int main(void)

{

  /* USER CODE BEGIN 1 */

    static int led_work_status;

  /* USER CODE END 1 */

  /* MCU Configuration----------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */

  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */

  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */

  MX_GPIO_Init();

  /* USER CODE BEGIN 2 */

  /* USER CODE END 2 */

  /* Infinite loop */

  /* USER CODE BEGIN WHILE */

  while ()

  {

  /* USER CODE END WHILE */

  /* USER CODE BEGIN 3 */

        if(systick.second_flag == ){

            systick.second_flag = ;

            led_work_status += ;

            if(led_work_status > )led_work_status = ;

            switch (led_work_status){

                case  :

                    LED_RED_ON;

                    LED_GREEN_OFF;

                    LED_BLUE_OFF;

                    break;

                case  :

                    LED_RED_OFF;

                    LED_GREEN_ON;

                    LED_BLUE_OFF;

                    break;

                case :

                    LED_RED_OFF;

                    LED_GREEN_OFF;

                    LED_BLUE_ON;

                    break;

                default:

                    break;

            }

        }

  }

  /* USER CODE END 3 */

}

void HAL_SYSTICK_Callback(void)

{

    //中断时间1ms，每ims进入一次中断

    static int counter = ;

    if((counter ++ % ) == ){

        systick.second_flag = ;

    }

}