During April 2025, Lin Xu enhanced the reliability of I2C master transmission on the ESP32-S3-Korvo-2 platform within the espressif/esp-bsp repository by introducing glitch filtering, updating the I2C driver version, and adding a configurable initialization parameter. This work addressed hardware communication stability using C and embedded systems expertise. In parallel, Lin authored a technical blog post for the espressif/developer-portal repository, detailing the ESP_NEW_JPEG library’s features such as rotation, clipping, and scaling, and providing practical usage guidance. The month’s contributions demonstrated depth in hardware debugging, technical writing, and documentation, supporting both platform robustness and developer education.