From 102f22f7e99d87989cd95e10370863c3f96ba7e2 Mon Sep 17 00:00:00 2001 From: jpe230 Date: Mon, 12 Dec 2022 14:51:14 -0600 Subject: [Core] Quantum Painter - LVGL Integration (#18499) Co-authored-by: Nick Brassel --- docs/_summary.md | 1 + docs/quantum_painter_lvgl.md | 55 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 56 insertions(+) create mode 100644 docs/quantum_painter_lvgl.md (limited to 'docs') diff --git a/docs/_summary.md b/docs/_summary.md index d388d08391..d2d4bb9b32 100644 --- a/docs/_summary.md +++ b/docs/_summary.md @@ -100,6 +100,7 @@ * Hardware Features * Displays * [Quantum Painter](quantum_painter.md) + * [Quantum Painter LVGL Integration](quantum_painter_lvgl.md) * [HD44780 LCD Driver](feature_hd44780.md) * [ST7565 LCD Driver](feature_st7565.md) * [OLED Driver](feature_oled_driver.md) diff --git a/docs/quantum_painter_lvgl.md b/docs/quantum_painter_lvgl.md new file mode 100644 index 0000000000..3edb37fbce --- /dev/null +++ b/docs/quantum_painter_lvgl.md @@ -0,0 +1,55 @@ +# 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() +``` + +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. -- cgit v1.2.3