First of all, it always helps to know which version you are using (so
I know which files I have to search in).
Then, since you are using an OS, are you calling the below functions
from tcpip_thread or from another thread (or interrupt context)? You may
only call them from tcpip_thread since they are accessing raw api functions!
Benjamin Schelte wrote:
[..]
So the problem occurs after calling the function *iEthCtrl_UseDHCP().*
After doing so it sometimes happens to stop executing on an assert in
dhcp_create_request().
Assert:
LWIP_ASSERT("dhcp_create_request: dhcp->p_out == NULL", dhcp->p_out ==
NULL);
Callstack:
dhcp_create_request
dhcp_select
dhcp_handle_offer
dhcp_recv
udp_input
ip_input
ethernet_input
tcpip_thread
So my questions are the following.
Why is a DHCP-request forwarded to the DHCP-handler, although
dhcp_stop() has been called before?
Ehrm, above you said it happened after calling xxx_UseDHCP(), which
calls dhcp_start(), so I guess it's correct that the DHCP handler is
called, isn't it?
As to the assert, from looking at the code (of lwIP version 1.3.2), I
can't tell what's going wrong, the assert shouldn't happen with the
callstack you provided... Aside from that, your code seems to look OK,
but I didn't have the time to actually check it.
Simon
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