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Have a question about Micrium's embedded software? Ask our Expert, Matt Gordon

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Matt Gordon

Matt Gordon is a senior applications engineer at Micrium.  He began his career developing device drivers, kernel ports, and example applications for Micrium's customers.  Drawing on this experience, Matt has written multiple articles on embedded software.  He also heads Micrium's training program and regularly teaches classes on real-time kernels and other embedded software components.  Matt holds a bachelor's degree in computer engineering from Georgia Tech, Georgia in the USA.


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  • Hi matt,

     

    I have been trying to port Micrium TCP/IP stack (version 2.13.01) to STM32 platfrom.

    I am finding it difficult to configure/enable ARP feature in uC-TCP/IP

    -> When Applicaiton tries to send a IP Packet, I don't see uC-TCP/IP Stack sending ARP-request at lower-layer driver, to get MAC Address of destination

     

    Can you please guide me, how to trigger Micrium TCP/IP Stack to send ARP-requests and handle incoming ARP Requests with ARP responses ?

     

    Thanks in advance.

     

    -Regards,

    Ram.

  • in reply to e14 Contributor

    Ram,

     

    The stack's ARP response should be automatic.  Anytime the stack needs an IP address for which it has no MAC address, it will send a request, and anytime that it receives a request for its own MAC address, it will provide a response.  Are you using one of the STM32 example projects from either the Micrium or element14 site?

     

    Regards,

     

    Matt

Reply Children
  • in reply to e14 Contributor

    Thanks for your reply Matt,

     

     

    To get IP Packets we register a callback function(struct  net_if_api: Tx ) with TCP/IP Stack during initialization. In the same way , do we need to register any callback function 

    to get the ARP Packets or the same callback(currently receiving IP Packets) will be used by TCP/IP Stack to send the ARP Packets.

    I am not receiving any ARP Packets in the callback function (mentioned above) now.

    Is there any standard Micrium API which will be used by the TCP/IP Stack to send the ARP Packets.

     

    Thanks,

    Ram.