Edelweise Escala developed a targeted unit-test suite for the LTC3208 LED driver within the analogdevicesinc/no-OS repository, focusing on enhancing quality assurance for embedded systems. Using C programming and unit testing techniques, Edelweise expanded test coverage to include both core functionality and edge cases, establishing a reliable baseline for automated validation. The test scaffolding was carefully aligned with existing no-OS conventions, ensuring seamless integration with continuous integration workflows and simplifying long-term maintenance. This work reduced regression risk and enabled safer future refactoring, providing clearer traceability of test coverage improvements and supporting faster, more reliable validation of driver changes in embedded environments.