ESP8266 Community Forum

rudy wrote:No, you can't just pick any pins you want. Those are specific pins that are the other option that can do SPI.

I understand that but i thought that some "forwarding" would be possible to be done on a higher software level.. similar like some other things for ESP are not native for every pin.

Then that would be a software implementation of SPI. And you can't do that on the pins that are used for the flash chip that holds your code.