ESP32 Forum

On a esp32c3-fh4 chip, without using external flash, can I set flash in DIO mode in menuconfig and use SPIWP or SPIHD (or both) as GPIO？

I found a similar post https://esp32.com/viewtopic.php?t=38718

I am not sure how the internal flash is designed, when in DIO mode, SPIWP and SPIHD pins is still connected to inner flash, can they be used as GPIO safely? Or is it inner implementation dependent?

Yes, they are still connected to the flash, and as the flash interprets the signals there, those pins are not usable as general purpose IO.