NP-41 Emulator (may be)

[Waon Shinyoe]

Update from Zweb's STM32 version:

-The display has been driven successfully.
-But there is an error on PCB design. The COM1~6 pin were reversed... so the signals have to be reversed by software. The reversion process is slow, and cause the low refresh rate of the screen. Trying to use LUT.

-Still working on keyboard input. Register for GetKey doesn't work properly. -When switched back from alpha mode or nomenclature mode the screen will be filled with grabble.