microPlatform update 0.5

Summary

Zephyr microPlatform changes for 0.5

The major change in this update is a non-fast-forward Zephyr repository tree based on the upstream 1.11 development tree.

Linux microPlatform changes for 0.5

Raspberry Pi 3 kernel was updated to use the same OSF distro configuration fragment as used by the other machines.

Zephyr microPlatform

Summary

The major change in this update is a non-fast-forward Zephyr repository tree based on the upstream 1.11 development tree.

Highlights

  • **Non-fast-forward** Zephyr update to 1.11 development tree

Components

MCUBoot

Features

  • Not addressed in this update

Bugs

  • Not addressed in this update

Zephyr

Features

Memory security improvements for ARC:
  • The ARC architecture has gained additional memory security support.
I2C for STM32F0:
  • The STM32F0 SoC family gained I2C support.
New Bluetooth testing API and cases:
  • Bluetooth grew a new testing API, and several test cases were merged.
Board support and peripheral enablement:
  • Various fixes and peripheral enablement in the boards, across architectures.
Ethernet improvements for mcux driver:
  • The mcux ethernet driver now disables promiscuous mode by default, and also implements IPv6 multicast group joining/leaving.
Device tree bindings for sensors and I2C:
  • A generic yaml description for some sensors and I2C devices was added to device tree, along with other sensor- and I2C-related fixes.
Legacy cleanups:
  • Thread groups were removed from the kernel, along with other cleanups in clocks and timers.
Flashing/debugging changes:
  • The flash and debug infrastructure has been reworked to largely eliminate the use of environment variables. All board files were affected. Out-of-tree boards will need to be updated. Users of in-tree boards have been updated. User workflows that use the old environment variables will need updates.
size_report changes:
  • Similarly to the flashing and debugging changes, the size_report script now uses command-line arguments instead of environment variables. User workflows that use the old environment variables will need updates.

Bugs

STM32F0 flash fixes:
  • The STM32F0 SoC family has fixes for the flash driver
LWM2M fixes:
  • Several network fixes were merged for the LWM2M library.
IEEE 802.15.4 fixes:
  • Fixes were merged for IEEE 802.15.4.
Some BT Mesh fixes:
  • A few fixes and improvements were made to the Bluetooth Mesh app. The pace of fixes on this new feature appears to be slowing down, indicating greater maturity.

Zephyr FOTA Samples

Features

  • Not addressed in this update

Bugs

Fixes for blockages in the TCP stack:
  • The dm-hawkbit-mqtt sample reduced the TCP retry count, which prevents the TCP stack from blocking due to low memory conditions when many retry packets are in flight. This is a tradeoff between compliance with RFC recommendations for retry time and a working system with tight memory constraints.

Linux microPlatform

Summary

Raspberry Pi 3 kernel was updated to use the same OSF distro configuration fragment as used by the other machines.

Highlights

  • Raspberry Pi 3 kernel configuration now uses the OSF config fragment

Components

Meta OSF Layer

Features

Layer Update:
  • Raspberry Pi 3 kernel updated to use the OSF distro config fragment. Power off bluetooth interface during shutdown if enabled via the btattach service.

Bugs

  • Not addressed in this update

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