ttp223: add Java isr callbacks

Signed-off-by: Petre Eftime <petre.p.eftime@intel.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>

src/ttp223/javaupm_ttp223.i

@@ -1,6 +1,15 @@
-%module javaupm_ttp223
+%module (directors=1, docstring="TTP223 Touch Sensor") javaupm_ttp223
+
 %include "../upm.i"
 
+%feature("director") IsrCallback;
+
+%ignore generic_callback_isr;
+%include "../IsrCallback.h"
+
+%apply int {mraa::Edge}
+
+
 %{
     #include "ttp223.h"
 %}

src/ttp223/ttp223.cxx

@@ -39,6 +39,7 @@ TTP223::TTP223(unsigned int pin) {
       }
     mraa_gpio_dir(m_gpio, MRAA_GPIO_IN);
     m_name = "ttp223";
+    m_isrInstalled = false;
 }
 
 TTP223::~TTP223() {
@@ -57,3 +58,26 @@ int TTP223::value() {
 bool TTP223::isPressed() {
     return this->value() == 1;
 }
+
+#ifdef JAVACALLBACK
+void TTP223::installISR(mraa::Edge level, IsrCallback *cb)
+{
+  installISR(level, generic_callback_isr, cb);
+}
+#endif
+
+void TTP223::installISR(mraa::Edge level, void (*isr)(void *), void *arg)
+{
+  if (m_isrInstalled)
+    uninstallISR();
+
+  // install our interrupt handler
+  mraa_gpio_isr(m_gpio, (mraa_gpio_edge_t) level, isr, arg);
+  m_isrInstalled = true;
+}
+
+void TTP223::uninstallISR()
+{
+  mraa_gpio_isr_exit(m_gpio);
+  m_isrInstalled = false;
+}

src/ttp223/ttp223.h

@@ -24,7 +24,11 @@
 #pragma once
 
 #include <string>
-#include <mraa/gpio.h>
+#include <mraa/gpio.hpp>
+
+#if defined(SWIGJAVA) || defined(JAVACALLBACK)
+#include "../IsrCallback.h"
+#endif
 
 namespace upm {
 /**
@@ -87,9 +91,32 @@ class TTP223 {
          */
         bool isPressed();
 
+        /**
+         * Installs an interrupt service routine (ISR) to be called when
+         * the button is activated or deactivated.
+         *
+         * @param fptr Pointer to a function to be called on interrupt
+         * @param arg Pointer to an object to be supplied as an
+         * argument to the ISR.
+         */
+#if defined(SWIGJAVA) || defined(JAVACALLBACK)
+        void installISR(mraa::Edge level, IsrCallback *cb);
+#else
+        void installISR(mraa::Edge level, void (*isr)(void *), void *arg);
+#endif
+        /**
+         * Uninstalls the previously installed ISR
+         *
+         */
+        void uninstallISR();
+
     protected:
+#if defined(SWIGJAVA) || defined(JAVACALLBACK)
+        void installISR(mraa::Edge level, void (*isr)(void *), void *arg);
+#endif
         std::string         m_name; //!< name of this sensor
         mraa_gpio_context   m_gpio; //!< GPIO pin
+        bool                m_isrInstalled;
 };
 
 }