OSS + ELC EU 2026

DALI (Digital Addressable Lighting Interface) is the dominant standard for professional lighting control, yet firmware support for it has been absent from the Zephyr ecosystem — until now. This talk walks through the full journey of designing and upstreaming a DALI low-level driver into Zephyr mainline: from understanding the protocol's precise timing and bus requirements, to crafting an API that fits naturally within Zephyr's driver model, to surviving the community review process through multiple rounds of discussion and refactoring.

Along the way we also experimented with AI-assisted code review as part of our workflow, and we'll share what that was actually like in the context of a real upstream contribution.

We'll be honest about what was hard, what the community pushed back on, and what we'd do differently.