OLED additional features: Bullet counts - profezzorn/ProffieOS GitHub Wiki

As of ProffiesOS 6.x, it's possible to show bullet counts on an OLED display. Here's what you would need:

This includes the display code, but doesn't activate it. May become the default in the future.

#define INCLUDE_SSD1306

Here's how we activate the display:

#ifdef CONFIG_BOTTOM

DisplayHelper<128, uint32_t,
  BaseLayerOp<StandardDisplayController>,
  ClearRectangleOp<10, 80, 8, 24>,
  WriteBulletCountOp<10, 20, 5>
> display_controller;

SSD1306Template<128, uint32_t> display(&display_controller);
#endif

The DisplayHelper class takes a list of display operations, which works a lot like the Layers<> style. Currently, these operations are available:

Two different base layers:

1. BaseLayerOp<StandardDisplayController>
2. ClearScreenOp

The first one makes it work like a standard display controller (shows, font.bmp, messages, etc., the second one just makes it black.

This op clears a rectangle on the screen.

Writes the current bullet count at the specified location.

This executes OP if the base layer is showing an image, but not otherwise. The idea is that you could have a bullet count that draws over images, but not messages and battery monitors.

We will probably need more display OPs real soon for other purposes... In 7.x I plan to make it possible to specify a different display controller for each preset, essentially making it a "style" for the display.