7-9 October, 2026 Prague, Czechia View More Details & Registration Important Note:Timing of sessions and room locations are subject to change.
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ZBus (Zephyr Bus) is a thread-to-thread message and data exchange protocol based on a bus topology. Since Zephyr v4.4.0, it also supports IPC between multiple Zephyr domains running on different CPU cores.
While this fits well for homogeneous multicore systems, heterogeneous SoCs typically run different operating systems on different cores. A common ARM-based setup uses Linux on a Cortex-A core for high-level tasks and Zephyr on a Cortex-M core for real-time workloads.
Communication between these environments requires data exchange across both cores and operating systems. Currently, the practical approach is to transfer raw bytes through RPMsg channels, requiring developers to implement custom protocols on both sides.
ZBus for Linux bridges this gap by connecting Linux applications to a remote ZBus instance, enabling structured communication across heterogeneous systems.
This talk presents the implementation of an early prototype, the challenges encountered, and the overall architecture of ZBus for Linux.
Peter Fecher just finished his bachelors degree in Computer Engineering. He has been working at PHYTEC for 3 years now, specialising on microcontrollers and IoT systems.
