I would like to use the SPI header of my Due board to communicate with my circuit (which required MISO,MOSI,SS and CLK all except operating 2.5 V)
When I use Due without any change the SPI is operating with 3.3 V (internal regulator). I would like to change this to 2.5 V (with AREF pin or changing the regulator? ).
Is there a way to use SPI pins with 2.5 V external supply?