Config class as singleton with initializer in setup

src/config.h

@@ -41,11 +41,21 @@ public:
 
 class Config
 {
+
 public:
+    static Config &getInstance()
+    {
+        static Config instance;
+        return instance;
+    }
+
+private:
+    Config() = default;
     Config(const Config &) = delete;
     Config &operator=(const Config &) = delete;
 
-    Config()
+public:
+    void init()
     {
         FSmount mount; // scoped mount of the filesystem
 
@@ -102,7 +112,7 @@ public:
                 LOG_ERROR("Unable to remove config.json");
             }
             LOG_WARN("Configuration reset, Restarting");
-        }; //filesystem is unmounted here
+        }; // filesystem is unmounted here
         delay(500);
         esp_restart();
     }

src/main.cpp

@@ -18,6 +18,10 @@
 
 #include "utils.h"
 
+/////////////// GLOBALS ///////////////
+Config& conf = Config::getInstance();
+/////////////// GLOBALS ///////////////
+
 void callback(char *topic, uint8_t *payload, unsigned int length)
 {
   std::string pl;
@@ -42,13 +46,11 @@ void setup()
 {
   Serial.begin(9600);
   LOG_ATTACH_SERIAL(Serial);
+  conf.init();
 }
 
 void loop()
 {
-  /////////////// GLOBALS ///////////////
-  Config conf = Config();
-  /////////////// GLOBALS ///////////////
   const uint8_t baseRegister(0x00);
   uint16_t k(0);
   uint8_t sensors(0);
@@ -79,11 +81,11 @@ void loop()
   mqtt.setServer(conf.m_mqttHost.c_str(), conf.m_mqttPort);
   mqtt.setCallback(callback);
   //////////////// NETWORK ////////////////
-
-  //////////////// NETWORK ////////////////
-  /////////////// CALLBACK ////////////////
+  
+    //////////////// NETWORK ////////////////
+    /////////////// CALLBACK ////////////////
   Network.onEvent(
-      [&conf, &eth, &rtc, &mqtt, &buzzer, &led](arduino_event_id_t event, arduino_event_info_t info) -> void
+      [&eth, &rtc, &mqtt, &buzzer, &led](arduino_event_id_t event, arduino_event_info_t info) -> void
       {
         eth.onEvent(event, info); // Arduino Ethernet event handler
         if (!eth.isConnected())