SIM_RSTSTS is 0x0000

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SIM_RSTSTS is 0x0000

954 次查看
Mike_d
Contributor IV

Hi,

I'm trying to track down a reset issue on a 56F8345. At first the SIM_RSTSTS register would show a COP reset but I can never hit a breakpoint in the COP isr.  After disabling the COP it continues to reset and now the SIM_RSTSTS is 0x0000 after a reset.  What could cause this kind of behavior?

Regards,

-Mike

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698 次查看
marco76
Contributor I

We have a similar problem. Often our application based on 56F8345 resets and we find in the registry SIM_RSTSTS 0x0000.
I wanted to ask you if you're using the CANbus module? Because I have doubts that it may be the cause.
I also wanted to ask you if you have the watch dog enabled?

Regards

Marco

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xiangjun_rong
NXP TechSupport
NXP TechSupport

Hi, Mike,

The COP module can not generate interrupt, it can only generate COP Reset.  you can not hit break point even if you set break point at the P:0x0002, it is debugger problem, that  is way you can not hit interrupt if you setting break point at P:0x0002. You can not hit interrupt if you set break point at interrupt vector table.

If the SIM_RSTSTS is 0x0000 , it means that Reset event does not happen.

Hope it can help you

BR

Xiangjun rong