How to change mode on xadow NFC?

I am using the Intel Edison with the Xadow NFC v1.0, all the info i found on the web(also from wiki) about this module says that the module supports 3 modes (I2C, SPI, UART) but i dont know how to change this option. I expected that the module got some kind of micro switch or similar but I didn’t saw it.

How can I change the mode of the module?
or the mode is chosen from my code?

Thank you for any help you can give me.


You can change the mode through code.

Note: When Xadow NFC is using SPI communication protocols, there is an existing library which supports phone-to-Xadow NFC communication. The default communication mode for this product is I2C, so the library cannot be used directly.

Thanks and Regards