/*
  This file holds the code that checks for ETH link status
  This is part of the DHCP process
*/


#include "streamAtlona.h"

#include "UserInterface.h"
#include "SynchronizationTask.h"

#include "lwip/netif.h"

#include "phy_bsp.h"

#include "stm32f7xx_eth_conf.h"
#include "stm32f7xx_eth.h"

#include "DHCP_Client.h"


static xTaskHandle xLinkProcTaskHandle = NULL;

static bool RemoteLink = FALSE;


//*******************************************************************************
// ETH Link task
//*******************************************************************************
void vETH_LinkTask( void *pvParameters )
{   
  bool LinkStat = FALSE, SavedEthLinkStatus = FALSE;
  bool RemoteSavedEthLinkStatus = FALSE;
  struct netif *netif = (struct netif *)pvParameters;  
  
  xLinkProcTaskHandle = xTaskGetCurrentTaskHandle();
	
  
  while(1)
  {
    if(PHY_GetLinkStatus(PHY3_ADDRESS, &LinkStat) == TRUE)
    {
      if((SavedEthLinkStatus != LinkStat) || (RemoteSavedEthLinkStatus != RemoteLink))
      {    
        if(SavedEthLinkStatus != LinkStat)
        {
          // local ETH link status change
          streamPrint(DefaultInterface,FALSE, "TX ETH Link is: %s\r\n", (LinkStat == FALSE)? "OFF" : "ON");
        }
        
        if(RemoteSavedEthLinkStatus != RemoteLink)
        {
          // remote ETH link status change
          streamPrint(DefaultInterface,FALSE, "RX ETH Link is: %s\r\n", (RemoteLink == FALSE)? "OFF" : "ON");
        }        
      
           
        // update the devices ETH data
        if((LinkStat == TRUE) || (RemoteLink == TRUE))
        {
          // only if both sides were disconnected and one was connected 
          if((SavedEthLinkStatus == FALSE) && (RemoteSavedEthLinkStatus == FALSE))
          {
            netif_set_link_up(netif);
					
#ifdef USE_DHCP					
            SetDhcpState(eDHCP_Start);
#endif
					
		  			SET_ETH_LINK_LED_ON();
          }  
        }
        else
        {
          netif_set_link_down(netif);
					
#ifdef USE_DHCP					
          SetDhcpState(eDHCP_LinkDown);
#endif					
					
					SET_ETH_LINK_LED_OFF();					
        }
        
        SavedEthLinkStatus = LinkStat;
        RemoteSavedEthLinkStatus = RemoteLink;        
      }  
    } 
   
    
    vTaskDelay((100 / portTICK_RATE_MS));
  }
}

//-----------------------------------------------------------------------------

void SuspendLinkTask(void)
{
  vTaskSuspend(xLinkProcTaskHandle);
} 

//-----------------------------------------------------------------------------

void ResumeLinkTask(void)
{
  vTaskResume(xLinkProcTaskHandle);
} 

//-----------------------------------------------------------------------------

bool IsEthLinkUp(void)
{
  bool RetVal = FALSE;
  bool LinkStat = FALSE;

  if(PHY_GetLinkStatus(PHY3_ADDRESS, &LinkStat) == TRUE)
  {
    RetVal = LinkStat;
  }
  
  return RetVal;  
}

//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------

void SetRemoteLink(bool Link)
{
  RemoteLink = Link;
}