Kmdf Hid Minidriver For Touch I2c Device Calibration Jun 2026

Define explicit vendor-specific collections for calibration in the HID report descriptor.

In a KMDF HID architecture , your driver acts as a lower filter beneath MsHidKmdf.sys .

Navigate to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ACPI\ \ \Device Parameters kmdf hid minidriver for touch i2c device calibration

In the DPC (Deferred Procedure Call), you:

The preferred method for user-driven calibration is the built-in Windows tool. This generates the necessary registry entries that the OS uses to map HID inputs to screen pixels. Open Control Panel . Select Tablet PC Settings . Click Calibrate under the Display tab. This generates the necessary registry entries that the

switch (ControlCode)

Modern computing devices (tablets, laptops, all-in-ones) increasingly rely on I²C-connected touch controllers. While Windows provides the HIDI2C.sys class driver for standard HID-over-I²C devices, many low-cost or legacy touch controllers require proprietary calibration routines that are not supported by the generic class driver. This paper presents the architecture of a Kernel-Mode Driver Framework (KMDF) HID Minidriver that intercepts HID reports from an I²C touch device, injects calibration coefficients, and provides a clean HID interface to the operating system’s touch input stack. We focus on calibration data persistence, vendor-specific command handling, and seamless integration with Windows Touch (Precision Touchpad and Digitizer). Click Calibrate under the Display tab

Below is a conceptual walkthrough of implementing the calibration transformation within a KMDF driver workflow. Step 1: Define the Device Extension Context