56 lines
2.3 KiB
Markdown
56 lines
2.3 KiB
Markdown
# Quantum Painter LVGL Integration :id=lvgl
|
|
|
|
LVGL (Light and Versatile Graphics Library) is an open-source graphics library providing everything you need to create an embedded GUI for your board with easy-to-use graphical elements.
|
|
|
|
LVGL integrates with [Quantum Painter's](quantum_painter.md) API and drivers to render to the display, the hardware supported by Quantum Painter is also supported by LVGL.
|
|
|
|
?> Keep in mind that enabling the LVGL integration has a big impact in firmware size, it is recommeded to use a supported MCU with >256 kB of flash space.
|
|
|
|
To learn more about LVGL and how to use it please take a look at their [official documentation](https://docs.lvgl.io/8.2/intro/)
|
|
|
|
## Enabling LVGL :id=lvgl-enabling
|
|
To enable LVGL to be built into your firmware, add the following to `rules.mk`:
|
|
|
|
```make
|
|
QUANTUM_PAINTER_ENABLE = yes
|
|
QUANTUM_PAINTER_DRIVERS = ......
|
|
QUANTUM_PAINTER_LVGL_INTEGRATION = yes
|
|
```
|
|
To configure the Quantum Painter Display Drivers please read the [Quantum Painter Display Drivers](quantum_painter.md#quantum-painter-drivers) section.
|
|
|
|
## Quantum Painter LVGL API :id=lvgl-api
|
|
|
|
### Quantum Painter LVGL Attach :id=lvgl-api-init
|
|
|
|
```c
|
|
bool qp_lvgl_attach(painter_device_t device);
|
|
```
|
|
|
|
The `qp_lvgl_attach` function is used to set up LVGL with the supplied display, and requires an already configured display.
|
|
|
|
```c
|
|
static painter_device_t display;
|
|
void keyboard_post_init_kb(void) {
|
|
display = qp_make_.......; // Create the display
|
|
qp_init(display, QP_ROTATION_0); // Initialise the display
|
|
|
|
if (qp_lvgl_attach(display)) { // Attach LVGL to the display
|
|
...Your code to draw // Run LVGL specific code to draw
|
|
}
|
|
}
|
|
```
|
|
To init. the display please read the [Display Initialisation](quantum_painter.md#quantum-painter-api-init) section.
|
|
|
|
!> Attaching LVGL to a display means LVGL subsequently "owns" the display. Using standard Quantum Painter drawing operations with the display after LVGL attachment will likely result in display artifacts.
|
|
### Quantum Painter LVGL Detach :id=lvgl-api-init
|
|
|
|
```c
|
|
void qp_lvgl_detach(void)
|
|
```
|
|
|
|
The `qp_lvgl_detach` function stops the internal LVGL ticks and releases resources related to it.
|
|
|
|
## Enabling/Disabling LVGL features :id=lvgl-configuring
|
|
|
|
You can overwrite LVGL specific features in your `lv_conf.h` file.
|