Developed and integrated a Bluetooth Host Controller Interface driver for Realtek Bee SoCs within the nxp-upstream/zephyr repository, enabling Bluetooth functionality on Bee-based embedded devices. The work involved implementing the HCI driver in C, establishing a complete communication path between the hardware and Zephyr’s Bluetooth stack. This addition laid the foundation for future Bluetooth Low Energy features by ensuring robust hardware-to-stack integration. The development process demonstrated expertise in Bluetooth development, driver development, and embedded systems, with all contributions adhering to established code quality and contributor guidelines. No bug fixes were recorded during this period, with focus placed on new feature delivery.