Date: Mon, 24 May 2010 23:42:21 +0200 From: Alexey Shuvaev <shuvaev@physik.uni-wuerzburg.de> To: Mark Terribile <materribile@yahoo.com> Cc: freebsd-ports@freebsd.org Subject: Re: Porting SANE backend 1.0.21 to FreeBSD 7.2 Message-ID: <20100524214221.GA54682@wep4035.physik.uni-wuerzburg.de> In-Reply-To: <473151.10305.qm@web110302.mail.gq1.yahoo.com> References: <alpine.BSF.2.00.1005230953340.7077@wonkity.com> <473151.10305.qm@web110302.mail.gq1.yahoo.com>
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On Sun, May 23, 2010 at 02:00:46PM -0700, Mark Terribile wrote:
> Thanks to help from Warren Block and Lowell Gilbert,
> I now have the offical ported version of sane-backends-1.0.21 running.
> Unfortunately, it's behaving the same way as before,
> apparently not properly recognizing the USB device. It
>
> Does anyone have experience using this?
>
I have zero experience using SANE, but...
> Or better yet, some sense of what it needs from the USB side?
>
I think the right answer is 'nothing'.
> A clue on enabling the internal debugging would also be welcome.
>
> I have added
>
> product CANON CS8800F 0x1901 CanoScan 8800F
>
> to /usr/src/sys/dev/usb/usbdevs. I have also added
>
> {{ USB_VENDOR_CANON, USB_PRODUCT_CANON_CS8800F }, 0 },
>
> to /usr/src/sys/dev/usb/uscanner.c
>
I think this is wrong and may cause all of your problems. I have heard
somewhere that the right way of accessing USB scanners on FreeBSD
is through libusb.
That is, your scanner *should not be recognized* by uscanner driver and
*should not appear* in /dev/.
> When I run scanimage -L I get
> ---------
>
> device `pixma:04A91901' is a CANON Canoscan 8800F multi-function peripheral
> -------
>
> When I run scanimage -d pixma:04A9101 I get
> --------
> scanimage: sane_read: Invalid argument
> --------
>
> Which I have traced to a defaulted fill routine in a table.
>
> scanimage --help gives me a message ending with
> -------
>
> Options specific to device `pixma:04A91901':
> Scan mode:
> --resolution auto||75|150|300|600|1200|2400|4800dpi [75]
> Sets the resolution of the scanned image.
> --mode auto|Color|Gray [Color]
> Selects the scan mode (e.g., lineart, monochrome, or color).
> --source Flatbed|Transparency Unit [Flatbed]
> Selects the scan source (such as a document-feeder).
> --button-controlled[=(yes|no)] [no]
> When enabled, scan process will not start immediately. To proceed,
> press "SCAN" button (for MP150) or "COLOR" button (for other models).
> To cancel, press "GRAY" button.
> Gamma:
> --custom-gamma[=(auto|yes|no)] [yes]
> Determines whether a builtin or a custom gamma-table should be used.
> --gamma-table auto|0..255,...
> Gamma-correction table. In color mode this option equally affects the
> red, green, and blue channels simultaneously (i.e., it is an intensity
> gamma table).
> Geometry:
> -l auto|0..216.069mm [0]
> Top-left x position of scan area.
> -t auto|0..297.011mm [0]
> Top-left y position of scan area.
> -x auto|0..216.069mm [216.069]
> Width of scan-area.
> -y auto|0..297.011mm [297.011]
> Height of scan-area.
> Buttons:
> --button-update
> Update button state
> --button-1 <int> [0]
> Button 1
> --button-2 <int> [0]
> Button 2
>
> Type ``scanimage --help -d DEVICE'' to get list of all options for DEVICE.
>
> List of available devices:
>
> ----------------------------
>
> There is a /dev/usb/uscanner .
>
> I haven't figured out how to turn on the internal debugging system, so my first question to someone who may have ported an earlier version is how to do that.
>
> My second question is whether I have the USB entries right,
> and whether I need to do anything else to make this work.
>
Try reverting all your changes and look how it goes with
stock sane from ports.
> And finally, I ask for any general wisdom or hints in dealing with SANE and SANE with USB devices.
>
HTH,
Alexey.
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