How to send HID Feature Report with Hid.Net? #252

Describe the issue

I'm trying to send a Feature Report to a HID device using Hid.Net, but it seems that WriteAsync() does not send a feature report, and I cannot find any exposed method such as WriteFeatureReportAsync.

How can I send (set) a HID Feature report using Hid.Net?

I've also checked the documentation and source code but couldn't find a clear approach for this. If WriteAsync only supports Output reports, is there a recommended way to perform HidD_SetFeature or a built-in wrapper for that?

Screenshots

Below is the debugger view of my device instance, confirming that the WriteBufferSize is correctly set:

_device = Hid.Net.HidDevice
WriteBufferSize = 33

(You can add an actual screenshot here if needed)

Your Code

var factory = new FilterDeviceDefinition(vendorId: 0x1234, productId: 0x5678)
    .CreateWindowsHidDeviceFactory();

var deviceDefinitions = await factory.GetConnectedDeviceDefinitionsAsync();
var device = await factory.GetDeviceAsync(deviceDefinitions.First());

await device.InitializeAsync();

// Attempting to send a Feature Report
byte[] featureReport = new byte[33];
featureReport[0] = 0x01; // Report ID
featureReport[1] = 0xA0; // Sample payload

await device.WriteAsync(featureReport); // Does not appear to trigger SetFeature

Log / Stack Trace

There is no exception, but the device does not respond as it should when receiving a Feature report. I suspect the report is being sent as an Output report instead.

I've enabled logging but did not see anything indicating a Feature report was sent.

Info

• Platform: Windows 11
• Device Type: HID
• Hid.Net Version: 4.2.1

✅ What I want to know

1. Does Hid.Net support SetFeature natively?
2. If not, what's the recommended way to call HidD_SetFeature while using Hid.Net?
3. Is it possible to extend the current device class to expose this?