buzzer-pulse
marcoaita/malibrary/buzzer-pulse
This node allows to use the buzzer on the Ks0183 keyestudio Multi-purpose Shield V1
Like the buzzer, It is just a wrapper around the tone command for Arduino, but it requires a pulse input and the buzzer only emits a beep for the duration of T seconds.
buzzer-pulse
@/buzzer-pulse
This node allows to use the buzzer on the Ks0183 keyestudio Multi-purpose Shield V1
Like the buzzer, It is just a wrapper around the tone command for Arduino, but it requires a pulse input and the buzzer only emits a beep for the duration of T seconds.
PORTport
FREQnumber
Tnumber
TRIGpulse
DONEpulse
C++ implementation
struct State {
};
{{ GENERATED_CODE }}
void evaluate(Context ctx) {
auto port = getValue<input_PORT>(ctx);
auto freq = getValue<input_FREQ>(ctx);
auto duration= getValue<input_T>(ctx)*1000.0;
if (isInputDirty<input_TRIG>(ctx)) {
pinMode(port, OUTPUT);
tone(port, freq, duration);
delay(duration); // tone is not blocking so we need this to have the DONE pulse at the end of sound, not at the beginning
emitValue<output_DONE>(ctx, true); //emits a pulse when done producing sound
pinMode(port, INPUT); // put the output into a tri-state to silence even stubborn buzzers (this works whatever the driving transistor is, PNP or NPN)
} else {
noTone(port);
}
}