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LWIP ETHERNET PROBLEM

mmazraeh19
Associate
Posted on March 11, 2015 at 13:43

hi

i used lwip example in stm32cubef4 like to(udp echo server,tcp echo server,......).when i connect 2 stm32f407 eval boards as udp or tcp servers to ethernet hub switch and connect to pc as client my servers don't work correct.

pc(client)<----------><ethernet switch----->}{<--stm32f407 board as udp server1-->

                                                                    }{<--stm32f407 board as udp server2-->  

but the system work good when i disconnect one stm32f407 board from switch

 

pc(client)<----------><ethernet switch----->}{<--stm32f407 board as udp server1-->

why lwip lib don'twork with 2 servers in ethernet chain?

                          

1 REPLY 1
AvaTar
Lead
Posted on March 11, 2015 at 15:28

why lwip lib don'twork with 2 servers in ethernet chain?

 

Perhaps because both stm32xx servers have the same MAC address compiled-in ?