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TM4C1294NCPDT: Ethernet port configuration for customized boards.

Balaji TS2
Intellectual 260 points
Part Number: TM4C1294NCPDT
Other Parts Discussed in Thread: UNIFLASH, EK-TM4C1294XL

Greeting for the Day,

I am working on enet_io example program Tivaware library. This application works fine on TM4C1294XL evaluation kit.

Now I want to implement same application on a customized board which has TM4C1294NCPDT microcontroller and the ethernet port is connected to same pins as in evaluation kit. But  when I connect the ethernet cable from the customized board to computer, the ethernet port is not detecting.

Do I need to add any extra lines in the program so that my issue will be resolved. If so then what should I add in enet_io program 

Kindly give me a solution for this.

Part No: TM4C1294NCPDT

Thank you.

  • 0
    TI__Guru*** 135355 points

    Hello Balaji,

    As an initial question here, do you also correctly have the 4.7kOhm resistor attached to the RBIAS pin? That is required as well as the Ethernet port connections.

    Best Regards,

    Ralph Jacobi

  • 0 in reply to Ralph Jacobi
    Intellectual 260 points

    Thank you for the quick response Ralph Jacobi,

    Yes we have attached 4.7KOhm resistor to RBIAS pin. 

    As I mentioned in the post enet_io example from Tivaware library is working fine with TM4C1294XL evaluation kit. To make that work on our customized board do we need to add any extra set of code to enet_io example. If so please tell me what to add in the code.

    Thank You.

  • +1 in reply to Balaji TS2
    TI__Guru*** 135355 points

    Hello Balaji,

    This started as a fresh device on your custom board right? If so, then there would be no MAC Address programmed into it. Have you done anything to program the MAC address? If not, that is something you will need to do in order to get an Ethernet connection working.

    You can do this with Uniflash.

    If that doesn't work, then the issue will be hardware related. There is not any other code you need to add to the project. Leave the project untouched from what works in the EK-TM4C1294XL and lets debug your custom board if the MAC address wasn't the root cause here.

    Best Regards,

    Ralph Jacobi