Two system setup. System 1 has both an internal and external GPS. I want this
system to use the external GPS exclusively. System 2 has an internal GPS, but I
want it to use the external GPS connected to system 1. This system's gpsd
instance should connect to the gpsd instance on system 1 that is using the
external GPS. The external GPS is much better quality than the internal GPS
units, so I want its data instead of the others.
System 1 GPSD started using:
sudo /usr/sbin/gpsd -N -G -n -D 2 -F /var/run/gpsd.sock /dev/ttyUSB0
System 2 GPSD started using:
sudo /usr/sbin/gpsd -N -n -D 2 -F /var/run/gpsd.sock gpsd://10.10.50.100:2947
-F and specifying the device is how we've been running gpsd for years, never
had an issue before. Why -F, not sure exactly why, but I've seen similar
command format used on other vendors hardware that uses gpsd. We're specifying
the device because we have multiple GPS units present and want to make sure the
right one is used.
cgps and gpsmon were both used to try and view the data. cgps was provided with
the gpsd-clients package and gpsmon was provided with the gpsd package and is
referenced on: http://www.catb.org/gpsd/
Both applications present this message on System 2 when started:
gpsd:CLIENT: => client(0):
{"class":"VERSION","release":"3.15","rev":"3.15-2build1","proto_major":3,"proto_minor":11}\x0d\x0a
gpsd:CLIENT: <= client(0): ?WATCH={"raw":2,"pps":true}\x0d\x0a
gpsd:CLIENT: => client(0): {"class":"DEVICES","devices":[{"class":"DEVICE","path":"gpsd://10.10.50.100:2947","driver":"JSON slave
driver","activated":"2018-06-01T11:37:30.829Z"}]}\x0d\x0a{"class":"WATCH","enable":true,"json":false,"nmea":false,"raw":2,"scaled":false,"timing":false,"split24":false,"pps":true}\x0d\x0a
gpsd:CLIENT: => client(0): {"class":"ERROR","message":"Unrecognized request
''"}\x0d\x0a
And on System 1 as a result of both applications on System 2 sending a JSON
watch command:
gpsd:CLIENT: <= client(0): ?\x0a
gpsd:ERROR: ERROR response: {"class":"ERROR","message":"Unrecognized request
''"}\x0d\x0a
gpsd:CLIENT: => client(0): {"class":"ERROR","message":"Unrecognized request
''"}\x0d\x0a
gpsd:CLIENT: <= client(0): WATCH={"enable":true,"json":true};\x0a
gpsd:CLIENT: => client(0): =
This output is very similar to what was discussed in this post:
https://lists.gnu.org/archive/html/gpsd-users/2017-06/msg00009.html
Thanks,
Josh Q
-----Original Message-----
From: gpsd-users [mailto:address@hidden On Behalf Of Gary E. Miller
Sent: Tuesday, June 5, 2018 8:13 PM
To: address@hidden
Subject: Re: [gpsd-users] GPSD Client Connected to Remote GPSD - Unrecognized request
"" when running gpsmon
Yo Joshua!
On Tue, 5 Jun 2018 18:46:13 -0400
"Joshua Quesenberry" <address@hidden> wrote:
As mentioned in the original post, I've tried using gpsmon and cgps,
I'm confused, and I have not bothered to keep copies of your earlier posts.
Can you resend your complete setup in one message?
both of which were installed fresh using apt-get.
gpsd does not supply or support anything that needs apt-get. We can only
support our tar balls and git. You are not using our software so it is hard to
support you.
The command being
run on the client is:
sudo /usr/sbin/gpsd -N -n -D 2 -F /var/run/gpsd.sock
gpsd://10.10.50.100:2947
So isn't this the same situation as mentioned in the other post I
listed? What you called master/slave?
Also, can you answer the question I have asked before? Why are you using -F
and a remote device on the slave? Why are you using -F and a device on the
master? Those are very uncommon configurations that lead to problems.
New question: why would you ever use master/slave? It buys you nothing that
other configurations can't do better. It has never worked well as no one uses
it.
RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
address@hidden Tel:+1 541 382 8588
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