Arkin Solomon enhanced the Zephyr HAL for Raspberry Pi Pico by delivering a documentation-focused update to the AON Timer API in the zephyrproject-rtos/hal_rpi_pico repository. Concentrating on API design and documentation, Arkin clarified the intended usage of the timer’s disable_alarm function, renaming it to aon_timer_is_running within the documentation to prevent developer confusion and reduce support overhead. This C-based update introduced no code changes, instead improving the API’s clarity and maintainability for future refactors. The work addressed onboarding challenges by ensuring the documentation accurately reflected the API’s behavior, resulting in a more stable and developer-friendly codebase.