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cmerck
cmerck
Associate
March 7, 2011
Question

[RESOLVED] Watchdog Timer Fails to Reset

  • March 7, 2011
  • 2 replies
  • 671 views
Posted on March 07, 2011 at 21:06

[RESOLVED] Watchdog Timer Fails to Reset

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    2 replies

    Tesla DeLorean
    Tesla DeLorean
    Guru
    May 17, 2011
    Posted on May 17, 2011 at 14:26

    Disconnect the debugger, use a serial port console to observe or gather telemetry. There is a setting, as I recall, that prevents it working when the debugger is active.

    Also other things to check on a HW level, are things clamping reset pins high for instance.

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    cmerck
    cmerckAuthor
    Associate
    May 17, 2011
    Posted on May 17, 2011 at 14:26

    Clive,

     Thanks so much for the lead.

    My problem was that an AND gate, which was being used to multiplex several hardware reset sources, was contending with the internal reset circuitry. Addition of a diode or replacement of the gate with an open-drain output AND gate resolves the issue.

    Cheers,

     Chris

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