#define led 13
#define pb 12
#define Rled 6
#define Bled 5
#define Gled 3
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, STM32!");
  pinMode(13, OUTPUT);
  pinMode(12, INPUT_PULLUP);
  pinMode(6, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(3, OUTPUT);
}

void loop() {
  if (!digitalRead(pb))
  {
    while (!digitalRead(pb));
    digitalWrite(Rled, LOW);
    digitalWrite(Bled, HIGH);
    digitalWrite(Gled, HIGH);
    delay(1000);
    digitalWrite(Rled, HIGH);
    digitalWrite(Bled, LOW);
    digitalWrite(Gled, HIGH);// put your main code here, to run repeatedly:
    delay(1000); // this speeds up the simulation
    digitalWrite(Rled, HIGH);
    digitalWrite(Bled, HIGH);
    digitalWrite(Gled, LOW);
    delay(1000);
  }
}