From fcb92436d9abd3a86c9b74d6732a3c26c620e856 Mon Sep 17 00:00:00 2001
From: Marcelo Aquino <celonunes@gmail.com>
Date: Thu, 9 Jul 2015 14:19:57 -0300
Subject: [PATCH] fix repeater loop for I_FIND_PARENT

A repeater calls findParentNode() inside process() when receives a
I_FIND_PARENT and nc.distance is invalid, this could cause a loop
---
 libraries/MySensors/MySensor.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/libraries/MySensors/MySensor.cpp b/libraries/MySensors/MySensor.cpp
index 2e2d70e..099a927 100644
--- a/libraries/MySensors/MySensor.cpp
+++ b/libraries/MySensors/MySensor.cpp
@@ -302,6 +302,12 @@ void MySensor::setupNode() {
 }
 
 void MySensor::findParentNode() {
+	static boolean findingParentNode = false;
+
+	if (findingParentNode)
+		return;
+	findingParentNode = true;
+
 	failedTransmissions = 0;
 
 	// Set distance to max
@@ -316,6 +322,7 @@ void MySensor::findParentNode() {
 
 	// Wait for ping response.
 	wait(2000);
+	findingParentNode = false;
 }
 
 boolean MySensor::sendRoute(MyMessage &message) {