SPI on DUE - whats the deal with SPI(1)??

Official Hardware Mega Due
1

I understand the DUE uses SPI(0) with CS options of 4,10,52.
what pins do i use for CS if i want to use SPI(1) instead? could you share example of code to write byte and blocks?
[SPI(1) is the other dual row 6 pin header between MPU and power adapter port]- i have specific reason to want separate MOSI and SCLK lines.

thanks

2

You mean the ICSP put there for programming the ATMega16U2? That's not connected to the main processor.

The Due can run SPI on any of the USARTS - that's most of the additional serial ports. If you can give up a serial port then you can run hardware SPI on those. I haven't seen a library to do this but I think it's possible to do without throwing away to much of the Arduino framework.

3

SPI1 - only available on the SAM3X8H (217 pin) which is not commercially available but was used on an Atmel evaluation board. Compare pages 6 and 7 in the datasheet (lower right corner of diagram).