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hg-chen
Visitor II
July 10, 2008
Question

How to disable STR71X watchdog when in LPWFI mode?

  • July 10, 2008
  • 2 replies
  • 714 views
Posted on July 10, 2008 at 09:36

How to disable STR71X watchdog when in LPWFI mode?

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    2 replies

    H
    hg-chenAuthor
    Visitor II
    July 1, 2008
    Posted on July 01, 2008 at 04:45

    watchdog is intended to use in run mode,

    so how to disable STR71X watchdog when in LPWFI mode?

    or any suggestion of firmware arrangement?

    H
    hg_chen
    Visitor II
    July 10, 2008
    Posted on July 10, 2008 at 09:36

    using timer interrupt to refresh watchdog counter before generating a watchdog reset can solve the problem,and remains in LPWFI mode!

    but there are 2 status conflict with described in STR71X reference manual!

    according to reference manual of STR71X, in LPWFI mode,program stop execution and interrupt will cause wake up from LPWFI mode,

    but what we have seen

    1, timer interrupt works in LPWFI mode, but the MCU does not wake up from LPWFI mode!

    2, the instructions in timer interrupt do execute(Timer flags clear and refresh watchdog counter to avoid a system reset) despite the MCU still in LPWFI mode!

    can someone explain it?

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