One thing that’s been particularly frustrating is trying to find complete documentation for Xtensa. I’ve looked around quite a bit, and it feels like there isn’t a fully open, detailed spec available. Most of what exists is either partial, behind NDA, or spread across different sources.
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The main issue is that ESP32 uses the Xtensa architecture, which is significantly more complex than something like an ATmega328
One thing that’s been particularly frustrating is trying to find complete documentation for Xtensa. I’ve looked around quite a bit, and it feels like there isn’t a fully open, detailed spec available. Most of what exists is either partial, behind NDA, or spread across different sources.