Ken Van Hoeylandt
fa4a6e255c
- Added modular device support and devicetree bindings for ILI9341, ILI9488, CST816S, XPT2046, and GPIO button input, updating several board configurations for display/touch/backlight/keyboard/battery. - Added a setting to control deprecated HAL usage (device property + Kconfig).
30 lines
1009 B
Markdown
30 lines
1009 B
Markdown
# Button Control
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Kernel driver for navigating apps with 1 or 2 GPIO buttons. Kernel-driver counterpart to
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`Drivers/ButtonControl`, exposing a `KEYBOARD_TYPE` device (`tactility/drivers/keyboard.h`)
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instead of an LVGL encoder indev.
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Devicetree binding: `tactility,button-control` (see `bindings/tactility,button-control.yaml`).
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## Modes
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- **One-button** (`pin-secondary` absent): short press = `LV_KEY_NEXT`, long press = `LV_KEY_ENTER`.
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- **Two-button** (`pin-secondary` present): primary short = `LV_KEY_ENTER`, primary long =
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`LV_KEY_ESC`, secondary short = `LV_KEY_NEXT`, secondary long = `LV_KEY_PREV`.
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Short vs. long press is only decided when the button is released, by comparing the hold
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duration against `long-press-ms` - not at the moment it's pressed.
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## Example
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```dts
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buttons {
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compatible = "tactility,button-control";
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pin-primary = <&gpio0 37 GPIO_FLAG_NONE>;
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pin-secondary = <&gpio0 39 GPIO_FLAG_NONE>;
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};
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```
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## License
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[Apache License Version 2.0](LICENSE-Apache-2.0.md) |