Use a robust asynchronous MQTT client

src/sensor.cpp

@@ -0,0 +1,13 @@
+#include "sensor.h"
+
+void initialize_sensor(DHT &sensor) { sensor.begin(); }
+
+void read_values(DHT &sensor, float *data) {
+    float temperature = sensor.readTemperature();
+    float humidity = sensor.readHumidity();
+
+    Serial.println("Data fetched from the sensor");
+
+    data[0] = temperature;
+    data[1] = humidity;
+}