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2 udp server with stm32f429 broblem

mmazraeh19
Associate
Posted on March 07, 2015 at 02:57

hi

i used two stm32f429 eval board's as udp server that connected to one pc client and use STM32Cube_FW_F4_V1.3.0(LwIP_UDP_Echo_Server) code

pc(as client)<------>(ethernet hub switch)|<----->server-1(stm32f429 as udp server)

                                                                  |<----->server-2(stm32f429 as udp server)

i set pc ip as 192.168.0.11

server-1(stm32f429) ip = 192.168.0.2

server-2(stm32f429) ip = 192.168.0.3

and Gateway Address for 2 severs

#define GW_ADDR0   192

#define GW_ADDR1   168

#define GW_ADDR2   0

#define GW_ADDR3   1

when i connect all them to a ethernet hub switch .server-1 & server-2 not work correct but when i connect them to router with gateway address (192.168.0.1 ).two servers work Properly

pc(as client)<------>( router ''192.168.0.1'')|<----->server-1(stm32f429 as udp server)

                                                                    |<----->server-2(stm32f429 as udp server)

do need ethernet communication between 2 STMf429 devices to router modem?

why lwip don't work with hub 

switch.set 

Gateway Address for servers in lwip code mean them need to connect 

router with ip =192.168.0.1 ??????

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