USB Libraries Help > USB Device Libraries > USB Device Printer Library > Introduction
MPLAB Harmony USB Stack
Introduction

The MPLAB Harmony USB Printer Device Library (also referred to as the Printer function driver or library) provides functions and methods that allow application designers to implement a USB Printer Device. The current version of the library supports a unidirectional as well as bi-directional printer interface types. This library must be used in conjunction with the MPLAB Harmony USB Device Layer.