topic Re: K82 - how to use RTC to wake up from VLLSx in Kinetis Microcontrollers

K82 - how to use RTC to wake up from VLLSx

niranjan_rao — Tue, 21 Mar 2017 17:21:28 GMT

Hello,

I am working with K82 (SDK-2.1).

I am able to switch between different power-modes and use external pin a to wake up from VLLS0.

I am looking for an example how to wake-up from VLLSx mode using the RTC alarm.

I wan not able to find one, can someone help me with this please?

cheers

Rao

Re: K82 - how to use RTC to wake up from VLLSx

Hui_Ma — Wed, 22 Mar 2017 04:09:25 GMT

Using RTC module is quite similar with using LPTMR module to wake up the core from low power mode.

There with the demo (power_manager or power_mode_switch of KSDK software) to using LPTMR to wake up the core from VLLSx low power mode.

Please check attached K60 RTC wake up the core from LLS low power mode bare-metal project software for your reference.

Wish it helps.

Have a great day,
Ma Hui
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Re: K82 - how to use RTC to wake up from VLLSx

niranjan_rao — Wed, 22 Mar 2017 11:59:55 GMT

Hello Ma Hui,
Thank you for the example project, it helped me understand how to initialize the LLWU (RTC)