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

int main(void){
     HAL_Init();

    // Configure System Clock
    SystemClock_Config();

    // Initialize GPIO
    MX_GPIO_Init();

    while (1)
    {
        // Turn ON LED
        HAL_GPIO_WritePin(GPIOA, GPIO_PIN_5, GPIO_PIN_SET);
        HAL_Delay(1000);

        // Turn OFF LED
        HAL_GPIO_WritePin(GPIOA, GPIO_PIN_5, GPIO_PIN_RESET);
        HAL_Delay(1000);
    }

}