void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, STM32!");
 pinMode(11, OUTPUT);
 pinMode(12, OUTPUT);
 pinMode(13, OUTPUT);

}

void loop() {

  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
  digitalWrite(13,1);
  delay(500); // this speeds up the simulation
  digitalWrite(13,0);

  digitalWrite(12,1);
  delay(500); // this speeds up the simulation
  digitalWrite(12,0);

  digitalWrite(11,1);
  delay(500); // this speeds up the simulation
  digitalWrite(11,0);



}