Apr 4, 2020 · Apr 1, 2020 · Apr 1, 2020 · Apr 1, 2020 · Apr 3, 2020 · Apr 4, 2020
diff --git a/cores/esp8266/Tone.cpp b/cores/esp8266/Tone.cpp

  pinMode(_pin, OUTPUT);

  high = std::max(high, (uint32_t)100);
  low = std::max(low, (uint32_t)100);
  high = std::max(high, (uint32_t)25);  // new 20KHz maximum tone frequency,
  low = std::max(low, (uint32_t)25);   // (25us high + 25us low period = 20KHz)

  if (startWaveform(_pin, high, low, (uint32_t) duration * 1000)) {
    _toneMap |= 1 << _pin;
Original file line number	Diff line number	Diff line change
Expand Up		@@ -35,8 +35,8 @@ static void _startTone(uint8_t _pin, uint32_t high, uint32_t low, unsigned long

		pinMode(_pin, OUTPUT);

		high = std::max(high, (uint32_t)100);
		low = std::max(low, (uint32_t)100);
		high = std::max(high, (uint32_t)25); // new 20KHz maximum tone frequency,
		low = std::max(low, (uint32_t)25); // (25us high + 25us low period = 20KHz)

		if (startWaveform(_pin, high, low, (uint32_t) duration * 1000)) {
		_toneMap \|= 1 << _pin;
Expand Down