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USB CEFC VCI Serial Adapter Driver: Benefits, Features, and Tips

USB CEFC VCI Serial Adapter Driver: What You Need to Know

If you have a device that belongs to the communications and CDC control device class, such as a diagnostic unit or a serial encoder adapter board, you might need a USB CEFC VCI serial adapter driver to make it work properly on your Windows computer. This driver is a Microsoft-provided in-box driver that loads automatically based on a compatible ID match. It allows you to communicate with your device through a serial port or some abstraction of a serial port.

Usb Cefc Vci Serial Adapter Driver


In this article, you will learn how to install and use the USB CEFC VCI serial adapter driver on Windows, as well as some troubleshooting tips in case you encounter any problems. By the end of this article, you will be able to connect and interact with your device smoothly and efficiently.

How to Install USB CEFC VCI Serial Adapter Driver on Windows

Installing the USB CEFC VCI serial adapter driver on Windows is relatively easy, as it is included in Windows by default. However, depending on your device's class and subclass codes, you might have to follow different steps to load the driver. Here are the general steps to install the driver on Windows:

  • Check the hardware ID of your device. You can do this by plugging your device into your computer and opening Device Manager. Find your device under Universal Serial Bus controllers or Other devices, right-click on it, and select Properties. Go to the Details tab and select Hardware Ids from the drop-down menu. You should see something like USB\VID_0403&PID_D6DA or USB\VID_0403&PID_D6DE, where VID stands for vendor ID and PID stands for product ID.

  • Download the driver from a reliable source. If your device has a class code of 02 and a subclass code of 02, then you don't need to download anything, as Windows will load the driver automatically. However, if your device has a different subclass code, then you might have to download the driver from the manufacturer's website or from a trusted third-party source. For example, you can download the Autocom VCI (Diagnostic Unit) driver from Treexy, which provides drivers for various devices.

  • Install the driver using Device Manager or INF file. There are two ways to install the driver on your computer: using Device Manager or using an INF file. If you downloaded the driver from a source other than Windows, then you should have an INF file that contains information about the driver and how to install it. To use Device Manager, open it again and find your device under Universal Serial Bus controllers or Other devices. Right-click on it and select Update driver. Choose Browse my computer for drivers and locate the folder where you downloaded or extracted the driver. Follow the instructions on the screen to complete the installation. To use an INF file, open File Explorer and navigate to the folder where you downloaded or extracted the driver. Right-click on the INF file and select Install. Wait for the installation to finish.

  • Verify the installation and test the device. After installing the driver, you should see your device under Ports (COM & LPT) in Device Manager, with a name like USB Serial Port (COM3). You can check the properties of your device and see if it is working properly. You can also test your device by using a terminal program like PuTTY or HyperTerminal to send and receive data through the serial port.

How to Use USB CEFC VCI Serial Adapter Driver with UWP Applications

If you want to develop Windows applications that can communicate with your USB CDC device through a serial port, you can use the Universal Windows Platform (UWP) framework that provides APIs for various functionalities. UWP applications can run on any Windows 10 device, such as PCs, tablets, phones, or IoT devices.

To use USB CEFC VCI serial adapter driver with UWP applications, you need to use the Windows.Devices.SerialCommunication namespace that defines classes that can access serial port functionality. This namespace allows you to discover serial devices connected to your computer, read and write data to them, and control serial-specific properties such as baud rate, parity bit, data bits, stop bits, and handshaking.

Here is an example code snippet that shows how to use this namespace to read and write data to a USB CDC device:

```csharp using System; using System.Threading; using System.Threading.Tasks; using Windows.Devices.Enumeration; using Windows.Devices.SerialCommunication; using Windows.Storage.Streams; namespace SerialApp class Program static async Task Main(string[] args) // Find all serial devices connected to the computer string selector = SerialDevice.GetDeviceSelector(); var devices = await DeviceInformation.FindAllAsync(selector); // Select the first device (change this according to your device ID) var device = devices[0]; // Create a serial device object var serialDevice = await SerialDevice.FromIdAsync(device.Id); // Configure serial settings (change these according to your device specifications) serialDevice.BaudRate = 9600; serialDevice.Parity = SerialParity.None; serialDevice.DataBits = 8; serialDevice.StopBits = SerialStopBitCount.One; serialDevice.Handshake = SerialHandshake.None; // Create data reader and writer objects var dataReader = new DataReader(serialDevice.InputStream); var dataWriter = new DataWriter(serialDevice.OutputStream); // Create a cancellation token for stopping the read/write loop var cancellationTokenSource = new CancellationTokenSource(); // Start a task that reads data from the device in a loop var readTask = Task.Run(async () =>

while (!cancellationTokenSource.Token.IsCancellationRequested) // Load 1024 bytes from the input stream uint bytesRead = await dataReader.LoadAsync(1024); // Check if any data was received if (bytesRead > 0) // Read a string from the input stream string data = dataReader.ReadString(bytesRead); // Print the received data to console Console.WriteLine($"Received: data"); , cancellationTokenSource.Token); // Start a task that writes data to the device in a loop var writeTask = Task.Run(async () =>

while (!cancellationTokenSource.Token.IsCancellationRequested) // Read a line from console input string data = Console.ReadLine(); // Write a string to output stream dataWriter.WriteString(data); // Store 1024 bytes in output stream buffer uint bytesWritten = await dataWriter.StoreAsync(); // Check if any data was sent if (bytesWritten > 0) // Print number of bytes sent Console.WriteLine($"Sent bytesWritten bytes"); , cancellationTokenSource.Token); // Wait for any key press Console.ReadKey(); // Cancel read/write tasks cancellationTokenSource.Cancel(); // Dispose resources dataReader.Dispose(); dataWriter.Dispose(); serialDevice.Dispose(); ``` Troubleshooting Tips for USB CEFC VCI Serial Adapter Driver

Q: How do I use USB CEFC VCI serial adapter driver with UWP applications?A: You can use the Windows.Devices.SerialCommunication namespace to access serial port functionality with your USB CDC device.

Q: What are some common issues with USB CEFC VCI serial adapter driver and how do I fix them?A: Some common issues are device not recognized, driver not loaded, device not working, or data transmission errors. You can fix them by checking the hardware ID, downloading the latest driver, configuring the serial settings, declaring the permissions and capabilities, or contacting support.

Q: Where can I download USB CEFC VCI serial adapter driver from?A: You can download it from the device manufacturer's website or from a trusted third-party source, such as Treexy.

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