C_L,
Glad to be of help to you.
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As I’m using ESP-IDF v5.5.1, I can report that the RF switch is not handled at all. Which, I think, is not a surprise since the ESP-IDF approach is different from the Arduino approach and does not handle board-specific setup. With ESP-IDF the developer is responsible for board-specific features himself. That’s why I’m so grateful for this discussion, and, in particular, for @sigmdel‘s summary and the link to his paper posted in August 2024. For ESP-IDF projects which make use of the XIAO ESP32-C6 this is exceptionally valuable, I think.