[ntp:questions] WWV audio driver, FreeBSD, Can't seem to get it going
wa6zvp at gmail.com
wa6zvp at gmail.com
Fri May 20 17:12:05 UTC 2005
Folks,
I suspect that interest in drivers other than GPS and PPS are waning,
in fact I have 3 GPS based servers as well, but thought I'd try
something else.
I have a Traconex 1020 WWV receiver used with driver 3 which works
rather well, so I thought I would add the audio driver (36) to the mix.
System is an older Dell workstation with FreeBSD 5.3. The NTP version
is 4.2.0a-20050303, although I've tried others, and even BSD 5.4
The sound 'card' is on the motherboard.
I did:
kldload snd_driver
which resulted in:
May 19 19:57:01 Fuzzball kernel: pcm0: <Intel ICH2 (82801BA)> port
0xdc40-0xdc7f,0xd800-0xd8ff irq 10 at device 31.5 on pci0
May 19 19:57:01 Fuzzball kernel: pcm0: <Analog Devices AD1885 AC97
Codec>
May 19 19:57:01 Fuzzball kernel: pcm0: measured ac97 link rate at 55945
Hz
May 19 20:08:03 Fuzzball ntpd[970]: ntpd 4.2.0a at 1.1191-r Wed May 18
20:59:11 PM
and it created /dev/audio0.0 to which I symlinked ntp.audio.0
ntp.conf contains:
server 127.127.36.0
fudge 127.127.36.0 flag2 1 flag3 1 flag4 1
Here is the last 3 samples from clockstats:
53510 59149.914 127.127.36.0 wwv8 2 91 WV15 0 226 10.1 62698 4880
62698
53510 59149.914 127.127.36.0 wwv8 2 91 WH15 0 248 12.5 443431 4880
443431
53510 59208.430 127.127.36.0 wwv8 2 111 WV15 0 361 13.2 24318 2480
24318
53510 59208.430 127.127.36.0 wwv8 2 111 WH15 0 264 15.7 35736 2480
35736
53510 59266.946 127.127.36.0 wwv8 2 91 WV15 0 298 9.5 28666 80
28666
53510 59266.946 127.127.36.0 wwv8 2 91 WH15 0 254 12.0 239884 80
239884
The AGC does show action and responds to removing/inserting audio.
However, the tone filters never seem to get a grasp on things, like
perhaps the output of the A/D is garbage?
I know that Dave Mills has said that this driver is no longer
maintainable, at least by him, but I found references from last year
that it did work under FreeBSD.
Does anyone have any ideas on where I should go from here?
Roger
More information about the questions
mailing list