How to enable JLINK RTT modem trace for the at_client sample in NCS v3.2.3?

[RongLinQin]

Hi nordic support:

      Our product uses the nRF9151 and  prepare for GCF certification testing, which need to capturing LTE mode trace log.

       We first intend to try running the NCS v3.2.3's at_client sample program on the nRF9160DK,  and capture the trace logs via J-Link RTT. Could you please advise on how to modify the at_client sample's config to capture trace logs in Cellular Monitor? 

       Thanks!

BRs

Qin, Rong-Lin

      

[RongLinQin]

Hi Øyvind:

    Thanks for your help. 

    We tried modifying the following two configuration options. After increasing TRACE_BACKEND_RTT_BUF_SIZE and TRACE_STACK_SIZE, we can capture logs normally now. Could you help check what values should be set for these two configuration and the MODEM TRACE LEVEL for  GCF certification test? 

CONFIG_NRF_MODEM_LIB_TRACE_BACKEND_RTT_BUF_SIZE=16384
CONFIG_NRF_MODEM_LIB_TRACE_STACK_SIZE=8192

    Thanks!

BRs

Qin, Rong-Lin

[Øyvind]

Hello, I am not aware of any levels needed to be set for GCF Certification tests, but the numbers seem sufficient. If you can collect modem traces correctly, this should correct.

Kind regards, 
Øyvind