Blynk.config(...)to set Auth Token, Server Address, etc.
config()allows you to manage network connection. You can set up your connection type (WiFi, Ethernet, ...) by yourself, and then call:
Blynk.config(...)is called, your hardware is not yet connected to the server. It will try to connect while until it hits first instance of
Blynk.connect()routine. To skip connecting to the server or to disconnect manually, call
connectWiFito conveniently set up WiFi connection: