Best Practice Continuous WiFi Connection (WIP)

wifi_station_continuous.ino

#include <Arduino.h>

#if defined(ESP8266) 
  #include <ESP8266WiFi.h> 
#elif defined(ESP32) 
  #include <WiFi.h> 
#endif 

// #include "secrets.h" 
#ifndef SECRETS_H 
 #define SECRETS_H 
 const char WIFI_SSID[]              = "WIFI_SSID_HERE"; 
 const char WIFI_PASSWORD[]          = "WIFI_PASSWORD_HERE"; 
#endif 

/*
 * Station connected 
 * @param WiFiEventStationModeConnected stationInfo struct of String ssid, uint8 bssid[6], uint8 channel
 */
void onSTAConnected(WiFiEventStationModeConnected stationInfo) { 
  Serial.printf("Connected to %s\n", stationInfo.ssid.c_str()); 
} 

/*
 * Got IP 
 * @param WiFiEventStationModeGotIP ipInfo struct of IPAddress ip, IPAddress mask, IPAddress gw 
 */
void onSTAGotIP(WiFiEventStationModeGotIP ipInfo) { 
  // Serial.printf(F("Connected: %s\n"), WiFi.status() == WL_CONNECTED ? "yes" : "no"); 
  // Serial.printf(F("Got IP: %s\n"), ipInfo.ip.toString().c_str()); 
} 
  
/*
 * Station disconnected 
 * @param WiFiEventStationModeDisconnected disconnectedInfo struct of String ssid, uint8 bssid[6], WiFiDisconnectReason reason 
 * WiFiDisconnectReason, see https://github.com/esp8266/Arduino/blob/master/libraries/ESP8266WiFi/src/ESP8266WiFiType.h
 */
void onSTADisconnected(WiFiEventStationModeDisconnected disconnectInfo) { 
  // Serial.printf(F("Disconnected from SSID: %s\n"), disconnectInfo.ssid.c_str()); 
  // Serial.printf(F("Reason: %d\n"), disconnectInfo.reason); 
  // WiFi.reconnect();
} 
  
void connectToWiFi() { 
  // Serial.println(F("Connecting to WiFi ..."));
  WiFi.persistent(false);
  WiFi.mode(WIFI_STA); 
  WiFi.begin(WIFI_SSID, WIFI_PASSWORD); 
} 
 
void setup() {
  // WiFi
  static WiFiEventHandler e1, e2, e3; 

  // Other code. For example: Serial.begin(115200);

  // WiFi
  e1 = WiFi.onStationModeGotIP(onSTAGotIP); 
  e2 = WiFi.onStationModeConnected(onSTAConnected); 
  e3 = WiFi.onStationModeDisconnected(onSTADisconnected); 
  connectToWiFi();

  // Other code 
} 

void loop() {
  // Use WiFi as client, server, etc
}