I've read this reference page http://arduino.cc/en/Reference/DueExtendedSPI about SPI on Arduino Due and it says that you can set the CS pin (what's CS btw?) and it gives an example, where it says that If using multiple devices with different CS pins, you'll need to declare those pins in setup(). …

MISO, MOSI and SCK pins on Arduino Due

Antar January 15, 2018, 4:30am 8

I have Due R3. MOSI, MISO, and CLK, I was not able to find them. However, some wrote 4,1,3 but I wasn't able to make SPI work. Anyone knows?

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