Add examples for utilization of GPIO

examples/GPIO/DCmotors.cpp

@@ -0,0 +1,48 @@
+#include "GPIOlib.h"
+
+using namespace GPIO;
+
+int main()
+{
+	init();
+
+	//Move forward
+	controlLeft(FORWARD,50);
+	controlRight(FORWARD,50);
+	delay(1000);
+
+	//Stop
+	stopLeft();
+	stopRight();
+	delay(1000);
+
+	//Move backward
+	controlLeft(BACKWARD,50);
+	controlRight(BACKWARD,50);
+	delay(1000);
+
+	//Stop
+	stopLeft();
+	stopRight();
+	delay(1000);
+
+	//2 motors can work at different speeds.
+	controlLeft(FORWARD,30);
+	controlRight(FORWARD,40);
+	delay(1000);
+
+	//Stop
+	stopLeft();
+	stopRight();
+	delay(1000);
+
+	//Even directions can differ from each other.
+	controlLeft(BACKWARD,35);
+	controlRight(FORWARD,20);
+	delay(1000);
+
+	//Don't forget to stop all motors before exiting.
+	stopLeft();
+	stopRight();
+	return 0;
+}

examples/GPIO/decoderISR.cpp

@@ -0,0 +1,35 @@
+#include <cstdio>
+#include <cmath>
+#include "GPIOlib.h"
+
+using namespace std;
+using namespace GPIO;
+
+int readingLeft=0,readingRight=0;
+
+int main()
+{
+	init();
+
+	controlLeft(FORWARD,30);
+	controlRight(BACKWARD,40);
+
+	for(int i=0;i<10;i++)
+	{
+		resetCounter();
+		delay(1000);
+		getCounter(&readingLeft,&readingRight);
+		if(readingLeft==-1||readingRight==-1)
+		{
+			printf("Error!\n");
+			continue;
+		}
+		//Distance is in mm.
+		double distanceLeft=readingLeft*63.4*M_PI/390;
+		double distanceRight=readingRight*63.4*M_PI/390;
+		printf("Left wheel moved %.2lf cm, right wheel moved %.2lf cm in last second.\n",distanceLeft/10,distanceRight/10);
+	}
+	stopLeft();
+	stopRight();
+	return 0;
+}

examples/GPIO/servo.cpp

@@ -0,0 +1,18 @@
+#include "GPIOlib.h"
+
+using namespace GPIO;
+
+int main()
+{
+	init();
+
+	//THIS IS THE SAFE RANGE!
+	for(int i=-45;i<=45;i+=15)
+	{
+		turnTo(i);
+		delay(1000);
+	}
+
+	turnTo(0);
+	return 0;
+}