Report actual temp and humidity to c8y

platformio.ini

@@ -18,4 +18,6 @@ lib_deps =
  marvinroger/AsyncMqttClient@^0.8.2
  me-no-dev/AsyncTCP@^1.1.1
  knolleary/PubSubClient@^2.8
+ adafruit/DHT sensor library@^1.4.1
+ adafruit/Adafruit Unified Sensor@^1.1.4
 build_flags = -D ESP32 -D CORE_DEBUG_LEVEL=5

src/main.cpp

@@ -4,13 +4,17 @@
 #else //ESP8266
 #include <ESP8266WiFi.h>
 #endif
-#include "Credentials.h"
 
 #ifndef CONFIGURATION_H
 #define CONFIGURATION_H
 #include "Configuration.h"
 #endif
 
+#include "DHT.h"
+#define DHTPIN 26
+#define DHTTYPE DHT21 // AM2301
+DHT dht(DHTPIN, DHTTYPE);
+
 #define FORMAT_SPIFFS_IF_FAILED true
 
 WiFiClientSecure _wifiClient = WiFiClientSecure();
@@ -54,6 +58,7 @@ void setup()
  Configuration _config;
  Settings_t settings = _config.getSettings(SPIFFS, Serial);
 
+ // Connect to Wifi
  WiFi.begin(settings.wifiSsid, settings.wifiPassword);
  Serial.print("Connecting to WiFi");
  while (WiFi.status() != WL_CONNECTED)
@@ -63,8 +68,8 @@ void setup()
  }
  Serial.println("connected to wifi");
 
+ // Connect to Cumulocity
  connectCumulocityServer(settings, !_config.isPersisted(SPIFFS));
-
  if (!_config.isPersisted(SPIFFS))
  {
  Credentials received = _client.getCredentials();
@@ -73,13 +78,25 @@ void setup()
  settings.tenantId = received.tenant;
  _config.persistSettings(SPIFFS, settings);
  }
+
+ // Init temp/humidity sensor library
+ dht.begin();
 }
 
 void loop()
 {
  delay(1000);
  _client.loop();
- _client.createMeasurement("Temperature", "T", "20.5", (char *)"*C");
+
+ float temperature = dht.readTemperature();
+ char tempStr[10];
+ sprintf(tempStr, "%f", temperature);
+ _client.createMeasurement("c8y_Temperature", "T", tempStr, (char *)"*C");
+
+ float humidity = dht.readHumidity();
+ char humidityStr[10];
+ sprintf(humidityStr, "%f", humidity);
+ _client.createMeasurement("Humidity", "H", humidityStr, (char *)"%\t");
 
  int8_t rssi = WiFi.RSSI();
  char rssiStr[10];