Add EASYBUTTON_DO_NOT_USE_SEQUENCES option to avoid no need RAM usage when "onSequence" is not used

Author: Philippe Ardit

src/EasyButton.cpp

@@ -61,6 +61,7 @@ bool EasyButton::read()
 				_pressed_callback();
 			}
 
+#ifndef EASYBUTTON_DO_NOT_USE_SEQUENCES
 			for (size_t i = 0; i < MAX_SEQUENCES; i++)
 			{
 				if (_sequences[i].newPress(read_started_ms))
@@ -69,6 +70,7 @@ bool EasyButton::read()
 					function();
 				}
 			}
+#endif
 		}
 		// Button was not held.
 		else

src/EasyButtonBase.cpp

@@ -18,6 +18,7 @@ void EasyButtonBase::onPressedFor(uint32_t duration, EasyButtonBase::callback_t
 	_pressed_for_callback = callback;
 }
 
+#ifndef EASYBUTTON_DO_NOT_USE_SEQUENCES
 void EasyButtonBase::onSequence(uint8_t sequences, uint32_t duration, EasyButtonBase::callback_t callback)
 {
 	if (_sequences_count < 5)
@@ -28,6 +29,7 @@ void EasyButtonBase::onSequence(uint8_t sequences, uint32_t duration, EasyButton
 		_pressed_sequence_callbacks[_sequences_count++] = callback;
 	}
 }
+#endif
 
 bool EasyButtonBase::isPressed()
 {
@@ -67,11 +69,13 @@ void EasyButtonBase::_checkPressedTime()
 		// Button has been pressed for at least the given time.
 		_was_btn_held = true;
 
+#ifndef EASYBUTTON_DO_NOT_USE_SEQUENCES
 		// Reset short presses counters.
 		for (Sequence seq : _sequences)
 		{
 			seq.reset();
 		}
+#endif
 
 		// Call the callback function for a long press event if it exist and if it has not been called yet.
 		if (_pressed_for_callback && !_held_callback_called)

src/EasyButtonBase.h

@@ -20,7 +20,9 @@
 #include "FunctionalInterrupt.h"
 #endif
 
+#ifndef EASYBUTTON_DO_NOT_USE_SEQUENCES
 #define MAX_SEQUENCES 5
+#endif
 
 class EasyButtonBase
 {
@@ -38,7 +40,9 @@ class EasyButtonBase
     virtual bool read() = 0;                                                    // Returns the current debounced button state, true for pressed, false for released.
     void onPressed(callback_t callback);                                        // Call a callback function when the button has been pressed and released.
     void onPressedFor(uint32_t duration, callback_t callback);                  // Call a callback function when the button has been held for at least the given number of milliseconds.
+#ifndef EASYBUTTON_DO_NOT_USE_SEQUENCES
     void onSequence(uint8_t sequences, uint32_t duration, callback_t callback); // Call a callback function when the given sequence has matched.
+#endif
 
     bool isPressed();                    // Returns true if the button state was pressed at the last read.
     bool isReleased();                   // Returns true if the button state was released at the last read.
@@ -49,11 +53,15 @@ class EasyButtonBase
 
 protected:
     // Common variables.
+#ifndef EASYBUTTON_DO_NOT_USE_SEQUENCES
     Sequence _sequences[MAX_SEQUENCES];
     uint16_t _sequences_count;
+#endif
     uint32_t _held_threshold; // Held threshold.
 
+#ifndef EASYBUTTON_DO_NOT_USE_SEQUENCES
     callback_t _pressed_sequence_callbacks[MAX_SEQUENCES];
+#endif
     callback_t _pressed_callback;     // Callback function for pressed events.
     callback_t _pressed_for_callback; // Callback function for pressedFor events.
     bool _held_callback_called;       // Indicate if button long press has been notified.

src/EasyButtonVirtual.cpp

@@ -53,6 +53,7 @@ bool EasyButtonVirtual::read()
 				_pressed_callback();
 			}
 
+#ifndef EASYBUTTON_DO_NOT_USE_SEQUENCES
 			for (size_t i = 0; i < MAX_SEQUENCES; i++)
 			{
 				if (_sequences[i].newPress(read_started_ms))
@@ -61,6 +62,7 @@ bool EasyButtonVirtual::read()
 					function();
 				}
 			}
+#endif
 		}
 		// Button was not held.
 		else