Description
readStringUntil() reads characters from a stream into a string. The function terminates if the terminator character is detected or it times out (see setTimeout()).
This function is part of the Stream class, and is called by any class that inherits from it (Wire, Serial, etc). See the Stream class main page for more information.
Syntax
stream.readString(terminator)
Parameters
terminator : the character to search for (char)
Returns
The entire string read from a stream, until the terminator character is detected.