Hi,
I presume you aren't anymore searching for an answer, but others like me might do. Here it is:
When you do activate the DHCP option on the CubeIDE software, it indeed changes the code to use DHCP... and... disable it !
How clever are those who have made such a tool... Amazing ! :-))
You have to manually insert
#define USE_DHCP
in the main.h file in order that the DHCP is used. If you do that, it works (at least it did for me).
By the way, if you use a static address instead of DHCP and you enter the IP address, mask and gateway in the IDE/cube interface... it doesn't work as well (how surprising !) and you have to set it manually in the code:
in the file LWIP/App/lwip.c, replace
uint8_t IP_ADDRESS[4];
uint8_t NETMASK_ADDRESS[4];
uint8_t GATEWAY_ADDRESS[4];
by
uint8_t IP_ADDRESS[4]={192,168,1,201};
uint8_t NETMASK_ADDRESS[4]={255,255,255,0};
uint8_t GATEWAY_ADDRESS[4]={192,168,1,1};
there as well... it works (you have to redo it everytime you open the cube editor as it regenerate the code... without the IP :-)) )
I honnestly can't understand why they can't/don't fix those problems (because I guess almost everybody runs into them) or at least document the workarounds or if this is a feature, explain why it needs to be like that.
This is a bit sickening to loose a few days of your life looking for a solution to those trivial problems and likely turns many people away from developing products with STM.
