add log output through mqtt

#135
//#define subjectTRACEtoMQTT Base_Topic Gateway_Name "/log" //uncomment if you want to see traces on /log topic

OpenMQTTGateway.ino

@@ -981,43 +981,64 @@ bool to_bool(String const& s) { // thanks Chris Jester-Young from stackoverflow
 //trace
 void trc(String msg){
   #ifdef TRACE
-  Serial.println(msg);
+    Serial.println(msg);
+  #endif
+  #ifdef subjectTRACEtoMQTT
+    pub(subjectTRACEtoMQTT,msg);
   #endif
 }
 
 void trc(int msg){
   #ifdef TRACE
-  Serial.println(msg);
+    Serial.println(msg);
+  #endif
+  #ifdef subjectTRACEtoMQTT
+    pub(subjectTRACEtoMQTT,msg);
   #endif
 }
 
 void trc(unsigned int msg){
   #ifdef TRACE
-  Serial.println(msg);
+    Serial.println(msg);
+  #endif
+  #ifdef subjectTRACEtoMQTT
+    pub(subjectTRACEtoMQTT,msg);
   #endif
 }
 
 void trc(long msg){
   #ifdef TRACE
-  Serial.println(msg);
+    Serial.println(msg);
+  #endif
+  #ifdef subjectTRACEtoMQTT
+    pub(subjectTRACEtoMQTT,msg);
   #endif
 }
 
 void trc(unsigned long msg){
   #ifdef TRACE
-  Serial.println(msg);
+    Serial.println(msg);
+  #endif
+  #ifdef subjectTRACEtoMQTT
+    pub(subjectTRACEtoMQTT,msg);
   #endif
 }
 
 void trc(double msg){
   #ifdef TRACE
-  Serial.println(msg);
+    Serial.println(msg);
+  #endif
+  #ifdef subjectTRACEtoMQTT
+    pub(subjectTRACEtoMQTT,msg);
   #endif
 }
 
 void trc(float msg){
   #ifdef TRACE
-  Serial.println(msg);
+    Serial.println(msg);
+  #endif
+  #ifdef subjectTRACEtoMQTT
+    pub(subjectTRACEtoMQTT,msg);
   #endif
 }
 
@@ -1128,6 +1149,18 @@ void pub(char * topic, unsigned long payload){
     client.publish(topic,val);
 }
 
+void pub(char * topic, long payload){
+    char val[11];
+    sprintf(val, "%l", payload);
+    client.publish(topic,val);
+}
+
+void pub(char * topic, double payload){
+    char val[16];
+    sprintf(val, "%d", payload);
+    client.publish(topic,val);
+}
+
 void pub(String topic, unsigned long payload){
     char val[11];
     sprintf(val, "%lu", payload);

User_config.h

@@ -170,5 +170,7 @@ const byte subnet[] = { 255, 255, 255, 0 }; //ip adress
 #define TimeBetweenReadingSYS 120000 // time between system readings (like memory)
 #define subjectSYStoMQTT  Base_Topic Gateway_Name "/SYStoMQTT"
 
+//#define subjectTRACEtoMQTT Base_Topic Gateway_Name "/log" //uncomment if you want to see traces on /log topic
+
 /*-------------------ACTIVATE TRACES----------------------*/
 #define TRACE 1  // commented =  trace off, uncommented = trace on