topic Re: KL46 not waking up from VLLS3 mode using rtc alarm in Kinetis Microcontrollers

KL46 not waking up from VLLS3 mode using rtc alarm

shabana — Tue, 28 Oct 2014 05:22:14 GMT

Hi,

I'm trying to wake up the KL46 processor from vlls3 mode using RTC alarm. But it is not waking. Even RTC seconds interrupt is not able to wake up the processor from VLLS3 mode only pin interrupt is working.

Can anyone help me.

Best Regards,

Shabana

Re: KL46 not waking up from VLLS3 mode using rtc alarm

Rick_Li — Wed, 29 Oct 2014 09:11:07 GMT

I would suggest refer AN4857 which is available at;

http://cache.freescale.com/files/rf_if/doc/app_note/AN4857.pdf

hope it helps!

Re: KL46 not waking up from VLLS3 mode using rtc alarm

jeremyzhou — Fri, 31 Oct 2014 01:55:41 GMT

Hi Shabana,

I was wondering if you can upload your demo to the community, then I can run the demo with FRDM-KL46Z board.

I'm looking forward to your reply.
Have a great day,
Ping

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

Re: KL46 not waking up from VLLS3 mode using rtc alarm

yasuhikokoumoto — Sun, 02 Nov 2014 12:36:13 GMT

Hi Shabana-san,

I guess the RTC was not clocked in the power mode. By default, RTC is clocked by OSC32KCLK which would be stopped in the power mode. I think you had better change the setting of SIM_SOPT1[OSC32KSEL] from OSC32KCLK to LPO.

Best regards,

Yasuhiko Koumoto.