How to use WDFLAG bit on DM6446's WDT

rs3301

Hello,

DM644x have an Watchdog timer,

How do I know this device reset cause of WDT timeout?

Because when device reset occur(cause WDT timeout), WDFLAG bit is also cleared after device reset.

How to use WDFLAG bit?

Thank you for advance.

0 Paul.Yin over 15 years ago

Unfortunately, there is no good way to use WDFLAG. Our designer said it is a matter of nanaseconds between WDFLAG set and device reset.

What I'd suggest you to do is poll the count register periodically. When it reaches certain value, do what you would do as if you've seen WDFLAG set.

0 rs3301 over 15 years ago in reply to Paul.Yin

Thank you for your reply.

I understood that.

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