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Carrier sense errors and ping

Taras Kolesko
Expert 1730 points

Hello again.

I'm still in trouble with my TMDSEVM6670. I'm using standart helloWorld_evmc6670 from mcsdk_2_01_02_06/ndk , i can load it, but there are some issues. When i'm trying to ping my board, i can see that value in the TXCARRIERSENSEERRORS register (0x02090b60h) increases. Board doesn't respond, like packets are not reaching receive buffer. What could this be?

  • 0
    TI__Guru* 81335 points
    Hi Taras Kolesko,

    Are you trying to ping with SGMII_0 or SGMII_1? Please confirm. Thank you.
  • 0
    TI__Guru** 116100 points

    Are you using the pre-built image ?
    Have you modified the code ?
    If yes, board might have some problem, do you have anyother C6670 EVM board to try ?
    Sorry for that still you are having issue on your board.

    You can also attach your .out and let me try now on my C6670 EVM board and update you before EOD.

  • 0 in reply to Raja
    Expert 1730 points

    Hello Raja.

    I'm using SGMII_0, by attaching PHY to AMC. I watch 0x02090B00 (RX good frames count) while pinging, and i see that its value increases and 0x02090B60 (carrier sense errors STATSA/STATSC) remains  = 0. But, when i watch 0x02090B60 (carrier sense errors STATSB/STATSC) its value increases on the same amount,  which 0x0209B00 value increases. Maybe this is an issue, because of which board doesn't respond on ping?

    Hello Titus.

    No, i'm not using pre-built image.
    No, i've not changed code, since my last attaching post, maybe i need to modify it, so i will be able to work with SGMII_0?
    Sadly, i don't have another evaluation board to test an issue on it.

  • 0 in reply to Taras Kolesko
    TI__Guru* 95265 points
    Taras,

    C6670 is Keystone I device, it only has STATSA (for port 0, address 0x2090b60) and STATSB (for port 1 and 2, address 0x2090c00).

    Are you using TI C6670 EVM or your customized board? Can you run the pre-build NDK helloworld example to prove the HW worked OK? Why you need to change code?

    Regards, Eric