NRF_LOG_INF didn't show in RTT

[zkshen]

I use SDK12.2, and I have enabled NRF_LOG_BACKEND_SERIAL_USES_RTT and NRF_LOG_ENABLED. But there was nothing show in J-link RTT and don't know why.

[Jørgen Holmefjord]

Do you get any output if you set it to NRF_LOG_BACKEND_SERIAL_USES_UART? Do you have NRF_LOG_DEFERRED set? If you do, you need to call NRF_LOG_PROCESS() or NRF_LOG_FLUSH() to process the log queue.

[zkshen]

I've set NRF_LOG_DEFERRED and once I called NRF_LOG_PROCESS(), the chip would reset. Now I'am using SEGGER_RTT_printf instead of NRF_LOG_INFO

[Jørgen Holmefjord]

Have you tried debugging, to see which function is failing, and what error code you get?