February 2026 focused on strengthening test coverage for the rpi_pico2 platform in Zephyr4Microchip/zephyr. Delivered an initial mailbox test scaffold, enabling automated validation of mailbox driver behavior on RP2350. This work improves platform validation, reduces risk before releases, and lays groundwork for further testing enhancements.

This month focused on stabilizing touch interaction for the 3.5" TFT display by correcting touch axis inversion in the touch controller. The change aligns touch coordinates with the display output, resolving a mismatch that caused inverted touches and degraded user interaction for the buydisplay integration in the Zephyr-based stack.

Concise monthly summary for 2025-10 focusing on key accomplishments, major bug fixes, and business value. Repos involved: zephyrproject-rtos/zephyr-testing. Notable commits: f18e0ff280ac16fe1f5858bfa962fa7bc0c3517e and 61e177f521ce1841b870bb2e1412a30571913897e. Work this month included hardware-targeted polarity correction for LED0 on Seeed XIAO nRF54L15, plus a code cleanup that clarifies bt_conn_unref() without changing functionality. Hardware validation was performed on both XIAO-nRF54L15 and the sense variant to ensure correct behavior.

Concise monthly development summary for 2025-08 focused on enabling high-performance inter-processor communication for RP2040/RP2350 on Raspberry Pico 2, via a mailbox-based IPC pathway and device-tree integration within Zephyr. Delivered a low-latency mailbox driver and corresponding DT exposure to support cross-core messaging, establishing a foundation for future SIO peripherals and RP Pico 2 workloads.