SPI - Arduino Sketches: Tools and Techniques for Programming Wizardry - page 132

This sketch is designed to work with an Arduino Due, but you can modify it
to be used on an Arduino Uno. Try to make this work on an Arduino Uno by
using standard SPI commands.
Summary
In this chapter, you have seen how to communicate with sensors using the
SPI bus, and you have created your i rst sensor board. In the next chapter, you
will see another serial communications protocol commonly used on Arduino
projects: the I 2 C protocol.