pinMode ():
[Digital I/O]
Description
Configures the specified pin to behave either as an input or an output. See the Digital Pins page for details on the functionality of the pins.
As of Arduino 1.0.1, it is possible to enable the internal pullup resistors with the mode INPUT_PULLUP. Additionally, the INPUT mode explicitly disables the internal pullups.
Syntax
Void setup ()
{
pinMode (pin, mode);
}
Parameters
pin: the Arduino pin number to set the mode of.
mode: INPUT, OUTPUT, or INPUT_PULLUP. See the Digital Pins page for a more complete description of the functionality.
Returns
Nothing
Example Code:
The code makes the digital pin 13 OUTPUT and Toggles it HIGH and LOW
void setup() {
pinMode(13, OUTPUT); // sets the digital pin 13 as output
}
void loop() {
digitalWrite(13, HIGH); // sets the digital pin 13 on
delay(1000); // waits
for a second
digitalWrite(13, LOW); // sets
the digital pin 13 off
delay(1000); // waits
for a second
}
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