RTT如何加入网线掉线再接检测

发布于 2019-07-08 17:32:56 浏览：1748 订阅该版

4 个回答

zhangjun 2019-07-08

这家伙很懒，什么也没写！

whj467467222 认证专家 2019-07-08

开源，分享，交流，共同进步

cychen 2019-07-09

这家伙很懒，什么也没写！

Jokeoo 2020-11-06

这家伙很懒，什么也没写！

/**
  * @brief  check eth link status
  * @param  pbuf: pbuf to be freed
  * @retval None
  */
static void rt_hw_dp83848_check_link_status_thread( void *parameter )
{
#define DP83848_CHECK_LINK_DELAY_TIME   (500)
#define DP83848_CHECK_LINK_PIN          GET_PIN(E, 5)
  
  int PHYLinkState = 0;
  
  struct netdev *netdev = (struct netdev *) parameter;
  struct netif *netif = (struct netif *)netdev->user_data;
  
  RT_ASSERT(netdev);
  RT_ASSERT(netif);
  
  rt_pin_mode( DP83848_CHECK_LINK_PIN, PIN_MODE_INPUT );
  
  while (1)
  {
    rt_thread_delay(DP83848_CHECK_LINK_DELAY_TIME);
    
    PHYLinkState = rt_pin_read( DP83848_CHECK_LINK_PIN );
    
    if ( netif_is_link_up( netif ) && ( PHYLinkState != 0 ) )
    {
      eth_device_linkchange( &dp83848_device.parent, RT_FALSE );
      
      LOG_I("DP823848 link down");
    }
    else if ( !netif_is_link_up( netif ) && ( PHYLinkState == 0 ) )
    {
      eth_device_linkchange( &dp83848_device.parent, RT_TRUE );
      
      LOG_I("DP823848 link up");
    }
  }
}

/**
  * @brief  check eth link status
  * @param  pbuf: pbuf to be freed
  * @retval None
  */
int rt_hw_dp83848_check_link_status( void )
{
#define DP83848_LINK_THREAD_TICK                (5)
#define DP83848_LINK_THREAD_STACK_SIZE          (1024)
#define DP83848_LINK_THREAD_PRIORITY            (RT_THREAD_PRIORITY_MAX - 1)

rt_thread_t tid;
    struct netdev *netdev = RT_NULL;
    char tname[RT_NAME_MAX] = {0};
    
    netdev = netdev_get_by_name( dp83848_device.parent.parent.parent.name );
    RT_ASSERT(netdev);
    
    rt_snprintf(tname, RT_NAME_MAX, "%s_check", netdev->name);
    
    /* create dp83848 link status polling thread  */
    tid = rt_thread_create(tname, rt_hw_dp83848_check_link_status_thread, (void *)netdev,
                           DP83848_LINK_THREAD_STACK_SIZE, DP83848_LINK_THREAD_PRIORITY, DP83848_LINK_THREAD_TICK);
    if (tid != RT_NULL)
    {
        rt_thread_startup(tid);
    }

return RT_EOK;
}