From 3f02bcb49fca21a39d8c0d11c287addd9f7d7724 Mon Sep 17 00:00:00 2001
From: Matthijs Kooijman <matthijs@stdin.nl>
Date: Tue, 4 Jun 2013 11:28:30 +0200
Subject: [PATCH] Add SoftwareSerial::stopListening()

This allows one to explicitly stop a SoftwareSerial instance from
listening, without having to make another one listening.
---
 libraries/SoftwareSerial/SoftwareSerial.cpp | 11 +++++++++++
 libraries/SoftwareSerial/SoftwareSerial.h   |  1 +
 2 files changed, 12 insertions(+)

diff --git a/libraries/SoftwareSerial/SoftwareSerial.cpp b/libraries/SoftwareSerial/SoftwareSerial.cpp
index 8bf56e5..a429f7d 100644
--- a/libraries/SoftwareSerial/SoftwareSerial.cpp
+++ b/libraries/SoftwareSerial/SoftwareSerial.cpp
@@ -195,6 +195,17 @@ bool SoftwareSerial::listen()
   return false;
 }
 
+// Stop listening. Returns true if we were actually listening.
+bool SoftwareSerial::stopListening()
+{
+  if (active_object == this)
+  {
+    active_object = NULL;
+    return true;
+  }
+  return false;
+}
+
 //
 // The receive routine called by the interrupt handler
 //
diff --git a/libraries/SoftwareSerial/SoftwareSerial.h b/libraries/SoftwareSerial/SoftwareSerial.h
index 31bd229..e0e4746 100644
--- a/libraries/SoftwareSerial/SoftwareSerial.h
+++ b/libraries/SoftwareSerial/SoftwareSerial.h
@@ -87,6 +87,7 @@ public:
   bool listen();
   void end();
   bool isListening() { return this == active_object; }
+  bool stopListening();
   bool overflow() { bool ret = _buffer_overflow; _buffer_overflow = false; return ret; }
   int peek();