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Re: Getting NMEA data out from gpsd for use in u-center

From: Michael Byczkowski
Subject: Re: Getting NMEA data out from gpsd for use in u-center
Date: Sat, 2 Oct 2021 17:53:15 +0200

That’s strange, indeed. – I just installed ser2net from git, expanded ser2net.yaml with

connection: &con00
    accepter: tcp,6000
    enable: on
    connector: serialdev,

connection: &con01
    accepter: tcp,6001
    enable: on
    connector: serialdev,

connection: &con02
    accepter: tcp,6002
    enable: on
    connector: serialdev,

so that I have the serial output in different speeds on ports 6000ff., made sure that no firewall is blocking, stopped gspd etc., did my sudo systemctl start ser2net, and then simply chose tcp://my.ip.adress:6000 (or whichever port serves the hat’s baud rate) in 2nd most recent u-center (the brand new one appears to not like IP connections (yet?).

Speed is chosen correctly on your setup?

Best regards,

P.S.: I’m using a u-blox ZED-F9P hat on my Raspberry PI4 with Raspbian/Debian.

On 2. Oct 2021, at 17:25, David Taylor <> wrote:

On 02/10/2021 12:21, Michael Byczkowski wrote:
Indeed, David, that would be so great to have!
With regards to ser2net, everything works much smoother with version 4.3.3.
Best regards,

I've now tried two approaches, and while both /may/ be sending data (how to test?), neither stream is seen by u-center.  Of course, it's most likely my errors!  I tried to broadcast UDP, and then to send TCP.

Perhaps I have the client/server relation the wrong way round as I would expect simply to make a TCP stream available rather than having to specify the device in "nc".  I have less experience of UDP, except within the context of NTP offering a service, and needing to have a firewall entry allowing incoming connections.

Anyway, here's what I tried:

UDP method:
gpspipe -r | nc -u -b 12101

TCP method:
gpspipe -r | nc 12101

So if anyone has any bright ideas...

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