status message, better reconnect and sounds

Doorbell-Speaker.ino

@@ -5,11 +5,13 @@ https://www.dfrobot.com/wiki/index.php/DFPlayer_Mini_SKU:DFR0299
 https://github.com/pcbreflux/espressif/blob/master/esp32/arduino/sketchbook/ESP32_DFPlayer_full/ESP32_DFPlayer_full.ino
 https://github.com/pcbreflux/espressif/blob/master/esp32/arduino/sketchbook/ESP32_DFPlayer_full/setup.png
 https://randomnerdtutorials.com/esp32-web-server-arduino-ide/
+https://randomnerdtutorials.com/solved-reconnect-esp32-to-wifi/
 */
 
 /* Anmerkungen:
 - Übertragung aus Arduino IDE mit Board "ESP32 Dev Module", siehe https://github.com/espressif/arduino-esp32/blob/master/docs/arduino-ide/boards_manager.md
 - Zum Übertragen an das ESP-32-WROOM muss (manchmal?) der BOOT-Button gedrückt werden
+- Die Library DFRobotDFPlayerMini-1.0.3.zip muss in der Arduino IDE über Sketch > Bibliothek einbinden > .ZIP-Bibliothek geöffnet werden
 */
 
 #include <Arduino.h>
@@ -29,7 +31,9 @@ const int ledPin = 26;
 
 int charCount = 0;
 
-
+unsigned long previousMillis = 0;
+unsigned long interval = 120000;
+unsigned long lastcheck = 120000;
 
 void setup()
 {
@@ -76,14 +80,13 @@ void setupServer() {
   server.begin();
   delay(500);
   
-  dfPlayer.play(2);  //Play the second mp3
+  dfPlayer.play(2);  // play the second mp3
   
   digitalWrite(ledPin, HIGH);
   Serial.println("Setup completed");
 }
 
 void loop() {
-
   if ((WiFi.status() == WL_CONNECTED)) {
 
     WiFiClient client = server.available();   // Listen for incoming clients
@@ -107,10 +110,13 @@ void loop() {
               client.println();
               
               // turns the GPIOs on and off
-              if (header.indexOf("GET /bell/on") >= 0) {
+              if (header.indexOf("GET /") >= 0) {
+                client.println("{ \"status\": \"true\" }");
+              }
+              else if (header.indexOf("GET /bell/on") >= 0) {
                 dfPlayer.play(1);  //Play the first mp3
               }
-              else  if (header.indexOf("GET /volume/") >= 0) { // yes, I know this is not RESTful
+              else if (header.indexOf("GET /volume/") >= 0) { // yes, I know this is not RESTful
                 String str1 = header;
                 str1 = str1.substring(header.indexOf("GET /volume/") + 12);
                 volume = str1.substring(0, str1.indexOf(" ")).toInt();
@@ -162,9 +168,15 @@ void loop() {
       Serial.println("");
     }
   }
-  else {
+  else if (lastcheck >= interval) {
     Serial.println("Reconnecting...");
-    setupServer();
+    dfPlayer.play(3);  // play the third mp3
+    WiFi.disconnect();
+    WiFi.reconnect();
+    previousMillis = millis();
+  }
+  else {
+    lastcheck = millis() - previousMillis;
   }
 }
 
@@ -212,10 +224,12 @@ String printDetail(uint8_t type, int value){
           return "Error: In Advertise";
           break;
         default:
+          return "UNKNOWN ERROR";
           break;
       }
       break;
     default:
+      return "UNKNOWN TYPE";
       break;
   }
 }