Which pins can I use for SPI?

[sravyts]

Hello
I would like to use the OLIMEX ESP32-EVB to communicate with an external ADC (the MCP3909 from microchip). Which pins can I use for this purpose?
Thanks!

[LubOlimex]

I'd recommend first reading about ESP32 and ADC here:

https://docs.espressif.com/projects/esp-idf/en/latest/api-reference/peripherals/adc.html

And then check this image for the ESP32 pinout:

https://docs.zerynth.com/latest/_images/Olimex_ESP32_EVB_pin_comm.jpg