Re: [bmp280 v1 1/6] iio: pressure: bmp280: correct meas_time_us calculation

[Jonathan Cameron <jic23@kernel.org>]

On Wed, 06 Aug 2025 19:53:55 +0200
ASSI <Stromeko@nexgo.de> wrote:

> Jonathan Cameron writes:
> > I'm not following this. Why are we now effectively adding MP280_MEAS_OFFSET
> > that we weren't before whether or not oversampling is enabled?  
> 
> Because that is a constant part of the actual measurement cycle that
> happens entirely independent of any later measurements (whose individual
> durations depend on the oversampling settings for the respective
> channel).  The graphics early in the datasheet don't show explicitly
> where in the cycle it happens (my conjecture is at the end when it has
> to update the IIR filters and swap the registers), however section 9.1
> in Appendix B is abundantly clear that it's there.
> 
> 
> Regards,
> Achim.

Hi Achim. I'm a bit behind on reviews this weekend after a garage door related
crisis (now resolved) so might be a few days before I fully catch up.

I have few mins now though so quick replies where I can!

For this, thanks for the description.  Please add something on this either
as a comment alongside that constant referring to the datasheet stuff you
mention, and/or something in the patch description.

Thanks,

Jonathan