During October 2024, Xufeng Tian focused on stabilizing SPI integration for the Raspberry Pi Pico within the levizh/rt-thread repository. He addressed a hardware compatibility issue by correcting the SPI1 MISO and SCK pin assignments in the rtconfig.h configuration file and updated the chip select pin dependency from SPI0 to SPI1. This targeted bug fix improved peripheral routing and resolved persistent SPI1 pin errors, enhancing platform reliability for embedded projects. Working primarily in C, Xufeng applied his expertise in device drivers, embedded systems, and RTOS configuration to reduce debugging time and strengthen cross-platform consistency in the RT-Thread BSP.