pinMode()

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,  OUTPUTINPUT_PULLUP or INPUT_PULLDOWN

 

Returns

None

 

Example

int ledPin = 14;                 // LED connected to digital pin 14

void setup()
{
  pinMode(ledPin, OUTPUT);      // sets the digital 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
}

 

Note

The analog input pins can be used as digital pins, referred to as A0, A1, etc.

 

See also

 

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