Download Arduino Uno Spi PNG. This library allows you to communicate with spi devices, with the arduino as the master device. Using the spi library on the arduino, doing a single transfer looks like this in code arduino uno.
Because the spi protocol works with a 16 bit pattern i need to expand the incoming signal.
Connecting via the icsp header Connecting via digital pins 10 to 13: In a spi system you always have only 1 master device. A serial peripheral interface (spi) bus is a system for serial communication, which uses up to four conductors, commonly three.
