[BRLTTY] ReadRing rotary braille display

[Songpakorn Punongong]

Thanks for your reply, Dave.

ESP32 is a modern affordable microcontroller many developers use for
prototyping wireless embedded systems. It can be programmed using C
language on Arduino IDE.

If you can access the attached .ino file in previous email, it contains the
code for the current prototype. I am using serial bluetooth to communicate
with a connected smartphone. I need to send text manually from serial
bluetooth app on the smartphone to be converted to braille array on the
device. A whole paragraph can be sent at once. ReadRing has 8 programmable
buttons to navigate. If attachment does not work in this mail loop, I can
paste the code in email if needed.

The problem is I do not know what kind of Bluetooth string is sent from
screen readers to such braille displays in general to display any language.
If I see a sample code, I can learn and adapt from there.

There is one prototype being kept with Brian MacDonald at National Braille
Press in case you want to have a hand on it.

Blessings,
Song

On Sun, Sep 19, 2021, 10:46 Dave Mielke <Dave at mielke.cc> wrote:

> [quoted lines by Songpakorn Punongong on 2021/09/18 at 09:51 +0700]
>
> >I need help in developing a bluetooth braille display based on ESP32.
>
> What's ESP32?
>
> >I want it to communicate like other braille displays. Please help me find
> example codes for bluetooth/BLE braille displays.
>
> Are you wanting to have a brltty driver for it? If so, Bluetooth serial
> (i.e. using an RFCOMM channel) is fine. That, in fact, is how most
> manufacturers do it.
>
> Have you already designed the (serial) protocol that you'd like to use?
>
> --
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