Hi Grr,

I have never needed to use this function neither this range (ns).
But I used the usleep function which resolution is defined as
CONFIG_USEC_PER_TICK.
But maybe, in your case, for such range, you should consider using a
hardware timer or a Timer Hook.
Take a look at this wiki:
https://cwiki.apache.org/confluence/display/NUTTX/Short+Time+Delays

Sara

Em qua., 24 de mar. de 2021 às 13:37, Grr <gebbe...@gmail.com> escreveu:

> Hello to all.
>
> Looking for the right way to create a _very_ short delay (10-100 ns), I
> found clock_nanosleep, whose description says:
>
> "The suspension time caused by this function may be longer than requested
> because the argument value is rounded up to an integer multiple of the
> sleep resolution"
>
> What is the sleep resolution and where/how is defined?
>
> TIA
> Grr
>

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