Main program on 9160 vs 52840

[rupert.jtyler]

I saw on the main Q&A page the person answering the Q&A said "one should really put the application in one CPU (the M33) " which I understand the nRF 9160 is the M33 processor. I did some searching and couldn't find any information on this: why should one put the application on the M33 vs the M4 (9160 vs 52840)? I'm evaluating these devices and I'm particularly concerned with power consumption, does that play a role in this?

Thanks in advance,

Tyler

[awneil]

rupert.jtyler said:

I saw on the main Q&A page

please give a link so that we can see it in context.

rupert.jtyler said:

why should one put the application on the M33 vs the M4 (9160 vs 52840)?

Not sure what you mean by that?

The nRF9160 doesn't have an M4 core; the nRF52840 is a single-core chip.

If you're having the nRF9160 and  nRF52840 together in your design, it would probably make most sense in general to have your application in the M33 core - as that's the more powerful, and isn't also having to run any radio stack.

But your application may have specific reasons to do otherwise - only you know the details.

[rupert.jtyler]

Here is the link for the Thingy 91 Q&A: https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/q-a-for-introduction-to-nordic-thingy-91-webinar

I apologize, I was directed to the Q&A page from the link I posted so I incorrectly assumed it was a Thingy 91 specific Q&A forum. 

I understand now, so it's likely recommended to primarily use the 9160 because it's the more powerful processor?

[awneil]