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pinMode()

Description

Configures the specified pin to behave either as an input or an output. See the description of digital pins for details.

Syntax

pinMode(pin, mode)

Parameters

pin: the number of the pin whose mode you wish to set

mode: either INPUT or OUTPUT

Returns

None

Example

int ledPin = 13;                 // LED connected to digital pin 13void setup(){pinMode(ledPin, OUTPUT);      // sets the digital pin as output}void loop(){digitalWrite(ledPin, HIGH);   // sets the LED ondelay(1000);                  // waits for a seconddigitalWrite(ledPin, LOW);    // sets the LED offdelay(1000);                  // waits for a second}

Note

The analog input pins can be used as digital pins, referred to as numbers 14 (analog input 0) to 19 (analog input 5).

See also

• constants
• digitalWrite()
• digitalRead()
• Tutorial: Description of the pins on an Arduino board

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