Docs: Updating pinmode.rst

Convert to board-specific values; make the language friendlier.

1 files changed, 25 insertions, 22 deletions

diff --git a/source/lang/api/pinmode.rst b/source/lang/api/pinmode.rst
index 8cee3e5..643e26e 100644
--- a/source/lang/api/pinmode.rst
+++ b/source/lang/api/pinmode.rst
@@ -20,26 +20,29 @@ Library Documentation
 Discussion
 ----------
 
-``pinMode()`` is usually called within :ref:`lang-setup` in order to
+pinMode() is usually called within :ref:`lang-setup` in order to
 configure a pin for a certain usage (although it may be called
 anywhere).
 
 Example
 -------
 
-::
+This example uses pinMode() to set up the pin connected to the
+built-in LED as an output.  Once this is done,
+:ref:`lang-digitalwrite` can be used to turn the pin ``HIGH`` and
+``LOW``, which turn the LED on and off.
 
-    int ledPin = 13;                 // LED connected to digital pin 13
+::
 
     void setup() {
-      pinMode(ledPin, OUTPUT);      // sets the digital pin as output
+        pinMode(BOARD_LED_PIN, OUTPUT);      // sets the LED pin as output
     }
 
     void loop() {
-      digitalWrite(ledPin, HIGH);   // sets the LED on
-      delay(1000);                  // waits for a second
-      digitalWrite(ledPin, LOW);    // sets the LED off
-      delay(1000);                  // waits for a second
+        digitalWrite(BOARD_LED_PIN, HIGH);   // sets the LED on
+        delay(1000);                         // waits for a second
+        digitalWrite(BOARD_LED_PIN, LOW);    // sets the LED off
+        delay(1000);                         // waits for a second
     }
 
 Arduino Compatibility
@@ -48,17 +51,16 @@ Arduino Compatibility
 .. TODO check out Arduino vs. Maple static discilpline cutoffs to
 .. ensure accuracy of following:
 
-The libmaple implementation of ``pinMode()`` supports the ``INPUT``
-and ``OUTPUT`` modes with semantics identical to that of the Arduino
-function (however, be advised that the Maple, as a 3.3V device, will
-only drive 3.3V to an ``OUTPUT`` pin that has been set ``HIGH``).
+On Maple, pinMode() supports the ``INPUT`` and ``OUTPUT`` modes in the
+same way as Arduino (however, remember that the Maple, as a 3.3V
+device, will only drive 3.3V to an ``OUTPUT`` pin that has been set
+``HIGH``, instead of 5V like on Arduino).
 
-``INPUT_ANALOG`` and ``PWM`` modes were added because the Maple does
-not distinguish between analog and digital pins the same way the
-Arduino does.  Unlike the Arduino, you **must call** ``pinMode()`` to
-set up a pin for these purposes before a call to, e.g.,
-:ref:`lang-analogRead`.  In practice, this should only add a few lines
-to your :ref:`lang-setup` function.
+``INPUT_ANALOG`` and ``PWM`` modes were added because the Maple
+doesn't separate the analog and digital pins the same way Arduino
+does.  Unlike on Arduino, you **must call** pinMode() to set up a pin
+for these purposes before a call to, e.g., :ref:`lang-analogRead`.
+This should only add a few lines to your :ref:`lang-setup` function.
 
 .. TODO [0.1.0] verify following before putting it in:
 
@@ -69,9 +71,10 @@ to your :ref:`lang-setup` function.
 See Also
 --------
 
--  :ref:`lang-constants`
--  :ref:`lang-digitalwrite`
--  :ref:`lang-digitalread`
--  Maple :ref:`GPIO <gpio>` reference page
+- :ref:`lang-board-values`
+- :ref:`lang-constants`
+- :ref:`lang-digitalwrite`
+- :ref:`lang-digitalread`
+- :ref:`gpio`
 
 .. include:: /arduino-cc-attribution.txt