Configures the specified pin to behave either as an input or an output.
pin: the number of the pin whose mode you want to set. (int)
mode: either INPUT or OUTPUT. (int)
None
int ledPin = 13; // LED connected to digital pin 13 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 }
configures pin number 13 to work as an output pin.