Secondly, sorry for the newb questions but I've also read many docs and haven't worked it out so asking for tips
...The ESP32-S3-DevKitC pinout uses the same pins for FSPI and SUBSPI (apart from SUBSPICS0) so I don't understand how one would wire up both simultaneously ... do you have to map one of them to other pins (using IO_MUX or GPIO matrix)?
And, how do you tell the code that the default pins should be FSPI or SUBSPI - is it just the args to the begin(...) [like, no args for the default pins and specify the args for non-default]?
Thanks in advance, m