Public Access
25 lines
1.1 KiB
Markdown
25 lines
1.1 KiB
Markdown
 
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# BROSE9323 driver
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An `Adafruit_GFX` driver for Brose flipdot panels, shared by both firmware targets.
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The constructor is `BROSE9323(width, height, panel_width, flip_time_us = 280)`. This
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project uses `BROSE9323 display(84, 19, 28)`.
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## Build modes
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| Flag | Used by | Behaviour |
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|------|---------|-----------|
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| *(none)* | Nano | Drives the panel through GPIO. Keeps an old and a new frame buffer and flips only the dots that changed. |
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| `-D ESPSERIAL` | ESP32 | Holds no buffer. `drawPixel`, `fillScreen`, `display` and `setTiming` are sent as serial commands to the Stream passed to `begin(&Serial)`. |
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| `-D FLIPDOT_PLCC_ADAPTER` | Nano (optional) | Uses the pin mapping of the PLCC adapter board. |
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The flags are set per environment in `platformio.ini` through `build_flags`. Don't
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`#define` them in the header.
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## Notes
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- In direct mode (`setDirect(true)`) every pixel is flipped right away, without a call to
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`display()`.
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- `print()` maps German umlauts (ÄäÖöÜüß) to the code page 437 glyphs used by the GFX
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font.
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- On an ATmega168 the old buffer is left out to save RAM. Every `display()` call then
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flips all dots.
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