On Thu, Jan 28, 2021 at 1:34 AM Javier Herrero <jherr...@hvsistemas.es> wrote: > I have been playing lately with the M8F, but did not had a detailed look > to the 30.72MHz frequency as John did. I have used it along with a > Zynq-based board (a very unexpensive surplus EBAZ4205, that can be get > for ~10 EUR) to made an ntp server, replacing the kernel clocksource > from the ARM timer with an external timer implemented at the FPGA > running from the 30.72MHz output (multiplied inside the FPGA to 250MHz),
Would this mean any timestamps generated via clock_gettime(CLOCK_MONOTONIC_RAW) are going to be directly derived from the value of your FPGA timer? Because if that is the case, then isn't the PPS phase offset from the system clock effectively the phase offset of the GPS to the GPS? I.e., it's zero because the same clock is being compared to itself? _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
