port to platformio

src/inputs/Buttons.h

@@ -0,0 +1,94 @@
+#pragma once
+#include <Input.h>
+
+class Bounce {
+public:
+    void attach(int pin, int buttonPinMode) {
+        m_pin = pin;
+        pinMode(m_pin, buttonPinMode);
+        //Log.info("Attaching a button to %d", pin);
+    }
+
+    void update() {
+        int readResult = digitalRead(m_pin);
+        if (m_state == Ready) {
+            if (readResult == HIGH) {
+                m_state = Started;
+                m_downStart = millis();
+                //Log.info("Button %d is started!", m_pin);
+            }
+        } else if (m_state == Started && millis() - m_downStart >= m_interval) {
+            if (readResult == HIGH) {
+                m_state = Confirmed;
+                //Log.info("Button %d is CONFIRMED!", m_pin);
+            } else {
+                m_state = Ready;
+                //Log.info("Button %d bounced back to ready!", m_pin);
+            }
+        } else if (m_state == Confirmed || m_state == Held) {
+            if (readResult == LOW) {
+                //Log.info("Button %d is released", m_pin);
+                m_state = Released;
+            } else if (m_state == Confirmed) {
+                m_state = Held;
+                //Log.info("Button %d is being held down!", m_pin);
+            }
+        } else if (m_state == Released) {
+            //Log.info("Button %d is ready!", m_pin);
+            m_state = Ready;
+        }
+    }
+
+    void interval(uint8_t v) {
+        m_interval = v;
+    }
+
+    bool fell() const {
+        return m_state == Confirmed;
+    }
+
+    bool rose() const {
+        return m_state == Released;
+    }
+
+    bool held() const {
+        return m_state == Held;
+    }
+
+private:
+    enum State {
+        Ready,
+        Started,
+        Confirmed,
+        Held,
+        Released
+    };
+
+    State m_state = Ready;
+    unsigned int m_pin = 0;
+    unsigned int m_downStart = 0;
+    unsigned int m_interval = 10;
+};
+
+class Buttons: public InputSource {
+public:
+    Buttons() : InputSource("Buttons") {}
+    void onStart() override;
+    InputEvent read() override;
+
+    enum Chord {
+        None = 0,
+        Circle = 1,
+        Triangle = 2,
+        Cross = 4,
+        CircleTriangle = Circle | Triangle,
+        CircleCross = Circle | Cross,
+        TriangleCross = Triangle | Cross,
+        CircleTriangleCross = Circle | Triangle | Cross
+    };
+
+private:
+    Bounce m_buttons[3];
+    Chord m_buttonMap[3] = {Circle, Triangle, Cross};
+    bool m_wasChord[3] = {false, false, false};
+};