Kmdf Hid Minidriver For Touch I2c Device Calibration Best Apr 2026

The following example code illustrates a basic calibration implementation in a KMDF HID minidriver:

#include <wdf.h>

// Process calibration data sensitivity = ProcessSensitivity(sensitivity); offset = ProcessOffset(offset); gain = ProcessGain(gain); kmdf hid minidriver for touch i2c device calibration best

// Calibration interface #define IOCTL_CALIBRATION_SET_SENSITIVITY CTL_CODE(FILE_DEVICE_UNKNOWN, 0x800, METHOD_BUFFERED, FILE_ANY_ACCESS) // ... The following example code illustrates a basic calibration

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

// Handle calibration events VOID HandleCalibrationEvent(WDFDEVICE device, WDF_OBJECT_ATTRIBUTES attributes, ULONG eventType) { switch (eventType) { case CALIBRATION_EVENT_USER_INPUT: // Handle user input during calibration break; case CALIBRATION_EVENT_DEVICE_NOTIFICATION: // Handle device notifications during calibration break; } }

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