Before passing HID input reports to the class driver, subtract the reference baseline stored in the device's non-volatile memory or calculated during idle periods. 2. Coordinate Mapping and Scaling
For touchscreens requiring extreme precision, especially near edges and corners: kmdf hid minidriver for touch i2c device calibration best
Do not rely solely on the hardware to store calibration. The driver should implement a "First Load" mechanism: Before passing HID input reports to the class
// Define the calibration function VOID CalibrateTouchDevice( _In_ PDEVICE_OBJECT DeviceObject, _In_ PCALIBRATION_DATA CalibrationData ) // Get the I2C interface PI2C_INTERFACE i2cInterface = GetI2CInterface(DeviceObject); kmdf hid minidriver for touch i2c device calibration best