Re: [lwip-users] DHCP fails ?

[address@hidden]

Noam Weissman wrote:
> I have a simple link task that checks the PHY for link, reads it. If 
> link is up it starts the DHCP task and wait for address.
>
> If link is down the DHCP task is put into an idle state and waits for 
> link to come back…
>
> [..]
>
> When board is reset, link is established and at the DHCP task this 
> code returns with NULL ?
>
>      dhcp = (struct dhcp 
> *)netif_get_client_data(pDHCP_TaskParams->netif, 
> LWIP_NETIF_CLIENT_DATA_INDEX_DHCP);

Honestly, from how you write it, that sounds like a threading issue. You 
must not use that function (as many
others) from any other context than tcpip_thread!

> Just to point out that this setup works for several years on several 
> devices and never had any problems

The fact that it works on 1.4.1 (what's 1.41?) does *NOT* mean anything. 
The code could be wrong and just work by chance...

Maybe I haven't understood your setup correctly. In that case, please 
try to describe it better :-)

Simon