Re: Claim Interface 0

> 4. usb_claim_interface(handle,0);  <-Error
> 

What is the exact error code? What does usb_strerror() return?

> 5. usb_bulk_write(handle,endpoint,data,size,timeout); <-Error (I think
> because of 4. )
> 
> ...
> 
> 
> 
> 
> 
> -----Ursprüngliche Nachricht-----
> Von: libusb-win32-devel-admin <at> lists.sourceforge.net
> [mailto:libusb-win32-devel-admin <at> lists.sourceforge.net] Im Auftrag von
> Stephan Meyer
> Gesendet: Freitag, 7. Oktober 2005 09:21
> An: libusb-win32-devel <at> lists.sourceforge.net
> Betreff: Re: [Libusb-win32-devel] Claim Interface 0
> 
> Did you select a valid configuration (through usb_set_configuration())
> before trying to claim the interface?
> 
> Stephan
> 
> 
> > Hello, 
> > 
> > I have a problem. I want to make bulk read and write commands to an 
> > usb device. The device has only one interface with two bulk 
> > endpoints (one in and one out). 
> > My problem is, that claim_interface() says always, Interface 0 is 
> > not a valid interface. 
> > 
> > I am able to send and receive control messages and descriptors. I 
> > only need bulk transfers to be completely happy...  
> > 
> > Why I can't claim Interface 0? Is it possible that it is a bug in 
> > claim_interface() ? 
> > 
> > Thank you for your help...
> 
> 
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