int main(void)

{

  /* USER CODE BEGIN 1 */

    static int led_work_status = ;//三色LED工作状态

    static int key_status = KEY_UP;//按键松开状态

  /* 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 */

    LED_RED_ON;                                         //初始化LED状态

  /* USER CODE END 2 */

  /* Infinite loop */

  /* USER CODE BEGIN WHILE */

//按键每按下一次切换一次LED状态

  while ()

  {

  /* USER CODE END WHILE */

  /* USER CODE BEGIN 3 */

        if(ARM_KEY_STATE == KEY_UP)key_status = KEY_UP;

        if(key_status == KEY_UP){

            if(ARM_KEY_STATE == KEY_DOWN){

                HAL_Delay();           //按键消抖

                if(ARM_KEY_STATE == KEY_DOWN){

                    key_status = KEY_DOWN;

                    led_work_status += ;

                    if(led_work_status > )led_work_status = ;

                    //²Ù×÷LED

                    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 */

}