Neither of those two programs require much in the way of CPU power and the Pi 3 is a very powerful computer. The Pi 3 could be doing several additional things all at once. I doubt NTP and LH together would use 10% of the Pi 3's CPU.
The problem is that I think BOTH NTP and LH will want to communicate with the T-bolt's serial port. You'd have to figure out way around that. They both can't have exclusive access. One way might be software like gpsd to make the GPS available via a socket interface to multiple users another way would be to configure NTP to use the "atom" reference clock. This just uses a PPS only and not the serial port. But then NTP would need another clock to "number the seconds" which could be another NTP server out on the Internet. My opinion is that a Thunderbolt is over kill for NTP. Not only that but it uses a lot of power. Better to use a tiny, low power GPS receiver for NTP. It runs 24x7 so it adds up. On Thu, Apr 21, 2016 at 3:09 PM, Mark Sims <[email protected]> wrote: >>Would there be enough horsepower for a Pi 3 to run Lady Heather and act as a >>stratum 1 NTP server? > I suspect so, the PI3 has quad core 64-bit capable 1.2GHz processor. The > PI3 seems to be about 50% faster than the PI2. It also runs about code > about as fast as a 2 GHz Pentium 4. But the ethernet interface is via a USB > bridge (or maybe some other serial interface on the PI3). Not the best way > to do things... Also, the current PI Linux distros are all 32-bit. > I have the sound file issue worked out (system() a background shell that > invokes aplay). My old code left off the & on the shell command and it was > not returning until the sound finished... d'oh > I also have the PI color issue resolved... > Now to finish up the serial port init code... Oh, and also the ethernet > socket code... > I'm picking up one of those 7" PI LCD screens tomorrow... should make for a > nice package. But they cost twice what the PI does... > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. -- Chris Albertson Redondo Beach, California _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
