Kmdf Hid Minidriver | For Touch I2c Device Calibration Best Link

// Pseudocode inside DPC PTOUCH_REPORT rawReport = (PTOUCH_REPORT)readBuffer; rawReport->X = ApplyCalibrationX(rawReport->X, rawReport->Y); rawReport->Y = ApplyCalibrationY(rawReport->X, rawReport->Y);

For touchscreens requiring extreme precision, especially near edges and corners: kmdf hid minidriver for touch i2c device calibration best

: It is highly recommended that calibration and configuration updates be handled via vendor-specific top-level collections X = ApplyCalibrationX(rawReport-&gt

Save the calibration data to align the digitizer precisely with the display. Implement Firmware-Level Calibration Y = ApplyCalibrationY(rawReport-&gt

Create a user-mode calibration tool that:

if (NT_SUCCESS(status)) // Read the raw binary calibration block status = WdfRegistryQueryValue(hKey, &valueName, &CalibrationData, sizeof(CALIBRATION_STRUCT), NULL, NULL); WdfRegistryClose(hKey);