split C code into header- and implementation-files

things/DeviceDht.h

@@ -27,69 +27,4 @@ class DeviceDht : public Device {
     HomieNode heatindexNode{"heatindex", "heatindex"};
 };
 
-void DeviceDht::deviceSetup() {
-  pinMode(pin, INPUT);
-  dht.begin();
-}
-
-void DeviceDht::deviceRegister() {
-  Homie.registerNode(humidityNode);
-  Homie.registerNode(temperatureNode);
-  Homie.registerNode(heatindexNode);
-}
-
-// compare float values
-bool isEqual(float a, float b, float epsilon=0.001) {
-  return fabs(a - b) <= epsilon * fabs(a);
-}
-
-void DeviceDht::deviceLoop() {
-  if (millis() - lastSentDHT >= INTERVAL_DHT * 1000UL || lastSentDHT == 0) {
-    float previousHumidity = humidity;
-    float previousTemperature = temperature;
-    float previousHeatindex = heatindex;
-    humidity = dht.readHumidity();        // read humidity as a percent
-    temperature = dht.readTemperature();  // read temperature as Celsius
-    heatindex = dht.computeHeatIndex(temperature, humidity, false);
-
-    // check if any reads failed and exit early
-    if (isnan(humidity) || isnan(temperature)) {
-      Serial.println("Failed to read from DHT sensor!");
-      return;
-    }
-
-    if (!isEqual(humidity, previousHumidity)) {
-      Serial.print("humidity: ");
-      Serial.println(humidity);
-      if (!Homie.setNodeProperty(humidityNode, "value", String(humidity), true)) {
-        Serial.println("Sending failed");
-      }
-    } else {
-      Serial.println("humidity unchanged");
-    }
-
-    if (!isEqual(temperature, previousTemperature)) {
-      Serial.print("temperature: ");
-      Serial.println(temperature);
-      if (!Homie.setNodeProperty(temperatureNode, "value", String(temperature), true)) {
-        Serial.println("Sending failed");
-      }
-    } else {
-      Serial.println("temperature unchanged");
-    }
-
-    if (!isEqual(heatindex, previousHeatindex)) {
-      Serial.print("heatindex: ");
-      Serial.println(heatindex);
-      if (!Homie.setNodeProperty(heatindexNode, "value", String(heatindex), true)) {
-        Serial.println("Sending failed");
-      }
-    } else {
-      Serial.println("heatindex unchanged");
-    }
-
-    lastSentDHT = millis();
-  }
-}
-
 #endif