Bert Melis

Ah yes, that's not supported. https://github.com/me-no-dev/AsyncTCP/issues/10

AsyncTCP is relying on LwIP indeed. Now for the client, Async is not a hard requirement for me but for a server it has the advantage that it is faster....

I suppose that methods that aren't used in the user application will not be linked into the binary. So from and end user point there's little difference. One thing to...

Because I wanted to have responsiveness for my wireless devices. For the RTU version I only needed half-duplex and here you have to rely on the request/response routine to finish...

Maybe first things first. what are the common elements in all the options (RTU, TCPvA and TCPvB)? Can they be designed by a base class and derived classes with specific...

Sorry, I meant a regular TCP client instead of WiFiClient. And lucky me, I'm not working at the moment. I am very busy raising the kids though. I unfortunately don't...

OMG, you do realize I'm not a professional programmer do you? I'm actually an engineer (electromechanics). The things I know I learned by myself. I'll give it a thorough look.

Don't have a nano. I also only test using direct communication, thing the DE pin to a led. The firmware doesn't know. I'm in the process of salvaging an old...

Error 0xEF is indeed not defined. Could you share your code?

The error comes from an error code returned by the modbus slave. See these lines: https://github.com/bertmelis/esp32ModbusRTU/blob/f85417c00fb0d937a4a78a31750513c9bd84d3c8/src/ModbusMessage.cpp#L247 Could you switch lines A and B? (I know, my readme is not clear...