This
page
allows you to control the four LEDs: LED1, LED2, LED3 and LED4 located in
the STM324xG-EVAL board. To put on/off a LED you have to
check/uncheck its corresponding checkbox. Then you have to click on
"Send" button to submit the new LEDs configuration. Finally
check in the STM324xG-EVAL board that you get the desired LEDs
are putted on/off.