45 lines
1.0 KiB
C++
45 lines
1.0 KiB
C++
#include <Arduino.h>
|
|
#include "polybuzzer.h"
|
|
|
|
PolyBuzzer::PolyBuzzer(uint8_t pin) {
|
|
for (int i = 0; i < POLYBUZZER_MAX_TONES; i++) {
|
|
this->tones[i] = 0;
|
|
}
|
|
this->playing = 0;
|
|
this->pin = pin;
|
|
pinMode(pin, OUTPUT);
|
|
}
|
|
|
|
void PolyBuzzer::update() {
|
|
for (int i = 0; i < POLYBUZZER_MAX_TONES; i++) {
|
|
if (tones[i]) {
|
|
if (playing != tones[i]) {
|
|
playing = tones[i];
|
|
tone(this->pin, tones[i]);
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
this->playing = 0;
|
|
noTone(this->pin);
|
|
}
|
|
|
|
void PolyBuzzer::Tone(int slot, unsigned int frequency) {
|
|
tones[slot] = frequency;
|
|
this->update();
|
|
}
|
|
|
|
void PolyBuzzer::Note(int slot, int note) {
|
|
unsigned int frequency = 8.18; // MIDI note 0
|
|
for (int i = 0; i < note; i++) {
|
|
frequency *= 1.0594630943592953; // equal temperament half step
|
|
}
|
|
this->Tone(slot, frequency);
|
|
}
|
|
|
|
void PolyBuzzer::NoTone(int slot) {
|
|
tones[slot] = 0;
|
|
this->update();
|
|
}
|
|
|