How to disable STR71X watchdog when in LPWFI mode?
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   How to disable STR71X watchdog when in LPWFI mode?
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Kuni   Posted 01-07-2008 at 08:15   



Registered on :
10-30-2003

From Taiwan

Messages : 139

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watchdog is intended to use in run mode,
so how to disable STR71X watchdog when in LPWFI mode?
or any suggestion of firmware arrangement?



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hg_chen   Posted 10-07-2008 at 13:06   



Registered on :
05-30-2008

Messages : 7

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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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