Hmm it works for me using task to read incomming data.

What speed are you using ?
Do you have the same problem with lower speed ?

What about the physical wire, is that on a PCB or long/short jumper wired ?


Here is sample code, I reach slave device every 100 ms (function is called 2 slaves at ...

WiFi and bluetooth are normaly used to communicate between boards 😉

If you need a wired connection, then it will depend on your requirement, speed, data size ect. ?

I have testede serial between two esp32 and it works fine.

What issue/problems do you have using serial ?
And what have you tryed ...

Hello

Me and my colleagues have been trying to communicate two ESP32 Boards for a very long time (started using Serial Communication RS232/485 continued with TwoWire). We have invested huge amount of time in the development process. There have been lots of BUGs, we have tried to overcome with ...