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<TITLE>sane-devel: Re: [dev] Status of NS LM983x USB support (e.g. Bea</TITLE>
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<META NAME="Author" CONTENT="Adam Polkosnik (adam@m80digital.com)">
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<META NAME="Subject" CONTENT="Re: [dev] Status of NS LM983x USB support (e.g. Bearpaw, Canon 650U, Plustek OpticPro U12)">
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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> Adam Polkosnik (<A HREF="mailto:adam@m80digital.com?Subject=Re:%20[dev]%20Status%20of%20NS%20LM983x%20USB%20support%20(e.g.%20Bearpaw,%20Canon%20650U,%20Plustek%20OpticPro%20U12)&In-Reply-To=<002001c0c139$09f7b820$0201a8c0@fx>"><EM>adam@m80digital.com</EM></A>)<BR>
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<STRONG>Date:</STRONG> Mon Apr 09 2001 - 14:07:08 PDT
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<LI><STRONG>Next message:</STRONG> <A HREF="0095.html">Oliver Schwartz: "[snapscan] Fix for crash in xsane"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0093.html">Massimo Maiurana: "parport and xsane"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0091.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>Next in thread:</STRONG> <A HREF="0106.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>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="0106.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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<HR NOSHADE><P>
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<P>
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<EM>> Hi,
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> On Mon, Apr 09, 2001 at 08:21:32AM -0400, DeeCeeOne wrote:
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</EM><BR>
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<EM>> > Yes indeed, should we go with generic lm983x (meaning whole line
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</EM><BR>
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starting
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<BR>
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<EM>> > >from lm9830) or just the easy way and do only lm9831-lm9833?
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> I think lm9831-33 is enough as the lm9830 is parport, not USB. I
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</EM><BR>
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<EM>> didn't even know that there is a lm9833.
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</EM><BR>
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<P>After looking at hp4200 backend and lm9830 data sheet I find it rather
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<BR>
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cumbersome
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<BR>
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support for the whole family(there is some differences in register mapping
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<BR>
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between lm9830 and the rest of the bunch). lm9831-lm9833 is a piece of cake
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<BR>
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since there are almost no differences aside from 48bit capabilities of
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<BR>
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lm9833. Though we'll need a smart way of detecting lm9833 since the standard
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<BR>
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way (register 0x69 (Version Number) has defined the same values for lm9832
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<BR>
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and lm9833). The differences between 31,32, and 33 are minimal and porting
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<BR>
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hp4200 backend (dropping the parallel interface, and ironing out the
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<BR>
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differences in register mapping would be the simplest way to get a working
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<BR>
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backend in shortest time)
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<BR>
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<P>In the next few days I'll focus on:
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<BR>
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- getting as much info on the scanners using those chips ( all sorts of data
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<BR>
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eg. optical resolution, .ini files ,snoopy logs, CIS/CCD, etc.)
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<BR>
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- adapting hp4200 backend to work for lm983[1-3]
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<BR>
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- detecting lm983x (I got a routine for that, except lm9833 needs to be
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<BR>
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added(though I got an idea on how to tell the difference between 32 and 33))
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<BR>
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- detecting the size of DRAM
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<BR>
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- coarse calibration
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<BR>
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- fine calibration
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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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some
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<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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<P>May I propose an easy approach?
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<BR>
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How does taking those basic values from .ini settings from windoze drivers
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<BR>
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sound?
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<BR>
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<P><P>should I start a project on sourceforge?
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<BR>
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<P>Best regards,
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<BR>
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Adam
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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=<002001c0c139$09f7b820$0201a8c0@fx>">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="0095.html">Oliver Schwartz: "[snapscan] Fix for crash in xsane"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0093.html">Massimo Maiurana: "parport and xsane"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0091.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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<!-- nextthread="start" -->
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0106.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>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="0106.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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<EM>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Mon Apr 09 2001 - 14:18:20 PDT</EM>
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