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<TITLE>sane-devel: Re: astra 3400</TITLE>
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<META NAME="Author" CONTENT="Henning Meier-Geinitz (hmg-ml@gmx.de)">
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<META NAME="Subject" CONTENT="Re: astra 3400">
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<H1>Re: astra 3400</H1>
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<!-- received="Sun Dec 31 03:44:32 2000" -->
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<!-- name="Henning Meier-Geinitz" -->
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<STRONG>From:</STRONG> Henning Meier-Geinitz (<A HREF="mailto:hmg-ml@gmx.de?Subject=Re:%20astra%203400&In-Reply-To=<20001231130126.A8199@vortex.swb.de>"><EM>hmg-ml@gmx.de</EM></A>)<BR>
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<STRONG>Date:</STRONG> Sun Dec 31 2000 - 04:01:26 PST
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<P>
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<LI><STRONG>Next message:</STRONG> <A HREF="0329.html">Nick Lamb: "Re: Installation and man page of find-scanner"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0327.html">Monty Taylor: "HP PhotoSmart S20"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0323.html">rm: "Re: astra 3400"</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 Sat, Dec 30, 2000 at 07:06:54PM -0500, rm wrote:
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<BR>
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<EM>> i've done some hacking around with it, and it is indeed LM9832 based. the
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</EM><BR>
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<P>I started looking at the Mustek Bearpaw 1200, which has a LM9831.
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<BR>
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You know <A HREF="http://www.geocities.com/SiliconValley/Mouse/5403/">http://www.geocities.com/SiliconValley/Mouse/5403/</A> ?
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<BR>
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If you have questions, you can try to ask the chip developers directly.
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<BR>
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Maybe you can get the development software this way.
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<BR>
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<P><EM>> usb format isn't described in the datasheet (it says it's in the dev
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</EM><BR>
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<EM>> software, but i couldn't find this), but it seems pretty simple from
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</EM><BR>
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<EM>> looking at the usb snoop output.
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</EM><BR>
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<P><EM>> the msg format is a bulkmsg send of 4 bytes in the shortest
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</EM><BR>
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<EM>> case.
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> nWrite (0 or 1), register address, ???, # of bytes
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> the 2nd byte is possibly the high byte of the number of bytes to be
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</EM><BR>
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<EM>> read/written.
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</EM><BR>
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<P>That's right. This is the information for the 9831:
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<BR>
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Byte 0: read (1) or write (0). Use incremental write/read: add 2.
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<BR>
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Byte 1: register number
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<BR>
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Byte 2: bytes to write/read MSB
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<BR>
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Byte 3: bytes to write/read LSB
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<BR>
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<P><EM>> if it's a read, you follow up by reading the blk endpoint, or if it's a
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</EM><BR>
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<EM>> write you just put the rest of it in the blkmsg.
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</EM><BR>
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<P>Correct.
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<BR>
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<P><EM>> the scanner dependent stuff is in the .ini file that is distributed with
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</EM><BR>
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<EM>> the scanner. and the lm983x bits should be similar to the hp backend.
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</EM><BR>
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<EM>>
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</EM><BR>
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<EM>> anyway, just thought i'd let you all know the results in case anyone was
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</EM><BR>
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<EM>> interested.
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</EM><BR>
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<P>I'm interested. Do you want to write a backend? Otherwise I will start
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<BR>
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to write one for the Mustek Bearpaw soon.
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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><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:%20astra%203400&In-Reply-To=<20001231130126.A8199@vortex.swb.de>">majordomo@mostang.com</A>
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</PRE>
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<LI><STRONG>Next message:</STRONG> <A HREF="0329.html">Nick Lamb: "Re: Installation and man page of find-scanner"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0323.html">rm: "Re: astra 3400"</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>Sun Dec 31 2000 - 03:47:28 PST</EM>
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