Doesn't adding a second PPS signal mean that the accuracy can only go
down? If the two PPS signals are really in sync then they will be
clocking essentially simultaneously. They won't get serviced
simultaneously so one will either be ignored or will be serviced after a
delay.
On 12/4/2017
The answer is no and yes (and also maybe)..
no because the current pps-gpio driver only loads a single pin (though
it could be extended to load more than one, but i dont think anyones
done that).
yes because the other way it could be achieved is to create a second
module called pps-gpio2
Has anyone tried to use more than one PPS source at the same time on a
Raspberry Pi? The device tree overlay pps-gpio does not seem to support more
than one instance. That is, if my config.txt specifies two instances of
pps-gpio for different GPIO pins, only /dev/pps0 is created.
The
