USB-UART Bridge Driver Installation Steps

Note

This document is automatically translated using AI. Please excuse any detailed errors. The official English version is still in progress.

This document explains how to determine whether the USB-UART bridge driver has been installed and provides the corresponding installation steps.

Determining Whether the Driver Has Been Installed

Open the Device Manager to check. If two USB JTAG/serial debug unit devices are displayed under the Universal Serial Bus devices category, it means that the USB-UART bridge driver has not been installed.

Driver Installation Steps

Identifying the USB-Serial Port

When two USB JTAG/serial debug unit devices appear, one is the USB-JTAG port, and the other is the USB-Serial port.

Select any device, right-click Properties. If its Value field displays USB JTAG/serial debug unit, then this device is the USB-Serial port; if it displays other values, it is the USB-JTAG port.

Note

The installation of the USB-UART bridge driver is only for the USB-Serial port, to ensure the correct recognition and use of the serial communication function.

Driver Installation

Note

If an old version of the driver already exists on your computer, please uninstall the original driver before installing.

Download and save the driver package.

In the Device Manager, select the USB JTAG/serial debug unit representing the USB-Serial port, right-click and select Update Driver Software.

Choose Browse my computer for driver software.

Choose Let me pick from a list of device drivers on my computer, and specify the driver path as the driver download location.

In the device type, select USB Serial Device, click Next to complete the installation.

At this point, the USB-UART bridge driver installation is complete.

Check if the installation was successful

Reopen the device manager for confirmation. If only one USB JTAG/serial debug unit device remains under the Universal Serial Bus devices category, and USB Serial Device (COMx) appears under the Ports (COM and LPT) category, where x is the specific port number, it indicates that the USB-UART bridge driver has been successfully installed. Subsequently, the firmware can be burned through this COM port and the log output can be monitored.