How to delay until a next increment of time occurs ?

[Dietmar Schwertberger]

On 13.11.2019 21:20, R.Wieser wrote:
>> 300us is getting on towards realtime.
> Not really.  Translated to a frequency (toggeling the pin) it would be just
> 1.6 KHz.   Thats rather slow for an ARM machine running on 1.4 Ghz (about a
> million times as fast).

It *is* real-time...
Real-time is not about speed, but about guaranteed timing.


> Not possible: the 300 uSec is the basic timing, but the pin isn't always
> changed on every tick of it (the result is a code train).

With Micropython I did successfully use timer and DMA to accomplish 
something like that (in the 100ns range, though). With a mainloop and 
delays you can't guarantee to meet your requirements, at least not on a 
multitasking non-realtime system.

Regards,

Dietmar