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Class

GPIO

Name

pinMode()
Examples
import processing.io.*;

void setup() {
  GPIO.pinMode(4, GPIO.INPUT);

  // On the Raspberry Pi, GPIO 4 is pin 7 on the pin header,
  // located on the fourth row, above one of the ground pins

  frameRate(0.5);
}

void draw() {
  // sense the input pin
  if (GPIO.digitalRead(4) == GPIO.HIGH) {
    fill(255);
  } else {
    fill(204);
  }
  stroke(255);
  ellipse(width/2, height/2, width*0.75, height*0.75);
}
Description Configures a pin to act either as input or output

Unlike on Arduino, where pins are implicitly set to inputs by default, it is necessary to call this function for any pin you want to access, including input pins.
Syntax
.pinMode(pin, mode)
Parameters
pin int: GPIO pin
mode int: GPIO.INPUT or GPIO.OUTPUT
Returnsvoid
Updated on April 30, 2017 02:33:20pm EDT

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