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Pages choose their own refresh effect (or the Hardware setting), used when the page appears and for its own changes. Schedule blocks that switch instantly and rules still switch instantly. The ESP32 sends page effects to the Nano with a new no-save flag (E ...,2), so page switches don't wear the Nano's EEPROM. Page format 7 (version 6 pages are converted). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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 todisplay(). setGap(us)adds a pause after each flip pulse,setPulses(n)pulses each changed dotntimes. Full redraws (display(true), the firstdisplay()after boot) pulse the dots that look unchanged only once.setEffect(effect, ms): howdisplay()shows a frame (RefreshEffectindot_sequence.h). Anything butEFFECT_INSTANTruns in steps fromupdate(), which must be called often;busy()says whether an effect is running.display(true)is always instant. On the ESP32 these calls become theG,NandEcommands.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.