The Atmel-ICE top panel has three LEDs that indicate the status of current debug or programming sessions.
| LED | Function | Description |
|---|---|---|
| Left | Target power | GREEN when target power is OK. Flashing indicates a target power error. It does not light up until a programming/debugging session connection is started. |
| Middle | Main power | RED when main-board power is OK |
| Right | Status | Flashing GREEN when the target is running/stepping. OFF when the target is stopped. |