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pferd
Visitor II
February 14, 2024
Solved

RNDIS over USB STM32F746-Discovery ping time out problem

  • February 14, 2024
  • 3 replies
  • 1934 views

Hello,

I have problem with ping request and RNDIS server. I use STM32F746G-Discovery and Windows 7,10,11.

My steps:

  1. I compiled the example STM32Cube_FW_F7_V1.17.1\Projects\STM32746G- Discovery\Applications\USB_Device\CDC_RNDIS_Server for FS and uploaded stm32 board.
  2. I set network in Windows for Remote NDIS:

  - Deactivate IPv6 and activate IPv4 mode

  - Static addresses as follows:

                - Address = 192.168.0.11

                - Network Mask = 255.255.255.0

                - Gateway = 192.168.0.1

  - Automatic DNS and Routing deactivated.

pferd_4-1707905565348.png

 

  1. I opened command line and created ping request „ping 192.168.0.10 –t”. It works ok.

pferd_5-1707905565360.png

 

  1. I reconnected usb in PC. Ping doesn’t work. I still have „Request timed out”:

pferd_6-1707905565365.png

 

To restore communication I need to change the network settings. I have to set IP6 active and click OK.

 

pferd_7-1707905565383.png

 

Why is communication restored after IP6 activation? I think than communication should start after connect USB to PC. Can you explain to me what is the problem ?

    This topic has been closed for replies.
    Best answer by pferd

    Hi,

    I believe the problem was the antivirus program. When I tested the device without an antivirus program it worked fine. Using Wireshark I could see that not all network packets were arriving.

    I gave up using RNDIS over USB.

    3 replies

    F
    FBL
    Technical Moderator
    March 1, 2024

    Hello @pferd 

    You are trying to run STM32746G-DISCOVERY_USBD-FS example from cube firmware without any modifications using our reference board MB1191-C03? You followed readme with no success?
    If not, please don't hesitate to share your hardware setup and the minimum software to reproduce the issue.

    P
    pferdAuthor
    Visitor II
    March 6, 2024

    Hello,

    I used the example without any modifications:

    ...\STM32Cube_FW_F7_V1.17.1\Projects\STM32746G-Discovery\Applications\USB_Device\CDC_RNDIS_Server

    I read "readme.txt" file.

    I used your reference board MB1191 B-04 2155003701.

    F
    FBL
    Technical Moderator
    March 12, 2024

    Hi @pferd 

    After several tests, I couldn't reproduce. It appears that deactivating and then reactivating IPV6 allows the target and the host to restore communication without any issues.

    P
    pferdAuthorAnswer
    Visitor II
    April 19, 2024

    Hi,

    I believe the problem was the antivirus program. When I tested the device without an antivirus program it worked fine. Using Wireshark I could see that not all network packets were arriving.

    I gave up using RNDIS over USB.

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