On Sat, 25 Sep 2004, Phil Dibowitz wrote:

> Interestingly, my phone (Sony Ericsson T637) uses Obex. I connect to it 
> using a USB cable that is in fact a USB->Serial Converter (which uses 
> the pl2303 driver), and then using multisync (multisync.sf.net) which 
> talks obex in userspace.
> 
> So I'm assuming this driver won't work for such phones, but would work 
> for phones that don't need the USB->serial conversion? I'm actually 

Yes, exactly.

> quite surprised my phone needed a usb->serial converter (something all 
> the Ericsson's seem to need) -- but I wondered if the nokias do -- they 
> just have a standard USB device port on the phone?! If so, that would 
> answer the question of "why not just do this in userspace..."

Yes, the latest ones have just the standard usb port. They provide a 
CDC ACM modem interface (for internet access over GPRS), and CDC OBEX 
interfaces.
 
> Which leads me to my next question: something using the openobex 
> libraries should just be able to point themselves at the /dev obex 
> device files, and be off to the races?

Well, that's how it works with my patch. But a better way to do this is to 
add USB transport support to openobex (not the USB-to-serial), so that 
openobex would use libusb to do USB bus scanning and communication.

-- 
Alexander

Homepage: http://www.sensi.org/~ak/




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