Unity Native Plugin for DirectInput

I need a native plugin (C++ DLL) that interfaces with DirectInput to read input from a Fanatec wheel (throttle, brake, clutch, gear) and send force feedback commands. The plugin will be used in a Unity project that builds with IL2CPP, so the solution must be compatible with IL2CPP and avoid marshaling issues with delegates.

Requirements:
DirectInput Integration:

The plugin must use DirectInput to communicate with a Fanatec wheel or similar racing wheel hardware.

It should read the following inputs:

Throttle (0 to 1)

Brake (0 to 1)

Clutch (0 to 1)

Gear (integer, e.g., -1 for reverse, 0 for neutral, 1-6 for gears)

It should support sending force feedback commands to the wheel.

Native Plugin (C++ DLL):

The plugin should be written in C++ and compiled into a DLL.

It should expose the following functions for Unity to call:

cpp
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void InitializeDirectInput();
void ReadInput(float* throttle, float* brake, float* clutch, int* gear);
void SetForceFeedback(float force);
Unity Integration:

The plugin should be compatible with Unity's IL2CPP backend.

Provide a sample Unity C# script that demonstrates how to:

Initialize the plugin.

Read input data (throttle, brake, clutch, gear) in the Update loop.

Send force feedback commands to the wheel.

Performance:

The plugin must be efficient and capable of running at 60 FPS or higher without significant CPU overhead.

Error Handling:

Include proper error handling for cases where the device is not connected or input is lost.

Documentation:

Provide clear documentation on:

How to use the plugin in Unity.

How to rebuild the DLL if needed.

Any dependencies or setup required.

Deliverables:
A compiled C++ DLL for Windows (x86 and x64).

Source code for the C++ plugin.

A Unity project with a sample script demonstrating how to use the plugin.

Documentation for setup and usage.