u8g2 Software Package | A Monochrome Graphics Library is Ported on RT-Thread


U8g2 is a monochrome graphics library for embedded devices. U8g2 supports Monochrome LCD, OLED, and eInk Library. Now it is ported on RT-Thread to satisfy different development requirements.

Game Development (examples/games/space_trash)

User Interface (examples/page_buffer/icon_menu)

Drawing (examples/page_buffer/graphic_test)

1、U8G2 Features

1.1 Supports Multi-screens. Easy to Port.

The advantage of using u8g2 is that it supports nearly 200 monochrome screens, and same code can run directly on different screens:

Classic screen 128x64


See here for a full list of supporting screens.


1.2 Supports Many Fonts.

1.3 Supports Many Drawing Functions.

Supports a variety of drawing functions, and comes with a variety of icons.

Summarize the features of u8g2:

  • Support for nearly 200 monochrome screens, making it easy to port.
  • Supports a variety of drawing functions, images and non-operation, with user key detection.
  • Unicode and utf8 are supported, with more than 100 fonts and over 100 icons.


2.1 Catalog Structure

2.2 License

  • The repository and optionally the releases contain icons, which are derived from the WPZOOM Developer Icon Set. WPZOOM Developer Icon Set by WPZOOM is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
  • Fonts are licensed under different conditions.for detailed information on the licensing conditions for each font.

Check Full LICENCE here.

2.3 Dependence

Note: If you need to use the I2C LCD screen you need to turn on the I2C, and use GPIO to simulate I2C.

  • Using I2C device drivers
  • Use GPIO to simulate I2C

Note: If you use the SPI LCD, you need to turn on the SPI.

  • Using SPI Bus/Device device drivers

3、How to use U8G2?

You will need to select u8g2 package on the RT-Thread package manager, the specific path is shown as follows:

RT-Thread online packages
peripheral libraries and drivers --->
[*] U8G2: a u8g2 package for rt-thread
[*] Use hardware spi
(spi1) spi bus name (NEW)
(spi10) spi device name (NEW)
[*] Use hardware i2c
(i2c2) i2c device name
U8G2 Examples --->

Then, RT-Thread’s package manager will update automatically, or you can manually update the package to the BSP by entering the ‘pkgs-update’ command.

There are 50 routines that you can see in the source docs directory. The default routines are using the software I2C, if you feel that the speed of software I2C is relatively slow you can use the hardware I2C.

4、 Notes

RT-Thread Contact Info:

Website | Github | Twitter | Facebook | Youtube




An Open-Source Community-Powered Real-Time Operating System (RTOS) Project! We develop, we DIY, we create, we share, we explore this new IoT World together!

Love podcasts or audiobooks? Learn on the go with our new app.

Recommended from Medium

Learning AMP: Google Analytics Setup on Wordpress

Integrating LightStep [x]PM with Istio

Kubernetes: Services

C libraries, a brief summary!

Memory Management in VBA: 3 Keys to Avoiding Memory Leaks

Performance and Memory Analysis with GraalVM and VisualVM in VS Code

Graph Traversal — Breadth-First Search vs Depth-First Search

Day 12: Blowing Up The Asteroid Ghost

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store
RT-Thread IoT OS

RT-Thread IoT OS

An Open-Source Community-Powered Real-Time Operating System (RTOS) Project! We develop, we DIY, we create, we share, we explore this new IoT World together!

More from Medium

Envelop Encryption

Binary protection using go embed and plugins

goutil/dump-print beautiful and easy-to-read go data

Part 2: Grpc Proto Code Generation Using Protoc for Message and Services