Notes:

Don't Use

GPI06-11, these are used for integrated SPI flash.


Internal pull-up does not work on GPIOs:


Internal pull-up works on GPIOs:


SPI

FunctionPin
CLK14
CS15
MISO12
MOSI13

References

ReferenceURL
ESP32 Pinout Referencehttps://randomnerdtutorials.com/esp32-pinout-reference-gpios/