In one of my applications the SPI pins are occupied by a motor shield but I want to use the SPI bus too. Is there any possibility of using a soft SPI bus on other pins? Given that people have created a software UART it doesn't seem completely out of the question, but I can't find any mention of this…

Is there a 'Software SPI'?

system September 24, 2012, 1:13am 2

I think this is what you want:

Good luck!