STM32Cube, LwIP, not work TCP?

trancercom · ‎2014-10-21

Posted on October 21, 2014 at 15:28

Hello. Please help.

I uses: STM32Cube 4.3.1 + STM32F407 (STM3240G_EVAL) + Keil

I configures: Ethernet MII + LwIP

I adds ''tcp_echoclient.?'' and ''udp_echoserver.?'' from an example (http://www.st.com/web/en/catalog/tools/PF259243♯)

UDP worked correctly.

TCP did not work (cmd: ''ping 192.168.0.10'': Interval of expectation for inquiry is exceeded)

What doing I make incorrectly?

Excuse for my English

#stm32 #lwip #tcp/ip #stm32cubemx

Oussema Hajjem_O · ‎2014-10-22

Posted on October 22, 2014 at 15:24

Hi Vladimir,

This doesn't work because you are using the same port 7(in main.h) for both TCP and UDP connections, so try to use different values

Regards.

trancercom · ‎2014-10-23

Posted on October 23, 2014 at 13:52

Thanks you LEO!

Finding a problem in other:

It were necessary to set CHECKSUM_GEN - disabled:

/*----- Default Value for CHECKSUM_GEN_IP: 1 -----*/

#define CHECKSUM_GEN_IP 0

/*----- Default Value for CHECKSUM_GEN_UDP: 1 -----*/

#define CHECKSUM_GEN_UDP 0

/*----- Default Value for CHECKSUM_GEN_TCP: 1 -----*/

#define CHECKSUM_GEN_TCP 0

/*----- Default Value for CHECKSUM_GEN_ICMP: 1 -----*/

#define CHECKSUM_GEN_ICMP 0

/*----- Default Value for CHECKSUM_CHECK_IP: 1 -----*/

#define CHECKSUM_CHECK_IP 0

/*----- Default Value for CHECKSUM_CHECK_UDP: 1 -----*/

#define CHECKSUM_CHECK_UDP 0

/*----- Default Value for CHECKSUM_CHECK_TCP: 1 -----*/

#define CHECKSUM_CHECK_TCP 0

And for link callback function (netif_set_link_callback(&gnetif, ethernetif_update_config);) to establish a low priority:

HAL_NVIC_SetPriority(EXTI15_10_IRQn, 15, 0);