Debugging software on Cortex-M3 and -M4 devices

摘要

Hopefully you know perfectly well what the software in your microcontroller is supposed to do. However, if you have been asking yourself why it doesn't work as expected and wondered what it is actually doing in there, then trust me, you're not alone.rnMaybe you have written an asynchronous application that makes use of a multitasking operating system and event-driven interrupts. Debug methods such as printf instrumentation or setting breakpoints and single-stepping the application are tiresome and ineffective, and are also likely to miss the most intricate timing issues as the core is constantly being halted.