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TMDS273GPEVM: TMDS273GPEVM Ethernet Communication between the ECU and the PC

cl xu
Prodigy 30 points

Part Number: TMDS273GPEVM

We just need to highlight that we used connection between the ECU and the PC.

Does anyone know how to configure the IP statically without using DHCP server? and if yes, could you please refer us to the exact location in the code to configure the IP statically?

The code below is error,because the first patameter in the function “LwipifEnetApp_netifOpen” and “LwipifEnetApp_getNetifFromId” is a handle.

  • 0
    TI__Genius 11566 points

    Hi cl xu,

    Sharing the steps below to assign static IP:

    The only precautions you need to take are:

    1. Not assigning the same IP address to multiple NetIFs for obvious reasons,

    2. Making sure you don't call  App_allocateIPAddress() function

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    static void App_setupNetif()
    {
    ip4_addr_t ipaddr[2], netmask[2], gw[2];
    ip4_addr_set_zero(&gw[0]);
    ip4_addr_set_zero(&ipaddr[0]);
    ip4_addr_set_zero(&netmask[0]);
    ip4_addr_set_zero(&gw[1]);
    ip4_addr_set_zero(&ipaddr[1]);
    ip4_addr_set_zero(&netmask[1]);
    gw[0].addr = ((uint32_t)0x0100A8C0UL); // 192.168.0.1
    ipaddr[0].addr = ((uint32_t)0x0a00A8C0); // 192.168.0.10
    netmask[0].addr = ((uint32_t)0x00FFFFFF);// 255.255.255.0
    gw[1].addr = ((uint32_t)0x0100A8C0UL); // 192.168.0.1
    ipaddr[1].addr = ((uint32_t)0x0300A8C0); // 192.168.0.3
    netmask[1].addr = ((uint32_t)0x00FFFFFF);// 255.255.255.0
    DebugP_log("Starting lwIP, local interface IP is dhcp-enabled\r\n");
    hlwipIfApp = LwipifEnetApp_getHandle();
    XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

    I tested the ping functionality, and it works as expected. Do let me know if you face any issues once you try it out.
    Regards,
    Shaunak
  • 0 in reply to Shaunak Deshpande
    Prodigy 30 points

    Thanks for your reply.

    However, we could not make a UDP communication between the ECU and the PC.

    I tested the ping command, and it failed.

  • 0 in reply to cl xu
    TI__Genius 11566 points

    Hi Cl Xu,

    I see incorrect IP getting assigned in the application (192.168.0.10) instead of your desired IP (192.168.60.10). Just to confirm, did you rebuild the application before testing it again? The Ping failed as the incorrect IP got assigned.

    Can you please recheck and let me know if it works, because I tested the same workaround locally and Ping worked.

    Thanks and Regards,
    Shaunak

  • 0 in reply to Shaunak Deshpande
    Prodigy 30 points

    I'm sorry.

    The value of ipaddr.addr is ((uint32_t)0x0A00A8C0), the comment is incorrect.

    Look at the second image above, local interface IP is 192.168.0.10.

  • 0 in reply to cl xu
    TI__Genius 11566 points

    Hi CL XU,

    I'll re-iterate over it once again with some other IP address just to avoid any confusion,
    Let's take it as follows:

    IP address: 192.168.1.3      (0x0301A8C0)
    Gateway:    192.168.1.1      (0x0101A8C0)
    Netmask:    255.255.255.0  (0x00FFFFFF)

    After making these changes, please rebuild your application and now load the newly built binary, the IP assigned in the application should now be 192.168.1.3. Test it by running the Ping command from a PC with IP 192.168.1.xx

    Regards,
    Shaunak

  • 0 in reply to Shaunak Deshpande
    Prodigy 30 points

    The UDP Client Example could not  communication successfully, in the "examples/networking/lwip/enet_cpsw_udpclient" folder.

    The TCP Client Example is OK, in the "examples/networking/lwip/enet_cpsw_tcpclient" folder.

    Please test the “UDP Client Example”, and let me know if it works.

    -------------------------------------------------------------------------------

    -------------------------------------------------------------------------------

    There are two questions,as follows:

    (1)、In the TCP Client Example, the "DebugP_log("xxxx")" could not be shown in the concose window.

    (2)、The sources in the example project could not be imported locally, while import  the "TCP Client Example".The  icons is shown as the image.

    Please let me know how to solve the issues

  • +1 in reply to cl xu
    TI__Genius 11566 points

    Hi CL XU,

    I tested both the TCP Client and the UDP Client applications with static IP assignment (following the same steps and IP address I shared in my last response) Attaching the console outputs of both the applications as a reference:

    TCP Client:

     

    tcp_client_Static_IP_output.txt
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    ==========================
    CPSW LWIP TCP CLIENT
    ==========================
    EnetPhy_bindDriver:1717
    PHY 0 is alive
    Starting lwIP, local interface IP is dhcp-enabled
    [LWIPIF_LWIP] LwIP Checksum offload support disabled
    [LWIPIF_LWIP] NETIF INIT SUCCESS
    Host MAC address-0 : 70:ff:76:1d:ec:f2
    Enet IF UP Event. Local interface IP:192.168.1.3
    [LWIPIF_LWIP] Enet has been started successfully
    Waiting for network UP ...
    Waiting for network UP ...
    Cpsw_handleLinkUp:1323
    MAC Port 1: link up
    Network Link UP Event
    Network is UP ...
    TCP Client Menu:
    Enter TCP server IPv4 address:(example: 192.168.101.100)
    XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

    UDP Client: 

    udp_client_static_IP_output.txt
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    ==========================
    CPSW LWIP SIMPLE SOCKET
    ==========================
    EnetPhy_bindDriver:1717
    PHY 0 is alive
    Starting lwIP, local interface IP is dhcp-enabled
    [LWIPIF_LWIP] LwIP Checksum offload support disabled
    [LWIPIF_LWIP] NETIF INIT SUCCESS
    Host MAC address-0 : 70:ff:76:1d:ec:f2
    Enet IF UP Event. Local interface IP:192.168.1.3
    [LWIPIF_LWIP] Enet has been started successfully
    Waiting for network UP ...
    Waiting for network UP ...
    Cpsw_handleLinkUp:1323
    MAC Port 1: link up
    Network Link UP Event
    Network is UP ...
    UDP socket Menu:
    Enter server IPv4 address:(example: 192.168.101.100)
    XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

    To run the server, use the command in your linux terminal, enter the IP of the Server when the applcation prompts

    TCP Server: ncat -e /bin/cat -kv -l 8888
    UDP Server: ncat -e /bin/cat -ukv -l 8888

    The default Out of the Box application is configured to transfer certain number of packets and close the connection.

    Note:

    The socket connection will remain open only for a short duration during which some TCP (or UDP) packets will be transferred. If you try to Ping the EVM in this duration, it works, Once the transfer of Packets is complete, the Socket Connection will be closed, and the Ping command would be unresponsive (Destination Host Unreachable).

    In case you want to keep the connection open, you will have to comment the following lines of code so the connection stays alive.

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    ret = lwip_close(sock);
    XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

    1). The DebugP_logs were visible in both the examples when the correct COM port was selected in my case. In your case, do you observe none of the logs or some specific logs?

    2) Can you please provide some further elaboration for the same, did you add some more files in the example which are not visible when you import the project?

    Regards,
    Shaunak

  • 0 in reply to Shaunak Deshpande
    Prodigy 30 points

    Thanks for your reply.

    We could make a communication between the ECU and the PC

    Does anyone know how to configure the PORT？？

  • 0 in reply to cl xu
    TI__Genius 11566 points

    Hi CL XU,

    If the IP assignment issue has been resolved please close the thread and open a new one for port configuration, the respective expert will be assigned accordingly.

    Regards,

    Shaunak