Added buttons controls.

SimpleButton.h

@@ -0,0 +1,126 @@
+#ifndef EYE_TRAINER_SIMPLEBUTTON
+#define EYE_TRAINER_SIMPLEBUTTON 0
+
+class SimpleButton
+{
+public:
+
+  SimpleButton(int _ButtonPin, unsigned long _LongClickTime)
+  {
+    m_LongClickTime = _LongClickTime;
+    m_ButtonPin = _ButtonPin;
+  }
+
+  void setup()
+  {
+    pinMode(m_ButtonPin, INPUT);  
+  }
+
+  int update(unsigned long _Time)
+  {
+    clearClicks();
+
+    int prevState = m_State;
+
+    unsigned long deltaTime = _Time - m_PrevTimeMS;
+    m_PrevTimeMS = _Time;
+    bool pinState = digitalRead(m_ButtonPin);
+
+    if(m_State == PRESSED && pinState)
+    {
+      m_PressedTime += deltaTime;
+      if(m_PressedTime >= m_LongClickTime)
+      {
+        m_IsNowHolded = true;
+      }
+    }
+    else if(m_State == PRESSED && !pinState)
+    {
+      m_State = RELEASED;
+      m_IsNowClicked = true;
+      
+      if(m_PressedTime >= m_LongClickTime)
+      {
+        m_IsNowLongClicked = true;
+        m_PressedTime = 0;
+      }
+      else
+      {
+        m_IsNowShortClicked = true;
+      }
+    }
+    else if(m_State == RELEASED && pinState)
+    {
+      m_State = PRESSED;
+      m_IsNowPressed = true;  
+    }
+
+    return m_IsNowHolded | (prevState != m_State);
+  }
+
+  bool IsNowClicked()
+  {
+    return m_IsNowClicked;
+  }
+
+  bool IsNowPressed()
+  {
+    return m_IsNowPressed;
+  }
+
+  bool IsNowReleased()
+  {
+    return m_IsNowReleased;
+  }
+
+  bool IsHolded()
+  {
+    return m_IsNowHolded;
+  }
+
+  bool IsNowLongClicked()
+  {
+    return m_IsNowLongClicked;
+  }
+
+  bool IsNowShortClicked()
+  {
+    return m_IsNowShortClicked;
+  }
+
+  unsigned long GetPressedTime()
+  {
+    return m_PressedTime;
+  }
+
+private:
+  static const int CLICK_DELAY = 20;
+  static const int PRESSED = 1;
+  static const int RELEASED = 0;
+  int m_ButtonPin;
+  int m_State = RELEASED;
+  unsigned long m_PrevTimeMS = 0;
+  unsigned long m_PressedTime = 0;
+  unsigned long m_LongClickTime = 250;
+  unsigned long m_PressDelayTime = 0;
+  unsigned long m_ReleaseDelayTime = 0;
+  bool m_IsNowClicked = false;
+  bool m_IsNowPressed = false;
+  bool m_IsNowReleased = false;
+  bool m_IsNowHolded = false;
+  bool m_IsNowShortClicked = false;
+  bool m_IsNowLongClicked = false;
+
+  void clearClicks()
+  {
+    m_IsNowClicked = false;
+    m_IsNowPressed = false;
+    m_IsNowReleased = false;
+    m_IsNowReleased = false;
+    m_IsNowHolded = false;
+    m_IsNowShortClicked = false;
+    m_IsNowLongClicked = false;
+  }
+};
+
+#endif