assert failed tcp_alloc/IDF etc

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John Nivard

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Jan 31, 2025, 2:53:34 PMJan 31

to painlessmesh-user

I am developing an distributed temperature control system using painlessmesh.

After upgrading to Arduino IDE to 2.3.4 ESP32 I recieve the error "assert failed tcp_alloc etc. This message is generated by the startup of the mesh network. Switching to a other developing environmend (platformio) is a complicated task. I have upgraded all the dependensies but that is not helping. Running the examples from the library gave the same problems

Dave NoLastName

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Jun 10, 2025, 4:43:23 PMJun 10

to painlessmesh-user

I fixed this by uninstalling "AsyncTCP" and installing "Async TCP" (notice the space). You might also have to replace "ESPAsyncWebServer" with "ESP Async WebServer"

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