On Mon, Nov 01, 2021 at 03:56:38AM -0700, Richard Cochran wrote: > On Mon, Nov 01, 2021 at 11:19:15AM +0200, Vladimir Oltean wrote: > > > For what it's worth, I have solved both my problems (checking ptp4l sync > > and phc2sys sync) through alternative methods, > > How did you do it?
For checking ptp4l sync I wrote my own PTP management message handling over the local AF_UNIX socket and I am querying the CURRENT_DATA_SET. For checking phc2sys sync I shamelessly stole the relevant logic from phc2sys (read_phc/sysoff_measure), including the various PTP_SYS_OFFSET_* ioctls, and I am just calculating the PHC's offset to CLOCK_REALTIME. So both of these are local. Then I created some communication protocol in my application (sender and receiver roles) so that the sender queries the receiver about its local sync data, and then has the logic necessary to figure out whether now is a good time to send or not. _______________________________________________ Linuxptp-devel mailing list Linuxptp-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-devel
