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Merge pull request #1760 from urish/patch-2

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Allow indefinite duration for `tone()`
This commit is contained in:
Ivan Grokhotkov 2016-03-13 20:06:43 +03:00
commit 9d4208ef3b
1 changed files with 6 additions and 2 deletions
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8
cores/esp8266/Tone.cpp
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@ -113,11 +113,15 @@ void noTone(uint8_t _pin) {
digitalWrite(_pin, LOW); digitalWrite(_pin, LOW);
} }
void t1IntHandler() { ICACHE_RAM_ATTR void t1IntHandler() {
if (toggle_counts[T1INDEX] > 0){ if (toggle_counts[T1INDEX] != 0){
// toggle the pin // toggle the pin
digitalWrite(tone_pins[T1INDEX], toggle_counts[T1INDEX] % 2); digitalWrite(tone_pins[T1INDEX], toggle_counts[T1INDEX] % 2);
toggle_counts[T1INDEX]--; toggle_counts[T1INDEX]--;
// handle the case of indefinite duration
if (toggle_counts[T1INDEX] < -2){
toggle_counts[T1INDEX] = -1;
}
}else{ }else{
disableTimer(T1INDEX); disableTimer(T1INDEX);
digitalWrite(tone_pins[T1INDEX], LOW); digitalWrite(tone_pins[T1INDEX], LOW);