nRF Connect Cellular Monitor v1.0.4 or later

Viewing RTT modem traces

Modem traces captured in J-link Real Time Transfer (RTT) logger can be played back in Cellular Monitor

In the first release of Cellular Monitor, RTT interface is not supported for traces capture. However, RTT modem traces captured outside of the tool can be viewed in Cellular Monitor with the following procedure.
  1. Enable the RTT trace backend in your device's application using the Kconfig option CONFIG_NRF_MODEM_LIB_TRACE_BACKEND_RTT in the prj.conf file.
  2. Ensure your device is running supported modem firmware, see Minimum requirements and limitations and note the version for playback.
  3. Use the J-link RTT logger to collect the trace or traces and save in binary (.bin) format.
    See SEGGER Real Time Transfer (RTT) for more information.
  4. Load and playback the trace in Cellular Monitor.
    See Loading modem traces for play back for more information.