Starts search from beginning or from end.

search_from_beginning_end.cpp

byte TEA5767N::startsSearchFromBeginning() {
  setSearchUp();
  return startsSearchFrom(87.0);
}

byte TEA5767N::startsSearchFromEnd() {
  setSearchDown();
  return startsSearchFrom(108.0);
}

byte TEA5767N::startsSearchFrom(float frequency) {
	selectFrequency(frequency);
	return searchNext();
}