Zephyr 1.14.0 Released (corrected)

Kumar Gala


In my rush to get 1.14 released, I reported on the Major Enhancements from 1.13. Sorry for the confusion. Here is the corrected list of Major Enhancements in 1.14:

* The Zephyr project now supports over 160 different board configurations
spanning 8 architectures. All architectures are rigorously tested and
validated using one of the many simulation platforms supported by the
project: QEMU, Renode, ARC Simulator, and the native POSIX configuration.

* The timing subsystem has been reworked and reimplemented, greatly
simplifying the resulting drivers, removing thousands of lines
of code, and reducing a typical kernel build size by hundreds of bytes.
TICKLESS_KERNEL mode is now the default on all architectures.

* The Symmetric Multi-Processing (SMP) subsystem continues to evolve
with the addition of a new CPU affinity API that can "pin" threads to
specific cores or sets of cores. The core kernel no longer uses the
global irq_lock on SMP systems, and exclusively uses the spinlock API
(which on uniprocessor systems reduces to the same code).

* Zephyr now has support for the x86_64 architecture. It is currently
implemented only for QEMU targets, supports arbitrary numbers of CPUs,
and runs in SMP mode by default, our first platform to do so.

* We've overhauled the Network packet (net-pkt) API and moved the majority
of components and protocols to use the BSD socket API, including MQTT,
CoAP, LWM2M, and SNTP.

* We enhanced the native POSIX port by adding UART, USB, and display
drivers. Based on this port, we added a simulated NRF52832 SoC which enables
running full system, multi-node simulations, without the need of real

* We added an experimental BLE split software Controller with Upper Link Layer
and Lower Link Layer for supporting multiple BLE radio hardware

* The power management subsystem has been overhauled to support device idle
power management and move most of the power management logic from the
application back to the BSP.

* We introduced major updates and an overhaul to both the logging and
shell subsystems, supporting multiple back-ends, integration
of logging into the shell, and delayed log processing.

* Introduced the `west` tool for management of multiple repositories and
enhanced support for flashing and debugging.

* Added support for application user mode, application memory
partitions, and hardware stack protection in ARMv8m

* Applied MISRA-C code guideline on the kernel and core components of Zephyr.
MISRA-C is a well established code guideline focused on embedded systems and
aims to improve code safety, security and portability.

- kumar

On Apr 16, 2019, at 3:44 PM, Kumar Gala <kumar.gala@...> wrote:


We are pleased to announce the release of Zephyr kernel version 1.14.0. The 1.14.0 will be the first Zephyr LTS release that we will support for at least 2 years.

Major enhancements with this release include:

* Extensible and Pluggable Tracing Support
* Compartmentalized application memory organization
* Logging System Overhaul
* Introduce system calls for BSD socket APIs
* Support for IEEE 802.1AS-2011 generalized Precision Time Protocol (gPTP)
* Link Layer Discovery Protocol (LLDP) TX support
* Support for TLS and DTLS using BSD socket API
* Support for Link Layer Multicast Name Resolution (LLMNR)
* Introduced reworked ADC API and updated Nordic, NXP, Atmel, and Synopsys DesignWare drivers
* Support OS driven Power Management framework
* Basic support for Arm TrustZone in Armv8-M

The detailed release notes can be found here:


I would like to thank all the contributors to this release. In total 250 contributors participated in the development of 1.14. Its taken a lot of hard work from everyone in the Zephyr community!

Thank you again,

Kumar Gala