To allow the OS or a custom utility to trigger calibration, you must define a .
Calibration Best Practices for KMDF HID Minidrivers on Touch I2C Devices
: Explicitly defines the maximum horizontal and vertical resolution reporting constraints.
2. Inject SileadTouch.sys Parameters via the System Registry kmdf hid minidriver for touch i2c device calibration best
return status;
$$X_cal = (X_raw \times A) + (Y_raw \times B) + C$$ $$Y_cal = (X_raw \times D) + (Y_raw \times E) + F$$
For Kernel-Mode Driver Framework (KMDF) HID minidrivers on Windows, the HID over I2C driver To allow the OS or a custom utility
: For out-of-band communication like sending new calibration data from a user-mode application, expose a secondary Top-Level Collection (TLC) in your HID descriptor. Typical Calibration Workflow
Use the Silead Touch Firmware Configuration Tool or similar OEM-provided tool to re-flash the .fw file that defines the screen dimensions and touch resolution. 3. Utilize Windows Tablet PC Settings
Do you plan to store the in the system registry or fetch them from ACPI? Share public link Inject SileadTouch
On reboot, EvtDevicePrepareHardware reads this property. If present, your driver sends a Feature Report to the I2C device to inject these coefficients before touch reporting starts.
: Use a user-mode tool to display targets at known screen coordinates (e.g., and ) and record the raw device response.