add feature to show temp and hum in web gui

src/Temperature.cpp

@@ -8,26 +8,22 @@ void Temperature::init() {
     dht.begin();
 }
 
-double Temperature::getTemp() {
-    sensors_event_t event;
-    dht.temperature().getEvent(&event);
-    if (isnan(event.temperature)) {
+float Temperature::getTemp() {
+    float temp = dht.readTemperature();
+    Serial.println("read temp is: " + String(temp));
+    if (isnan(temp)) {
         return -1;
-    }
-    else {
-        return event.temperature;
+    } else {
+        return temp;
     }
 }
 
-double Temperature::getHum() {
-    sensors_event_t event;
-    dht.humidity().getEvent(&event);
-    if (isnan(event.relative_humidity)) {
+float Temperature::getHum() {
+    float hum = dht.readHumidity();
+    Serial.println("read hum is: " + String(hum));
+    if (isnan(hum)) {
         return -1;
-    }
-    else {
-
-       return event.relative_humidity;
-
+    } else {
+        return hum;
     }
 }

src/Temperature.h

@@ -6,16 +6,28 @@
 
 #include <Adafruit_Sensor.h>
 #include <DHT.h>
-#include <DHT_U.h>
 
 class Temperature {
 public:
-    Temperature(): dht(4, DHT22){};
+    Temperature() : dht(4, DHT22){};
 
+    /**
+     * initialize the temperature sensor
+     */
     void init();
-    double getTemp();
-    double getHum();
+
+    /**
+     * read the temperature value in C
+     * @return float value of temperature
+     */
+    float getTemp();
+
+    /**
+     * read current humidity value in %
+     * @return float value of humidity
+     */
+    float getHum();
 
 private:
-    DHT_Unified dht;
+    DHT dht;
 };

src/WifiManager.cpp

@@ -30,6 +30,9 @@ void WifiManager::init() {
     } else {
         Serial.println("Wifi Setup failed!");
     }
+
+    // init temperature sensor
+    temp.init();
 }
 
 WifiManager::WifiManager() : server(80), lastPumpTime(0), lastWaterOutage(0), lastPumpDuration(0) {}
@@ -104,6 +107,9 @@ void WifiManager::handleRoot() {
     index_html += "<div>Drucksensor: " + String((digitalRead(DruckSensorPin) ? "EIN" : "AUS")) + "</div>";
     index_html += "<div>Wassersensor: " + String((digitalRead(WasserSensorPin) ? "EIN" : "AUS")) + "</div>";
 
+    index_html += "</br><div>Temperatur: " + String(this->temp.getTemp()) + "C</div>";
+    index_html += "<div>Relative Luftfeuchtigkeit: " + String(this->temp.getHum()) + "%</div>";
+
     index_html += "</body></html>";
 
     server.send(200, "text/html", index_html);

src/WifiManager.h

@@ -7,6 +7,7 @@
 #include <Arduino.h>
 #include <ESP8266WiFi.h>
 #include <ESP8266WebServer.h>
+#include "Temperature.h"
 
 class WifiManager {
 public:
@@ -53,6 +54,7 @@ private:
     static const uint8_t DruckSensorPin = 12;
 
     ESP8266WebServer server;
+    Temperature temp;
 
     void handleRoot();