Add support for easun SMG II inverter 2376

[amgstone]

My greetings, add support for easun SMG II inverter 2376. https://github.com/syssi/esphome-smg-ii

[alexpi01]

hey @amgstone!
I tried to use your approach which would give the advantage of not being tied on NET but i still had no success.
I loaded a stub of you program on a ESP32 but i still have no connection with the inverter. I really don\t understand why. The communication should be RS232 - at list it is what is written on the RJ45 inverter's socket. I supposed that the comm wire they provided (RJ45 -> DB9, for the data logger) are standard RS232 connections.
Can you re-post, please, your cable photos so i can see the both ends of your cables?
I am not very aware about modbus protocols. Is it possible that i need to input some special address for my particular device (which is exactly SMG-II 2376?
Thanks in advance for your patience.

[Antoxa1081]

hello, can you provide debug data from the page of the added device in ha (this is the download diagnostic data button)