java: fixed grove API and added some examples

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

examples/java/GroveLED_ex.java

@@ -0,0 +1,22 @@
+public class GroveLED_ex {
+	static {
+		try {
+			System.loadLibrary("javaupm_grove");
+		} catch (UnsatisfiedLinkError e) {
+			System.err.println("error in loading native library");
+			System.exit(-1);
+		}
+	}
+
+	public static void main (String args[]) throws InterruptedException {
+		upm_grove.GroveLed led = new upm_grove.GroveLed(2);
+		
+		for (int i = 0; i < 10; ++i) {
+			led.on();
+			Thread.sleep(1000);
+			led.off();
+			Thread.sleep(1000);
+		}
+		led.delete();
+	}
+}

examples/java/GroveLight_ex.java

@@ -0,0 +1,24 @@
+public class GroveLight_ex {
+	static {
+		try {
+			System.loadLibrary("javaupm_grove");
+		} catch (UnsatisfiedLinkError e) {
+			System.err.println("error in loading native library");
+			System.exit(-1);
+		}
+	}
+
+	public static void main (String args[]) throws InterruptedException {
+		upm_grove.GroveLight gl = new upm_grove.GroveLight(2);
+		
+		while (true) {
+			float raw_value = gl.raw_value();
+			float value = gl.value();
+
+			System.out.println("raw value: " + raw_value);
+			System.out.println("value: " + value);
+			
+			Thread.sleep(1000);
+		}
+	}
+}

examples/java/GroveSlide_ex.java

@@ -0,0 +1,24 @@
+public class GroveSlide_ex {
+	static {
+		try {
+			System.loadLibrary("javaupm_grove");
+		} catch (UnsatisfiedLinkError e) {
+			System.err.println("error in loading native library");
+			System.exit(-1);
+		}
+	}
+
+	public static void main (String args[]) throws InterruptedException {
+		upm_grove.GroveSlide slide = new upm_grove.GroveSlide(0);
+		
+		while (true) {
+			float raw_value = slide.raw_value();
+			float value = slide.voltage_value();
+
+			System.out.println("raw value: " + raw_value);
+			System.out.println("value: " + value);
+			
+			Thread.sleep(2500);
+		}
+	}
+}

examples/java/GroveSpeaker_ex.java

@@ -0,0 +1,19 @@
+public class GroveSpeaker_ex {
+	static {
+		try {
+			System.loadLibrary("javaupm_grovespeaker");
+		} catch (UnsatisfiedLinkError e) {
+			System.err.println("error in loading native library");
+			System.exit(-1);
+		}
+	}
+
+	public static void main (String args[]) throws InterruptedException {
+		upm_grovespeaker.GroveSpeaker speaker = new upm_grovespeaker.GroveSpeaker(3);
+		
+		speaker.playAll();
+		speaker.playSound('c', true, "med");
+		
+		temp.delete();
+	}
+}

examples/java/GroveTemp_ex.java

@@ -0,0 +1,26 @@
+public class GroveTemp_ex {
+	static {
+		try {
+			System.loadLibrary("javaupm_grove");
+		} catch (UnsatisfiedLinkError e) {
+			System.err.println("error in loading native library");
+			System.exit(-1);
+		}
+	}
+
+	public static void main (String args[]) throws InterruptedException {
+		upm_grove.GroveTemp temp = new upm_grove.GroveTemp(3);
+		
+		for (int i = 0; i < 10; ++i) {
+			
+			int celsius = temp.value();
+			int fahrneheit = celsius * 2 + 32;
+
+			System.out.println("Celsius: " + celsius);
+			System.out.println("Fahrneheit: " + fahrneheit);
+			
+			Thread.sleep(1000);
+		}
+		temp.delete();
+	}
+}

src/grove/javaupm_grove.i

@@ -5,4 +5,19 @@
     #include "grove.h"
 %}
 
+%typemap(jni) mraa_result_t "jint"
+%typemap(jstype) mraa_result_t "int"
+%typemap(jtype) mraa_result_t "int"
+
+
+%typemap(javaout) mraa_result_t {
+    return $jnicall;
+}
+
+
+%typemap(out) mraa_result_t {
+        $result = (int)$1;
+}
+
 %include "grove.h"
+