const int buttonPin = 4;
const int ledPin = 5;
int buttonState = 0;
void setup() {
Serial.begin(115200);
pinMode(buttonPin, INPUT);
pinMode(ledPin, OUTPUT);
}
void loop()
{
buttonState = digitalRead(buttonPin);
Serial.println(buttonState);
if (buttonState == HIGH)
{
digitalWrite(ledPin, HIGH);
} else
{
digitalWrite(ledPin, LOW);
}
}