Two LEDs located on the top side, the red LD2 and the green LD1 (refer to
), are available for the user.
To light a LED, a low-logic state HIGH must be written in the corresponding GPIO register.
shows the
assignment of the control ports to the LED indicators.
Table 10.
Button and LED control port
Reference
Color
Name
Comment
B1
BLACK
RESET
-
B2
BLUE
USER
Wake-up alternate function
LD7
RED
USB_FS_OVCR
PG13
LD6
BICOLOR (RED/GREEN)
STLINK-V3E COM
Green when communication ongoing
LD3
RED
STLINK-V3E Over Current
-
LD4
GREEN
VBUS USB FS
PA9
LD5
GREEN
POWER
5V power supply available
LD2
RED
USER2
PC2
LD1
GREEN
USER1
PC3
LD8
GREEN
ARDUINO
PF7
UM2679
Buttons and LEDs
UM2679
-
Rev 1
page 19/42