2.5.1 Introduction

The MPLAB Harmony USB Communications Device Class (CDC) Device Library (also referred to as the CDC function driver or library) provides functions and methods that allow application designers to implement a USB CDC Device. The current version of the library supports the Abstract Control Model (ACM) of the CDC specification revision 1.2 and specifically implements a subset of the AT250 command set. This library must be used in conjunction with the MPLAB Harmony USB Device Layer.