Led modes and device state

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Kirale KTDG102 USB Dongle notifies its current state with its on-board blue led. The state variation is shown as different duty cycles leading to different states: fast blinking, slow blinking, normal blinking and solid.


Fast blinking – Bootloader mode

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It means that the device is in KiNOS DFU Bootloader mode. When the dongle is in this state it is ready to receive a firmware through DFU USB interface. When a KTDG102 dongle is plugged for the first time it will be in this state (it is released from factory without any firmware). Refer to First set up to flash a firmware for the first time.


Super fast blinking – Bootloader mode

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In this state the device has received a new firmware update and it is validating and applying it to the program flash memory. Once a firmware is loaded in the device it automatically resets and switch to KiNOS Run-Time mod. It means the new firmware is running. Next led actions refer to run-time states.


Slow blinking – Idle

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In this state the device has a firmware running but it is in idle state, that is, not connected to any Thread Network. KTDG102 USB Dongle is waiting for configuration and start-up commands.


Normal blinking – Connecting

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In connecting state the KTDG102 USB Dongle is trying to join a network. This happens when the start-up (ifup) command triggers the connection process, during a reboot, or when a connected device temporary loses its connectivity and tries to re-connect.


Steady light – Connected

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When the led is not blinking it means that the device has successfully connected and joined a network. If the KTDG102 dongle has been set to work as Packet Sniffer this state indicates that it has successfully started to sniff and capture packets on a given channel. If the KTDG102 Dongle, instead, is working as a Thread node, this LED state means that the node has successfully joined a Thread Network and that is connected to it.