STM32F469I DISCO，LED闪烁

最近学习使用STM32F469I DISCO刚开始用，想试着让led4闪烁，编译能通过可是始终不闪烁
工程是STM32 Cube自动生成的应该是没什么问题了，我看cube里面我设置的也是把pk3引脚打开了

这是我的代码，东西比较多，我写的部分在while（1）里面再main函数末尾，里面的delay函数是我用ChatGPT生成的。也拿出来

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();

/* Configure the peripherals common clocks */
  PeriphCommonClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_CRC_Init();
  MX_DMA2D_Init();
  MX_DSIHOST_DSI_Init();
  MX_FMC_Init();
  MX_I2C1_Init();
  MX_I2C2_Init();
  MX_LTDC_Init();
  MX_QUADSPI_Init();
  MX_SAI1_Init();
  MX_SDIO_SD_Init();
  MX_TIM1_Init();
  MX_USART3_UART_Init();
  MX_USART6_UART_Init();
  MX_FATFS_Init();
  /* USER CODE BEGIN 2 */



  /* USER CODE END 2 */

  /* USER CODE BEGIN RTOS_MUTEX */
  /* add mutexes, ... */
  /* USER CODE END RTOS_MUTEX */

  /* USER CODE BEGIN RTOS_SEMAPHORES */
  /* add semaphores, ... */
  /* USER CODE END RTOS_SEMAPHORES */

  /* USER CODE BEGIN RTOS_TIMERS */
  /* start timers, add new ones, ... */
  /* USER CODE END RTOS_TIMERS */

  /* USER CODE BEGIN RTOS_QUEUES */
  /* add queues, ... */
  /* USER CODE END RTOS_QUEUES */

  /* Create the thread(s) */
  /* definition and creation of defaultTask */
  osThreadDef(defaultTask, StartDefaultTask, osPriorityNormal, 0, 4096);
  defaultTaskHandle = osThreadCreate(osThread(defaultTask), NULL);

  /* USER CODE BEGIN RTOS_THREADS */
  /* add threads, ... */
  /* USER CODE END RTOS_THREADS */

  /* Start scheduler */
  osKernelStart();
  /* We should never get here as control is now taken by the scheduler */
  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */
      HAL_GPIO_WritePin(GPIOK,GPIO_PIN_3 , GPIO_PIN_SET);
      delay_ms(1000);
      HAL_GPIO_WritePin(GPIOK,GPIO_PIN_3 , GPIO_PIN_RESET);    
      delay_ms(1000);


    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}

这是delay函数

void delay_ms(uint32_t milliseconds) 
{
    volatile uint32_t i, j;

    for (i = 0; i < milliseconds; i++) {
        for (j = 0; j < 5000; j++) {
            __NOP(); // 空操作，用于产生延时
        }
    }
}

然后这部分是我截取的关于pk3有关引脚的定义

上拉选上，是不驱动不起来