Re: umax 2000U and sane-umax backend

From: Oliver Rauch (oliver.rauch@Wolfsburg.DE)
Date: Sat Feb 05 2000 - 11:40:02 PST

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    Doug Alcorn wrote:

    > I know that the status of USB on Linux is questionable. I have been
    > "working" with the linux-usb group for a while (I quote that because I
    > mainly am doing just testing, not coding). David has the scanner
    > driver so that it recognizes my scanner and attaches itself as the
    > driver for that device. Now for getting sane to work...
    >
    > I downloaded sane 1.0.1 and compiled it OK. I wasn't sure how to
    > setup the etc/sane.d/umax.cof file but guessed anyway. Here is what I
    > put:
    > scsi UMAX * Scanner
    > /dev/usbscanner
    >
    > where
    >
    > crw-rw-rw- 1 root root 180, 48 Jan 20 20:15 /dev/usbscanner
    >
    > This didn't work, xscanimage reports "no devices available". I tried
    > tools/find-scanner and noticed it only checks the /dev/sg? devices and
    > /dev/scanner. So, I symlinked /dev/usbscanner to /dev/scanner and
    > re-ran.
    >
    > find-scanner: checking /dev/scanner... open ok
    > find-scanner: found disk " " at device /dev/scanner
    >
    > This takes a _very_ long time to run. My question is this, "Is this a
    > usb problem or a sane problem?" Can the umax backend be made to
    > recognize this as not a disk but a scanner?
    >
    > If it's any help, here's the output of /proc/bus/usb/devices:
    > P: Vendor=1606 ProdID=0030 Rev= 1.00
    > C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr=100mA
    > I: If#= 0 Alt= 0 #EPs= 3 Cls=00(>ifc ) Sub=00 Prot=00 Driver=usbscanner
    > E: Ad=01(O) Atr=02(Bulk) MxPS= 64 Ivl= 0ms
    > E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl= 0ms
    > E: Ad=83(I) Atr=03(Int.) MxPS= 1 Ivl= 1ms
    >
    > Of course, there isn't anything in /proc/scsi/scsi related to the
    > sanner (only my ide cdrw using ide-scsi).
    >
    > Just for grins: Linux kernel 2.3.42, gcc 2.95.2 (19991024), glibc 2.1.1
    >

    Hi Dough,

    the umax backend is written for umax scsi scanners. It is not tested at all with
    usb scanners. There may be a chance to get it to work with the scsi-via-usb
    driver but I did not do any tests with that.

    I know that there is someone working on an other simple driver that already is
    able to to simple scans with umax a usb scanner (Astra 2200?). I do not know
    more about that.

    If you have sourcecode of that driver I would like to take a look at it to see if
    the usb commands are compatible to the scsi commands.

    Bye
    Oliver

    --
    Homepage:       http://www.wolfsburg.de/~rauch
    sane-umax:      http://www.wolfsburg.de/~rauch/sane/sane-umax.html
    xsane:          http://www.wolfsburg.de/~rauch/sane/sane-xsane.html
    E-Mail:         mailto:Oliver.Rauch@Wolfsburg.DE
    

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