User`s manual

High Performance Low Cost Embedded Systems
3.1.13 Testing LED
In the “FriendlyARM” subgroup, click on the “LED” icon:
On the popup window, the “Stop led-player” is enabled. This is because the led-player service is
started on system startup. After the system boots up, you will see a “sequential led lighting” which is
played by this service. To control a single LED, close this service to release the LED resources.
Follow the steps below:
Click on the “Stop led-player” button, its title will change to “Start led-player”, all the LEDs on the
board will be turned off, and all the buttons in the “LED Control” frame will be enabled. Clicking on
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