Added temperature and relay nodes

lib/HomieNodes/PingNode.hpp

@@ -0,0 +1,71 @@
+/*
+ * BME280Node.h
+ * Homie Node for BME280 sensors using Adafruit BME280 library.
+ *
+ * Version: 1.1
+ * Author: Lübbe Onken (http://github.com/luebbe)
+ * Author: Markus Haack (http://github.com/mhaack)
+ */
+
+#pragma once
+
+#include "NewPing.h"
+
+#include "SensorNode.hpp"
+#include "constants.hpp"
+
+#define DEFAULTPIN -1
+
+class PingNode : public SensorNode
+{
+public:
+  typedef std::function<void()> ChangeHandler;
+private:
+  const float cMinDistance = 0.0;
+  const float cMaxDistance = 3.0;
+  const float cMinimumChange = 0.2;
+
+  static const int MIN_INTERVAL = 1; // in seconds
+  const char *cCaption = "• RCW-0001 sensor";
+  const char *cIndent = "  ◦ ";
+
+  int _triggerPin;
+  int _echoPin;
+  float _microseconds2meter;
+  
+  unsigned long _measurementInterval;
+  unsigned long _lastMeasurement;
+  unsigned long _publishInterval;
+  unsigned long _lastPublish;
+
+  NewPing* sonar;
+  float _distance = NAN;
+  int _ping_us = NAN;
+  float _lastDistance = 0;
+  ChangeHandler _changeHandler = [](){};
+  
+  float getRawEchoTime();
+  void setMicrosecondsToMetersFactor(float temperatureCelcius);
+  bool signalChange(float distance, float lastDistance);
+  void printCaption();
+  void send();
+  
+protected:
+  virtual void setup() override;
+  virtual void loop() override;
+  virtual void onReadyToOperate() override;
+  static const int DEFAULT_MEASUREMENT_INTERVAL = 1;
+  static const int DEFAULT_PUBLISH_INTERVAL = 5;
+
+
+public:
+  explicit PingNode(const char *name,
+                     const int triggerPin = DEFAULTPIN,
+                     const int echoPin = DEFAULTPIN,
+                     const int measurementInterval = DEFAULT_MEASUREMENT_INTERVAL,
+                     const int publishInterval = DEFAULT_PUBLISH_INTERVAL);
+
+  float getDistance() const { return _distance; }
+  void setTemperature(float temperatureCelcius) { setMicrosecondsToMetersFactor(temperatureCelcius); }
+  PingNode& setChangeHandler(const ChangeHandler& changeHandler);
+};