How does SLM use RTT?

[xinjiang]

How does the slm routine of ncs1.9.1 use rtt log. Below is my configuration:

CONFIG_LOG=y
CONFIG_LOG_DEFAULT_LEVEL=3

CONFIG_USE_SEGGER_RTT=y
CONFIG_RTT_CONSOLE=y
CONFIG_LOG_BACKEND_RTT=y
CONFIG_UART_CONSOLE=n
CONFIG_LOG_BACKEND_UART=n

With the default configuration, there should be RTT log output, but nothing happens in the actual window.

[Edvin]

Hello,

I have actually not used Segger Embedded Studio with the nRF Connect SDK. 

If you flash the sample you are running, and try to open Segger RTT Viewer after the application has started. Do you see the log in RTT Viewer?

Best regards,

Edvin

[xinjiang]

RTT Viewer also has no log output.

[Edvin]

How does the slm routine

What does "slm" stand for, by the way?

Make sure that you try to connect the RTT viewer after (!) you have started the application.

Did you try any of the unmodified NCS samples, such as NCS\nrf\samples\bluetooth\peripheral_uart? This uses the RTT backend for logging.

What HW are you running on?

Are you sure that your application is using logging at all? I see LOG_CORE_INIT() from your screenshot, but is there anything in your application, e.g. in main.c that indicates that something should be logged?

BR,

Edvin

[xinjiang]

SLM is serial_lte_modem demo.Can you try running it and see if there is any log output.

[Edvin]

Edvin said:

What HW are you running on?

What HW are you running this on? A DK?

Best regards,

Edvin

[xinjiang]

Yes, is 9160 DK.