. Which version of libusb are you using?
> > Still I have no Vista...
> >
> > > The problem is that setting the configuration is the call that crashed
> > > it on the filter driver on XP.
> > >
> > > So is there some way of knowing beforehand whether a call to
> > > SetConfiguration is going to freeze my program and force the user to
> > > reboot, or not?
> >
> > I am not so sure here. But the HID driver can be the issue. That
> > is why I asked Stephan to add the native Windows HID backend
> > to libusb-win32.
> >
> > When I first started with libusb-win32 with PICkit 2, the same BSOD
> > happened. It turned out that I could not use the libusb-win32 filter
> > driver since it is an HID device but has a second configuration.
> >
> > Xiaofan
> >
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