Flipdot-display/lib/BROSE9323

BROSE9323 driver

An Adafruit_GFX driver for Brose flipdot panels, shared by both firmware targets. The constructor is BROSE9323(width, height, panel_width, flip_time_us = 280). This project uses BROSE9323 display(84, 19, 28).

Build modes

Flag	Used by	Behaviour
(none)	Nano	Drives the panel through GPIO. Keeps an old and a new frame buffer and flips only the dots that changed.
-D ESPSERIAL	ESP32	Holds no buffer. drawPixel, fillScreen, display and setTiming are sent as serial commands to the Stream passed to begin(&Serial).
-D FLIPDOT_PLCC_ADAPTER	Nano (optional)	Uses the pin mapping of the PLCC adapter board.

The flags are set per environment in platformio.ini through build_flags. Don't #define them in the header.

Notes

• In direct mode (setDirect(true)) every pixel is flipped right away, without a call to display().
• print() maps German umlauts (ÄäÖöÜüß) to the code page 437 glyphs used by the GFX font.
• On an ATmega168 the old buffer is left out to save RAM. Every display() call then flips all dots.