6.33. WebUSB Serial

6.33.1. Overview

This example project shows WebUSB Serial device.

In this example, the USB device has 3 interfaces, 2 of which are used for CDC Class Device and 1 of which is used for Vendor Class. They together form the WebUSB Serial device.

6.33.2. 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

6.33.3. Running the example

  • Download the program to the development board to run, the computer can automatically recognize and install drivers, and the device manager can view a COM device and a HPMicro WebUSB device.

    PC_device_manager.png

  • Please open the webpage (using a TinyUSB service) : https://example.tinyusb.org/webusb-serial/index.html .

  • Click the Connect button on the webpage, then select the HPMicro WEBUSB DEMO device, and click the Connect button. The webpage will establish a connection with the device, and the LED on the development board will light up.

    Connect.png

  • The user inputs characters in the Sender window while the Receiver window will display the same characters.

  • Click the Disconnect button on the webpage to disconnect from the device, and the LED on the development board will turn off.

  • The user opens the serial port debugging assistant, selects the enumerated COM port, sends a character, and can see that the serial port debugging assistant displays the same character.

    UartAssist.png