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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>Dumb Clock</title>
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<h3>Dumb Clock</h3>
<p>Last update:
<!-- #BeginDate format:En2m -->21-Oct-2010 23:44<!-- #EndDate -->
UTC</p>
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<h4>Synopsis</h4>
<p>Address: 127.127.33.<i>u</i><br>
Reference ID: <tt>DUMBCLOCK</tt><br>
Driver ID: <tt>DUMBCLOCK</tt><br>
Serial Port: <tt>/dev/dumbclock<i>u</i></tt>; 9600 bps, 8-bits, no parity<br>
Features: <tt>(none)</tt></p>
<h4>Description</h4>
<p>This driver supports a dumb ASCII clock that only emits localtime at a reliable interval. This has no provisions for leap seconds, quality codes, etc. It assumes output in the local time zone, and that the C library mktime()/localtime() routines will correctly convert back and forth between local and UTC.</p>
<p>Most of this code is originally from refclock_wwvb.c with thanks. It has been so mangled that wwvb is not a recognizable ancestor.</p>
<pre>
Timecode format: hh:mm:ssCL
hh:mm:ss - local time
C - \r (carriage return)
L - \n (newline)
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