Debugging Microcontrollers
Event Information
This talk gives you an overview of debugging ARM Cortex-M microcontrollers with a focus on the practical configuration and usage of the relevant tools. In particular, I will present:
- Debug interfaces (SWD) and the associated debug probes (J-Link, STLink) and libraries (JLinkGDBServer, OpenOCD).
- How to install and configure arm-none-eabi-gdb(-py3) for debugging your ELF.
- Commonly used GDB commands and scripts.
- Advanced GDB scripting via its Python API.
- Inspecting peripheral state with CMSIS-SVD files and custom visualizations.
- Dynamic call stack tracing and graphing.
- Coredumping for post-mortem debugging via CrashDebug.
- Remote GDB scripting via the Machine Interface.
- ITM profiling over SWO pin using Orbuculum.
- Thread/IRQ/Workqueue scheduling visualization and latency analysis using perfetto.
- High-bandwidth ETM tracing over TRACE pins: J-Trace and ORBtrace mini.
- Interesting related projects and possible future work.
This talk is meant to introduce you to what is possible with embedded debug tools in practice, rather than to give you a comprehensive lecture.
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