1.44.0

This is a minor release, including new features, improvements, and bug fixes
across several platforms.

📈 Added

• General:

  • Added a compile-time check in the FreeRTOS metrics port
    (ports/freertos/src/memfault_metrics_freertos.c)
    that errors if configTIMER_TASK_STACK_DEPTH is less than 256 words. The
    metrics heartbeat timer callback runs on the FreeRTOS timer daemon task, and
    a stack that's too small risks overflow. If you're confident your configured
    stack depth is sufficient, define
    MEMFAULT_METRICS_FREERTOS_DISABLE_TIMER_TASK_STACK_DEPTH_CHECK to silence
    the check.

• nRF Connect SDK:

  • Add a new Metrics Session helper for tracking Bluetooth connection and
    disconnect code. Zephyr bluetooth systems will have the session metric
    automatically captured when Memfault Bluetooth metrics are enabled
    (CONFIG_MEMFAULT_METRICS_BLUETOOTH=y).

🐛 Fixed

• Zephyr:

  • Fixed a compatibility issue in the nrf MRAM coredump backend
    (ports/zephyr/common/coredump_storage/memfault_mram_backed_coredump.c),
    due to an upstream change that added a mutex in the flash_write() path.
    The coredump backend now directly writes to MRAM, bypassing the driver,
    similar to how the RRAM implementation works.

🛠️ Changed

• Zephyr:

  • Rename the Memfault SDK's Zephyr library name to a stable name:
    memfault-firmware-sdk. Previously, the name was generated based on the
    filepath, therefore references could change depending on where the SDK
    source was in the workspace relative to the project root. Thanks to
    @nordicjm for providing this fix in
    #125 🎉!