Re: [Linuxptp-devel] [Linuxptp-users] How do I implement Sync message receive timeout according to Automotive and 802.1 AS profiles?

[Richard C. <ric...@gm...>]

On Fri, Oct 11, 2019 at 07:23:38AM +0000, Y.b. Lu wrote:
> I'm just not familiar how applications use 802.1AS synchronized time.

I don't know of any open source applications using 802.1AS either!

> For physical clock adjustment, I know we have /dev/ptpx device to access for time.
> For free running clock, I can see master_local_rr is used for master/local rate ratio which makes sense for TC to synchronize frequency,
> but for OC/BC/end instance, where to find the synchronized time. Is the TIME_STATUS_NP info enough for applications?

Given master_offset at ingress_time and cumulativeScaledRateOffset,
you can calculate the remote time.

Thanks,
Richard