How to control Edgecore AP LED light by setting UCI configuration

After load standard TIP OpenWiFi image into an Edgecore AP hardware such as EAP101, the uplink and lan LEDs are not blinking.
(1) LED behaviors are controlled by UCI configuration file, is there a how-to document to help configuring UCI for LED
(2) Can there be default UCI configuration file for each specific hardware in the code base of TIP OpenWiFi future release?

LED control is integrated with the firmware. It blinks when there is traffic.

ECW5211-L and ECW5410-L LED feature is supported with firmware 1.1.0rc, but EAP101 LED features are not yet ready.