Kmdf Hid Minidriver For Touch I2c Device Calibration //top\\ Jun 2026

This is the "glue" code. It talks to the I2C controller using the SPB (Simple Peripheral Bus) framework and reports data back to the HID Class Driver.

The driver must implement the to act as a HID transport. kmdf hid minidriver for touch i2c device calibration

Part of the Windows Hardware Lab Kit (HLK), used to ensure the device meets "Windows Touch" certification standards for linearity and latency. Conclusion This is the "glue" code

: Windows stores specific calibration results in the registry at: HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\TOUCH\CalibrationData . Implementation and Troubleshooting or Orientation .

A simple linear calibration:

In your EvtDevicePrepareHardware callback, read the calibration values from the : Use WdfDeviceOpenRegistryKey . Fetch values like XOffset , YGain , or Orientation .