Yep. My bad.
Definitely the GPIO port.
Pk
On 28/12/2012, at 5:45 PM, David Taylor
david-tay...@blueyonder.co.uk.invalid wrote:
On 28/12/2012 06:53, Kennedy, Paul wrote:
[]
I use the type 20 driver on my pi, and PPS to the GPIO boards works a
treat with an $RMC or $ZDA string
-Original Message-
From: questions-bounces+p.kennedy=fugro.com...@lists.ntp.org
[mailto:questions-bounces+p.kennedy=fugro.com...@lists.ntp.org] On
Behalf Of David Taylor
Sent: Friday, 28 December 2012 2:33 PM
To: questions@lists.ntp.org
Subject: Re: [ntp:questions] Using PPS
On 28/12/2012
That is one description. Another would be it is a fully functional
linux computer with LAN, HDMI, SVideo, Audio, USB, Serial, and a GPIO
bus with the footprint of a credit card, no moving parts which draws
only 2-3 watts for US$35.
My pi units run various processes such as NTP, web hosting and
Dave,
I believe the answer to your question is 12.5 minutes.
This is the time it takes to receive the full set of 25 almanac frames,
which contains the GPSTime/UTC offset (amongst other things).
http://en.wikipedia.org/wiki/GPS_signals#Almanac
regards
pk
Dave,
ntpd will be in /usr/bin or /usr/sbin. On my pi the /usr/sbin is the
one in use. Just copy across your newly built binary and restart with a
sudo /etc/init.d/ntp restart
you can always kill the ntpd process (with a sudo ps -e | grep ntpd
followed by sudo kill -9 processname), then run
Oct 29 18:45:21 2012
Subject: Re: [ntp:questions] Using Trimble TSIP under Linux
On 29/10/2012 09:44, Kennedy, Paul wrote:
Dave,
ntpd will be in /usr/bin or /usr/sbin. On my pi the /usr/sbin is the
one in use. Just copy across your newly built binary and restart with a
sudo /etc/init.d/ntp
Pedro,
Unruh makes some good points here. Here is a good start point ntp.conf
to get the stats logged at each server...
#@Pedro, this section will log some ASCII stats of the clock quality.
# You can easily plot them in scipy or your tool of choice. This is
your 'baseline' for quality
Forgive me if I am wrong, but this is a very odd request. As far as I
can tell, the request is for the NTP corrections to the system clock to
be used to correct a different clock.
I cannot quite understand how this is of practical use. It is like
diagnosing the faults on your car engine and
...@lists.ntp.org] On
Behalf Of unruh
Sent: Wednesday, 17 October 2012 5:34 PM
To: questions@lists.ntp.org
Subject: Re: [ntp:questions] Using ntpd with custom clock
On 2012-10-17, Rob nom...@example.com wrote:
Kennedy, Paul p.kenn...@fugro.com.au wrote:
Forgive me if I am wrong, but this is a very odd
Ben,
you have not yet stated what OS you are using. I think we need to know
the flavour of windows you are using. If I read the mail thread, I see
you have the following issues...
1. You have a problem with startup being too slow to achieve acceptable
synchronisation.
2. Your windows boxes
Prab,
this is a very ambiguous question, so I shall answer it as briefly as
the question demands.
PPS requires specific hardware and wiring. No PPS does not.
regards
pk
-Original Message-
From: questions-bounces+p.kennedy=fugro.com...@lists.ntp.org
Hi Dave,
good feedback.
I have had the pi running for several days now without a hitch. Due to
my dynamic IP (pending a static ip), you can find the pi and associated
ntp server at:
http://secondthoughts.no-ip.org
I made a small realtime time-series plot and a page displaying ntpq info
so I can
I had a think about this oddball question last night, and decided to
explore it a little further.
Assuming I understand the original question from Harry Bloomfield, it
came to me that the we already have the data Harry is looking for in the
peerstats files, ie we have a data record for each
Ivan,
That tool would be ntpd.
Just add all the servers you want to monitor, restart ntp and then run ntpq -p
to see them all lined up.
You can log the data to peerstats files to a file and make long term plots.
Regards
- Original Message -
From:
Hi Ralph,
NTP is designed to synch your PC clock to UTC. If it is doing its job
correctly, your PC clock time == utc time, so any software displaying
time will do the trick.
If you would like to get hold of NTP's best estimate of time, I would
recommend the ntpq qc tool.
ntpq -c rv
which
Hi Ali,
when you state ' do not synchronize their times with the server', what
do you mean?
if you run 'ntpq -p' on the client side, you should see something like
this
remote refid st t when poll reach delay offset
jitter
I suspect Dave is on the money here. I commonly see this with RS232
data from a multitude of GNSS receivers. GNSS hardware primary purpose
is typically to compute position. We are leveraging off the very handy
clock stability feature inherent of GNSS. It is not uncommon for
firmware developers
Hi Will,
good questions. Before I offer an answer:
1. can you please provide samples of the ntp.conf files you have in
place. It would really assist.
2. can you please provide the version of ntpd you are using?
regards
pk
Questions:
How can I configure a client/peer to always accept a
Exactly so. you can purchase a GPS receiver for well under $100 connect
it to a serial port + pps on any of the pc's and have microsecond
accuracy in a few hours. This 'master' can then serve time to all other
PC's. The systems will then behave for years of unattended use. It is
a far more
pkmaybe you can post your ntp.conf file, so we can take a look.
-Original Message-
From: questions-bounces+p.kennedy=fugro.com...@lists.ntp.org
[mailto:questions-bounces+p.kennedy=fugro.com...@lists.ntp.org] On
Behalf Of E-Mail Sent to this address will be added to the BlackLists
Sent:
Nazim,
If all you need is relative timing, pick a computer as master (a modern
one one you rarely reboot is a good choice), edit the ntp.conf file to
use a series (say 3) of external pool servers. then goto the other 3
machines, edit the ntp.conf file and point them at you master, NOT the
pool
These simply indicate that as you noticed, the Windows port currently
does not include the SHM driver. However, the ?code in refclock_shm.c
once was portable to Windows, and probably can be made so again without
too much effort. You'll need to edit ports\winnt\include\config.h to
#define
Hello,
I have a question on the shared memory driver under windows.
I am trying to use the shared mem driver. I believe I am populating the
shared memory segment correctly.
I have the following entry in the ntp.conf file...
server 127.127.28.3 minpoll 3 maxpoll 3 iburst prefer
fudge
Good morning Sir,
I am not sure what this reply indicates. Does it mean the Windows port
does not / cannot support shared memory drivers? The comment is a
little ambiguous (replaced with what?)
CommitLog-4.1.0(5519,45): * ports/winnt/: Replaced with new code (no
SHM or PALISADE)
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