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

void loop() {
  // put your main code here, to run repeatedly:
  delay(150); // this speeds up the simulation
  digitalWrite(lEDRed, HIGH);
  delay(150);
  digitalWrite(lEDRed, LOW);
  delay(150);
  digitalWrite(Ledyelow, HIGH);
  delay(150);
  digitalWrite(Ledyelow, LOW);
  delay(150);
  digitalWrite(LedGreen, HIGH);
  delay(150);
  digitalWrite(LedGreen, LOW);
}