Unable to exit from VLPS mode to RUN with watchdog enable

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Unable to exit from VLPS mode to RUN with watchdog enable

634 次查看
KKumar
Contributor II

Hi NXP,

Following code working fine in transition from RUN to VLPS and from VLPS to RUN

KKumar_0-1683371688097.png

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After adding watchdog disable before Low mode entry and enable watchdog at exit, it is working fine from RUN to VLPS but not exit from VLPS on interrupt

KKumar_1-1683371828120.png

 

Help me to solve the issue

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574 次查看
KKumar
Contributor II

Hi @Senlent 

One more doubt i have..
I am disabling FIRC source in "stop_mode_config"  function which is the source of MCU Core.

Means, now there is no CORE CLK  then how below (below "stop_mode_config")function are getting executed  by MCU and  putting itself in stop. mode.

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Senlent
NXP TechSupport
NXP TechSupport

Hi@KKumar

the SIRC will be the source of the system clock.

27.4.4 VLPR/VLPS mode entry
When entering VLPR/VLPS mode, the system clock should be SIRC. The FIRC, SOSC,
and SPLL must be disabled by software in RUN mode before making any mode
transition.

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614 次查看
Senlent
NXP TechSupport
NXP TechSupport

Hi@KKumar

please check bit CS->UPDATE .

Senlent_0-1683516643876.png

 

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