Added temperature and relay nodes

2020-03-08 20:10:23 +01:00
parent 82c7029e57
commit aa9fa938c4
12 changed files with 731 additions and 101 deletions
--- a/lib/HomieNodes/DHT22Node.cpp
+++ b/lib/HomieNodes/DHT22Node.cpp
@@ -0,0 +1,105 @@
+/*
+ * DHT22Node.cpp
+ * Homie Node for DHT22 sensors using Adafruit DHT22 library.
+ *
+ * Version: 1.0
+ * Author: Lübbe Onken (http://github.com/luebbe)
+ */
+
+#include "DHT22Node.hpp"
+
+#define DHTTYPE DHT22
+
+DHT22Node::DHT22Node(const char *name, const int sensorPin, const int measurementInterval)
+    : SensorNode(name, "DHT22"),
+      _sensorPin(sensorPin),
+      _measurementInterval(measurementInterval),
+      _lastMeasurement(0)
+{
+  if (_sensorPin > DEFAULTPIN)
+  {
+    dht = new DHT(_sensorPin, DHTTYPE);
+  }
+
+  advertise(cStatusTopic)
+      .setDatatype("enum")
+      .setFormat("error, ok");
+  advertise(cTemperatureTopic)
+      .setDatatype("float")
+      .setFormat("-40:125")
+      .setUnit(cUnitDegrees);
+  advertise(cHumidityTopic)
+      .setDatatype("float")
+      .setFormat("0:100")
+      .setUnit(cUnitPercent);
+  advertise(cAbsHumidityTopic)
+      .setDatatype("float")
+      .setUnit(cUnitMgm3);
+}
+
+void DHT22Node::printCaption()
+{
+  Homie.getLogger() << cCaption << " pin[" << _sensorPin << "]:" << endl;
+}
+
+void DHT22Node::send()
+{
+  printCaption();
+
+  if (isnan(temperature) || isnan(humidity))
+  {
+    Homie.getLogger() << cIndent << "Error reading from Sensor" << endl;
+
+    if (Homie.isConnected())
+    {
+      setProperty(cStatusTopic).send("error");
+    }
+  }
+  else
+  {
+    float absHumidity = computeAbsoluteHumidity(temperature, humidity);
+
+    Homie.getLogger() << cIndent << "Temperature: " << temperature << " °C" << endl;
+    Homie.getLogger() << cIndent << "Humidity: " << humidity << " %" << endl;
+    Homie.getLogger() << cIndent << "Abs humidity: " << absHumidity << " g/m³" << endl;
+
+    if (Homie.isConnected())
+    {
+      setProperty(cStatusTopic).send("ok");
+      setProperty(cTemperatureTopic).send(String(temperature));
+      setProperty(cHumidityTopic).send(String(humidity));
+      setProperty(cAbsHumidityTopic).send(String(absHumidity));
+    }
+  }
+}
+
+void DHT22Node::loop()
+{
+  if (dht)
+  {
+    if ((millis() - _lastMeasurement >= _measurementInterval * 1000UL) ||
+        (_lastMeasurement == 0))
+    {
+      temperature = dht->readTemperature();
+      humidity = dht->readHumidity();
+
+      fixRange(&temperature, cMinTemp, cMaxTemp);
+      fixRange(&humidity, cMinHumid, cMaxHumid);
+
+      send();
+
+      _lastMeasurement = millis();
+    }
+  }
+}
+
+void DHT22Node::setup()
+{
+  printCaption();
+  Homie.getLogger() << cIndent << "Reading interval: " << _measurementInterval << " s" << endl;
+
+  if (dht)
+  {
+    dht->begin();
+  }
+}