The wabun code is switched from the English code with prosign "DO", and returns to the English code with "SN".
To insert the alphabet in wabun code, put that part in the prosign "KK" and "RR".
I tested with my Generic STM32F103C board and 2004 character (HD44780 compatible) LCD, it works fine.
I implemented "OPTION_WABUN_CODE" (Japanese text in morse code) https://en.wikipedia.org/wiki/Wabun_code
The wabun code is switched from the English code with prosign "DO", and returns to the English code with "SN". To insert the alphabet in wabun code, put that part in the prosign "KK" and "RR".
I tested with my Generic STM32F103C board and 2004 character (HD44780 compatible) LCD, it works fine.