grove_mcfled: Add C++ and JS examples, utilizing existing GroveLed driver.

The module adds examples that utilize the existing GroveLed driver for
the Grove Multi Color Flash LED.

Signed-off-by: Jon Trulson <jtrulson@ics.com>
Signed-off-by: Zion Orent <zorent@ics.com>
Signed-off-by: John Van Drasek <john.r.van.drasek@intel.com>

examples/CMakeLists.txt

 add_executable (rfr359f-example rfr359f.cxx)
 add_executable (biss0001-example biss0001.cxx)
 add_executable (my9221-example my9221.cxx)
+add_executable (grove_mcfled-example grove_mcfled.cxx)
 
 include_directories (${PROJECT_SOURCE_DIR}/src/hmc5883l)
 include_directories (${PROJECT_SOURCE_DIR}/src/grove)
 target_link_libraries (rfr359f-example rfr359f ${CMAKE_THREAD_LIBS_INIT})
 target_link_libraries (biss0001-example biss0001 ${CMAKE_THREAD_LIBS_INIT})
 target_link_libraries (my9221-example my9221 ${CMAKE_THREAD_LIBS_INIT})
+target_link_libraries (grove_mcfled-example grove ${CMAKE_THREAD_LIBS_INIT})

examples/grove_mcfled.cxx

+/*
+ * Author: Jon Trulson <jtrulson@ics.com>
+ * Copyright (c) 2014-2015 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 "grove.h"
+
+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 grove LED on D2.  Here we are controlling a Grove
+  // Multi-color flash LED.  We just just need to turn it on - it will
+  // then cycle through various colors (red, green, blue, purple) on it's
+  // own until turned off.
+  upm::GroveLed* led = new upm::GroveLed(2);
+
+  // start the light show
+  led->on();
+
+  // just sleep until interrupted
+  while (shouldRun)
+    sleep(1);
+  
+//! [Interesting]
+
+  led->off();
+  cout << "Exiting..." << endl;
+
+  delete led;
+  
+  return 0;
+}

examples/javascript/grove_mcfled.js

+/*jslint node:true, vars:true, bitwise:true, unparam:true */
+/*jshint unused:true */
+/*
+* Author: Zion Orent <zorent@ics.com>
+* Copyright (c) 2015 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.
+*/
+
+var upmled = require("jsupm_grove");
+// Initialize on GPIO 2
+var myled = new upmled.GroveLed(2);
+myled.on();
+
+// Dummy setInterval, just to keep program from quitting
+// This way, the LED turns off when you quit the program
+var myInterval = setInterval(function()
+{
+	;
+}, 1000);
+
+// When exiting: turn off LED, clear interval, and print message
+process.on('SIGINT', function()
+{
+	clearInterval(myInterval);
+	myled.off();
+	console.log("Exiting...");
+	process.exit(0);
+});