Re: [pyusb-users] Getting string descriptor

[Stefano Di M. <ste...@gm...>]

Sorry, I forgot to post the currently fixed version of libusbx:

https://github.com/libusbx/libusbx/zipball/master

I attach the latest dll, too, otherwise you have to build it yourselves.

Best regards
Stefano

-------- Original-Nachricht --------
> Datum: Tue, 30 Oct 2012 09:50:57 +0100
> Von: "Stefano Di Martino" <ste...@gm...>
> An: pyu...@li...
> Betreff: Re: [pyusb-users] Getting string descriptor

> Hi,
> libusbx had indeed an issue, but now, it is fixed. I cant get without
> problems an string descriptor from a HID device, but his works only in C. With
> pyUSB I get the same error: "[Errno None] Overflow".
> Maybe pyUSB has a bug, too?
> 
> This is the way how I retrieve the string descriptor:
> 
>     def get_manufactorer_name(self):
>         if self.device.iManufacturer > 0:
>             string = usb.util.get_string(self.device, 254,
> self.device.iManufacturer)
>             return string
>         
>         return ""
> 
> I can't post any debug messages, because I don't know how to activate them
> in pyUSB. I tried this, but it doesn't work:
> 
> os.environ['PYUSB_DEBUG_LEVEL'] = 'debug'
> 
> Best regards
> Stefano
> 
> -------- Original-Nachricht --------
> > Datum: Sun, 28 Oct 2012 13:10:18 +0100
> > Von: Tormod Volden <lis...@gm...>
> > An: pyu...@li...
> > Betreff: Re: [pyusb-users] Getting string descriptor
> 
> > On Fri, Oct 26, 2012 at 3:41 PM, Stefano Di Martino wrote:
> > > The value of desc.iManufacturer is 1. In my last mail (which have to
> be
> > approved by the moderator, because it has an attachment(my project)) I
> > wrote 2, what was wrong read. device.iManufacturer does not exsists.
> > >
> > 
> > device.iManufacturer was from your python example. Never mind, if it
> > works with libusb my question was not important (and the value seems
> > fine anyway). It seems like an issue with libusbx or underlying
> > drivers (WinUSB?), so please follow up on your thread on
> > libusbx-devel. Did you try using zadig.exe to choose driver for your
> > device, instead of an .inf file? For exactly what driver was your .inf
> > file?
> > 
> > Regards,
> > Tormod
> > 
> >
> ------------------------------------------------------------------------------
> > WINDOWS 8 is here. 
> > Millions of people.  Your app in 30 days.
> > Visit The Windows 8 Center at Sourceforge for all your go to resources.
> > http://windows8center.sourceforge.net/
> > join-generation-app-and-make-money-coding-fast/
> > _______________________________________________
> > pyusb-users mailing list
> > pyu...@li...
> > https://lists.sourceforge.net/lists/listinfo/pyusb-users
> 
> ------------------------------------------------------------------------------
> Everyone hates slow websites. So do we.
> Make your web apps faster with AppDynamics
> Download AppDynamics Lite for free today:
> http://p.sf.net/sfu/appdyn_sfd2d_oct
> _______________________________________________
> pyusb-users mailing list
> pyu...@li...
> https://lists.sourceforge.net/lists/listinfo/pyusb-users