42.2. USB CDC Dual_Serial

42.2.1. Overview

This example project shows USB CDC Serial

• PC sees two serial ports via Device Manager

42.2.2. Board Setting

• Connect a USB port on PC to the PWR DEBUG port on the development board with a USB Type-C cable

• Connect a USB port on PC to one of USB port on the development board with a USB Type-C cable

42.2.3. Running the example

When the project runs correctly

• The computer can automatically recognize and install the USB to serial port driver and enumerate a composite device with two com ports

• Enter any uppercase or lowercase letters at the serial terminal. The device can convert the entered uppercase or lowercase letters to lowercase letters through one of enumerated serial ports, and convert lower case letters to upper case letters through the other serial port.