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Re: GPSD - NTRIP Client

From: Greg Troxel
Subject: Re: GPSD - NTRIP Client
Date: Thu, 09 Jan 2020 15:13:35 -0500
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (berkeley-unix)

<address@hidden> writes:

> GPSD (Version 3.17 )  was installed from app-get 

That is old.  gpsd is now at 3.20.  Please update and retry; there are
not that many people here and while most try to be helpful, no one is
interested in dealing with code older than the latest formal release.
(Or build from git master.)

> When I have tried using the "ntrip" command line option as a part of gpsd,
> gpsd reports the following error:
> gpsd:ERROR: ntrip stream connect error -2 in req probe

Once you update, use tppdump to see what happens, and also
ktrace/strace/struss or whatever your OS has for syscall tracing.  And
run gpsd with debugging.

You may want to use tcpdump with -s1500 writing to a file, and then -A
on that, once it connects if it doesn't work, so you can see the
mountpoint table.  You can also tcpdump what the ucenter stuff does.

> gpsd:ERROR: initial GPS device
> ntrip://UUUUUUUUU:address@hidden:8082/NYPF open failed

so that didn't work :-)

I hope your username and password does not contain either an @ or :.  If
not, change them and retry.   Or update to master and fix the code that
finds the hostname part of the ntrip URL to use the right-most @.

> Here is the NTRIP listing for the NYS CORS network:

Your mail client has horribly munged the formatting.  [repaired]

> MountPoint    Single Site             Satellites      Type            Message 
> Type    Port    ProductName                 
> NYPF          Pittsford - NYPF        GGG             Single site     
> RTCM3.x(MSM5)   8082    R_NYPF

> This is the command string I am using:
> gpsd -n /dev/ttyACM0
> ntrip://UUUUUUUUUUUU:address@hidden:8082/NYPF -N -D 5     (
> username and password are filled out correctly )
> gpsd is getting valid Lat/Lon from the device.

Presumably without being in RTK.

It is good you are using a single-site mountpoint.  gpsd does not have
support to send a position back to use the iMax VRs style.

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