DocID026161 Rev 4
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UM1743
Kernel description
110
•
Timer Callback: this is the callback of the Timer managing periodically the touch screen
state, the Timer callback is called periodically each 40 milliseconds.
3.4 Kernel
graphical
aspect
The STM32CubeF4 demonstration is built around the STemWin Graphical Library, based on
SEGGER emWin one. STemWin is a professional graphical stack library, enabling Graphical
User Interfaces (GUI) building up with any STM32, any LCD and any LCD controller, taking
benefit from STM32 hardware accelerations, whenever possible.
The graphical aspect of the STM32CubeF4 demonstration is divided into two main graphical
components:
•
the startup window (
and
), showing the progress of the hardware and
software initialization;
•
the main desktop (shown in figures
and
), that handles the main demonstration
menu and the many kernel and module controls.
Figure 4. Startup window
