kx122: Add Java/Javascript/Python examples

Implemented a swig interface file for the kx122 and added corresponding
swig language examples.  Also added an STL vector flavor for getting
acceleration values from the kx122.

Signed-off-by: Noel Eck <noel.eck@intel.com>

src/kx122/kx122.cxx

@@ -76,6 +76,14 @@ void KX122::getAccelerationData(float *x, float *y, float *z)
   }
 }
 
+std::vector<float> KX122::getAccelerationDataVector()
+{
+    std::vector<float> xyz(3);
+    getAccelerationData(&xyz[0], &xyz[1], &xyz[2]);
+
+    return xyz;
+}
+
 void KX122::softwareReset()
 {
   if(kx122_sensor_software_reset(m_kx122)){

src/kx122/kx122.hpp

@@ -22,6 +22,7 @@
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
 
+#include <vector>
 #include <mraa/gpio.hpp>
 
 #include "kx122.h"
@@ -105,6 +106,14 @@ namespace upm{
       */
       void getAccelerationData(float *x, float *y, float *z);
 
+      /**
+      Gets converted (m/s^2) accelerometer data from the sensor.
+
+      @return Acceleration vector [X, Y, Z]
+      @throws std::runtime_error on failure.
+      */
+      std::vector<float> getAccelerationDataVector();
+
       /**
       Performs a sensor software reset. The software reset clears the RAM of the sensor and resets all registers
       to pre-defined values.

src/kx122/kx122.i

@@ -0,0 +1,20 @@
+%include "../common_top.i"
+
+/* BEGIN Java syntax  ------------------------------------------------------- */
+#ifdef SWIGJAVA
+JAVA_JNI_LOADLIBRARY(javaupm_kx122)
+#endif
+/* END Java syntax */
+
+/* BEGIN Common SWIG syntax ------------------------------------------------- */
+%include "std_vector.i"
+%template(floatVector) std::vector<float>;
+
+%apply float *OUTPUT {float *x, float *y, float *z};
+
+%{
+#include "kx122.hpp"
+%}
+%include "kx122.h"
+%include "kx122.hpp"
+/* END Common SWIG syntax */