Hello Vladimir, Sorry for the wrong debug log. I processed this log in excel and saved it, that is why it lost the nano second information.
Please refer this debug log : https://drive.google.com/file/d/1bS6_9AOZlcOQVI2_7nY-zqJClZ8IX1Qr/view?usp=sharing at 1597801630 timestamp. I am using a 4.14.78 kernel with ublox gps receiver, I don't have access to NMEA currently. Thanks & Regards, *JAIRAJ SOLANKI* On Mon, Sep 7, 2020 at 2:40 AM Vladimir Oltean <olte...@gmail.com> wrote: > Hi, > > The debug log you've shown: > > ts2phc[65078.518]: /dev/ptp1 extts index 0 at > 1597905800 corr 0 src 1597905801 diff 3 > ts2phc[65078.518]: /dev/ptp1 master offset 3 s2 > freq 3063 > ts2phc[65078.758]: /dev/ptp1 extts index 0 at > 1597905800 corr 0 src 1597905800 diff 232250871 > ts2phc[65078.758]: /dev/ptp1 master offset 232250871 > s2 freq 32767999 > ts2phc[65078.768]: /dev/ptp1 extts index 0 at > 1597905800 corr 0 src 1597905800 diff 247064811 > ts2phc[65078.768]: /dev/ptp1 master offset 247064811 > s2 freq 32767999 > ts2phc[65078.778]: /dev/ptp1 extts index 0 at > 1597905800 corr 0 src 1597905800 diff 259363981 > ts2phc[65078.778]: /dev/ptp1 master offset 259363981 > s2 freq 32767999 > ts2phc[65078.791]: /dev/ptp1 extts index 0 at > 1597905800 corr 0 src 1597905800 diff 266250998 > ts2phc[65078.791]: /dev/ptp1 master offset 266250998 > s2 freq 32767999 > ts2phc[65078.791]: /dev/ptp1 extts index 0 at > 1597905800 corr 0 src 1597905800 diff 269792584 > ts2phc[65078.791]: /dev/ptp1 master offset 269792584 > s2 freq 32767999 > ts2phc[65078.816]: /dev/ptp1 extts index 0 at > 1597905800 corr 0 src 1597905800 diff 275713427 > ts2phc[65078.816]: /dev/ptp1 master offset 275713427 > s2 freq 32767999 > ts2phc[65078.825]: /dev/ptp1 extts index 0 at > 1597905800 corr 0 src 1597905800 diff 305627546 > ts2phc[65078.825]: /dev/ptp1 master offset 305627546 > s2 freq 32767999 > ts2phc[65078.854]: /dev/ptp1 extts index 0 at > 1597905800 corr 0 src 1597905800 diff 316218230 > > does not match the code: > > pr_debug("%s extts index %u at %lld.%09u corr %d src %" PRIi64 > ".%ld diff %" PRId64, > slave->name, event.index, event.t.sec, event.t.nsec, > slave->correction, > (int64_t) source_ts.tv_sec, source_ts.tv_nsec, *offset); > > Specifically, the nanosecond portion of event.t and of source_ts is > missing from your log. > > What other changes have you made to the code? > > I don't think one can say much from this log alone. Without seeing the > nanoseconds portion of the timestamps, you can't get a good impression > of what is going on. The source timestamps might be running slow, or the > extts might be running fast, or there might simply be noise on the line > causing spurious PPS events. > > What hardware driver are you using for collecting the extts timestamps? > What kernel? What GPS module? Can you use the NMEA protocol parser for > it? > > Thanks, > -Vladimir > -- YouTube: *https://youtu.be/Sn2-cZ_Ln9E <https://youtu.be/Sn2-cZ_Ln9E>*
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