TCP/UDP Echo Server Example

[zabel]

Posted on March 19, 2012 at 18:21

Hello,

did anybody try the TCP/UDP echo example from stm32f2x7_eth_lwip.zip? It compiles out of the box, and tcp echo works fine if tried first, but udp echo does not work for me (I am using a STM32F220G-EVAL board). When I try the echo tool which is included in the zip archive, mostly I don't get any answer, sometimes I get one answer and than nothing more.

Command and answers are:

echotool.exe 192.168.0.10 /p udp /n 5

Hostname 192.168.0.10 resolved as 192.168.0.10

Response time out

Response time out

Response time out

Response time out

Response time out

Statistics: Received=0, Corupted=0, Lost=5

When I get no replay, Wireshark shows ICMP messages ''Destination unreachable (port unreachable)'', despite the port 7 is correctly used in the example program.

TCP echo works as expected only if UDP was not tried first. When UDP was tried first, TCP echo becomes very slow (response times ~500-900 ms).

Any ideas?

Regards

  Dirk

#tcp-test-tool #udp-test-tool #me-too

[amin23]

Posted on March 22, 2012 at 07:48

Hello,

Please refer to the AN3384, I did a test it works fine, I am using STM32F2x7_ETH_LwIP_V1.1.0

[simonlee0311]

Posted on March 24, 2012 at 04:42

Hi, Dirk

Do you check your Jumper on your EVB? 

- STM322xG-EVAL jumpers setting

+===========================================================+

     +  Jumper |       MII mode configuration            |     RMII mode configuration(*)       +

+======================================================+

       +  JP5    | 2-3 provide 25MHz clock by MCO(PA8)     |  Not fitted                          +

         +         | 1-2 provide 25MHz clock by ext. Crystal |                                      +

        + -----------------------------------------------------------------------------------------+

        +  JP6    |          2-3                            |  1-2                                 +

        + -----------------------------------------------------------------------------------------+

        +  JP8    |          Open                           |  Close                               +

        + -----------------------------------------------------------------------------------------+

        +  JP22   | 1-2: RS232 is enabled                                                          +

       

 (*) User have to provide the 50 MHz clock by soldering a 50 MHz oscillator (ref SM7745HEV-50.0M or  equivalent) on the U3 footprint located under CN3 and also removing jumper on JP5. This oscillator  is not provided with the board. 

[npham]

Posted on January 08, 2014 at 20:49

Could anyone please tell me where can I download the echotool.exe? Thanks

Nhan Pham

[Amel NASRI]

Posted on January 21, 2014 at 17:11

Google echotool.exe, you will find where to download it for free.

-Mayla-

[Andrew Neil]

Posted on January 21, 2014 at 22:04

You may also find these TCP and UDP Test Tools useful:

http://www.simplecomtools.com/productcart/pc/viewContent.asp?idpage=23

[Giuseppe Cannarella]

Posted on December 02, 2014 at 09:39

Hi Diz,

I've same issue. Have you resolved it? In which way?

Maybe you can you help me...

Thanks.

[Tesla DeLorean]

Posted on December 02, 2014 at 13:11

The OP started the thread >2 years ago. Please consider fully stating YOUR problem, what you have tested, your setup etc.