\subsectionauthor{Author: Fredrik Grönlund \& Emil Lundell\\Reviewer: TODO???}
\subsectionauthor{Author: Fredrik Grönlund \& Emil Lundell\\Reviewer: Henrik Tjäder}
\subsubsection{General description}
Communication over SPI is done in multiples of bytes.
All communication is initiated by the master sending a command block of 1-3 bytes, depending on the type of command, followed by data from either the master or the slave.