RTT log output issue(sdk, toolchain v3.0.2)

RE: RTT log output issue(sdk, toolchain v3.0.2)

ozoz05 — Wed, 23 Jul 2025 02:07:36 GMT

I set another version of the example project to the latest version of sdk and toolchain and flash it, so there seems to be a problem.
Change to the correct version and work normally.

RE: RTT log output issue(sdk, toolchain v3.0.2)

Amanda Hsieh — Tue, 22 Jul 2025 15:04:29 GMT

Would you like to share the solution to benefit other users?

RE: RTT log output issue(sdk, toolchain v3.0.2)

ozoz05 — Mon, 21 Jul 2025 22:32:00 GMT

Thank you for your answer. I found the cause and resolved the issue.

RE: RTT log output issue(sdk, toolchain v3.0.2)

Amanda Hsieh — Mon, 21 Jul 2025 14:56:37 GMT

Hi,

Are you able to test the NCS v3.0.2 zephyr\samples\hello_world or nrf\samples\bluetooth\peripheral_lbs sample with the following configs? Can you obtain the RTT log?

CONFIG_LOG=y
CONFIG_USE_SEGGER_RTT=y
CONFIG_LOG_BACKEND_RTT=y
CONFIG_UART_CONSOLE=n
CONFIG_RTT_CONSOLE=y
CONFIG_PRINTK=y

CONFIG_LOG_BUFFER_SIZE=2948

If you still cannot get the RTT log, could you test with nRF5340DK?

Regards,
Amanda H.