Linux Zeitsynchronisation mit GPS

• https://austinsnerdythings.com/2021/09/29/millisecond-accurate-chrony-ntp-with-a-usb-gps-for-12-usd/
• https://austinsnerdythings.com/2021/04/19/microsecond-accurate-ntp-with-a-raspberry-pi-and-pps-gps/

Fedora Linux

USB GPS Empfänger:

lsusb
Bus 005 Device 003: ID 1546:01a8 U-Blox AG [u-blox 8]

GPS Daemon installieren:

gpsd-3.23.1-2.fc36.x86_64

Datei /etc/sysconfig/gpsd anpassen:

cat /etc/sysconfig/gpsd
# Options for gpsd, including serial devices
OPTIONS=""
# Set to 'true' to add USB devices automatically via udev
USBAUTO="true"
#
#
DEVICES="/dev/ttyACM0"
GPSD_OPTIONS="-n"