sx1276: Initial implementation

This driver was developed using an SX1276 based shield on the Galileo
G2.  It requires 3.3v of operation.  It does not work with Edison, due
to SPI issues.

Signed-off-by: Jon Trulson <jtrulson@ics.com>

src/sx1276/javaupm_sx1276.i

@@ -0,0 +1,36 @@
+%module(directors="1") javaupm_sx1276
+%include "../upm.i"
+%include "cpointer.i"
+%include "typemaps.i"
+%include "arrays_java.i";
+%include "../java_buffer.i"
+
+%feature("director") IsrCallback;
+
+%ignore generic_callback_isr;
+%include "../IsrCallback.h"
+
+%apply int {mraa::Edge};
+%apply float *INOUT { float *x, float *y, float *z };
+
+%typemap(jni) float* "jfloatArray"
+%typemap(jstype) float* "float[]"
+%typemap(jtype) float* "float[]"
+
+%typemap(javaout) float* {
+    return $jnicall;
+}
+
+%typemap(out) float *getAccelerometer {
+    $result = JCALL1(NewFloatArray, jenv, 3);
+    JCALL4(SetFloatArrayRegion, jenv, $result, 0, 3, $1);
+    delete [] $1;
+}
+
+%ignore getAccelerometer(float *, float *, float *);
+
+%{
+    #include "sx1276.h"
+%}
+
+%include "sx1276.h"