sane-project-website/old-archive/1999-03/0027.html

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<title>sane-devel: Timing-patches (Mustek 600 II N)</title>
<h1>Timing-patches (Mustek 600 II N)</h1>
<b>Andreas Czechanowski</b> (<a href="mailto:andreas@inspc44b.ins.uni-stuttgart.de"><i>andreas@inspc44b.ins.uni-stuttgart.de</i></a>)<br>
<i>Tue, 2 Mar 1999 17:31:52 +0100 (MET)</i>
<p>
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Hi !<br>
<p>
The lines below are the "official" delays that are to be<br>
introduced into the sanei-code to prevent hanging of the<br>
Mustek 600 II N backend on a fast computer.<br>
<p>
The diff was taken relative to 0.74, but I hope it is still<br>
valid for 1.00+ also. Please include this into the next<br>
official release for SANE. Thanks !<br>
<p>
There is one more patch from Henning Meier-Geinitz &lt;<a href="mailto:henningmg@gmx.de">henningmg@gmx.de</a>&gt;<br>
that I have still not yet tested -- sorry. It is from 14 Apr 1998<br>
and can also be found in the mailing list archive. But it is<br>
possible that it works for some scanners and breaks things for<br>
other ones, so...<br>
<p>
Regards, Andreas.<br>
<p>
------------------------ cut here -------------------------<br>
*** ./sanei/sanei_ab306.c.orig	Tue Mar  3 03:13:25 1998<br>
--- ./sanei/sanei_ab306.c	Fri Aug 14 23:45:38 1998<br>
***************<br>
*** 195,200 ****<br>
--- 195,201 ----<br>
    DBG(3, "ab306_write: waiting for scanner to be ready %02x\n",<br>
        ab306_inb (p, base + 1));<br>
    while ((ab306_inb (p, base + 1) &amp; 0x20) == 0);<br>
+   usleep(10000);<br>
  <br>
    DBG(4, "ab306_write: writing data\n");<br>
    for (i = 0; i &lt; len; ++i)<br>
***************<br>
*** 209,214 ****<br>
--- 210,216 ----<br>
    DBG(3, "ab306_write: waiting for scanner to be NOT ready %02x\n",<br>
        ab306_inb (p, base + 1));<br>
    while ((ab306_inb (p, base + 1) &amp; 0x20) != 0);<br>
+   usleep(10000);<br>
  <br>
    DBG(4, "ab306_write: reading ack\n");<br>
    cksum = ab306_cin (p);<br>
***************<br>
*** 390,395 ****<br>
--- 392,401 ----<br>
    if (dst &amp;&amp; *dst_size &gt; 0)<br>
      {<br>
        int i, cksum = 0;<br>
+ <br>
+       DBG(3, "sanei_ab306_cmd: waiting for scanner to be NOT ready %02x\n",<br>
+ 	ab306_inb (p, p-&gt;base + 1));<br>
+       while ((ab306_inb (p, p-&gt;base + 1) &amp; 0x20) != 0);<br>
  <br>
        for (i = 0; i &lt; *dst_size; i++)<br>
  	{<br>
------------------------ cut here -------------------------<br>
<p>
<pre>
--
Dipl.-Ing. Andreas Czechanowski
<a href="mailto:andreas.czechanowski@ins.uni-stuttgart.de">andreas.czechanowski@ins.uni-stuttgart.de</a>
Institut fuer Netzwerk- und Systemtheorie
Universitaet Stuttgart
<p>
<p>
<pre>
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</pre>
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