LineFinder: Created LineFinder from GroveLineFinder

Signed-off-by: Abhishek Malik <abhishek.malik@intel.com>

examples/c++/CMakeLists.txt

@@ -155,6 +155,7 @@ add_example (ehr)
 add_example (groveehr)
 add_example (ta12200)
 add_example (grovelinefinder)
+add_example (linefinder)
 add_example (vdiv)
 add_example (grovevdiv)
 add_example (water)

examples/c++/linefinder.cxx

@@ -0,0 +1,66 @@
+/*
+ * Author: Jon Trulson <jtrulson@ics.com>
+ * Copyright (c) 2014 Intel Corporation.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <unistd.h>
+#include <iostream>
+#include <signal.h>
+#include "linefinder.hpp"
+
+using namespace std;
+
+int shouldRun = true;
+
+void sig_handler(int signo)
+{
+  if (signo == SIGINT)
+    shouldRun = false;
+}
+
+
+int main ()
+{
+  signal(SIGINT, sig_handler);
+
+//! [Interesting]
+  // Instantiate a  Line Finder sensor on digital pin D2
+  upm::LineFinder* finder = new upm::LineFinder(2);
+  
+  // check every second for the presence of white detection
+  while (shouldRun)
+    {
+      bool val = finder->whiteDetected();
+      if (val)
+        cout << "White detected." << endl;
+      else
+        cout << "Black detected." << endl;
+
+      sleep(1);
+    }
+//! [Interesting]
+
+  cout << "Exiting..." << endl;
+
+  delete finder;
+  return 0;
+}