void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ST32!");
  unsigned char a = 10;
  unsigned char b = 30;
  unsigned char c;
  c=a+b;
  Serial.println(c);
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
}