I have successfully added 'SmartConfig' function based on the controller V0.8.1.
With 'SmartConfig', you only need to type the password of your wifi network using an app 'ESPTouch' on your smart phone to successfully connect to your 2.4GHz local network. (no need to set 'ssid' and 'password' using vscode and platformio every time.)
Herewith the source code of 'setup'.
I am doing further to see if possible to save connected ssid and password in the hardware once it's successfully connected.
Also I am thinking it should be a way to make a setup of server ip (without vscode and platformio) in order to make everything easier for users.
It would be glad to hear any ideas from all AWTRIX project lovers.