Enter LLS mode in MK60FN1M0VLQ12

[rajkumar_yerraj]

Hi, 

I am working on LLS mode for MK60FN1M0VLQ12 controller. 

I configured LLS mode using the example from KINETIS_120_SC TSI_Low_Power but the controller is entering directly to stop mode but not LLS as LPTimer, RTC should work in LLS.

enable_lpwui();
delay(800000);
pee_pbe(CLK0_FREQ_HZ);
pbe_fbe(CLK0_FREQ_HZ);
fbe_fbi(32000,0);
fbi_blpi(32000,0);
enter_lls();

I have attached the file TSI_demo_lowpower.c but I am not using TSI. I want to use LPTimer as Wake up interrupt source. but the issue is when it enters enter_lls(); the LPTimer and RTC have stopped working. 

Hope you can help me in finding the issue in configuring LLS mode for MK60FN1M0VLQ12.

I have attached my previous thread also.

https://community.nxp.com/thread/508530

Thank you.

-Rajkumar

[kerryzhou]

Hi Gangadhar rao,

   How do you find the chip is enter the stop mode, and not the LLS mode?

   Just find the chip can't wake up with LPTMR and RTC, it it right?

   When you use the LPTMR as the wakeup source, do you configure LPTMR modue in the LLUW?

  From your code, I find your LLUW configuration still the TSI, not the LPTMR or RTC, please check this wakupsources for LLWU inputs:

 

When you use the LPTMR, you must make sure it's clock source can work under LLS mode, you can us ethe 1Khz LPO, it works in LLS mode.

Please configure the LPTMR module, LLUW modue, and enter the LLS mode again.

If you still have question about, please kindly let me know.

Have a great day,
Kerry

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[rajkumar_yerraj]

Thank you very much.

I found the issue.

[kerryzhou]

Hi Gangadhar rao,

  You are welcome.

  I am glad to hear you find the problem.

  Do you solve it?

  If you have the further question about it, please let me know.

   If your question is solved, please help me to mark the correct answer, just to close this case, thank you!

Have a great day,
Kerry

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[rajkumar_yerraj]

Thank you Kerry. I could solve the issue.

Thanks a lot for the info.

-Rajkumar

[kerryzhou · Accepted solution]

OK, please help to mark the correct answer in this post, just to close this case, thank you!

Have a great day,
Kerry

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