|Subject:||Re: [lwip-users] Trying to work out DHCP issue|
|Date:||Tue, 27 Feb 2018 11:41:51 -0600|
Chris Seto wrote:
>I have a custom board with an STM32F4, and a TLK110 running LwIP 2.0.3.
>board works great when it gets, an address, and I can freely exchange
>with a socket server.
>On board bootup, I set the IP to 0 and then use dhcp_start() to start
>When the code sees that the IP is no longer just 0, it tries to connect
>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).
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