On Sat, 25 Jun 2005, Helix wrote:

> Dear USB gurus,
> Please I need a little advice about how to start this work.
> Could someone help me please ?
> TIA
> 
> 
> 
> > Hello I have read a couple of interesting Greg Kroah articles on Linux 
> > Journal n.120 and n.122 about creation of a new USB driver with the 
> > reverse engineering of USB visual signal indicator.
> > Now I'd like to do something like that porting a WindowsXP driver to 
> > linux.
> > I have not the sources and I know nothing abouth this device.
> > I am using libusb and I am able to locate the device, but I am puzzled 
> > with the usb_control_msg() function
> > I seached a lot with google but there is not clear documentation and 
> > examples showing the relationship between the results of libsub -v and the 
> > usb_control_msg() function calls.

There is no particular relationship between the results of lsusb -v and 
the usb_control_msg function, except that lsusb uses usb_control_msg 
internally.  That's why you can't find any documentation or examples.  :-)

What other part of usb_control_msg puzzles you?

> > How can I start creating the required entries ?

What entries are you talking about?

Alan Stern



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