From ebcd0d1d0b3061fcb57444e1dbe5829ef25705cd Mon Sep 17 00:00:00 2001
From: maniacbug <maniacbug@ymail.com>
Date: Thu, 3 Oct 2013 06:53:28 -0700
Subject: [PATCH] Add isValid

---
 RF24.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/RF24.h b/RF24.h
index 141bdab..18914f0 100644
--- a/RF24.h
+++ b/RF24.h
@@ -637,6 +637,15 @@ public:
    */
   bool testRPD(void) ;
 
+  /**
+   * Test whether this is a real radio, or a mock shim for
+   * debugging.  Setting either pin to 0xff is the way to
+   * indicate that this is not a real radio.
+   *
+   * @return true if this is a legitimate radio 
+   */
+  bool isValid() { return ce_pin != 0xff && csn_pin != 0xff; } 
+
   /**@}*/
 };