[BRLTTY] TSI braille display protocol

[deniz sincar]

Hello. as i don't understand brltty driver code, i want to learn the tsi braille display driver serial communication protocol in a human understandable language.
for example what is the algorhythm to rase dots 125, 15, 123 and so on. how to empty the braille display.
i very hardly understand the source code. only what i could do is rase a very strange dot pattern on the first 2 sells of the display.
i want to learn the protocol of braille output, and the routing keys because i want to connect it to arduino and output some information. or maybe i could do some bluetooth emulators, or other things.
please help me on that, thanks in advance.
best regards
Deniz Sincar