Wdog timeout reset problem after usb resume from suspend

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Wdog timeout reset problem after usb resume from suspend

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eric_yp_chen
Contributor I

Hey @jeremyzhou 

I've design a product which both need watch dog and usb selective suspend function.

Wdog timeout always triggered after resume  state.

I did add these setting during wdog init.

wdog_config.enablePowerDown = true;
wdog_config.workMode.enableStop = true;
wdog_config.workMode.enableWait = true;

 

Have you ever met this before ?

Any other register should I set before enter suspend ?

Or how to disable WDOG properly before enter suspend ?

Eric

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3 Replies

698 Views
eric_yp_chen
Contributor I

Hi @jeremyzhou 

Yes, you're right. I want to disable it.

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694 Views
jeremyzhou
NXP Employee
NXP Employee

Hi,
Thanks for your reply and clarification.
After confirming, once the WDOG is activated, it must be serviced by the software on a periodic basis, it won't be able to be disabled prior to trigger reset event.
Have a great day,
TIC

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702 Views
jeremyzhou
NXP Employee
NXP Employee

Hi,
Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.
Actually, I'm a bit confused with your question, it seems that you want to forbid or disable Wdog trigger a reset event after the USB has resumed from suspend function, isn't my understand right? I hope you can explain it.

Have a great day,
TIC

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