A practical walkthrough of using Serial Wire Output (SWO) with the Instrumentation Trace Macrocell (ITM) and Data Watchpoint and Trace (DWT) on ARM Cortex microcontrollers, specifically an STM32H7. Covers how to reroute printf through the ITM on port 0, use additional ITM stimulus ports (1–31) for custom data, and leverage DWT hardware comparators for automatic live variable plotting — all without needing UART or USB CDC. Includes STM32CubeIDE configuration steps: enabling trace asynchronous debug mode, entering the correct core clock (480 MHz), enabling the Serial Wire Viewer, and using the ITM Data Console and SWV Data Trace Timeline Graph to visualize ADC readings from thumbstick inputs in real time.
•23m watch time
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