Fix return of getNodeID

- #define MESH_BLANK_ID 65535
- getNodeID() function was using a 0 value to determine if it was a
self-identification. Changed to use MESH_BLANK_ID as
self-identification, and 0 now reports correctly for master node
- Issue identified per #24 &
#25

RF24Mesh.cpp

@@ -158,16 +158,19 @@ uint16_t RF24Mesh::getAddress(uint8_t nodeID){
 
 int RF24Mesh::getNodeID(uint16_t address){
 
-    if(!address){
+    if(address == MESH_BLANK_ID){
       return _nodeID;
-    }
+    }else
+    if(address == 0){
+      return 0;
+    }    
 
-    if(!getNodeID()){ //Master Node
+    if(!mesh_address){ //Master Node
         for(uint8_t i=0; i<addrListTop; i++){
             if(addrList[i].address == address){
                 return addrList[i].nodeID;
             }
-        }   
+        }
     }else{
       if(mesh_address == MESH_DEFAULT_ADDRESS){ return -1; }
       RF24NetworkHeader header( 00, MESH_ID_LOOKUP );
@@ -304,7 +307,7 @@ bool RF24Mesh::requestAddress(uint8_t level){
 	//Serial.print("response took");
 	//Serial.println(millis()-timr);
 	#ifdef MESH_DEBUG_SERIAL
-    uint8_t mask = 7;	char addr[5] = "    ", count=3; uint16_t newAddr;	
+    uint8_t mask = 7;	char addrs[5] = "    ", count=3; uint16_t newAddr;	
 	#endif
 	uint8_t registerAddrCount = 0;
 
@@ -322,11 +325,11 @@ bool RF24Mesh::requestAddress(uint8_t level){
 	  Serial.print( millis() );Serial.print(F(" Set address: "));
 	  newAddr = addrResponse.new_address;
 	  while(newAddr){
-		addr[count] = (newAddr & mask)+48; //get the individual Octal numbers, specified in chunks of 3 bits, convert to ASCII by adding 48
+		addrs[count] = (newAddr & mask)+48; //get the individual Octal numbers, specified in chunks of 3 bits, convert to ASCII by adding 48
 		newAddr >>= 3;
 		count--;
 	  }
-	  Serial.println(addr);
+	  Serial.println(addrs);
 	#elif defined (MESH_DEBUG_PRINTF)
 	  printf("Set address 0%o rcvd 0%o\n",mesh_address,addrResponse.new_address);
 	#endif

RF24Mesh.h

@@ -24,6 +24,7 @@
 #define MESH_ADDR_RELEASE 197
 #define MESH_ID_LOOKUP 198
 
+#define MESH_BLANK_ID 65535
 
 /**
  * @file RF24Mesh.h
@@ -135,7 +136,7 @@ class RF24Mesh
    * 
    * @return Returns the unique identifier (1-255) or -1 if not found.
    */
-  int getNodeID(uint16_t address=0);
+  int getNodeID(uint16_t address=MESH_BLANK_ID);
 
   /**
    * Tests connectivity of this node to the mesh.