Protocol question/sample rate Power Profiler Kit II

[pungent1188]

Datasheet sampling rate is 100Ksps, but for me PPK2 always returns:

16384 bytes in ppk2_test.get_data()   (one sample period)
4096 analog samples in ppk2_test.get_samples(read_data)
with sleep(10ms) or empty when there are no new samples

 

but 100Ksps isn't multiple of 4096.

This is important for proper timing.

I'm using the python library to get the data.

https://github.com/IRNAS/ppk2-api-python

[Priyanka]

Hi,

Have you worked on this PPK 2 before? What is it's version?

Could you also tell me your Power profiler version and nRF Connect for Desktop version?

Regards,

Priyanka

[pungent1188]

Hello,

nRF Connect desktop v5.0.0 works correctly with it, using Power Profiler v4.1.0

But I'm trying to use it with the python API mentioned above, so this is a deeply technical question for the department who designed the PPK2-PC protocol interface.

Cheers

[Priyanka]

Thanks for the update. Looking into this and will get back to you.

-Priyanka

[pungent1188]

Any luck finding the developers of PPK2?

[Priyanka]

Hi,

Apologies for the delayed resonse.

We support the nRF Connect for desktop app. For questions about IRNAS we would suggest you to contact them through their public repo.

The block size can be whatever it wants as long as it is known. You can adjust these things in the frontend SW. With 4096 samples to a frame, it's 24.4140625ms and that's the input to your algorithms.

-Priyanka