Added arduino libs

libraries/EnableInterrupt/examples/SimpleWithLibrary/Useless.cpp

@@ -0,0 +1,26 @@
+// FOR TESTING, TO DEMONSTRATE HOW TO USE ENABLEINTERRUPT IN A LIBRARY.
+// See Useless.h for more information.
+#include "Useless.h"
+
+volatile uint8_t uselessVariable=0;
+
+void uselessFunction() {
+	uselessVariable++;
+}
+
+void UselessClass::init(uint8_t pin, uint8_t mode) {
+	pinMode(pin, INPUT_PULLUP);
+	enableInterrupt(pin, uselessFunction, mode);
+}
+
+uint8_t UselessClass::getUselessVariable() {
+	return uselessVariable;
+}
+
+void UselessClass::reset() {
+	uselessVariable=0;
+}
+
+void UselessClass::disable(uint8_t pin) {
+	disableInterrupt(pin);
+}