Chris Seto wrote:
>I have a custom board with an STM32F4, and a TLK110 running LwIP 2.0.3.
>The
>board works great when it gets, an address, and I can freely exchange
>data
>with a socket server.
>
>On board bootup, I set the IP to 0 and then use dhcp_start() to start
>DHCP.
>When the code sees that the IP is no longer just 0, it tries to connect
>to
>the socket server.
>
>Most of the time this works well.

This looks like a threading issue. The examples from STM are horribly wrong in 
that respect. Read the docs at http://www.nongnu.org/lwip/ to learn about 
threading. Also, try upgrading to fit master and use the new 
LWIP_ASSERT_CORE_LOCKED() check (has to be implemented for your arch, look at 
our Freertos port for an example).

Simon

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