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Getting FMC - correctable error: bus1 and bus2 interfaces

Ringolds Jargans
Prodigy 230 points

Hi.

I am getting the FMC - correctable error: bus1 and bus2 interfaces error on TMS570LS0332x MCU. The error occurs at random point after power restart of the MCU. The interval is not consistent (sometimes 2s sometimes up to a minute after restart). It does not seem to impact the operation of the running in any way as far as i have determined, however I do not want to take any chances with it.

Wold you be able to suggest some steps how to determine where the problem might be and a bit more about the nature of the error? And suggest the source of the problem?

  • 0
    TI__Mastermind 49120 points
    H Ringold,

    Sorry for the delay in answering. You can start the debug by looking into the flash module registers. The FCOR_ERR_ADD register holds the address that caused the single-bit error (correctable). Are you allowing the CPU to correct these single-bit errors or are you causing an abort even on single-bit errors? The flash module also has a counter for these occurrences so that you can program a threshold for how many single-bit errors are allowed before an interrupt is generated to the CPU.

    Regards,
    Sunil
  • 0 in reply to Sunil Oak
    Prodigy 230 points
    Sorry for the late reply, I was out of the office. Thanks for the tip. I will check it out. :)

    BR.