Hid.Net, Usb.Net, SerialPort.Net (Device.Net)

Project Update: this project is on pause. Please read the whole story here.

Cross-platform .NET framework for talking to connected devices such as USB, Serial Port and Hid devices

Version 4.x

is live on Nuget.org! Take a look at the 4.0 project to see new features and fixes. Version 4 has public interface changes. You will need to read through the documentation to upgrade from version 3 to version 4.

New in 4.2.1

You can do USB control transfer from an Android host.
Cancellation tokens are fixed for Hid devices

This framework provides a common Task async programming interface across platforms and device types. This allows for dependency injection to use different types of devices on any platform with the same code. The supported device types are Hid, Serial Port, and USB.

Contribute

This project needs funding. Please sponsor me here so that I can contribute more time to improving this framework.

Coin	Address
Bitcoin	33LrG1p81kdzNUHoCnsYGj6EHRprTKWu3U
Ethereum	0x7ba0ea9975ac0efb5319886a287dcf5eecd3038e
Litecoin	MVAbLaNPq7meGXvZMU4TwypUsDEuU6stpY

This project also needs unit tests, bug fixes and work towards more platforms. Please read this.

Licensing

This framework uses the MIT license. I won't sue you, or your business if you use this for free. If you are developing software for free, I don't expect you to sponsor me. However, if your business makes more than USD 100,000 per year and your software depends on Device.Net, I expect your business to make a serious contribution via sponsorship.

Why Device.Net?

Device communication is fragmented across platforms and device types. If you need to use three different device types across Android, UWP and .NET, you would otherwise need nine different APIs. Device.Net puts a standard layer across all these so that you can share code across all platforms and device types. You don't need to use Windows APIs or learn about Android's API directly. If the device manufacturer decides to switch from USB to Hid, the code remains the same. Write once; run everywhere.

Get Help

Currently supports:

Platform	Hid	USB	Serial Port	Bluetooth
.NET Framework	Yes	Yes	Yes	No
.NET Core	Yes	Yes	Yes	No
Android	Yes	Yes	No	No
UWP	Yes	Yes	No	No
Linux, MacOS*	No	(Via LibUsbDotNet)	No	No
WebAssembly	No	No	No	No

Note: Bluetooth, Linux, and macOS, WebAssembly (via WebUsb) support are on the radar. If you can sponsor this project, you might be able to help get there faster.

SerialPort.Net and Device.Net.LibUsb are still in alpha mode. You must use the prerelease version

Example Code

using Device.Net;
using Hid.Net.Windows;
using Microsoft.Extensions.Logging;
using System.Linq;
using System.Reactive.Linq;
using System.Threading.Tasks;
using Usb.Net.Windows;

namespace Usb.Net.WindowsSample
{
    internal class Program
    {
        private static async Task Main()
        {
            //Create logger factory that will pick up all logs and output them in the debug output window
            var loggerFactory = LoggerFactory.Create((builder) =>
            {
                _ = builder.AddDebug().SetMinimumLevel(LogLevel.Trace);
            });

            //----------------------

            // This is Windows specific code. You can replace this with your platform of choice or put this part in the composition root of your app

            //Register the factory for creating Hid devices. 
            var hidFactory =
                new FilterDeviceDefinition(vendorId: 0x534C, productId: 0x0001, label: "Trezor One Firmware 1.6.x", usagePage: 65280)
                .CreateWindowsHidDeviceFactory(loggerFactory);

            //Register the factory for creating Usb devices.
            var usbFactory =
                new FilterDeviceDefinition(vendorId: 0x1209, productId: 0x53C1, label: "Trezor One Firmware 1.7.x")
                .CreateWindowsUsbDeviceFactory(loggerFactory);

            //----------------------

            //Join the factories together so that it picks up either the Hid or USB device
            var factories = hidFactory.Aggregate(usbFactory);

            //Get connected device definitions
            var deviceDefinitions = (await factories.GetConnectedDeviceDefinitionsAsync().ConfigureAwait(false)).ToList();

            if (deviceDefinitions.Count == 0)
            {
                //No devices were found
                return;
            }

            //Get the device from its definition
            var trezorDevice = await hidFactory.GetDeviceAsync(deviceDefinitions.First()).ConfigureAwait(false);

            //Initialize the device
            await trezorDevice.InitializeAsync().ConfigureAwait(false);

            //Create the request buffer
            var buffer = new byte[65];
            buffer[0] = 0x00;
            buffer[1] = 0x3f;
            buffer[2] = 0x23;
            buffer[3] = 0x23;

            //Write and read the data to the device
            var readBuffer = await trezorDevice.WriteAndReadAsync(buffer).ConfigureAwait(false);
        }
    }
}

Koseng/Device.Net