RE: Maximum count speed of timer

Donovan — Tue, 28 Dec 2021 18:47:47 GMT

Oops I linked the wrong files, I think those are the original example files.
devzone.nordicsemi.com/.../27413.sdk_5F00_config.h devzone.nordicsemi.com/.../2330.main.c

That should be the updated ones, but your reply seems to agree with my findings. “If you have e.g. a 50% duty-cycle then max frequency will be 16 MHz / (3 low periods + 3 high periods) = 2.67 MHz.” Thanks for the response, I think I will have to figure out a different way to measure that signal.

RE: Maximum count speed of timer

Hung Bui — Tue, 28 Dec 2021 14:33:53 GMT

Hi Donovan,

I assume the code you provided is only the code to generate the square wave ?
Could you also provide the code where you capture the square wave and measure using a counter ?

We have a similar question long ago and one of our engineer calculated the theoretically maximum capture speed of the GPIOTE here.