Re: [chrony-users] Setting up Chrony with PPS

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Thanks for replying.

A little more info: my system is a Raspberry Pi 2 B. I have been able to get ntp to work with pps via GPIO pin 4. Had to recompile ntp to activate the pps support.

Don't let the above fool you into thinking I know what I am doing. I have some level of expertise with programming, but system level Linux stuff is a mystery to me. IOW, real clear step by step instructions are greatly appreciated!

If either module is being loaded, you should see a device (e.g. pps0) in
/sys/class/pps. If your GPS has a lock and the pps kernel module is
configured properly, you should see timestamps updating every second, e.g.

Yes, the /sys/class/pps/pps0 path exists and contains these files: subsystem (folder), assert, clear, dev, echo, mode, name, path, and uevent.

$cat /sys/class/pps/pps0/assert

Are you seeing those?

Yes, but just one timestamp per execution:

pi@gps ~ $ cat /sys/class/pps/pps0/assert
pi@gps ~ $ cat /sys/class/pps/pps0/assert
pi@gps ~ $ cat /sys/class/pps/pps0/assert
pi@gps ~ $ cat /sys/class/pps/pps0/assert

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