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@memfault-bot memfault-bot released this 15 Nov 01:31
1.17.0
053865f

📈 Added

  • General:

    • Add parsing of an optional log message argument for the test_trace command
      in the core demo cli. This argument will be inserted as a
      custom log message with the trace event, which can be useful for testing the
      insertion of custom log messages into trace events at runtime.

    • Add the following built-in metrics, enabled by default (and quota-exempt):

      • MemfaultSDKMetric_log_recorded_lines : the total number of log lines
        written into the Memfault log buffer during the heartbeat interval
      • MemfaultSDKMetric_log_dropped_lines : the total number of log lines
        dropped (overwritten or not recorded) due to buffer exhaustion during the
        heartbeat interval

      For example, if the buffer is sufficiently large to store 10 logs, and 15
      logs are written:

      • MemfaultSDKMetric_log_recorded_lines will be 15
      • MemfaultSDKMetric_log_dropped_lines will be 5

      If 5 more logs are written:

      • MemfaultSDKMetric_log_recorded_lines will be 20
      • MemfaultSDKMetric_log_dropped_lines will be 10

    • Cosmetic updates to the examples/freertos/ app log format, including
      applying ANSI color codes based on log level.

      # Before:
mflt> test_log
Raw log!
2024-11-14T17:01:12Z|4284 I Info log!
2024-11-14T17:01:12Z|4284 W Warning log!
2024-11-14T17:01:12Z|4284 E Error log!

# After:
mflt> test_log
Raw log!
MFLT:[INFO] Info log!
MFLT:[WARN] Warning log!
MFLT:[ERRO] Error log!

  • ESP-IDF:

    • Enable NTP time synchronization by default, controlled with the Kconfig
      option CONFIG_MEMFAULT_NTP_SYNC. After NTP synchronization, events
      (heartbeats and trace events) will be timestamped with the current device
      time.

    • Add a test_trace command to the ESP-IDF demo cli to capture an example
      trace event. This behaves the same as the test_trace command in the
      core demo cli.

    • Mark coredumps with the Software Watchdog crash reason if the IWDT
      triggered the fault, instead of marking them as Hard Fault.

    • Add OTA update check-ins to the HTTP client's periodic upload, controlled
      with the Kconfig option CONFIG_MEMFAULT_HTTP_PERIODIC_UPLOAD_OTA. When
      enabled, the system will be restarted after downloading the update. To
      customize this behavior, enable
      CONFIG_MEMFAULT_HTTP_PERIODIC_UPLOAD_OTA_CUSTOM_CBS, and implement the
      global callback struct g_memfault_ota_update_handler. This feature is
      disabled by default.

🐛 Fixed

  • General:

    • Add missing type promotion rules for variants of char pointers when
      encoding compact logs. Previously, these types that should promote to a
      string in the compact logging encoding fell into the default case of int,
      causing compact logging decode to fail when processed by the Memfault
      backend.

  • ESP-IDF:

    • Fix an issue when using compact logs with
      CONFIG_MEMFAULT_USE_MEMFAULT_BUILD_ID=y (default). The command would
      always run (was always out-of-date) when any idf.py [build|flash] command
      is run, even if the original .elf file did not change. This caused the
      log_fmt section (used for decoding compact logs) to be removed from the
      /memfault-esp32-demo-app.elf.memfault_log_fmt file, which causes Memfault
      Compact Logs to fail to decode. The command is fixed to only run when the
      .elf file changes.
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