开启freertos后，想在主函数的while(1)中实现led的翻转，发现无法实现。
int main(void){/* USER CODE BEGIN 1 *//* 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();MX_USART1_UART_Init();/* USER CODE BEGIN 2 *//* USER CODE END 2 *//* Call init function for freertos objects (in freertos.c) */MX_FREERTOS_Init();/* Start scheduler */osKernelStart();/* We should never get here as control is now taken by the scheduler *//* Infinite loop *//* USER CODE BEGIN WHILE */while (1){HAL_GPIO_TogglePin(GPIOF,GPIO_PIN_9);HAL_Delay(1000);/* USER CODE END WHILE *//* USER CODE BEGIN 3 */}/* USER CODE END 3 */}分析原因：
osKernelStart();/* We should never get here as control is now taken by the scheduler */osKernelStart();
语句后面有一个注释：
/* We should never get here as control is now taken by the scheduler */
我们永远不会到达这里，因为控制权现在被调度器拿走了
