Updated with reed relais and debouncing button

lib/HomieNodes/ContactNode.hpp

@@ -0,0 +1,47 @@
+/*
+ * ContactNode.hpp
+ * Homie Node for a Contact switch
+ *
+ * Version: 1.0
+ * Author: Lübbe Onken (http://github.com/luebbe)
+ */
+
+#pragma once
+
+#include <Homie.hpp>
+
+#define DEFAULTPIN -1
+#define DEBOUNCE_TIME 200
+
+class ContactNode : public HomieNode
+{
+public:
+  typedef std::function<void(bool)> TContactCallback;
+
+private:
+  const char *cCaption = "• Contact:";
+  const char *cIndent = "  ◦ ";
+
+  TContactCallback _contactCallback;
+  int _contactPin;
+  // Use invalid values for last states to force sending initial state...
+  int _lastInputState = -1; // Input pin state.
+  int _lastSentState = -1;  // Last pin state sent
+  bool _stateChangeHandled = false;
+  unsigned long _stateChangedTime = 0;
+
+  bool debouncePin(void);
+  void handleStateChange(bool open);
+  void printCaption();
+
+protected:
+  int getContactPin();
+  virtual void loop() override;
+  virtual void setup() override;
+  virtual void setupPin();
+  virtual byte readPin();
+
+public:
+  explicit ContactNode(const char *name, const int contactPin = DEFAULTPIN, TContactCallback contactCallback = NULL);
+  void onChange(TContactCallback contactCallback);
+};