NXP Semiconductors
AN13730
How to Develop LVGL GUI Demo on Memory-constrained MCU with GUI Guider
• Open source and free to use under MIT license
• Written in C (C++ compatible) and hosted on GitHub
• More than 30 powerful, fully customizable widgets, such as, button, image button,
checkbox, switch, slider, label, arc, bar, line, canvas, image, roller, slider, meter, table,
text area, animation, calendar, chart, list, menu, message box, tabview
• Display of any resolution, GPU support, Multi display support
• Supports multiple types of input devices, such as:
– Pointer-like input device like touchpad or mouse
– Keypads like a normal keyboard or simple numeric keypad
– Encoders with left/right turn and push options
– External hardware buttons which are assigned to specific points on the screen
• Drawing features, such as:
– anti-aliasing
– shadow
– line, arc, polygon
– mask
• Text features, such as;
– UTF-8 support
– Kerning
– word wrap and auto texts scrolling
– Arabic and Persian support
– font compression
– subpixel rendering
– online and offline font converter
– interface for custom font engine
– FreeType integration example
– multi-language support
• Image features, such as:
– various color formats: RGB, ARGB, Chroma keyed, indexed, alpha only
– Real-time recoloring of images
– Real-time zoom and rotation
– Images can be stored in flash or files (such as, SD card)
– Online and offline image converter
– Image decoder interface for caching
– PNG integration example
• Styles, such as:
– Cascade styles (like in CSS)
– Reuse the styles in multiple widgets
– Local styles for simple changes
– Themes to give a default appearance
– Transitions (animations) on state change
• Micropython support
• Rich demo examples and documents
• Supported by GUI Guider, free UI design tool of NXP
For more details, see the LVGL page.
LVGL version used in this application note is 8.0.2.
AN13730 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2022. All rights reserved.
Application note Rev. 0 — 9 September 2022
3 / 28
