kmdf hid minidriver for touch i2c device calibration
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kmdf hid minidriver for touch i2c device calibration

Minimum Mean Square Error (MMSE) uses more than three reference points to compute a highly accurate transformation matrix. This method provides superior accuracy, especially for large displays, at the cost of slightly higher computational complexity.

[MyDevice_Install.NT] CopyFiles = MyDriver.Copy AddReg = MyDevice_AddReg

Manages the physical clock and data lines (SDA/SCL) on the SoC.

// Example: I²C read operation (conceptual) NTSTATUS I2CRead( WDFIOTARGET I2CTarget, UCHAR Register, PVOID Buffer, ULONG Length)

Xcal=A⋅Xraw+B⋅Yraw+CYcal=D⋅Xraw+E⋅Yraw+F2 lines; Line 1: cap X sub c a l end-sub equals cap A center dot cap X sub r a w end-sub plus cap B center dot cap Y sub r a w end-sub plus cap C; Line 2: cap Y sub c a l end-sub equals cap D center dot cap X sub r a w end-sub plus cap E center dot cap Y sub r a w end-sub plus cap F end-lines; The coefficients