sudo gpsd -V
gpsd: 3.17 (revision 3.17)
ls -l /dev/serial*
lrwxrwxrwx 1 root root 5 Jun 11 18:11 /dev/serial0 -> ttyS0
lrwxrwxrwx 1 root root 7 Jun 11 18:11 /dev/serial1 -> ttyAMA0
# Default settings for the gpsd init script and the hotplug wrapper. # Start the gpsd daemon automatically at boot time START_DAEMON="false" # Use USB hotplugging to add new USB devices automatically to the daemon USBAUTO="false" # Devices gpsd should collect to at boot time. # They need to be read/writeable, either by user gpsd or the group dialout. DEVICES="/dev/serial0" # Other options you want to pass to gpsd GPSD_OPTIONS=""
[Unit] Description=GPS (Global Positioning System) Daemon Sockets [Socket] ListenStream=/var/run/gpsd.sock ListenStream=[::1]:2947 ListenStream=127.0.0.1:2947 SocketMode=0600 [Install] WantedBy=sockets.target
I purposefully set START_DAEMON="false" while I was testing.
I noticed something interesting though: if I run sudo gpsmon /dev/serial0 I do get the gpsmon output, and I do see results, but then after a few seconds it stops with "Error reading device", and then subsequent runs do not produce any output.
I'm pretty versed in Linux, and work as a software engineer, so if I need to deep dive into anything I'm fine doing so.