linux-kernel - Re: [PATCH 1/1] LinuxPPS: Pulse per Second support for Linux

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Message-ID: <20070221101644.GH3945@ucw.cz>
Date:	Wed, 21 Feb 2007 10:16:45 +0000
From:	Pavel Machek <pavel@....cz>
To:	Rodolfo Giometti <giometti@...eenne.com>
Cc:	linux-kernel@...r.kernel.org, linuxpps@...enneenne.com
Subject: Re: [PATCH 1/1] LinuxPPS: Pulse per Second support for Linux

Hi!

> @@ -0,0 +1,206 @@
> +
> +			PPS - Pulse Per Second
> +			----------------------
> +
> +(C) Copyright 2007 Rodolfo Giometti <giometti@...eenne.com>

If you add copyright, add license, too.


> +PROCFS support
> +--------------
> +
> +If PROCFS support is enabled a new directory "/proc/pps" is created:
> +
> +    $ ls /proc/pps/
> +    00       01       sources
> +
> +The file "sources" holds a brief description of all PPS sources
> +defined in the system:
> +
> +    $ cat /proc/pps/sources 
> +    id    mode		echo	name			path
> +    ----  ------	----	----------------	----------------
> +    00    1133		no	serial0			/dev/ttyS0
> +    01    1133		no	serial1			/dev/ttyS1
> +
> +The other entries are directories that hold one or two files according
> +to the ability of the associated source to provide "assert" and
> +"clear" timestamps:
> +
> +    $ ls /proc/pps/00 
> +    assert		  clear
> +
> +Inside each "assert" and "clear" file you can find the timestamp and a
> +sequence number:
> +
> +    $ cat /proc/pps/00/assert 
> +    1170026870.983207967 #8

No new /proc files, please.
							Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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