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emWin Samples



SEGGER Product Demo Wearables

emWin Smartwatch Sample for STM32L4R9I Discovery

Demo with various screens in modern style


Main screen


Settings screen


Health screen


Date screen


Time screen

Demo of a clock with a classic clock face


Clock face classic

Demo of a thermostat interface


Temperature control screen

SEGGER Product Demo


This package offers two prebuilt binary files of a SEGGER product demo application to run on an ST STM32F746G-Discovery.

It is prepared for download into internal flash using J-Link without the need for an IDE. An embOS stack-check and profiling library is used.

Content of the demo application:


Shows a list of all the tasks running and provides information about the different tasks.


This is a combination of emFile and emSecure. This application reads the images (*.bmp and *.jpeg) from the SD Card and displays those files.

Further the emSecure part tries to verify the images with the signatures (*.*.sig). On success the images are getting displayed. On fail the images are getting displayed with a watermark. To have this working properly, please copy the content from \SDCard to an SD card and plug it into the board.

Please make sure the image are in the proper size. The best size is 300x172 pixels. Anything above won't be displayed correctly.


This application shows how to realize a touch pad (like known from a notebook) and makes it possible to control the host PCs mouse. To have this application working properly make sure the board is connected via mini USB cable on connector 'CN12 USB_HS'.


This application shows the network traffic related to the board. It displays received and send bytes. Of course this demo makes only sense if the VNC application is running and an Ethernet cable is connected. Further it shows the IP address of this board once a connection has been established.


If the 'VNC on startup' version is running, VNC is always on. Otherwise it needs to enabled by tipping on the appropriate button. To connect to the board use a VNC client of your choice and use either the IP address displayed in the emNet application or use 'STM32F746' as connection.


This application shows a simple user interface to control the color of light bulbs.


If the application without VNC is running a screensaver will be shown after short period of inactivity.