nRF52832 doesn't seem to boot

RE: nRF52832 doesn't seem to boot

JONATHAN LL — Fri, 28 May 2021 12:30:18 GMT

Thanks for updating the post with the solution.

Regards,
Jonathan

RE: nRF52832 doesn't seem to boot

rboutrois — Thu, 27 May 2021 10:55:13 GMT

Hi Jonathan,

Thanks for your reply

Programming the chip and toggling a LED are mostly the only things we can actually do with our boards.
We assembled 4 of them and they have exactly the same issue.

We respected the reflow temperature curves and the chip doesn't become warm when using RF.

I can share you our design files, but as proposed, we prefer to make the ticket private if possible.

We just figured out we inverted HFXO and LFXO in the schematic, so on our board as well ... That can explain why we only have only "basic" function.
Unfortunately the crystals don't have the same footprint so we have to remake a new PCB to resolve this problem.

RE: nRF52832 doesn't seem to boot

JONATHAN LL — Wed, 19 May 2021 13:06:02 GMT

Hi,

Are you still able to program the chip? you can toggle a LED ?

[quote user=""]an a bad antenna tuning can fry some specific parts of the chip ?[/quote]

If you somehow ended up using to much heat and damaging the SoC it should not be a problem.

Can you share the complete schematic and PCB layout files(Gerber) ? I can make this ticket private if you dont want so share any info.

Do you have the HFXO and LFXO mounted?

It can operate in LDO mode as shown in the ref design https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52832.ps.v1.1/ref_circuitry.html?cp=4_2_0_52_0#schematic_qfn48_ldo

Regards,
Jonathan