Testing and Validation for Embedded Systems Questions

Designing and executing a comprehensive testing and validation strategy for embedded firmware and hardware. Includes unit testing of firmware logic with hardware abstraction layer mocks, integration testing against real peripherals, automated hardware in the loop testing to validate real time and timing constraints, and end to end system validation. Discusses selection of test harnesses and frameworks, test automation and continuous integration pipelines for firmware, instrumentation and measurement for functional and non functional metrics, stress and robustness testing, regression suites, and test coverage criteria. Also covers deterministic reproduction of timing bugs, fault injection, validation under constrained resources such as low memory or intermittent power, and approaches to make tests repeatable and reliable.