grove: add Grove LED JavaScript example

Signed-off-by: Sarah Knepper <sarah.knepper@intel.com>

examples/javascript/groveled.js

@@ -0,0 +1,46 @@
+/*
+ * Author: Sarah Knepper <sarah.knepper@intel.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.
+ */
+
+// Load Grove module
+var groveSensor = require('jsupm_grove');
+
+// Create the Grove LED object using GPIO pin 2
+var led = new groveSensor.GroveLed(2);
+
+// Print the name
+console.log(led.name());
+
+// Turn the LED on and off 10 times, pausing one second
+// between transitions
+var i = 0;
+var waiting = setInterval(function() {
+        if ( i % 2 == 0 ) {
+            led.on();
+        } else {
+            led.off();
+        }
+        i++;
+        if ( i == 20 ) clearInterval(waiting);
+        }, 1000);
+