Create a KMDF driver skeleton ( DriverEntry , EvtDeviceAdd ). Add I2C resource parsing and interrupt setup.
Ensure your affine transform scales each touch point independently. The HID protocol for multi-touch (Usage Page 0x0D , Usage 0x05 ) requires that each contact’s Tip Switch and X/Y arrays be transformed individually. Use a parallel loop (KeAcquireSpinLock for each touch frame) to maintain performance. kmdf hid minidriver for touch i2c device calibration best
Implement calibration persistence in a companion user-mode Windows service. The KMDF driver remains stateless regarding persistent storage, enhancing stability. Create a KMDF driver skeleton ( DriverEntry , EvtDeviceAdd )
Calibration of Touch I2C devices ensures that the device accurately reports touch input data to the operating system. Proper calibration: kmdf hid minidriver for touch i2c device calibration best