[sane-devel] USB probing
Karl Heinz Kremer
Mon, 14 Jan 2002 13:09:05 -0000
You can get the major and minor device numbers from the device file.
The major device number will tell you if it's a SCSI or an USB
Major A <firstname.lastname@example.org> said:
> I need some help from SANE developers:
> Given a device file, how can I determine whether that is a generic
> SCSI or a USB scanner device? It seems that when I try to open a USB
> device file as a SCSI device and probe with INQUIRY, a USB timeout
> will occur. I don't think using a generic SCSI device file with some
> random USB scanner protocol is a good idea either.
> So, is it possible to decide what interface the file stands for, or do
> I have to judge from the filename (example: "usb:/dev/scanner")?
> Major Andras
> e-mail: email@example.com
> www: http://andras.webhop.org/
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