5.3.1 Introduction

This document provides a detailed guide on setting up and utilizing the AVR DU microcontroller to create a USB CDC (Communications Device Class) to USART bridge device. The accompanying code covers setup and configuration in MPLAB Code Configurator (MCC) and includes examples of communication with the device through terminal and scripting.

Example code on Microchip Discover
Example code on GitHub

Utilizing the Curiosity Nano development platform, this example allows the evaluation of the AVR DU with just the Curiosity Nano and two USB C cables.

Note: By using the on-board debugger of the Curiosity Nano to access the USART pins of the AVR DU, we effectively create a CDC - USART - CDC bridge. The on-board debugger supports USART communication up to approximately 500 kbaud. Connecting two AVR DU controllers can increase this limit.