Hi,
I’m experimenting with homebrew nodes (STM32L with Semtech / mbed stack) on someone else’s gateway.
Uplinks work fine, OTAA and downlinks sometimes. In the console I see empty downlinks.
![Capture](https://www.thethingsnetwork.org/forum/uploads/default/original/3X/6/e/6ee4ad81fdf0b7ed774f9bc0f65e09b43b64208c.png)
No fields, no payload, port 0.
Does anyone have any hints or tips what this can be ?
Kind regards,
Ivo
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kersing
(Jac Kersing)
2
Port 0 is network related traffic. Probably ADR data for the node to switch to a more suitable spreading factor and transmission power,
BTW, this question has been asked and answered numerous times, a quick search of the forum should provide this answer as well.
Thanks for pointing out that “port 0” is the key keyword here. That brings up this post :
Which answers the question.
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