System-Level Testing (SLT) has become critical for validating fully integrated systems under realistic operating conditions. Manual orchestration across the Test PC, Device Under Test (DUT), debug tools, power control, image flashing, and data logging introduces variability, inefficiency, and human error. This white paper presents a unified Software Automation framework designed to standardize and accelerate SLT workflows. The solution centralizes control of TestPC, DUT interfaces, and debug tools while automating power sequencing, image flashing, and datalog pipelines. A single automation application supports both Bench Mode (engineering validation, exploratory testing) and Handler Mode (high-throughput, production/ATE environments). We detail the architecture, execution model, and design patterns, then present four case studies demonstrating reduction in cycle time, increased repeatability, and improved coverage across platforms.
