Kmdf Hid Minidriver For Touch I2c Device Calibration -

X_screen = (X_raw - X_min) * (X_resolution / (X_max - X_min)) Y_screen = (Y_raw - Y_min) * (Y_resolution / (Y_max - Y_min))

X_cal = A * X_raw + B * Y_raw + C Y_cal = D * X_raw + E * Y_raw + F kmdf hid minidriver for touch i2c device calibration

VOID ApplyCalibration(RAW_TOUCH_REPORT *raw, HID_TOUCH_REPORT *calib, PCALIB_PARAMS params) X_screen = (X_raw - X_min) * (X_resolution /

This article is intended for experienced Windows driver developers. All code examples are illustrative; refer to the latest Windows Driver Kit for production implementations. kmdf hid minidriver for touch i2c device calibration

Sometimes, an I2C touch device needs to be recalibrated due to temperature changes or EMI (Electromagnetic Interference). You can implement a (Input/Output Control) in your KMDF driver.

return status;

Pseudo-code: