Kmdf Hid Minidriver For Touch I2c Device Calibration Best Review

// Calibration commands #define CALIBRATION_CMD_GET_SENSITIVITY 0x01 #define CALIBRATION_CMD_SET_OFFSET 0x02 // ...

Calibration is the process of adjusting the device's settings to ensure accurate and consistent touch input. For touch I2C devices, calibration typically involves adjusting the device's sensitivity, offset, and gain to account for variations in the device's electrical and mechanical characteristics.

// Calibration interface #define IOCTL_CALIBRATION_SET_SENSITIVITY CTL_CODE(FILE_DEVICE_UNKNOWN, 0x800, METHOD_BUFFERED, FILE_ANY_ACCESS) // ...

// Process calibration data sensitivity = ProcessSensitivity(sensitivity); offset = ProcessOffset(offset); gain = ProcessGain(gain);

#include <wdf.h>

// Calibration logic VOID CalibrateDevice(WDFDEVICE device, PWDF_OBJECT_ATTRIBUTES attributes) { // Get calibration data from device ULONG sensitivity, offset, gain; GetCalibrationData(device, &sensitivity, &offset, &gain);

// Store calibration settings StoreCalibrationSettings(device, sensitivity, offset, gain); }