Re: [lwip-users] LWIP connection problem

[Jens Nielsen]

Hi

Last time I checked the ST drivers this was exactly the problem, Jan is 
correct. Furthermore ST only did auto negotiation in HAL_ETH_Init() and 
it returns an error if the cable is not connected, I have removed that 
code from my projects and manage auto negotiation myself but maybe you 
can get away with simply calling HAL_ETH_Init() when the cable is 
connected instead of from the netif init

//Jens

On 2018-08-27 09:58, Jan Menzel wrote:
> Hi!
>         What you're reporting sounds to me as if you're missing to check the
> line status or if you link status check is not working properly. Usually
> you've to poll the phy and react to link status changes by updating the
> emac configuration and informing lwip if a link is available or not.
>
>         Jan
>
> On 26.08.2018 16:54, Sadegh916 wrote:
> > Hi
> > I have an STM32F439 Evaluation Board. I want to connect this board to my PC
> > via ethernet cable. I am using LWIP TCP/IP stack.
> > I can send and receive data between my PC and evaluation board. But there is
> > a problem:
> > When I reset the evaluation board For Stablishing the connection, the
> > ethernet cable must be connected to my PC Otherwise the connection will not
> > be established. How can I resolve it?
> >
> >
> >
> > --
> > Sent from: http://lwip.100.n7.nabble.com/lwip-users-f3.html
> >
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