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lorabasics / basicstation

LoRa Basics™ Station - The LoRaWAN Gateway Software
https://doc.sm.tc/station
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DevEUI needed for DL data #9

Closed otassain closed 5 years ago

otassain commented 5 years ago

What is the use of the device's devEUI field in the downlink messages sent to the Gateway ? Is it mandatory or can it be filled with a default value?

You can contact me back by mail otassain.ext@objenious.com

beitler commented 5 years ago

The devEUI and diid (device interaction ID) fields are passed along by Station from the dnmsg to the dntxed message. Internally, these fields are only used for logging. Passing these fields through, allows the LNS to easily correlate the dntxed message to the internal state associated to the downlink transaction. If in your server architecture the device EUI is not available at the place where the dnmsg is constructed, you could pass along some other device-specific identifier, like the short address. Station just expects a string in EUI format to be present in the devEUI field.

otassain commented 5 years ago

Thanks Anton.