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PROCESSOR-SDK-J784S4: Configuration difference between ENET helloworld and loopback examples

Romain Guilloteau
Prodigy 110 points
Part Number: PROCESSOR-SDK-J784S4


Tool/software:

Hello,

I am currently developing an application based on the ENET driver and need to implement a loopback on SerDes 2 on the parallel lines side.

To better understand the driver's functionality, I have run both the "helloworld" and "loopback" examples on the MCU2_0 core. Initially, I tested MAC loopback mode with both examples. However, I am confused about why the SerDes needs to be configured for the "helloworld" example but not for the "loopback" example, even though both are set to MAC loopback mode.

Thank you in advance for your assistance.

Best regards,
Romain

  • 0
    TI__Genius 16420 points

    Your question has been initially assigned to Doredla

  • +1 in reply to Chris Tsongas
    TI__Guru 69940 points

    Hi,

    Romain Guilloteau said:
    To better understand the driver's functionality, I have run both the "helloworld" and "loopback" examples on the MCU2_0 core. Initially, I tested MAC loopback mode with both examples. However, I am confused about why the SerDes needs to be configured for the "helloworld" example but not for the "loopback" example, even though both are set to MAC loopback mode.

    Yes for MAC loopback test SerDes configuration is not required.
    Even loopback example configures SerDes for Serial interfaces using "EnetBoard_setupPorts".
    In case of PHY loopback test we need SerDes to be configured for transfer of data to PHY from MAC.

    Hello world example is reference to customer so, configured all required components.

    Best Regards,
    Sudheer