Added new macros for installISR and applied where possible.

src/_upm.i

@@ -10,6 +10,56 @@
 }
 %enddef
 
+/* Define GETTER in the appropiate .i file with the getter function name
+*/
+%define JAVA_ADD_INSTALLISR_GPIO(UPM_Classname)
+%extend UPM_Classname {
+    void installISR(int gpio, mraa::Edge level, jobject runnable)
+    {
+      // delete any existing ISR and GPIO context
+      $self->uninstallISR();
+
+      // create gpio context
+      mraa::Gpio* swg_gpioIntr = $self->GETTER;
+
+      swg_gpioIntr->dir(mraa::DIR_IN);
+      swg_gpioIntr->isr(level, runnable);
+
+    }
+}
+%enddef
+
+/* Define INTERRUPT in the appropiate .i file with the interrupt type
+*/
+%define JAVA_ADD_INSTALLISR_INTERRUPT(UPM_Classname)
+%extend UPM_Classname {
+    void installISR(INTERRUPT intr, int gpio,
+                    mraa::Edge level, jobject runnable)
+    {
+        $self->installISR(intr, gpio, level, mraa_java_isr_callback, runnable);
+    }
+}
+%enddef
+
+%define JAVA_ADD_INSTALLISR_EDGE(UPM_Classname)
+%extend UPM_Classname {
+    void installISR(mraa::Edge level, jobject runnable)
+    {
+      $self->installISR(level, mraa_java_isr_callback, runnable);
+    }
+}
+%enddef
+
+%define JAVA_ADD_INSTALLISR_PIN(UPM_Classname)
+%extend UPM_Classname {
+    void installISR(int pin, jobject runnable)
+    {
+        $self->installISR(pin, mraa_java_isr_callback, runnable);
+    }
+
+}
+%enddef
+
 /* Macro for adding JNI loadLibrary dependency
     usage: JAVA_JNI_LOADLIBRARY(javaupm_rhusb)
 */