Custom Board with LFCLK SYNTH Falls Back to Non-Connectable Extended Advertising – NCS v2.9

RE: Custom Board with LFCLK SYNTH Falls Back to Non-Connectable Extended Advertising – NCS v2.9

Jared — Thu, 08 May 2025 08:46:27 GMT

Hi Karim,

Yes, please open another ticket for this issue. Let's focus on your original problem here,

best regards

Jared

RE: Custom Board with LFCLK SYNTH Falls Back to Non-Connectable Extended Advertising – NCS v2.9

Karim_Os — Wed, 07 May 2025 10:54:33 GMT

Hi Jared, I will share with you the logs
and this is not related to the original, maybe I had to open another ticket for that
Thnaks

RE: Custom Board with LFCLK SYNTH Falls Back to Non-Connectable Extended Advertising – NCS v2.9

Jared — Wed, 07 May 2025 09:30:25 GMT

Hi Karim,

I can't say I've experienced this before, would you be able to share the log between when this it's successful versus when it's not? Does this happen with standard unmodified samples from the sdk as well?

Also, how does this relate to your original problem:

[quote user=""]However, I’ve observed that on the custom board (which does not have a 32.768 kHz LF crystal), the device only advertises non-connectable extended advertising (ADV_EXT_IND).
When I flash the exact same HEX to the DK (PCA10156), it works perfectly and performs legacy connectable advertising (ADV_IND), as expected.[/quote]

best regards

Jared

RE: Custom Board with LFCLK SYNTH Falls Back to Non-Connectable Extended Advertising – NCS v2.9

Karim_Os — Thu, 01 May 2025 10:57:47 GMT

Hi Jared,
Sorry for the Late Reply,
It seems the building process is not consistent
For the same code, board and configurations:
Whenever I press "Build" __NOT__ Rebuild
Sometimes I get the generated merged.hex
Sometimes it gets me the code section, ram sections (memory usage statistics, which come just before generating a hex), but the step of merging.hex just isn't executed, and for that, I had to clean and rebuild ,
And sometimes that triggers a full rebuild
Any idea why there is an inconsistency ?
Thanks
Karim Osama

RE: Custom Board with LFCLK SYNTH Falls Back to Non-Connectable Extended Advertising – NCS v2.9

Jared — Fri, 25 Apr 2025 09:00:38 GMT

[quote user="Karim_Os"]Yes , rebuilt the same application for development kit
and many times I press Build button, it actually builds with no errors yet it is not generating the "merged.h[/quote]

Ok, but at some point it produced the merged.hex file since you have been able to flash the development kit?

If you rebuilt the project for two different boards, then there is indeed a chance that some config is missing in your custom board.

You can try to compare the dts file that is generated in your build folder for two builds and see if you spot any significant difference between the two. You should also do this for the .config file as well.

regards

Jared

RE: Custom Board with LFCLK SYNTH Falls Back to Non-Connectable Extended Advertising – NCS v2.9

Karim_Os — Mon, 14 Apr 2025 05:46:44 GMT

Hi Jared,
Yes , rebuilt the same application for development kit
and many times I press Build button, it actually builds with no errors yet it is not generating the "merged.hex"

RE: Custom Board with LFCLK SYNTH Falls Back to Non-Connectable Extended Advertising – NCS v2.9

Jared — Mon, 07 Apr 2025 09:14:25 GMT

Hi,

[quote user=""]When I flash the exact same HEX to the DK (PCA10156), it works perfectly and performs legacy connectable advertising (ADV_IND), as expected.[/quote]

Just to be sure I understand your correctly. When you say "exact same hex", do you mean that you rebuilt the same application for development kit, or do you mean that you actually flashed the same hex that was built for your custom board unto the devkit?

regards
Jared