Backend not detects USB printer

[shermin]

Hi,
I am trying to develop custom backend for my printer using libusb.I tried to get the device id for my printer.I checked the libusb code coming with cups but unable to find the parameters to usb_control_msg.How will we identify the requesttype,request,value and index for this ??
What i understood is that i dont have to send any vendor specific commands for getting the device id.COrrect me if i am wrong.


Shermin

> shermin wrote:
> > Hi,
> > Can you provide some sample backend links for reference.
>
> The CUPS sources include several backends, including a libusb-based
> USB backend you may be able to work with to support your device.
>
> You can also find backends on the links pages on cups.org.
>
> > Shermin
> >
> >> shermin wrote:
> >>> Hi,
> >>> If i write a linux usb driver which detects my printer ,can i use the CUPS standard usb backend ?
> >> No, you need to write your own backend.
> >>
> >>> Shermin
> >>>
> >>>
> >>>> shermin wrote:
> >>>>> Hi,
> >>>>> lsusb "lists" my printer.But I am not getting any directory /dev/usb after my printer is connected.I think USB backend is checking that directory in the code.Also /proc/lib/cups/backend is "not"returning anything.So i am confused where is the problem???
> >>>> lsusb lists all connected USB devices, while the backend only lists
> >>>> printer class devices.  Your device does not report itself as a
> >>>> printer.
> >>>>
> >>>> --
> >>>> ______________________________________________________________________
> >>>> Michael R Sweet                        Senior Printing System Engineer
> >>>>
> >>
> >> --
> >> ______________________________________________________________________
> >> Michael Sweet, Easy Software Products           mike at easysw dot com
> >
>
>
> --
> ______________________________________________________________________
> Michael Sweet, Easy Software Products           mike at easysw dot com