first commit

Software/NodeJS/tests/led_blink.js

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+var GrovePi = require('../libs').GrovePi
+
+// put led in port D3 
+var led = new GrovePi.sensors.DigitalOutput(3);
+
+// status will tell us if the led is on or off
+var status = 0;
+
+var board;
+
+function toggle() {
+
+    if (status == 0){
+        console.log("toggle off");
+        led.turnOff();
+        status = 1;
+    }
+    else {
+        console.log("toggle on");
+        led.turnOn();
+        status = 0;
+    }
+}
+
+function start() {
+  console.log('starting')
+
+  board = new GrovePi.board({
+    debug: true,
+    onError: function(err) {
+      console.log('TEST ERROR')
+    },
+      
+    onInit: function(res) {
+        console.log("OnInit");
+        if (res) {
+            // call toggle every second
+            setInterval(toggle, 1000)
+        }
+    }
+  })
+
+  board.init();
+} // end start()
+ 
+
+// called on Ctrl-C. 
+// close the board and clean up 
+function onExit(err) {
+  console.log('ending')
+  board.close()
+  process.removeAllListeners()
+  process.exit()
+  if (typeof err != 'undefined')
+    console.log(err)
+}
+
+// starts the test
+start()
+// catches ctrl+c event
+process.on('SIGINT', onExit)
+