can not work with nrf54l15

[Llama12580]

I have customed a board based on nrf54l15.

Then I built the matter light_buld demo with target 'nrf54l15pdk_nrf54l15_cpuapp' and burned the file "merged.hex" into my custom board.

I successfully burned it into my board, but It didn't run. And I couldn't get any log through the UART(TX:P0.0, RX:P0.1).

BTW, I did these with ncs2.7.0.

[Kenneth]

Hello,

Can you elaborate a bit more what tests you performed?

- For instance do other examples work?

- Have you run radio test to verify that the radio and chip works?

- Have you tried debugging through RTT using VS code or Ozone to observe where the program stops?

- I assume you have tested with for instance v2.7.0-cs2?

- Do you hardware have external 32kHz crystal? Is the UART RXD pin pulled high?

Kenneth

[Llama12580]

Hi, thanks for your reply. I just wanted to confirm whether my custom board works or not.

1. I also tried other examples, but I can't tell if it worked or not because I can not see any log. BTW, is it available to build project with target "nrf54l15pdk_nrf54l15_cpuapp" for my custom board?

2. No, I didn't do any radio test.

3. I did try to debugging through RTT using "J-Link RTT Viewer V7.88j", but it doesn't have nRF54 target. I didn't see any log ,whatever using RTT viewer or using UART30(TX:P0.0, RX:P0.1).

4. No, I have not tested with v2.7.0-cs2, would it be better than v2.7.0 (commit:5cb85570ca43bc344d3145c2338128eacf4b48ec)?

5. Yes, my hardware have external 32kHz crystal, but I am not sure whether the UART RXD pin is pulled high or not, which pin and how should I check?

[Kenneth]

My suggestion is wait to end of week when the nRF Connect SDK v2.8.0 is out, with full production support for the nRF54L15. In the meantime you can (if you haven't already) run through the DevAcademy training using an nRF54L15-DK as board:

https://academy.nordicsemi.com/courses/nrf-connect-sdk-fundamentals/ 
https://academy.nordicsemi.com/courses/nrf-connect-sdk-intermediate/ 

This will give you better understanding on how to debug in general, also for your own board.

Kenneth