- Linus’ guitar pedal project, and why it clearly needs Zephyr next
- RISC-V Summit Europe recap: QEMU, custom instructions, DSPs, and low-power cores
- ETM tracing, CoreSight, and “time-travel” debugging
- Testplan v2 for faster, smarter CI
- CMake unity build experiments
- ESP-NOW broadcast sample and ESP32 WPA Enterprise support
- Realtek Ameba Wi-Fi support
- BCM2711 framebuffer driver for Raspberry Pi
- native_sim DMIC and I2S file backend for audio testing
- DMIC shell
- nPM10xx LED driver and fake LED controller
- ARMv8-A AArch32 execution state support
- DPLPMTUD probe tracking for QUIC
- Neighbor Awareness Networking, aka Wi-Fi Aware
- Experimental Model Context Protocol support
- Mutex misuse detection and reverse iterable sections
- Himax HX8353E display driver
- New shields and boards: MikroElektronika EERAM 3.3V Click and Armfly STM32H743XIH6
- Upcoming Zephyr meetups and your weekly developer survey reminder
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Episode Summary
- ETM Tracing: A short ETM tracing demo opens a deeper discussion about CoreSight, trace pins, RAM-backed traces, and the kind of tooling that can even step execution backwards.
- Smarter CI: Testplan v2 now makes PR test selection much more targeted, which should mean faster feedback and more CI room for checks like coding-guideline tooling and additional compilers.
- CMake Unity Builds: Early CMake unity build experiments explore whether aggregating compilation units can help Zephyr builds and kernel optimization work.
- ESP Wireless Updates: A new ESP-NOW broadcast sample lands alongside ESP32 WPA Enterprise support, from lightweight connectionless radio experiments to full enterprise Wi-Fi authentication.
- Realtek and Raspberry Pi: Realtek Ameba series support keeps growing, while the Raspberry Pi-side BCM2711 framebuffer driver adds another piece to the big Pi puzzle.
- Native Audio Testing: The new native_sim DMIC driver, DMIC shell module, and I2S file backend make it easier to feed, inspect, dump, and replay audio without special hardware.
- LED Drivers and Test Doubles: nPM10xx LED support adds Nordic PMIC LED driving, while a fake LED controller helps test blink patterns and status semantics.
- Architectures and Networking: ARMv8-A AArch32 support enables 32-bit images on ARMv8-A targets, while QUIC gains DPLPMTUD probe tracking and Zephyr adds Neighbor Awareness Networking, better known commercially as Wi-Fi Aware.
- Model Context Protocol: Experimental MCP support could let Zephyr devices expose capabilities to agents, from simple GPIO-style controls to more interesting testing and automation scenarios.
- Kernel Helpers: Mutex misuse detection helps catch uninitialized use and re-initialization bugs, while iterable sections gain reverse iteration variants for priority-like or unwind-style ordering.
- Displays, Shields, and Boards: A Himax HX8353E display driver, the MikroElektronika EERAM 3.3V Click, and the feature-packed Armfly STM32H743XIH6 board round out the hardware news.
- Community Updates: The developer survey is still open until the end of the month, and there are plenty of upcoming Zephyr meetups to join or speak at.