<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:8px"><div style="" class=""><span style="" class="">Dear Stef,</span></div><div class="" style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;"><br style="" class=""><span style="" class=""></span></div><div class="" style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;"><span style="" class="">After a summer brake I got again some time to work on the driver for canoscan 8400F. In order to simplify my task I have disconnected transparency<br style="" class=""></span></div><div class="" style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;"><span style="" class="">unit while taking logs. This made logs more clear. Here are my findings:</span></div><div
class="" style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;"><br style="" class=""><span style="" class=""></span></div><div class="" style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;"><span style="" class="">1) Sensor profiles: For all scan modes only two different sensor profiles are used:</span></div><div class="" style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;"><span style="" class="">/* scan 1600, 1200 dpi, average_bit=0, DPISET=4800<br style="" class=""> CKSEL=1 for all modes */<br style="" class="">{CCD_CS8400F, 1600, 14400, 0x1ff, 0x0, 0x24924, 5168, 0,0x2a,0x0,0x0,0x0,0x0000,0x00,0x01,0x0000,0x0000,<br style="" class=""> {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x33, 0x0c, 0x11, 0x2a, 0x30, 0x00, 0x00, 0x84},<br style=""
class=""> {0x0b,0x0e,0x11,0x02,0x05,0x08,0x63,0x00,0x40,0x00,0x00,0x0000,0x82},<br style="" class="">},<br style="" class=""> /* scan 800, 600 dpi, average_bit=0, DPISET=4800<br style="" class=""> scan 300 dpi, average_bit=1, DPISET=2400<br style="" class=""> scan 100, 75 dpi, average_bit=1, DPISET=1200<br style="" class=""> CKSEL=3 for all modes*/<br style="" class="">{CCD_CS8400F, 800, 7200, 0xe3f, 0x0, 0x1b6db, 5168, 0,0x2a,0x0,0x0,0x0,0x0000,0x01,0x02,0x0000,0x0000,<br style="" class=""> {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x33, 0x0c, 0x13, 0x2a, 0x30, 0x00, 0x00, 0x84},<br style="" class=""> {0x0d,0x10,0x01,0x04,0x07,0x0a,0x6b,0x00,0x40,0x00,0x00,0x0000,0x85},<br style="" class=""> },</span></div><div class="" style="color: rgb(0, 0,
0); font-size: 8px; background-color: transparent; font-style: normal;"><span style="" class="">Inside the comments you will find values of relevant registers (DPIHW=4800 for all modes). When I tried to use SANE to make a scan at 100 dpi, the actual</span></div><div class="" style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;"><span style="" class="">scan was performed with ~ 70 dpi. According to the SANE logs, SANE was using dpiset=400 while the canon driver uses </span><span style="" class="">DPISET=1200, </span><span style="" class="">average_bit=1...</span></div><div class="" style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;"><span style="" class="">To be honest I am sucked with this puzzle.</span></div><div class="" style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;"><br style="" class=""><span style=""
class=""></span></div><div class="" style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;"><span style="" class="">2) Motor tables:</span></div><div class="" style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;"><span style="" class=""> I found that for each movement scanner uses two tables. In most cases one table is short, 512 bytes, another is long 2024 bytes. During the test scans the scan head was making three types of movements:</span></div><div class="" style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;"><span style="" class=""> I) from parking position to the beginning of the scan</span></div><div class="" style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;"><span style="" class=""> II) scanning</span></div><div class="" style="color: rgb(0, 0, 0);
font-size: 8px; background-color: transparent; font-style: normal;"><span style="" class=""> III) return to parking position</span></div><div class="" style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;"><span style="" class=""> I have identified all tables for all modes. I will not send them in this mail since they are large. Here is the summary:</span></div><div style="" class=""> * Tables of type III are same same for all modes: 75-100, 300, 600-800, 1200-1600 dpi<br style="" class=""> * Tables of type II are same for 600-800, 1200 dpi</div><div style="" class=""> * All tables same for: 75 and 100 dpi; 600 and 800 dpi; 1200 and 1600 dpi.</div><div style="" class=""> * For resolutions of 75 and 100 dpi all tables of type I and II are short (512 bytes)</div><div style="" class="">The interesting finding is that
the tables for different movements are written to different addresses:</div><div style="" class="">* Type I:<br style="" class=""></div><div style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;" class=""> genesys_write_register(0x5b,0x40) length 2048<br style="" class=""> genesys_write_register(0x5c,0x00)<br style="" class=""> </div><div style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;" class=""> genesys_write_register(0x5b,0x50) length 512<br style="" class=""> genesys_write_register(0x5c,0x00)<br style="" class=""></div><div style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;" class="">* Type II<br style="" class="">
genesys_write_register(0x5b,0x48) length 2048<br style="" class=""> genesys_write_register(0x5c,0x00)</div><div style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;" class=""><br style="" class=""> genesys_write_register(0x5b,0x58) length 512<br style="" class=""> genesys_write_register(0x5c,0x00)<br style="" class=""></div><div style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;" class=""><br style="" class=""></div><div style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;" class="">Type III<br style="" class=""> genesys_write_register(0x5b,0x58) length 2048<br style=""
class=""> genesys_write_register(0x5c,0x00)</div><div style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;" class=""><br style="" class=""> genesys_write_register(0x5b,0x40) length 512<br style="" class=""> genesys_write_register(0x5c,0x00)</div><div style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;" class=""><br style="" class=""></div><div style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;" class="">At this point I have collected some information but it is not clear how to implement it into the genesys backend. How to implement different motor</div><div style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;" class="">tables for two-table movement? I see implementation
for the g4050. There are few tables defined for it. But it is not clear which of them will be</div><div style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;" class="">selected for each movement...</div><div style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;" class=""><br></div><div style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;" class="">Please provide me more information or help me with the implementation.</div><div style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;" class=""><br></div><div style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;" class="">Thank you in advance,</div><div style="color: rgb(0, 0, 0); font-size: 8px; background-color: transparent; font-style: normal;" class="">Best regards,</div><div style="color: rgb(0, 0,
0); font-size: 8px; background-color: transparent; font-style: normal;" class="">Myroslav<br style="" class=""></div> <div class="" style="font-family: HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 8px;"> <div class="" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div style="" class="" dir="ltr"> <hr style="" class="" size="1"> <font style="" class="" size="2" face="Arial"> <b style="" class=""><span class="" style="font-weight:bold;">From:</span></b> Stef <stef.dev@free.fr><br style="" class=""> <b style="" class=""><span class="" style="font-weight: bold;">To:</span></b> Myroslav Kavatsyuk <m.kavatsyuk@yahoo.com>; "sane-devel@lists.alioth.debian.org" <sane-devel@lists.alioth.debian.org> <br style="" class=""> <b style="" class=""><span class="" style="font-weight: bold;">Sent:</span></b>
Wednesday, June 25, 2014 6:41 AM<br style="" class=""> <b style="" class=""><span class="" style="font-weight: bold;">Subject:</span></b> Re: CANOSCAN 8400F<br style="" class=""> </font> </div> <div style="" class=""><br style="" class=""><div style="" class="" id="yiv3221448796"><div style="" class="">
<div style="" class="" id="yiv3221448796yqt06990"><div style="" class="">On 23/06/2014 15:51, Myroslav Kavatsyuk
wrote:<br style="" class="" clear="none">
</div>
<blockquote style="" class="" type="cite">
<div class="" style="color:#000;background-color:#fff;font-family:HelveticaNeue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:8pt;">
<div class="" style="">Dear Stef,</div>
<div class="" style=""><br class="" style="" clear="none">
</div>
<div class="" style="color:rgb(0, 0, 0);font-size:10.6667px;font-family:serif;background-color:transparent;font-style:normal;">Thanks a lot for your suggestions. I have studied
genesys documentation, and indeed it is helpful :)</div>
<div class="" style="color:rgb(0, 0, 0);font-size:10.6667px;font-family:serif;background-color:transparent;font-style:normal;"><br class="" style="" clear="none">
</div>
<div class="" style="color:rgb(0, 0, 0);font-size:10.6667px;font-family:serif;background-color:transparent;font-style:normal;">I have collected usblogs for all useful scan modes.
In case you would like to look at them, you can</div>
<div class="" style="color:rgb(0, 0, 0);font-size:10.6667px;font-family:serif;background-color:transparent;font-style:normal;">download processed (with your script) logs at: <a rel="nofollow" shape="rect" class="" style="" target="_blank" href="https://www.dropbox.com/sh/6je6fz2tsjy0r6x/AAA1yr9P6RrlEWaqk5lWjLNSa">CS8400F</a></div>
<div class="" id="yiv3221448796enhancrCard_0" style="width:450px;font-family:'Georgia', 'Times', 'Times New Roman', 'serif';">
<table class="" style="width:450px;height:60px;margin-top:5px;margin-bottom:5px;display:block;" cellpadding="0" cellspacing="0"><tbody class="" style=""><tr class="" style=""><td colspan="6" rowspan="1" class="" style="height:1px;background-color:#e5e5e5;"><br style="" class="" clear="none">
</td></tr><tr class="" style=""><td colspan="1" rowspan="2" class="" style="width:1px;background-color:#e5e5e5;"><br style="" class="" clear="none">
</td><td colspan="1" rowspan="2" class="" style="vertical-align:middle;width:58px;height:58px;background-color:#000000;">
<div class="" style="width:58px;" align="center"><a rel="nofollow" shape="rect" class="" target="_blank" href="https://www.dropbox.com/sh/6je6fz2tsjy0r6x/AAA1yr9P6RrlEWaqk5lWjLNSa" style="text-decoration:none;color:#000000;"><img class="" alt="image" src="https://www.dropbox.com/static/images/icons128/folder_dropbox.png" style="display:block;margin:auto;" width="58" height="58"></a></div>
</td><td colspan="1" rowspan="2" class="" style="width:1px;background-color:#e5e5e5;"><br style="" class="" clear="none">
</td><td colspan="2" rowspan="1" class="" style="width:100%;vertical-align:middle;font-family:'Georgia', 'Times', 'Times New Roman', 'serif';">
<div class="" style="line-height:16.5px;background-color:#ffffff;height:34px;width:389px;">
<div class="" style="word-wrap:break-word;padding:5px 20px 0px 9px;"><span class="" style=""></span><span class="" style=""></span><a rel="nofollow" shape="rect" class="" target="_blank" href="https://www.dropbox.com/sh/6je6fz2tsjy0r6x/AAA1yr9P6RrlEWaqk5lWjLNSa" style="text-decoration:none;color:#000000;"><span class="" style="margin:0;font-weight:normal;font-size:13px;line-height:18px;max-height:19px;color:#000000;overflow:hidden;display:inline-block;">CS8400F</span></a>
<div class="" style="font-size:11px;line-height:15px;color:#999999;max-height:16px;font-family:'Arial', 'Helvetica Neue', 'Helvetica', 'sans-serif';overflow:hidden;">Shared with Dropbox</div>
</div>
</div>
</td><td colspan="1" rowspan="2" class="" style="width:1px;background-color:#e5e5e5;"><br style="" class="" clear="none">
</td></tr><tr class="" style=""><td colspan="1" rowspan="1" class="" style="width:100%;vertical-align:middle;font-family:'Arial', 'Helvetica Neue', 'Helvetica', 'sans-serif';">
<div class="" style="font-size:0pt;padding:1px 20px 1px 10px;"><a rel="nofollow" shape="rect" class="" target="_blank" href="https://www.dropbox.com/sh/6je6fz2tsjy0r6x/AAA1yr9P6RrlEWaqk5lWjLNSa" style="color:black;text-decoration:none;cursor:pointer;"><span class="" style="display:inline-block;line-height:11px;max-width:289px;min-width:229px;overflow:hidden;max-height:13px;"><span class="" style="vertical-align:middle;font-size:9px;line-height:11px;color:#999999;">View on <span class="" style="font-weight:bold;">www.dropbox.com</span></span></span></a></div>
</td><td colspan="1" rowspan="1" class="" style="vertical-align:middle;width:100px;font-family:'Arial', 'Helvetica Neue', 'Helvetica', 'sans-serif';">
<div class="" style="padding:2px 20px 4px 0px;max-width:100px;min-width:80px;overflow:hidden;text-align:right;line-height:11px;max-height:13px;font-size:0pt;"><span class="" style="vertical-align:middle;font-size:9px;line-height:11px;color:#999999;">Preview by Yahoo</span></div>
</td></tr><tr class="" style=""><td colspan="6" rowspan="1" class="" style="height:1px;background-color:#e5e5e5;"><br style="" class="" clear="none">
</td></tr></tbody></table>
</div>
<div class="" style="color:rgb(0, 0, 0);font-size:10.6667px;font-family:serif;background-color:transparent;font-style:normal;"> </div>
<div class="" style="color:rgb(0, 0, 0);font-size:10.6667px;font-family:serif;background-color:transparent;font-style:normal;">I made summary of all possible sensor profiles. For
each profile I wrote at which "dpi" setting of windows driver</div>
<div class="" style="color:rgb(0, 0, 0);font-size:10.6667px;font-family:serif;background-color:transparent;font-style:normal;"> it is used, value of the DPISET register, value
of the AVEENB bit (average over few pixels or drop pixels):<br class="" style="" clear="none">
</div>
<div class="" style="color:rgb(0, 0, 0);font-size:10.6667px;font-family:serif;background-color:transparent;font-style:normal;"> /*<br class="" style="" clear="none">
{CCD_CS8400F, dpi, 22000, 0x0, 0xff, 0x0, 5168,
0,0x2a,0x 0, 0x 0, 0x 0, -1, 0x07, 0x08, -1, -1,<br class="" style="" clear="none">
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3b, 0x0c, 0x10,
0x2a, 0x30, 0x00, 0x00, 0x9a},<br class="" style="" clear="none">
{0x01, 0x04, 0x07, 0x0a, 0x0d, 0x10, 0x1b, 0x00, 0x40,
0x00, 0x00, -1, 0x88},<br class="" style="" clear="none">
}, // Scanner init, DPISET=600; AVEENB=1<br class="" style="" clear="none">
{CCD_CS8400F, dpi, 10800, 0xe3f, 0x0, 0x1b6db, 5168,
0,0x2a,0x 0, 0x 0, 0x 0, -1, 0x01, 0x02, -1, -1,<br class="" style="" clear="none">
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x33, 0x0c, 0x13,
0x2a, 0x30, 0x00, 0x00, 0x84, },<br class="" style="" clear="none">
{0x0d,0x10,0x01,0x04,0x07,0x0a,0x6b,0x00,0x40,0x00,0x00,-1,0x88,},<br class="" style="" clear="none">
}, // Scanner init DPISET=2400, most probably TPU,
AVEENB=1<br class="" style="" clear="none">
{CCD_CS8400F, dpi, 7200, 0xe3f, 0x0, 0x1b6db, 5168,
0,-1,0xfffffffffffffeff, 0xfffffffffffffeff,
0xfffffffffffffeff, -1, 0x01, 0x02, -1, -1,<br class="" style="" clear="none">
{-1, -1, -1, -1, -1, -1, 0x33, 0x0c, 0x13, -1, 0x30,
-1, 0x00, 0x84},<br class="" style="" clear="none">
{0x0d,0x10,0x01,0x04,0x07,0x0a,0x6b,-1,0x40,0x00,0x00,-1,0x88},<br class="" style="" clear="none">
}, // 600 dpi DPISET=4800 (last value 0x88 ->
0x85); 400,300 dpi DPISET=2400, last number 0x85; 100 dpi
DPISET=1200<br class="" style="" clear="none">
{CCD_CS8400F, dpi, 7200, 0xe3f, 0x0, 0x1b6db, 5168,
0,0x2a,0x 0, 0x 0, 0x 0, -1, 0x01, 0x02, -1, -1,<br class="" style="" clear="none">
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x33, 0x0c, 0x13,
0x2a, 0x30, 0x00, 0x00, 0x84},<br class="" style="" clear="none">
{0x0d, 0x10, 0x01, 0x04, 0x07, 0x0a, 0x6b, 0x00, 0x40,
0x00, 0x00, -1, 0x85},<br class="" style="" clear="none">
}, // 800 dpi, DPISET=4800<br class="" style="" clear="none">
{CCD_CS8400F, dpi, 14400, 0x1ff, 0x0, 0x24924, 5168,
0,0x2a,0x 0, 0x 0, 0x 0, -1, 0x00, 0x01, -1, -1,<br class="" style="" clear="none">
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x33, 0x0c, 0x11,
0x2a, 0x30, 0x00, 0x00, 0x84},<br class="" style="" clear="none">
{0x0b, 0x0e, 0x11, 0x02, 0x05, 0x08, 0x63, 0x00, 0x40,
0x00, 0x00, -1, 0x82},<br class="" style="" clear="none">
}, // 1200, 1600 dpi; DPISET=4800<br class="" style="" clear="none">
{CCD_CS8400F, dpi, 28800, 0x0, 0x0, 0x24924, 5168,
0,0x2a,0x 0, 0x 0, 0x 0, -1, 0x09, 0x0a, -1, -1,<br class="" style="" clear="none">
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x33, 0x0c, 0x10,
0x2a, 0x30, 0x00, 0x20, 0x84, },<br class="" style="" clear="none">
{0x02, 0x05, 0x08, 0x0b, 0x0e, 0x11, 0x1b, 0x00, 0x40,
0x00, 0x00, -1, 0x88},<br class="" style="" clear="none">
}, // 3200,2400 scan; DPISET=4800 (last value can be
0x88 -> 0x81)</div>
<div class="" style="color:rgb(0, 0, 0);font-size:10.6667px;font-family:serif;background-color:transparent;font-style:normal;"> //</div>
<div class="" style="color:rgb(0, 0, 0);font-size:10.6667px;font-family:serif;background-color:transparent;font-style:normal;"> // AVEENB=1 for dpi from 100-400
range; AVEENB=0 for dpi 600-3200 range</div>
<div class="" style="color:rgb(0, 0, 0);font-size:10.6667px;font-family:serif;background-color:transparent;font-style:normal;"> */</div>
<div class="" style="color:rgb(0, 0, 0);font-size:10.6667px;font-family:serif;background-color:transparent;font-style:normal;"> This values are almost ready to be plugged into
the code. I have to replace at some places "-1" values. What
is strange for me</div>
<div class="" style="color:rgb(0, 0, 0);font-size:10.6667px;font-family:serif;background-color:transparent;font-style:normal;"> that DPISET values are very high with respect to
dpi setting reported by driver.</div>
<div class="" style="color:rgb(0, 0, 0);font-size:10.6667px;font-family:serif;background-color:transparent;font-style:normal;"><br class="" style="" clear="none">
</div>
<div class="" style="color:rgb(0, 0, 0);font-size:10.6667px;font-family:serif;background-color:transparent;font-style:normal;">My questions are:</div>
<div class="" style="color:rgb(0, 0, 0);font-size:10.6667px;font-family:serif;background-color:transparent;font-style:normal;">1) what does the second field (dpi) means in the
scanner profile? Is this value of the DPISET register?</div>
<div class="" style="color:rgb(0, 0, 0);font-size:10.6667px;font-family:serif;background-color:transparent;font-style:normal;">2) I did not manage to follow where actually sane
decides which profile to use, which DPISET value to select?</div>
<div class="" style="color:rgb(0, 0, 0);font-size:10.6667px;font-family:serif;background-color:transparent;font-style:normal;"> In other words how to make sure that the correct
combination will be selected for scan if I pass resolution of
dpi to scanimage.</div>
<div class="" style="color:rgb(0, 0, 0);font-size:10.6667px;font-family:serif;background-color:transparent;font-style:normal;">3) From the logs I do not see how to extract motor
tables (like one in the genesys_gl843.h at line 678). In the
logs</div>
<div class="" style="color:rgb(0, 0, 0);font-size:10.6667px;font-family:serif;background-color:transparent;font-style:normal;">I have seen setting up of the MTRTBL bit for
downloading table
(genesys_write_register(0x5b,0x01)genesys_write_register(0x5c,0x00))</div>
<div class="" style="color:rgb(0, 0, 0);font-size:10.6667px;font-family:serif;background-color:transparent;font-style:normal;">This statements are followed by data. Is that data a
motor table?</div>
<div class="" style="color:rgb(0, 0, 0);font-size:10.6667px;font-family:serif;background-color:transparent;font-style:normal;"><br style="" class="" clear="none">
</div>
<div class="" style="color:rgb(0, 0, 0);font-size:10.6667px;font-family:serif;background-color:transparent;font-style:normal;">Best regards,</div>
<div class="" style="color:rgb(0, 0, 0);font-size:10.6667px;font-family:serif;background-color:transparent;font-style:normal;">Myroslav<br class="" style="" clear="none">
</div>
<div class="" style="color:rgb(0, 0, 0);font-size:10.6667px;font-family:serif;background-color:transparent;font-style:normal;"> </div>
</div>
</blockquote></div>
Hello,<br style="" class="" clear="none">
<br style="" class="" clear="none">
1) the dpi value is the effective maximum dpi for the scan.
Scan's dpi is the result of DPISET, DPIHW and CKSET. In the simplest
case it is the hardware DPI set for the recorded scan.<br style="" class="" clear="none">
<br style="" class="" clear="none">
2) for a given target resolution, exposure is chosen first
(gl843_compute_exposure which uses get_sensor_profile) by selecting
the sensor profile which has the lowest dpi value above or equal to
the target dpi.<br style="" class="" clear="none">
<br style="" class="" clear="none">
3) data can be written to the GL843 by many slightly different
ways that the decoding scripts may not handle, so look for bulk
writes mostly shorter than 2048 bytes, which turned (little-endian)
to 16 bit values give a decreasing slope with end values becoming
closer. In such a situation, I look at semi-processed log generated
by the 'partial.sh' script. After writes to 5b/5c registers like you
noticed.<br style="" class="" clear="none">
<br style="" class="" clear="none">
Example from a 4400F log:<br style="" class="" clear="none">
URB 2992 control 0x40 0x04 0x82 0x00 len 8 wrote 0x01 0x00
0x82 0x00 0xfe 0x01 0x00 0x00 <br style="" class="" clear="none">
URB 2993 bulk_out len 510 wrote 0x00 0x60 0x00 0x60 0xd4 0x3c
0x32 0x2e 0x29 0x26 0xdb 0x20 0x1e 0x1d 0x41 0x1a 0x00 0x18 0x2e
0x16 0xaf 0x14 0x61 0x13 0x49 0x12 0x5b 0x11 0x84 0x10 0xc0 0x0f
0x18 0x0f 0x7d 0x0e 0xf6 0x0d 0x71 0x0d 0x04 0x0d 0x97 0x0c 0x36
0x0c 0xd6 0x0b 0x81 0x0b 0x36 0x0b 0xe9 0x0a 0xa5 0x0a 0x65 0x0a
0x27 0x0a 0xec 0x09 0xb4 0x09 0x82 0x09 0x4f 0x09 0x21 0x09 0xf4
0x08 0xca 0x08 0xa1 0x08 0x79 0x08 0x53 0x08 0x31 0x08 0x0d 0x08
0xed 0x07 0xce 0x07 0xae 0x07 0x91 0x07 0x74 0x07 0x5b 0x07 0x40
0x07 0x27 0x07 0x0d 0x07 0xf7 0x06 0xdf 0x06 0xc9 0x06 0xb3 0x06
0x9e 0x06 0x8b 0x06 0x77 0x06 0x64 0x06 0x52 0x06 0x40 0x06 0x2e
0x06 0x1d 0x06 0x0c 0x06 0xfb 0x05 0xec 0x05 0xdc 0x05 0xce 0x05
0xbf 0x05 0xb1 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf
0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05
0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf
0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05
0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf
0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05
0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf
0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05
0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf
0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05
0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf
0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05
0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf
0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05
0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf
0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05
0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf
0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05
0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf
0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05
0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf
0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05
0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf
0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05
0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf
0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05
0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf
0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05
0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 0xaf 0x05 <br style="" class="" clear="none">
URB 2994 control 0x40 0x04 0x83 0x00 len 2 wrote 0x5b 0x00 <br style="" class="" clear="none">
<br style="" class="" clear="none">
which gives 0x6000, 0x6000, 0x3cd4, 0x2e32, ...., 0x05ce, 0x05bc,
0x05b1, 0x05af, 0x05af .... 0x05af<br style="" class="" clear="none">
<br style="" class="" clear="none">
Regards,<br style="" class="" clear="none">
Stef<br style="" class="" clear="none">
</div></div><br style="" class=""><br style="" class=""></div> </div> </div> </div></body></html>