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In the previous section, Arduino+ESP32 drives the GC9A01 circular LCD (one), We've already ported the arduino GFX library, which includes sample programs for LVGL as well.   Porting lvgl in arduino is very convenient. Let's transplant one together and run the demo example of lvgl! Since the Arduino project file in arduino's library path is rea ...

LVGL has a "file system" abstraction module that enables you to attach any type of file system. The file system is identified by a drive letter. For example, if the SD card is associated with the letter "S", you can access a file similar to "S:path/to/file.txt". The "file system" abstraction module is of ...

Although lvgl officially provides library functions for linux framebuffer operation, I decided to try whether I could implement this operation myself In the actual project, the official library function should be preferred, and the official implementation code is located in the folder lv_drivers/display fbdev c. This article records the whol ...

An image can be a file or a variable that stores the bitmap data itself and other metadata. Store images Images can be stored in two places: Variables in internal memory (RAM or ROM)file Variables The image stored in the variable is mainly composed of LV with the following fields_ img_ dsc_ T structure composition: header cf color form ...