[sane-devel] Brother MFC 6800

[Henning Meier-Geinitz]

Hi,

On Mon, Feb 17, 2003 at 10:40:03AM -0500, Fernando Trias wrote:
> I've got a Brother MFC 6800 multi-function printer/scanner/fax and plan
> to do some work on the scanning backend of sane. I already got
> information from Dmitri Katchalov, who has done a lot of work to
> decipher the proprietary protocol. 

Can you give a bit more information? So we could enter it in the SANE
database and it would be displayed on www.mostang.com.

E.g. vendor/product ids, chipset of the scanner part? Any other
scanners with similar chipset?

Is there any imformation on the web yet? I could link to that. Or
shall I at least add your email address so interested users or
developers can find you?

> The USB device provides three interfaces. The first one is the printer
> and the second one is the scanner. 
> 
> However, I'm having problems with sane even looking at the device.
> Perhaps I'm misreading the code, but it seems that there are a few
> problems for this device.
> 
> First, in sanei_usb_init(), the part that enumerates USB devices with
> libusb only looks at the first interface, which in the case of this
> device is the printer (class 7, USB_CLASS_PRINTER), whereas the scanner
> is on interface 2 and is class 0xff (USB_CLASS_VENDOR_SPECIFIC). 

You are right. Nobody needed more than one interface until now so I
haven't implemented that because I couldn't test it anyway.

> Perhaps sane could enumerate the interfaces and test each one?

Please try the attached code. If it doesn't work, please find out, why
it breaks :-)

Happy hacking,
  Henning