// #include <SPI.h>
// #include <TFT_eSPI.h>
bool hasrun = false;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
}

void loop() {
  int m = 0, s = 0, tt = 500;
  for(int t = 0; t < tt + 1; t++){
    m = t / 60;
    s = t % 60;
    if(hasrun == false){
      // Serial.print(m + String(" ") + s + String(" "));
      if(m < 1){
        Serial.printf(":%02d\n", s);
      }else{
        Serial.printf("%d:%02d\n", m, s);
      }
      if(t >= tt) hasrun = true;
    }
  }
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
}