Worked on stabilizing SPI integration for the Raspberry Pi Pico within the levizh/rt-thread BSP, focusing on resolving hardware compatibility issues. Addressed a critical bug by correcting the MISO and SCK pin assignments in the rtconfig.h configuration file and updating the chip select pin dependency from SPI0 to SPI1. This targeted fix eliminated persistent SPI1 pin errors, improving peripheral routing and reducing debugging time for embedded projects. The work leveraged expertise in device drivers, embedded systems, and RTOS configuration, using C as the primary language. These changes enhanced platform reliability and ensured consistent cross-platform behavior for Pico-based development environments.