Re: [lwip-users] how lwip know internet cable is unplug

[vincent cui]

All

I write a simple routine to deal with it , it works well, 
static uint32_t ETH_GetNetifUporDown (void)
{
        return (ETH_ReadPHYRegister(PHY_ADDRESS, PHY_BSR) & PHY_Linked_Status) 
? 1:0;
}

Why do you use callback to handle it ?

锘?Vincent Cui
Sr.Firmware Engineer
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-----Original Message-----
From: address@hidden [mailto:address@hidden On Behalf Of Kieran Mansley
Sent: 2011年9月2日 19:03
To: address@hidden
Subject: Re: [lwip-users] how lwip know internet cable is unplug

On Fri, 2011-09-02 at 05:26 +0000, vincent cui wrote:
> When unplug internet cable, how lwip deal it ?

It doesn't.  Whether the link is up or not is of no real interest to a
TCP/IP stack.  It will just try to send packets, and the lower layers
(e.g. the driver you're using) have to deal with the link status.

Kieran


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