Worked on the zephyrproject-rtos/hal_rpi_pico repository, focusing on code quality improvements within the CyW43 driver. The primary contribution involved removing unused variables related to backplane window assignments from cyw43_bus_pio_spi.c, as the F1_OVERFLOW_CHANGE feature is disabled. This targeted cleanup eliminated dead assignments, reducing the risk of stale state and simplifying future maintenance. The work was implemented in C, leveraging skills in driver development and embedded systems. By streamlining the codebase, the changes enhanced maintainability and readability, aligning with ongoing code quality initiatives and supporting more robust development practices for embedded hardware drivers in the project.