- re-assign ID via I_ID_RESPONSE

- implement getParentNodeID()

libraries/MySensors/core/MySensorCore.cpp

@@ -203,6 +203,10 @@ uint8_t getNodeId() {
 	return _nc.nodeId;
 }
 
+uint8_t getParentNodeId() {
+	return _nc.parentNodeId;
+}
+
 ControllerConfig getConfig() {
 	return _cc;
 }

libraries/MySensors/core/MySensorCore.h

@@ -71,6 +71,11 @@ struct ControllerConfig {
  */
 uint8_t getNodeId();
 
+/**
+ * Return the parent node id.
+ */
+uint8_t getParentNodeId();
+
 /**
 * Each node must present all attached sensors before any values can be handled correctly by the controller.
 * It is usually good to present all attached sensors after power-up in setup().

libraries/MySensors/core/MyTransport.cpp

@@ -159,7 +159,7 @@ inline void transportProcess() {
 				}
 				return;
 			} else if (sender == GATEWAY_ADDRESS) {
-				if (type == I_ID_RESPONSE && _nc.nodeId == AUTO) {
+				if (type == I_ID_RESPONSE) {
 					_nc.nodeId = _msg.getByte();
 					if (_nc.nodeId == AUTO) {
 						// sensor net gateway will return max id if all sensor id are taken