Actually i’am back from the dark side,
I’am glad Marvin that you find my code useful 
but for me there is no coming back on AT commands again no Way.
I made programmer for esp8266 from arduino UNO did not want to wait Chinese FTDI programmer.
https://community.blynk.cc/uploads/default/original/2X/9/9ca5f76d7615d271c717a603b98d9dd359312635.png
for info : (resistors are not neded)
And yes long time ago in old esp8266 core was implementation for 8266 to be a slave,as i was telling month ago,who reads code can find that information, for example here:
but now is disabled, i tried to patch everything and get working version where Esp8266 is slave, i wasn’t satisfied,how it was working and i stick to Esp8266 as a master.
Easy Transfer library:
did not work as expected and in 2 directions, so i write my routines for communication over i2c based on Nick Gammon informations
http://www.gammon.com.au/i2c
but with using structures and unions for easy converting packets of data into values.
And yes,by the way, i found big bug in Arduino Ide compiler for Esp8266, regarded to wrong representation of sizeof structure:
But i solve that and made all working.
Also for ugly start smart implemented very good almost perfect WiFiManager library
so after all i’am pretty satisfied with all, but i notice when i put all together, in testing that Esp8266 chrashes sometimes when internet is low on signal,or when router starts to act strangely and gets disconnected for a while and blink trys to connect, Esp chrashes,but i will find and test more efficient way to manage blynk connection…
That is update…for now…and yes you guys were rigt all this was like like one of those conversations you have with your kids when you’re trying to ge them to try a new food…