[chrony-users] Chrony not taking SOCKET data from Application

[sarveshwar k <sarveshwar.kt@xxxxxxxxx>]

Hi tuxfamily group,

I am trying to use chrony for synchronizing system clock to GPS UTC time with 1PPS.

Below is my requirement:

- Need to sync system clock with reference clocks as GPS time and 1PPS from GNSS Receiver.

- The GNSS receiver connected to UART port is already in use by another module (So cant use this UART interface)

- The module that accesses this UART port publishes GPS UTC time to other applications.

I cannot use GPSD as the interface is already in use by another module.

Can I send the GPS UTC time from the application through the Unix Domain Socket to the Chronyd.

Please see below diagram of my requirement.

chronyd.sock was created under /var/run/chrony when I run chronyd. I wrote an application using unix domain socket and connected to socket and sent GPS UTC time in the required format accepted by chronyd.

But I dont see chronyd taking this time as I see #? for SOCK and PPS reference clocks.

Below are my configurations in chrony.conf file for reference clocks:

refclock PPS /dev/pps1 lock GPS refid PPS

refclock SOCK /var/run/chrony/chronyd.sock refid GPS

Please advise how I can do this.

Thanks & Regards

Sarveshwar.K