Developers love mechanical keyboards—especially when their cube mates use one. In this talk, Daniel DeGrasse will cover the process of developing Flexboard, a mechanical keyboard based on Zephyr. The keyboard runs a customized fork of ZMK, a keyboard firmware based on Zephyr.

Zephyr’s current clock control APIs offer APIs for querying and setting clock rates, as well as clock gating and configuration of clock roots. This talk proposes additions to the clock control API, which will enable transition between different clock states, allowing these devices to realize increased power savings without significant software overhead.

Explore how to implement the Zephyr Power Management subsystem using a smartwatch demo application based on the NXP platform. This demo application highlights the use of the power management subsystem for both the device (SoC) and the system, along with other power optimization techniques for wearables.

This session explains how to use a third-party static library within the Zephyr build system and explores how to build the external library using a different build system and include the built static library. Topics including changes needed to update an existing Zephyr application and how to create a new Zephyr application (update/create project configuration, use an architecture specific toolchain, etc.) will also be covered.

Daniel works for NXP in Romania, hacking on Linux kernel audio drivers for i.MX applications processor-based boards. He is also a teaching assistant for Operating System Internals class at University POLITEHNICA in Bucharest and very passionate about helping newcomers understand the Linux kernel world, while also volunteering to mentor for the Google Summer of Code.