connection to AP still exists, but no more IP traffic possible

Jami17
Posts: 20
Joined: Wed Jul 12, 2017 10:55 pm

connection to AP still exists, but no more IP traffic possible

Postby Jami17 » Tue Jul 16, 2019 1:37 pm

With ESP32-CAM working as STA I have observed several times, that it and the AP report that connection still exists (no SYSTEM_EVENT_STA_DISCONNECTED occured in ESP32-CAM), but no more IP messages can be exchanged. No ping / UDP / HTTP. The ESP32-CAM sits in the basement so signal strength is weak, it reports -77 .. -83dB. But usually IP exchange works quite well. The module sends UDP-msg every 10s during the test phase to a PC, and these also stop arriving.

It all works again after a ESP32 reset or turning the AP off / on.

What can be done to ensure reliable IP connection over long periods?
In the worst case it would connect to 8.8.8.8 once in a while to check if IP is still working. But I would like to avoid that.

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