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July 2022

Linux SDK 0.2.0​

Memfault extends its features on embedded Linux toward basic fleet operations. You can now measure basic fleet-wide health metrics by tracking reboots and their cause at scale. Similar to Memfault’s MCU and Android SDKs, there is now a dedicated Memfault Linux SDK 0.2.0 with source code including examples. The SDK repository comes with Docker images including QEMU support to simplify the first steps.

As part of the SDK, a new on-device agent memfaultd orchestrates the configuration of related components such as SWUpdate for OTA. It will act as a minimal yet central component in future releases for features such as metrics and crash reporting.

There is also a new Getting Started section that guides users through the setup with Yocto, and the reference documentation covers more details.

General​

  • Added: Entries are now shown under Events Debug when an invalid serial number is sent
  • Improved: Users can opt-out of email for alerts and issues separately via notification preferences
  • Improved: Performance of Device Timeline
  • Improved: Various UI elements (Issue List on Device Details, consistent use of issue type in lists, next available release of a device)
  • Improved: Documentation of alert frequency and file upload API endpoints
  • Fixed: Visual glitches (chart icons on Safari, truncated tooltips, overlapping content in lists)
  • Fixed: Error when activating full releases via the Version Matrix
  • Fixed: Missing issue reasons on Dashboard
  • Fixed: Missing device serial numbers at Issues → Recent Traces
  • Fixed: Device search result no longer sorted by last seen
  • Fixed: Error when marking a metric as a device attribute when approaching quota limits
  • Fixed: Error when trying to activate a non-staged release using memfault-cli
  • Changed: Normalized Charts now only consider active devices of a given population

MCU​

  • Added: Published Python package mflt_compact_log to decode Memfault-flavored compact logs
  • Added: Published list of contributions to memfault-ios-cloud
  • SDK versions 0.31.3, 0.31.4 and 0.31.5 were released. Some highlights: ****
    • Added: Support for Zephyr v3.1+ by conditionally compiling out Logger v1 code (and pre-release of nRF Connect SDK v2.0.99 and Zephyr > v3.1)
    • Added: Support for deferring the initializing Memfault SDK to application start on ESP32 port with new Kconfig option: CONFIG_MEMFAULT_AUTOMATIC_INIT
    • Added: Support for initializing Memfault earlier in the system startup for diagnosing crashes in an early driver initialization on Zephyr port with new Kconfig options, CONFIG_MEMFAULT_INIT_PRIORITY/CONFIG_MEMFAULT_INIT_LEVEL_POST_KERNEL
    • Fixed: Build warnings on NRF Connect SDK + Zephyr v3.1 (partially supported)
    • Fixed: Backtraces for Zephyr __ASSERT() macro on aarch32/cortex_m.
    • Fixed: compilation issue in the Dialog example app from the removal of memfault_demo_cli_cmd_print_chunk() in Memfault SDK release v0.31.4.

Android​

Linux​