83 lines
2.2 KiB
C
83 lines
2.2 KiB
C
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#pragma once
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class Bounce {
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public:
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void attach(int pin, PinMode buttonPinMode) {
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m_pin = pin;
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pinMode(m_pin, buttonPinMode);
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Log.info("Attaching a button to %d", pin);
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}
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void update() {
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int readResult = digitalRead(m_pin);
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if (m_state == Ready) {
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if (readResult == HIGH) {
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m_state = Started;
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m_downStart = millis();
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Log.info("Button %d is started!", m_pin);
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}
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} else if (m_state == Started && millis() - m_downStart >= m_interval) {
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if (readResult == HIGH) {
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m_state = Confirmed;
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Log.info("Button %d is CONFIRMED!", m_pin);
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} else {
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m_state = Ready;
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Log.info("Button %d bounced back to ready!", m_pin);
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}
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} else if (m_state == Confirmed || m_state == Held) {
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if (readResult == LOW) {
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m_state = Ready;
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Log.info("Button %d is released and back to ready!", m_pin);
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} else if (m_state == Confirmed) {
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m_state = Held;
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Log.info("Button %d is being held down!", m_pin);
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}
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}
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}
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void interval(uint8_t v) {
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m_interval = v;
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}
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bool fell() const {
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return m_state == Confirmed;
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}
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private:
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enum State {
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Ready,
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Started,
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Confirmed,
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Held
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};
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State m_state = Ready;
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unsigned int m_pin = 0;
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unsigned int m_downStart = 0;
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unsigned int m_interval = 10;
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};
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class Buttons: public InputSource {
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public:
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void onStart() override {
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for(int i = 0; i < 3; i++) {
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m_buttons[i].attach(2 + i, INPUT_PULLDOWN);
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m_buttons[i].interval(15);
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}
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}
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InputEvent read() override {
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for(int i = 0; i < 3; i++) {
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m_buttons[i].update();
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if (m_buttons[i].fell()) {
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return InputEvent{m_buttonMap[i]};
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}
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}
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return InputEvent{};
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}
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private:
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Bounce m_buttons[3];
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InputEvent::Intent m_buttonMap[3] = {InputEvent::PowerToggle, InputEvent::NextPattern, InputEvent::UserInput};
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};
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