void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32-S2!");
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10);
   int l = 0;
   int sum = 1;
    Serial.println(l);
  pinMode(19, OUTPUT);
   // this speeds up the simulation
   l = l + sum;
   if(l>1222){
    sum = -1;
   }
}