reconnect wifi when connection is lost

src/main.cpp

@@ -22,12 +22,16 @@ interface the file .pio/build/esp32doit-devkit-v1/firmware.bin
 const char* host = "esp32ota";
 const char* ssid = "JoNelsDarlings";
 const char* password = "Paris2016";
+/*const char* ssid = "Rucksack";
+const char* password = "Muratina";*/
+
 
 // variabls to blink without delay:
 const int led = 2;
 unsigned long previousMillis = 0;  // will store last time LED was updated
 const long interval = 1000;        // interval at which to blink (milliseconds)
 int ledState = LOW;                // ledState used to set the LED
+int wifiState = WL_DISCONNECTED;   // Wifi-Connection Status
 
 WebServer server(80);
 
@@ -123,11 +127,8 @@ const char* serverIndex =
 /*
  * setup function
  */
-void setup(void) {
-  pinMode(led, OUTPUT);
-
-  Serial.begin(9600);
 
+void wifiSetup(void){
   // Connect to WiFi network
   WiFi.begin(ssid, password);
   Serial.println("");
@@ -158,6 +159,13 @@ void setup(void) {
     }
   }
   Serial.println("mDNS responder started");
+}
+
+void setup(void) {
+  pinMode(led, OUTPUT);
+  Serial.begin(9600);
+  wifiSetup();
+  
   /*return index page which is stored in serverIndex */
   server.on("/", HTTP_GET, []() {
     server.sendHeader("Connection", "close");
@@ -203,6 +211,18 @@ void setup(void) {
 }
 
 void loop(void) {
+  if (wifiState!=WiFi.status()) {
+    Serial.print("Wifi Status Change: ");
+    Serial.println(WiFi.status());
+    wifiState=WiFi.status();
+  }
+
+  // if we lost connection reconnect...
+  if (WL_CONNECTED != WiFi.status()){
+    WiFi.disconnect();
+    delay(1000);
+    wifiSetup();
+  }
   server.handleClient();
   delay(1);