Help to use Winc1500 on a custom board

Hi everyone,

I've got a custom board that has embedded a Winc1500, the same of a wifi101 shield. The custom board mounts a SAM D21, so it should have similiar features to an Arduino Zero.

First question: Do I need to use Arduino's WiFi library or WiFi101 library?

Next, I need to configure the board in order to use the Winc, this means to map pins correctly. Both WiFi libraries state that I should be using ping 11, 12 and 13. On my board, these pins are already mapped for other uses, so I'd like to map them on other pins, yet I can't find the map pinout in the libraries. Where do I need to look?

Thank you in advance!