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Diffstat (limited to 'source/lang/api/pinmode.rst')
| -rw-r--r-- | source/lang/api/pinmode.rst | 47 |
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 |