embedaddon/ntp/html/drivers/driver37.html - view

File: [ELWIX - Embedded LightWeight unIX -] / embedaddon / ntp / html / drivers / driver37.html
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Tue May 29 12:08:38 2012 UTC (12 years, 1 month ago) by misho
CVS tags: MAIN, HEAD

Initial revision

1: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 2: 3: <html> 4: 5: <head> 6: <meta http-equiv="content-type" content="text/html;charset=iso-8859-1"> 7: <title>Forum Graphic GPS Dating station</title> 8: <link href="scripts/style.css" type="text/css" rel="stylesheet"> 9: </head> 10: 11: <body> 12: <h3>Forum Graphic GPS Dating station</h3> 13: <hr> 14: <h4>Synopsis</h4> 15: <p>Address: 127.127.37.<i>u</i><br> 16: Reference ID: <tt>GPS</tt><br> 17: Driver ID: <tt>GPS</tt><br> 18: Parallel Port: <tt>/dev/fgclock<i>u</i></tt></p> 19: <h4>Description</h4> 20: <p>This driver supports the Forum Graphic GPS Dating station sold by <a href="http://www.emr.fr/gpsclock.html">EMR company</a>.</p> 21: <p>Unfortunately sometime FG GPS start continues reporting of the same date. The only way to fix this problem is GPS power cycling and ntpd restart after GPS power-up.</p> 22: <p>After Jan,10 2000 my FG GPS unit start send a wrong answer after 10:00am till 11:00am. It repeat hour value in result string twice. I wroite a small code to avoid such problem. Unfortunately I have no second FG GPS unit to evaluate this problem. Please let me know if your GPS has no problems after Y2K.</p> 23: <p></p> 24: <h4>Monitor Data</h4> 25: <p>Each timecode is written to the <tt>clockstats</tt> file in the format <tt>YYYY YD HH MI SS</tt>.</p> 26: <h4>Fudge Factors</h4> 27: <dl> 28: <dt><tt>time1 <i>time</i></tt> 29: <dd>Specifies the time offset calibration factor, in seconds and fraction, with default 0.0. 30: <dt><tt>time2 <i>time</i></tt> 31: <dd>Not used by this driver. 32: <dt><tt>stratum <i>number</i></tt> 33: <dd>Specifies the driver stratum, in decimal from 0 to 15, with default 0. 34: <dt><tt>refid <i>string</i></tt> 35: <dd>Specifies the driver reference identifier, an ASCII string from one to four characters, with default <tt>FG</tt>. 36: <dt><tt>flag1 0 | 1</tt> 37: <dd>Not used by this driver. 38: <dt><tt>flag2 0 | 1</tt> 39: <dd>Not used by this driver. 40: <dt><tt>flag3 0 | 1</tt> 41: <dd>Not used by this driver. 42: <dt><tt>flag4 0 | 1</tt> 43: <dd>Not used by this driver. 44: </dl> 45: <hr> 46: <address>Dmitry Smirnov (das@amt.ru)</address> 47: <hr> 48: <script type="text/javascript" language="javascript" src="scripts/footer.txt"></script> 49: </body> 50: 51: </html>