Re: NMEA error on cat /dev/ttyACM0

[Seán Mac Suibhne]

Sorry I should have said that the laptops rub XUbuntu 22.04, the Raspberry Pis are using Bullseye and are fully updated running GPSD 3.22-4

Beir bua

Seán

On Tuesday 30 August 2022 at 00:02:14 IST, Seán Mac Suibhne <smacsuibhne@yahoo.com> wrote:

Hi,

I have several GPS usb dongles and use them on laptops and raspberry pis

This the output of lsusb for one of the dongles

    Bus 004 Device 003: ID 1546:01a7 U-Blox AG [u-blox 7]

for some time now I notice the result of

    cat /dev/ttyACM0

gives the wrong latitude and longitude which wasnt a problem as I use them to get time and date on the raspberry pis

When I

    telnet  localhost 2947

and put in

    ?WATCH={"enable":true,"nme":true}

I also get the same errors

However if I put in

    ?WATCH={"enable":true,"json":true}

I get the correct lat and long

When I use gpsmon cgps and xgps I also get the correct lat and long.

Why is cat /dev/ttyACM0 not giving the correct values for lat and long anymore and how can I correct it?

All the best

Seán Mac Suibhne

BTW I use  

    cat /dev/ttyACM0 | grep -a GPRMC >> gps.log 

to record my location when I move locations on a raspberry pi