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One typical debugging activity is setting breakpoints and then running the program from breakpoint to breakpoint, inspecting the program’s internal state at each breakpoint. While this sounds simple, it gets complicated when one looks behind the curtain, which we will do in this blog post.
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The featured picture of this post has been created by DALL-E.
Microchip recently lowered the price for its hardware debugger SNAP from more than €50 to less than €20 €10. I have recently created the Python script dw-gdbserver for this and other hardware debuggers so that you can now use SNAP in the Arduino IDE 2 to debug classic ATtinys and small ATmegas. All in all, this is an affordable and care-free debugging solution for classic AVRs.
The featured picture of this post has been created by DALL-E.
It often happens in embedded debugging that you suddenly end up in the interrupt dispatch table while single-stepping through your code. Another unrelated problem is that sometimes, single steps can take an eternity. In this blog post, I address both issues and describe how to circumvent them in a gdbserver implementation.
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