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<META NAME="Author" CONTENT="Henning Meier-Geinitz (hmg-ml@gmx.de)">
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<H1>Re: [dev] Status of NS LM983x USB support (e.g. Bearpaw, Canon 650U, Plustek OpticPro U12)</H1>
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<STRONG>From:</STRONG> Henning Meier-Geinitz (<A HREF="mailto:hmg-ml@gmx.de?Subject=Re:%20[dev]%20Status%20of%20NS%20LM983x%20USB%20support%20(e.g.%20Bearpaw,%20Canon%20650U,%20Plustek%20OpticPro%20U12)&In-Reply-To=<20010410195558.D3762@vortex.swb.de>"><EM>hmg-ml@gmx.de</EM></A>)<BR>
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<STRONG>Date:</STRONG> Tue Apr 10 2001 - 10:55:58 PDT
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<LI><STRONG>Next message:</STRONG> <A HREF="0107.html">Henning Meier-Geinitz: "Re: No SANE Devices Found"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0105.html">Henning Meier-Geinitz: "Re: [dev] Status of NS LM983x USB support (e.g. Bearpaw, Canon 650U, Plustek OpticPro U12)"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0094.html">Adam Polkosnik: "Re: [dev] Status of NS LM983x USB support (e.g. Bearpaw, Canon 650U, Plustek OpticPro U12)"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0109.html">Jaeger, Gerhard: "Re: [dev] Status of NS LM983x USB support (e.g. Bearpaw, Canon 650U, Plustek OpticPro U12)"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0100.html">Slawomir Kolasinski: "Re: [dev] Status of NS LM983x USB support (e.g. Bearpaw, Canon 650U, Plustek OpticPro U12)"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0109.html">Jaeger, Gerhard: "Re: [dev] Status of NS LM983x USB support (e.g. Bearpaw, Canon 650U, Plustek OpticPro U12)"</A>
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<HR NOSHADE><P>
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<P>
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Hi,
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<BR>
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<P>On Mon, Apr 09, 2001 at 05:07:08PM -0400, Adam Polkosnik wrote:
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<BR>
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<EM>> After looking at hp4200 backend and lm9830 data sheet I find it rather
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</EM><BR>
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<EM>> cumbersome
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</EM><BR>
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<EM>> support for the whole family(there is some differences in register mapping
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</EM><BR>
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<EM>> between lm9830 and the rest of the bunch). lm9831-lm9833 is a piece of cake
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</EM><BR>
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<EM>> since there are almost no differences aside from 48bit capabilities of
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</EM><BR>
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<EM>> lm9833. Though we'll need a smart way of detecting lm9833 since the standard
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</EM><BR>
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<EM>> way (register 0x69 (Version Number) has defined the same values for lm9832
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</EM><BR>
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<EM>> and lm9833). The differences between 31,32, and 33 are minimal and porting
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</EM><BR>
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<EM>> hp4200 backend (dropping the parallel interface, and ironing out the
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</EM><BR>
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<EM>> differences in register mapping would be the simplest way to get a working
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</EM><BR>
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<EM>> backend in shortest time)
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</EM><BR>
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<P>Ok, so we don't support lm9830. Another reason is that we don't need
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<BR>
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to look for the parport problems (run as root etc.) this way.
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<BR>
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<P><EM>> In the next few days I'll focus on:
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</EM><BR>
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<EM>> - getting as much info on the scanners using those chips ( all sorts of data
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</EM><BR>
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<EM>> eg. optical resolution, .ini files ,snoopy logs, CIS/CCD, etc.)
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</EM><BR>
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<P>Some data:
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<BR>
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Mustek BearPaw 1200: lm9831, 600x1200 dpi, ISO A4, 5 Buttons, 1 LED,
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<BR>
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512 kb Mem (at least that's what the manual says) one
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<BR>
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sensor at the beginning of the scan area, no sensor at the end,
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<BR>
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there is no ini file (at least in the source code package), but
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<BR>
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I can send the c++ file containig the initialisation of the registers
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<BR>
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<BR>
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Mustek BearPaw 2400: lm9832, 1200x1200 dpi, ISO A4, 5 Buttons, 1 LED,
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<BR>
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2048 kb mem (according to the manual this is the "maximum value",
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<BR>
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whatever this means), one sensor at the beginning, no sensor at the
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<BR>
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end of the scan area. No source code but I can try to find some sort
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<BR>
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of ini file if I start Windows sometime. However I think there won't
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<BR>
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be one, see above.
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<BR>
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<P>Both sensors seem to be CCD.
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<BR>
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<P><EM>> - adapting hp4200 backend to work for lm983[1-3]
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</EM><BR>
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<EM>> - detecting lm983x (I got a routine for that, except lm9833 needs to be
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</EM><BR>
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<EM>> added(though I got an idea on how to tell the difference between 32 and 33))
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</EM><BR>
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<P>We probably need a mechanism to tell the backend which scanner is
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<BR>
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connected by keywords in lm983x.conf (or whatever) anyway, e.g.
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<BR>
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<P>type bearpaw-1200
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<BR>
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/dev/usbscanner1
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<BR>
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<P>so it's not strictly necessary to distinguish the subtype of the
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<BR>
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chipset because that can be hardcode for each scanner type.
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<BR>
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<P><EM>> - detecting the size of DRAM
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</EM><BR>
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<EM>> - coarse calibration
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</EM><BR>
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<EM>> - fine calibration
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</EM><BR>
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<P>I looked at this in the Mustek Windows source code months ago but I
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<BR>
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didn't understand much. By the way: If you want to get this source
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<BR>
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code you can have it (and everyone who wants to help with this
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<BR>
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backend) but it's not allowed to publish it by putting it on e.g. a
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<BR>
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web server.
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<BR>
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<P><EM>> > I think after we find out about the existing code we should start writing
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</EM><BR>
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<EM>> some
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</EM><BR>
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<EM>> > kind of mechanism to set the basic values of the chip depending on the
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</EM><BR>
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<EM>> > scanner type.
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> May I propose an easy approach?
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</EM><BR>
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<EM>> How does taking those basic values from .ini settings from windoze drivers
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</EM><BR>
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<EM>> sound?
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</EM><BR>
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<BR>
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Yes, that's ok. I just thought about moving the ini files (if they
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<BR>
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exist) into the code (e.g. as constants in a header file). I don't
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<BR>
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want to have ini files hanging around e.g. in /etc/sane.d/.
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<BR>
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<P><EM>> should I start a project on sourceforge?
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</EM><BR>
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<P>Yes, this would be fine.
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<BR>
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<P>There is at least one existing CVS repository (from Claus-Justus
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<BR>
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Heine), there is a sane-backend. I don't know how far he came,
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<BR>
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however.
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<BR>
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<P>Bye,
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<BR>
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Henning
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<BR>
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<P><P><PRE>
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--
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Source code, list archive, and docs: <A HREF="http://www.mostang.com/sane/">http://www.mostang.com/sane/</A>
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To unsubscribe: echo unsubscribe sane-devel | mail <A HREF="mailto:majordomo@mostang.com?Subject=Re:%20[dev]%20Status%20of%20NS%20LM983x%20USB%20support%20(e.g.%20Bearpaw,%20Canon%20650U,%20Plustek%20OpticPro%20U12)&In-Reply-To=<20010410195558.D3762@vortex.swb.de>">majordomo@mostang.com</A>
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</PRE>
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<!-- next="start" -->
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<LI><STRONG>Next message:</STRONG> <A HREF="0107.html">Henning Meier-Geinitz: "Re: No SANE Devices Found"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0105.html">Henning Meier-Geinitz: "Re: [dev] Status of NS LM983x USB support (e.g. Bearpaw, Canon 650U, Plustek OpticPro U12)"</A>
|
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<LI><STRONG>In reply to:</STRONG> <A HREF="0094.html">Adam Polkosnik: "Re: [dev] Status of NS LM983x USB support (e.g. Bearpaw, Canon 650U, Plustek OpticPro U12)"</A>
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<!-- nextthread="start" -->
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0109.html">Jaeger, Gerhard: "Re: [dev] Status of NS LM983x USB support (e.g. Bearpaw, Canon 650U, Plustek OpticPro U12)"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0100.html">Slawomir Kolasinski: "Re: [dev] Status of NS LM983x USB support (e.g. Bearpaw, Canon 650U, Plustek OpticPro U12)"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0109.html">Jaeger, Gerhard: "Re: [dev] Status of NS LM983x USB support (e.g. Bearpaw, Canon 650U, Plustek OpticPro U12)"</A>
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<EM>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Tue Apr 10 2001 - 10:37:47 PDT</EM>
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