NRF54L15-DK - Problems configuring logging

[Alex P]

Dear Nordic Team,

I am trying to configure logging through J-LINK RTT for my firmware.

My prj.conf contains the following:

CONFIG_PRINTK=y

CONFIG_CONSOLE=y

CONFIG_LOG=y

CONFIG_LOG_BACKEND_RTT=y

CONFIG_LOG_DEFAULT_LEVEL=4

In my main.c code I have the following code:

LOG_MODULE_REGISTER(main, CONFIG_LOG_DEFAULT_LEVEL);

and then a number of LOG_INF entries (I also added several printk's too, for a test).

However, when I start J-Link RTT Viewer (v. 8.38) (target device NRF54L15_M33, connection over USB, target interface SWD over 4000 kHz - but also tried JTAG: no difference) - I can see it getting connected, however, it is not displaying any log output.

Do you know what could be the reason?

Thanks in advance. 

WBR,

Alex

 

[runsiv]

Hi Alex

I did a quick test with the following Kconfig

CONFIG_LOG_BACKEND_RTT=y
CONFIG_USE_SEGGER_RTT=y
CONFIG_LOG=y
CONFIG_RTT_CONSOLE=y
CONFIG_LOG_BACKEND_UART=n


CONFIG_CONSOLE=y
CONFIG_UART_CONSOLE=n

Which worked as you can see, did you test with a DK or custom board?

Regards

Runar

[Alex P]

Thanks a lot, it worked! Looks like CONFIG_USE_SEGGER_RTT=y was important one.