> > On my rpi the jitter is between 2 and 10us iirc but it is a while since > > I tested it. A quick peak shows me currently 3us jitter. Not bad for a > > userspace solution imho. > > > Really? The PPS to GPIO interface is handles in user space? It is not > interrupt driven?
Yes it is. But, until today, I used a software solution which interfaces the interrupt to ntp. I did that because I hate recompiling kernels and the pps code for rpi+gpio was not in the main distrio. Folkert van Heusden -- Ever wonder what is out there? Any alien races? Then please support the seti@home project: setiathome.ssl.berkeley.edu ---------------------------------------------------------------------- Phone: +31-6-41278122, PGP-key: 1F28D8AE, www.vanheusden.com _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
