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OMAPL138 EMAC does not suspend at breaking

mshino
Prodigy 70 points
Other Parts Discussed in Thread: OMAPL138, OMAP-L138

Hi,

I am making EMAC driver for the OMAPL138 on the original board.
The first on logic evaluation board, Zoom OMAP-L138 eXperimenter Kit, EMAC has not received packet in breaking by debugger.
however at the orignail board, EMAC receives a packet even though it is being break.

both of boards is using same EMAC driver, then I was confirmed that both the EMCONTROL register has been set "Emulation suspend".
Why I do not know whether EMAC receives a packet in the break in the original board.

Regards,
shino.

  • 0
    TI__Guru** 116100 points
    Dear Shino,
    Can you please elaborate on your problem ?

    Flash this code and check the operation.

    Are you using the same PHY for your custom board as LogicPD using ?

    What do you mean by "breaking debugger" ?
    Halting the emulator process on CCS

    What is the value stored in EMCONTROL register ?
    Which bit is set FREE or SOFT ?
  • 0 in reply to Titusrathinaraj Stalin
    Prodigy 70 points
    Dear Titus S.

    Thank you reply.

    >Can you please elaborate on your problem ?

    My problem is that RXERRCODE of MACSTATUS register becomes 2(Ownership bit not set in SOP buffer).
    I think that receive buffer are depleted, because even if CPU is suspended, EMAC forwards the received frame.


    > Are you using the same PHY for your custom board as LogicPD using ?

    No, custom board has Micrel switch as PHY.


    > What do you mean by "breaking debugger" ?

    it means in the break state by presses suspend button in CCS debug.


    >What is the value stored in EMCONTROL register ?
    >Which bit is set FREE or SOFT ?

    EMCONTROL register is set SOFT bit only.

    I wonder if PHY is not accept packet in LogicPD ?

    Best regars,
    Shino.