PRJ - ESP32 Digital IO (Arduino IDE)#
From: ESP32 Digital Inputs and Digital Outputs (Arduino IDE) —— Random Nerd Tutorials
// Complete Instructions:
// https://RandomNerdTutorials.com/esp32-digital-inputs-outputs-arduino/
// #include "Arduino.h"
// set pin numbers
const int buttonPin = 4; // the number of the pushbutton pin
const int ledPin = 5; // the number of the LED pin
// variable for storing the pushbutton status
int buttonState = 0;
void setup() {
// Serial.begin(115200);
Serial.begin(9600);
// initialize the pushbutton pin as an input
pinMode(buttonPin, INPUT);
// initialize the LED pin as an output
pinMode(ledPin, OUTPUT);
}
void loop() {
// read the state of the pushbutton value
buttonState = digitalRead(buttonPin);
Serial.println(buttonState);
// check if the pushbutton is pressed.
// if it is, the buttonState is HIGH
if (buttonState == HIGH) {
// turn LED on
digitalWrite(ledPin, HIGH);
} else {
// turn LED off
digitalWrite(ledPin, LOW);
}
}