MC9S12 COP Watchdog Reset

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MC9S12 COP Watchdog Reset

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yuands
Contributor I

I have a project using the MC9S12XEP100, and would like to use the COP Watchdog Reset.

When the watchdog is triggered, the system can be reset normally. However, some communications may be lost after the system is reset. For example, after the system is restarted, SCI receiving fails, but SCI sending works normally. May I ask if this phenomenon have a problem with the corresponding interruption after restart? Is there any way to prevent this from happening?

At the same time, i want to run the program for a long time,but the program will automatically reset the watchdog after running for a period of time, can this problem be solved?

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lama
NXP TechSupport
NXP TechSupport

Hi,

1)

https://community.nxp.com/t5/S12-MagniV-Microcontrollers/S12-FAMILY-DEVICES-COP-RECOGNITION-CONSIDER...

 

2) I believe there is the answer in the attached example. I suggest to read all notes in the main.c module carefully.

 

3) For more examples…

https://community.nxp.com/t5/S12-MagniV-Microcontrollers/LAMA-s-S12XE-unofficial-examples/ta-p/11007...

 

Best regards,

Ladislav

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