Watch Interface
Using LVGL v8, the included interfaces are:
Honeycomb main menu
Watch face
Cube left-right rotation (not supported on SF32lb55x series chips)
Note
Not supported on 520-hdk
Watch Interface
Source Code Path: example/multimedia/lvgl/watch This is a smartwatch interface example implemented based on LVGL v8, featuring various interactive interfaces and font configuration capabilities. It demonstrates how to use the LVGL graphics library component of SiFli-SDK to build user interfaces for embedded devices. Developers can use this example as a foundation to build UI interfaces for various smart wearable devices such as sports watches and health monitoring devices.
Supported Boards
This example can run on the following development boards:
sf32lb52-lcd_n16r8
sf32lb52-lchspi-ulp
Note
Not supported on 520-hdk
Hardware Requirements
SiFli development board with LCD display support
Specifying Fonts
Refer to src/resource/fonts/SConscript. By adding the FREETYPE_FONT_NAME macro definition in CPPDEFINES, you can register the corresponding TTF font to LVGL
CPPDEFINES += ["FREETYPE_FONT_NAME={}".format(font_name)]
If font_name is DroidSansFallback, it is equivalent to adding the following macro definition
#define FREETYPE_FONT_NAME DroidSansFallback
During compilation, it will search for font files with .ttf suffix in the freetype subdirectory and convert them to C files for compilation
objs = Glob('freetype/{}.ttf'.format(font_name))
objs = Env.FontFile(objs)
Macros like FREETYPE_TINY_FONT_FULL are defined in Kconfig.proj in the project directory, similar to the following:
config FREETYPE_TINY_FONT_FULL
bool
default y
Example Output
After successful execution, the development board screen will display the watch main interface, including a honeycomb menu and watch face display. You can switch between different interfaces via touch or buttons.