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).




  • stream : an instance of a class that inherits from Stream.
  • terminator : the character to search for (char)


The entire string read from a stream, until the terminator character is detected

See also

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The text of the 86Duino reference is a modification of the Arduino reference and is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. Code samples in the reference are released into the public domain

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