reworked mqtt for new server + added watchdog

SensorActorUnit/SensorActorUnit.ino

@@ -7,6 +7,11 @@
 
 #include <SPI.h>
 #include "RF24.h"
+#include <Ticker.h>
+
+const uint32_t wdtTimeout = 8388607;  //maximum for the ESP8266
+uint32_t LastWdgFeeding;
+Ticker timer;
 
 /****************** User Config ***************************/
 /***      Set this radio as radio number 0 or 1         ***/
@@ -40,6 +45,20 @@ RF24 radio(D4,D8);
 
 byte addresses[][6] = {"1Node","2Node"};
 
+void ICACHE_RAM_ATTR resetModule() {
+  /*Serial.print("Current time: ");
+  Serial.println(millis());
+  Serial.print("Last fed: ");
+  Serial.println(LastWdgFeeding);*/
+
+  //restart if the program hangs for more than 10min...
+  if (millis() - LastWdgFeeding > 600000) {
+    Serial.print("Restarting due to watchdog!");
+    ESP.restart();
+  }
+  timer1_write(wdtTimeout);
+}
+
 void setup() {
   Serial.begin(115200);
   
@@ -74,6 +93,10 @@ void setup() {
   digitalWrite(pinGaragenTorSchalter, HIGH);
 
   TorStatusChanged = true;
+
+  timer1_attachInterrupt(resetModule); 
+  timer1_enable(TIM_DIV256, TIM_EDGE, TIM_SINGLE);
+  timer1_write(wdtTimeout);
 }
 
 
@@ -140,6 +163,9 @@ if (TorStatusChanged == true)  {
 
     //go back to listening
     TorStatusChanged = false;
+
+    //feed the watchdog...    
+    LastWdgFeeding = millis();
   }
 
 
@@ -152,6 +178,9 @@ if (TorStatusChanged == true)  {
     
     if( radio.available()){
                                                                     // Variable for the received timestamp
+      //feed the watchdog...    
+      LastWdgFeeding = millis();
+
       while (radio.available()) {                                   // While there is data ready
         len = radio.getDynamicPayloadSize();
         radio.read( &gotmsg, len );                                 // Get the payload
@@ -191,7 +220,7 @@ if (TorStatusChanged == true)  {
    }
  }
 
-/****************** Control Logic ***************************/  
+  /****************** Control Logic ***************************/  
   if ((digitalRead(pinStatusGaragenTor1) != TorStatus1)||(digitalRead(pinStatusGaragenTor2) != TorStatus2)) {
     TorStatus1 = digitalRead(pinStatusGaragenTor1);
     TorStatus2 = digitalRead(pinStatusGaragenTor2);