Date: Tue, 30 Mar 1999 11:29:38 +0200 From: Poul-Henning Kamp <phk@critter.freebsd.dk> Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/sys timepps.h src/sys/i386/isa sio.c Message-ID: <23520.922786178@critter.freebsd.dk> In-Reply-To: Your message of "Tue, 30 Mar 1999 01:02:38 -0800." <199903300902.BAA24854@freefall.freebsd.org>
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> Modified files:
> sys/i386/isa sio.c
> Log:
> Add PPS-API support for DCD on serial ports.
I tested this with my
"Conrad DCF-77 Activ Antenna" (641146-62) DMK 79.95
And the following circuit:
DB-25 DCF-77
2 ----------- GND
4 ----------- VCC
8 ---------+- OUT
|
20 -- 10K --+
This is probably the simplest refclock interface I've seen yet.
Now we just need somebody to write a ntpd refclock module which
will grok the PPSAPI interface, any takers ?
--
Poul-Henning Kamp FreeBSD coreteam member
phk@FreeBSD.ORG "Real hackers run -current on their laptop."
FreeBSD -- It will take a long time before progress goes too far!
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