[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: COEX GPS (model UBX-M8030 IC) on Raspberry Pi 4 Model B 2018 connect

From: Gary E. Miller
Subject: Re: COEX GPS (model UBX-M8030 IC) on Raspberry Pi 4 Model B 2018 connection issues
Date: Thu, 22 Jul 2021 21:54:28 -0700

Yo Aranza!

On Thu, 22 Jul 2021 21:44:00 -0700
Aranza Shaccid Leon <> wrote:

> I checked my dmesg just now, ttyACM0 is the GPS while ttyACM1 is the
> flight controller.

Which explains some of your bad results.

> Here is the proof of this:
>  udevadm info -a -p $(udevadm info -q path -n /dev/ttyACM0)

A lot easier to look at dmesg.  Or just look at "lsusb -v'

> I redid the previous commands and here are the results:
> systemctl stop gpsd
> sudo systemctl disable gpsd
> systemctl stop gpsd.socket
> systemctl disable gpsd.socket

If you have truly deafated systemd(dumb) control of port 2947, then you
do not need to keep doing that.

> sudo su -
>  gpsd -n /dev/ttyACM0
> cgps  *(this works now)*


Now you know why I kept asking how you are sure about your device names.

> + gpspipe -w -n 2 -x 20
> gpspipe: invalid option -- 'x'

Well, that is still broken, and the next thing to look at.

> root@clover-1060:~# gpsd -nND 4 /dev/ttyACM0

That looks good now.

> gpsd:PROG: NTP: ntpshm_put(/dev/ttyACM0,-20)  1627006166.000000000 @
>  1626925563      .225722496

Your system clock is still way off.

Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703  Tel:+1 541 382 8588

            Veritas liberabit vos. -- Quid est veritas?
    "If you can't measure it, you can't improve it." - Lord Kelvin

Attachment: pgpBruWFf4Lid.pgp
Description: OpenPGP digital signature

reply via email to

[Prev in Thread] Current Thread [Next in Thread]