Setup

Serial Modem Host Applications
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Serial Modem Host Applications

  1. Open nRF Cloud:

    1. Log in to nRF Cloud.

  2. Upload the firmware symbol file - nRF Cloud needs the build's zephyr.elf to decode crash addresses into function names and line numbers. Upload it once per firmware build, before or as soon as devices start reporting data:

    1. In nRF Cloud, navigate to Software.
    2. Select Symbol Files.
    3. Click on Upload Symbol File.
    4. Select build/zephyr/zephyr.elf from your west build directory (the default output when building from applications/ppp).

    Alternatively, upload from the command line with the memfault CLI:

    memfault \
  --org-token <token> \
  --org <org> \
  --project <project> \
  upload-mcu-symbols build/zephyr/zephyr.elf

  3. Verify data is flowing - After the device connects to nRF Cloud, periodic observability uploads run in the background (CONFIG_MEMFAULT_PERIODIC_UPLOAD). Look for:

    <inf> mflt: Periodic background upload scheduled - initial delay=... period=...

    To trigger a manual upload from the shell:

    uart:~$ mflt test heartbeat
uart:~$ mflt post_chunks