findUntil() reads data from the stream until the target string of given length or terminator string is found, or it times out (see ../streamsettimeout[Stream.setTimeout()]).

The function returns true if target string is found, false if timed out

This function is part of the Stream class, and can be called by any class that inherits from it (Wire, Serial, etc). See the Stream class main page for more information.


stream.findUntil(target, terminal)


  • stream : an instance of a class that inherits from Stream
  • target : the string to search for (char)
  • terminal : the terminal string in the search (char)


  • bool
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