Kmdf Hid Minidriver For Touch I2c Device Calibration Best -

// 2. Compute affine matrix using Least Squares double matrix[6]; status = ComputeCalibrationMatrix(input->RawPoints, input->DisplayPoints, input->NumPoints, matrix);

// 4. Send HID Feature Report to I2C device (Report ID 0x03) UCHAR featureReport[32] = 0; featureReport[0] = 0x03; // Report ID for calibration RtlCopyMemory(&featureReport[1], matrix, sizeof(matrix)); status = WriteI2C_HIDFeatureReport(DeviceContext, featureReport, 32); kmdf hid minidriver for touch i2c device calibration best

[ X_calibrated = A \cdot X_raw + B \cdot Y_raw + C ] [ Y_calibrated = D \cdot X_raw + E \cdot Y_raw + F ] status = ComputeCalibrationMatrix(input-&gt

// 3. Persist to registry status = StoreCalibrationRegistry(matrix); featureReport[0] = 0x03