I/O: Add examples

java/libraries/io/examples/SimpleOutput/SimpleOutput.pde

@@ -0,0 +1,27 @@
+import processing.io.*;
+boolean ledOn = false;
+
+// RPI.PIN5 refers to the physical pin 5 on the Raspberry Pi's
+// pin header, which is located on the third row, next to a
+// Ground pin
+
+void setup() {
+  GPIO.pinMode(RPI.PIN5, GPIO.OUTPUT);
+  // this is equivalent to addressing the pin with its GPIO number:
+  // GPIO.pinMode(3, GPIO.OUTPUT);
+  frameRate(0.5);
+}
+
+void draw() {
+  // make the LED blink
+  ledOn = !ledOn;
+  if (ledOn) {
+    GPIO.digitalWrite(RPI.PIN5, GPIO.LOW);
+    fill(204);
+  } else {
+    GPIO.digitalWrite(RPI.PIN5, GPIO.HIGH);
+    fill(255);
+  }
+  stroke(255);
+  ellipse(width/2, height/2, width*0.75, height*0.75);
+}