This week happens to be National Library week, and although Digilent is not a library, we certainly use them! I’m not referring to public libraries, though (although I am personally a fan of them); rather, I’m talking about the C++ libraries that are widely used with our microcontrollers. Although C++ libraries are not quite the same as an IP for FPGAs, they serve a similar purpose. These libraries include a set of predefined functions that perform a specific task, such as sending and receiving a set of data over SPI, that the user can use without having to define what they do.