See what LVGL can do for you
Make UI development easier with 30+ widgets, anti-aliasing, animations, multi language, Arabic and Persian text, encoder and keypad usage, etc
Requirements
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16,32 or 64 bit microcontroller or processor
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> 16 MHz speed is recommended
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Flash/ROM: > 64 kB (180 kB is recommended)
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RAM: 8 kB (24 kB is recommended)
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1 Frame buffer: in MCU or in external controller
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Graphics buffer for LVGL: > “Horizontal resolution” pixels
(1/10 “Screen size” is recommended) -
C99 or newer compiler
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Basic C (or C++) knowledge:
pointers, structs, callbacks
Free with MIT license
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Open source
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Written in C (C++ compatible)
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Hosted on GitHub
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Free to use under MIT license
Widgets
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More than 30 powerful, fully customizable widgets
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Button, Bar, Slider, Chart, Text area, Keyboard and so on
Display
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Any resolution: from small monochrome displays to Full HD monitors
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Simple interface: one driver function to copy the rendered image to your display
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GPU support
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Multi display support
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Custom color format support
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Flexible buffering modes for high quality, great performance and low memory usage
Input devices
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Multiple input device for the same screen
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Simple interface: one driver function to get the state of an input device
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Drag, scroll objects
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Recognize gestures
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Keypad and encoder support for for touchpad-less navigation
Drawing feature
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Anti-aliasing
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Rectangle with radius
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Border with radius
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Shadow
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Line:
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Arc:
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Polygon
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Masking
Text features
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UTF-8 support
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Anti-aliasing
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Kerning
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Word wrap and auto texts scrolling
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BiDirectional text support (mix RTL and LTR)
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Arabic and Persian support
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Font compression
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Subpixel rendering
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Online and offline font converter
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Interface for custom font engine
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FreeType integration example
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Multi language support
Image features
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Varius color formats: RGB, ARGB, Chroma keyed, indexed, alpha only
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Real time recoloring of images
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Real time zoom and rotation
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Images can in flash or files (e.g. SD card)
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Online and offline image converter
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Image decoder inerface for caching
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PNG integration example
Styles
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Set widgets appearance
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Cascade styles (like in CSS)
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Reuse the styles in multiple widgets
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Local styles for simple changes
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Themes to give a default appearance
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Transitions (animations) on state change
Micropython
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Binding to Micropython
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Online simulator
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Support ESP32