Worked on the au-ts/sddf repository to enhance the stability and compatibility of the I2C driver stack within an embedded systems context. Focused on C programming and driver development, the work addressed critical reliability issues by refining command handling, validating read flags, and ensuring RX FIFO safety to prevent runtime hangs and unsafe operations. The approach included a targeted refactor of interrupt handling, removing target-mode-only interrupts to support host-mode compatibility and broader device support. All changes were delivered with explicit, traceable commits, resulting in safer reads and writes, reduced edge-case failures, and improved maintainability for the I2C subsystem.