106 lines
2.1 KiB
Arduino
106 lines
2.1 KiB
Arduino
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/*
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Connections:
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- Volume control potentiometer
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- +5V -> pot MAX
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- A0 -> pot sweeper (center)
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- GND -> pot MIN
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- buttons
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- +5V -> [1k ohm] -> common connection to buttons
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- D2 -> button 1
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-> [1M ohm] -> GND
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- D3 -> button 2
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-> [1M ohm] -> GND
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- D4 -> button 3
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-> [1M ohm] -> GND
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- D5 -> button 4
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-> [1M ohm] -> GND
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(or drop the resistors completely and use the internal pull-down resistors)
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*/
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#include <DebounceEvent.h>
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const int btns = 4;
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const int SWITCH_DEBOUNCE_DELAY = 500;
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DebounceEvent switches[btns] = {
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DebounceEvent(2, BUTTON_SWITCH, SWITCH_DEBOUNCE_DELAY),
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DebounceEvent(3, BUTTON_SWITCH, SWITCH_DEBOUNCE_DELAY),
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DebounceEvent(4, BUTTON_SWITCH, SWITCH_DEBOUNCE_DELAY),
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DebounceEvent(5, BUTTON_SWITCH, SWITCH_DEBOUNCE_DELAY)
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};
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const int volumePin = A0;
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const int volumeRawMin = 0;
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const int volumeRawMax = 850;
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const int volumeStep = 5;
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int volume = -1;
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// === Switches ===
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void switchesSetup() {
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for (int i = 0; i < btns; i++) {
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sendButtonEvent(i+1, switches[i].pressed());
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}
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}
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void switchesLoop() {
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for (int i = 0; i < btns; i++) {
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int event = switches[i].loop();
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if (event != EVENT_NONE) {
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sendButtonEvent(i+1, switches[i].pressed());
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}
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}
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}
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// === Volume ===
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void volumeInit() {
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pinMode(volumePin, INPUT);
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volume = volumeRead();
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sendVolumeEvent();
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}
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int volumeRead() {
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int volumeRaw = analogRead(volumePin);
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return map(volumeRaw, volumeRawMin, volumeRawMax, 0, 255);
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}
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void volumeLoop() {
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int newVolume = volumeRead();
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if (abs(volume - newVolume) >= volumeStep) {
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volume = newVolume;
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sendVolumeEvent();
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}
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}
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// === Serial Events ===
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void sendEvent(char *name, int value) {
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Serial.print(name);
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Serial.print("=");
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Serial.println(value);
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}
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void sendVolumeEvent() {
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sendEvent("volume", volume);
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}
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void sendButtonEvent(int buttonNumber, int state) {
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String name = "button";
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name.concat(buttonNumber);
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sendEvent(name.c_str(), state);
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}
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// === MAIN ===
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void setup() {
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Serial.begin(9600);
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switchesSetup();
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volumeInit();
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}
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void loop() {
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switchesLoop();
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volumeLoop();
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delay(100);
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}
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