So let’s say your using an Arduino in your project. You already have the hardware-based serial interface working with one portion of the project and need a second serial port for unrelated hardware.

This library provides full access to the functions of the MY1690 MP3 decoder through a serial connection and a "busy" pin. This library is very simple to use with either a hardware or software serial ...

The SPI protocol is a "standard" for serial communication, however there exists many variants. This document only describe the four modi typical used in the Arduino context. The SWSPI library ...

The Arduino software environment, including the IDE, libraries, and general approach, are geared toward education. It’s meant as a way to introduce embedded development to newbies. This is a great ...