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Original question:

AM2634: bootstrap resistor value in DP83822

AM2634: Ethernet DP83822 facing Time out issue

AK
Intellectual 335 points

Part Number: AM2634

Tool/software:

Hi teams,

I am looping back that the thread which I asked previously,

AM2634: bootstrap resistor value in DP83822 - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums

As in the last replay u asked me to check in Linux system because of the packet Dropping so now i checked with linux os

 

but i can see some icmp_seq packet is missing in linux system. so can you say what step i can take for this?

  • 0
    TI__Mastermind 19222 points

    Hi AK,

    I do not observe this locally, can you please help with the following test:

    1. Run the application on the AM2634. Once IP is up, from your Linux device Ping the IP of AM2634.

    2. After some time (lets say 100 ICMP requests later), stop the ping test in ubuntu terminal

    3. Halt the AM2634 R5F core, and from the expression window, check the LwIP stats (follow the same steps you did in the linked E2E).

    4. Now we shall compare the ICMP xmit and ICMP recv numbers in LwIP stats with those seen in the ubuntu terminal. Ideally, lets say 100 ICMP requests are transmitted from Ubuntu terminal, the LwIP stats should also show 100 ICMP Recv and 100 icmp xmit.

    If LwIP xmit is less than LwIP Recv, it means LwIP dropped the packets. If both counts match, the issue is not with LwIP.

    Then further, we can check the CPSW stats, there we shall check if there are any packet drops due to ALE or PortMask or CRC error or FIFO overrun.

    Since I don't have an AM2634 with DP83822 PHY customized, i'll need your assistance to test it.

    Regards,
    Shaunak