grove: split code base for grove sensors into individual files

Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>

src/grove/grovebutton.hpp

@@ -1,7 +1,8 @@
 /*
- * Place-holder Header for Documentation and future API change
- *
- * Copyright (c) 2014 Intel Corporation.
+ * Authors: Brendan Le Foll <brendan.le.foll@intel.com>
+ *          Mihai Tudor Panu <mihai.tudor.panu@intel.com>
+ *          Sarah Knepper <sarah.knepper@intel.com>
+ * Copyright (c) 2014 - 2016 Intel Corporation.
  *
  * Permission is hereby granted, free of charge, to any person obtaining
  * a copy of this software and associated documentation files (the
@@ -22,7 +23,15 @@
  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
- 
+
+#pragma once
+
+#include <string>
+#include <mraa/gpio.hpp>
+#include "grovebase.hpp"
+
+namespace upm {
+
 /**
  * @library grove
  * @sensor grovebutton
@@ -40,3 +49,56 @@
  * @image html grovebutton.jpg
  * @snippet grovebutton.cxx Interesting
  */
+class GroveButton: public Grove {
+    public:
+        /**
+         * Grove button constructor
+         *
+         * @param gpio Pin to use
+         */
+        GroveButton(unsigned int pin);
+        /**
+         * Grove button destructor
+         */
+        ~GroveButton();
+        /**
+         * Gets the name of the sensor
+         *
+         * @return Name of this sensor
+         */
+        std::string name();
+        /**
+         * Gets the value from the GPIO pin
+         *
+         * @return Value from the GPIO pin
+         */
+        int value();
+
+        /**
+         * 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, jobject runnable);
+#else
+        void installISR(mraa::Edge level, void (*isr)(void *), void *arg);
+#endif
+        /**
+         * Uninstalls the previously installed ISR
+         *
+         */
+        void uninstallISR();
+
+    private:
+#if defined(SWIGJAVA) || defined(JAVACALLBACK)
+        void installISR(mraa::Edge level, void (*isr)(void *), void *arg);
+#endif
+        bool m_isrInstalled;
+        std::string m_name;
+        mraa_gpio_context m_gpio;
+};
+}