kopia lustrzana https://gitlab.com/sane-project/website
62 wiersze
2.9 KiB
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62 wiersze
2.9 KiB
HTML
<!-- received="Thu Aug 7 07:45:53 1997 MST" -->
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<!-- sent="Thu, 07 Aug 1997 10:15:05 -0400" -->
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<!-- name="Michael K. Johnson" -->
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<!-- email="johnsonm@redhat.com" -->
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<!-- subject="Re: COOLSCAN II backend" -->
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<!-- id="199708071415.KAA22898@nigel.redhat.com" -->
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<!-- inreplyto="COOLSCAN II backend" -->
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<title>sane-devel: Re: COOLSCAN II backend</title>
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<h1>Re: COOLSCAN II backend</h1>
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<b>Michael K. Johnson</b> (<a href="mailto:johnsonm@redhat.com"><i>johnsonm@redhat.com</i></a>)<br>
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<i>Thu, 07 Aug 1997 10:15:05 -0400</i>
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<p>
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<ul>
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<li> <b>Messages sorted by:</b> <a href="date.html#33">[ date ]</a><a href="index.html#33">[ thread ]</a><a href="subject.html#33">[ subject ]</a><a href="author.html#33">[ author ]</a>
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<li> <b>Next message:</b> <a href="0034.html">David Mosberger-Tang: "MFS-12000SP survey [was: Re: Mustec 1200SP Firmware 1.02 Color Problem]"</a>
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<li> <b>Previous message:</b> <a href="0032.html">Michael K. Johnson: "Re: COOLSCAN II backend"</a>
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</ul>
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<!-- body="start" -->
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Didier Carlier writes:<br>
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<i>>What puzzles me is that all commands are accepted up to the first</i><br>
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<i>>READ, at which point the front panel led flashes rapidly for a couple of</i><br>
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<i>>seconds. This, according to the user's manual indicates an error</i><br>
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<i>>condition, but the return code from the function is ok.</i><br>
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<i>>All further READs also complete successfully, without flashes of</i><br>
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<i>>the led on the front panel and at the end I get a black image (all</i><br>
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<i>>zeroes).</i><br>
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<p>
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I am pretty sure that it is resetting; after that it is not unusual<br>
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for READ to return 0, just as they would if you tried to read without<br>
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starting a scan. That's my guess, anyway.<br>
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<p>
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<i>>I guess there are a lot of places where a 'vendor specific' field of a </i><br>
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<i>>command is required to be set to some value for the scanner, so</i><br>
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<i>>debugging this without the specs (or possibly a trace ?) might be non</i><br>
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<i>>realistic.</i><br>
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<p>
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Even with the specs for UMAX, seeing traces helped me understand the<br>
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specs.<br>
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<p>
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michaelkjohnson<br>
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<p>
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"Ever wonder why the SAME PEOPLE make up ALL the conspiracy theories?"<br>
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<p>
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<p>
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<pre>
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--
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Source code, list archive, and docs: <a href="http://www.azstarnet.com/~axplinux/sane/">http://www.azstarnet.com/~axplinux/sane/</a>
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</pre>
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<!-- body="end" -->
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<p>
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<ul>
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<!-- next="start" -->
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<li> <b>Next message:</b> <a href="0034.html">David Mosberger-Tang: "MFS-12000SP survey [was: Re: Mustec 1200SP Firmware 1.02 Color Problem]"</a>
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<li> <b>Previous message:</b> <a href="0032.html">Michael K. Johnson: "Re: COOLSCAN II backend"</a>
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<!-- nextthread="start" -->
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</ul>
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