1 files changed, 26 insertions, 23 deletions
diff --git a/source/arduino/loop.rst b/source/arduino/loop.rst
index 165b7b0..b558edf 100644
--- a/source/arduino/loop.rst
+++ b/source/arduino/loop.rst
@@ -1,39 +1,42 @@
+.. highlight:: cpp
+
 .. _arduino-loop:
 
 loop()
 ======
 
-After creating a setup() function, which initializes and sets the
-initial values, the loop() function does precisely what its name
-suggests, and loops consecutively, allowing your program to change
-and respond. Use it to actively control the Arduino board.
-
-
+After creating a :ref:`setup() <arduino-setup>` function, which
+initializes your sketch, the ``loop()`` function gets called
+repeatedly, allowing your program to change and respond.  Use it to
+actively control your Maple board.
 
 Example
-~~~~~~~
+-------
 
 ::
 
-     
-    int buttonPin = 3;
-    
+
+    int buttonPin = 38;
+
     // setup initializes serial and the button pin
-    void setup()
-    {
-      beginSerial(9600);
+    void setup() {
+      SerialUSB.begin();
       pinMode(buttonPin, INPUT);
     }
-    
-    // loop checks the button pin each time,
-    // and will send serial if it is pressed
-    void loop()
-    {
-      if (digitalRead(buttonPin) == HIGH)
-        serialWrite('H');
-      else
-        serialWrite('L');
-    
+
+    // loop() checks the button pin each time it executes,
+    // and will print 'H' if it is pressed, 'L' otherwise
+    void loop() {
+      if (digitalRead(buttonPin) == HIGH) {
+        SerialUSB.println('H');
+      } else {
+        SerialUSB.println('L');
+      }
+
       delay(1000);
     }
 
+See Also
+--------
+
+- :ref:`setup() <arduino-setup>`