debug works in interrupt mode now, needs some refactoring, MBUSYield stops the whole system

cube/User/Src/mqttComm.c

@@ -2,6 +2,7 @@
 #include <logger.h>
 #include <PontCoopScheduler.h>
 #include <wizHelper.h>
+#include <show.h>
 
 #include <stdint.h>
 #include <string.h>
@@ -61,7 +62,10 @@ static void messageArrived(MessageData* md)
 }
 
 static void mqttHandler(void *handle) {
-//    MQTTYield(&mqttClient, data.keepAliveInterval);
+    show(DEBUG_2, ON);
+    MQTTYield(&mqttClient, data.keepAliveInterval);
+    show(DEBUG_2, OFF);
+
 }
 
 void mqttCommInit(void *handle) {