"I see something on port 23 with putty, i think maybe binary output of the APM, but MP can't connect to it. How can I open those ports? is that done on the firmware? I can't compile it..."
Thanks for the link! Already uploaded it and configure the baud to the default 57600. Now I can connect to the ESP wifi, and I have the ESP module on the telemetry port of a APM2.5.6, but I can't connect to the APM via MP and a tcp…"