Add device timestamp to the accel data transmission2

Signed-off-by: John Walicki <[email protected]>

Author: johnwalicki

WatsonIoT/src/main.cpp

@@ -556,6 +556,7 @@ void Send10Seconds2Cloud() {
 
   // Load the key/value pairs into the serialized ArduinoJSON format
   status["device_id"] = deviceID ;
+  status["device_t"] = time(nullptr);
 
   // Generate an array of json objects that contain x,y,z arrays of 32 floats.
   // [{"x":[],"y":[],"z":[]},{"x":[],"y":[],"z":[]}]