mpu9250: Initial implementation

This driver was implemented using a Grove IMU 9DOF V2.0 (mpu9250).

Signed-off-by: Jon Trulson <jtrulson@ics.com>
Signed-off-by: sisinty sasmita patra <sisinty.s.patra@intel.com>

src/mpu9150/mpu9250.cxx

@@ -0,0 +1,50 @@
+/*
+ * Author: Jon Trulson <jtrulson@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.
+ */
+
+#include <iostream>
+#include <unistd.h>
+#include <stdlib.h>
+
+#include "mpu9250.h"
+
+using namespace upm;
+using namespace std;
+
+MPU9250::MPU9250 (int bus, int address, int magAddress) :
+  MPU9150(bus, address, magAddress)
+{
+}
+
+MPU9250::~MPU9250()
+{
+}
+
+float MPU9250::getTemperature()
+{
+  // this equation is taken from the datasheet.  The 333.87 value was
+  // taken from the adafruit code (it is referenced as
+  // Temp_Sensitivity in the datasheet, but no value is provided there).
+  return (m_temp / 333.87) + 21.0;
+}
+