Worked on enhancing I2C bus recovery mechanisms for STM32 Nucleo boards within the zephyrproject-rtos/zephyr and renesas/zephyr repositories. Focused on device driver development and embedded systems, the work involved adding scl-gpios and sda-gpios properties to I2C nodes in Device Tree source files, enabling GPIO-based bus recovery and default activation through board configuration. Utilized C and Device Tree to implement post-recovery routines that reapply pin control and reinitialize I2C registers, ensuring reliable bus operation after lockups. These changes improved I2C communication stability across multiple STM32 Nucleo variants, addressing lockup handling and recovery flow without introducing new bugs.