void setup() {
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(23, OUTPUT);
  pinMode(22, OUTPUT);
  pinMode(32, INPUT_PULLDOWN);
}
 
void loop() {
static unsigned long prevMs = 0; //Lab 4.2
unsigned long currMs = millis(); //Lab 4.2
   digitalWrite(23, digitalRead(32));
 
  if (currMs - prevMs >= 1000) { //Lab 4.2
    prevMs = currMs; // Lab 4.2
    digitalWrite(22, !digitalRead(22)); 
  }
}