1. ESP32 GPIO Programming

Bob wants to use an LED connected to GPIO pin 4 on his ESP32. Which of the following code snippets will correctly configure the pin to control the LED?

Select Answer

void setup() { 
  pinMode(4, INPUT);
}

void loop() {
}

void setup(){
  pinMode(4, OUTPUT);
}

void loop(){
}

void setup() {
  pinMode(4, INPUT_PULLUP);
}
void loop() {
}

void setup() {
  pinMode(4, INPUT_PULLDOWN);
}

void loop() {
}