UM0574 Datasheet, PDF (8/20 Pages) STMicroelectronics – This user manual provides instructions for using

Demonstration firmware functionality description
UM0574
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Demonstration firmware functionality description
Main features of the firmware:
● Demonstrate brightness control for each LED separately
● Demonstrate color control for each LED separately
● Perform error detection to detect LED failure
● Provide a simple game simulation
A menu displayed on the RGB LEDs after powering up the board. The menu items are
depicted as the letters "A", "B", "C", "D" and "E", as shown in Figure 3. After power up, the
letter "A" - the first item on the RGB LED array - begins blinking. Pressing the buttons
changes the display to the next successive letter, to permit the selection of the desired menu
item.
Figure 3. The letter "A" indicates the first menu item
The board can be controlled by four buttons and one knob, as shown in Figure 4:
● Back/reset button (S4) - exits from current task and returns to the main menu
● Left button (S1) - changes the menu item in descending order
● Center button (S2) - selects the displayed menu item
● Right button (S3) - changes the menu item in ascending order
● Knob (R17 potentiometer) - changes the color of the menu display from blue to red
Figure 4. Demonstration board controls
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