Training courses

Kernel and Embedded Linux

Bootlin training courses

Embedded Linux, kernel,
Yocto Project, Buildroot, real-time,
graphics, boot time, debugging...

Bootlin logo

Elixir Cross Referencer

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

	<head>
		<meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
		<title>Dumb Clock</title>
		<link href="scripts/style.css" type="text/css" rel="stylesheet">
	</head>

	<body>
		<h3>Dumb Clock</h3>
<p>Last update:
  <!-- #BeginDate format:En2m -->21-Oct-2010  23:44<!-- #EndDate -->
  UTC</p>
		<hr>
		<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)
</pre>
		<hr>
		<script type="text/javascript" language="javascript" src="scripts/footer.txt"></script>
	</body>

</html>