AnsweredAssumed Answered

Help with changing power modes

Question asked by Rande Newberry on Mar 23, 2016
Latest reply on Mar 24, 2016 by Alice_Yang

I am using an MK02FN64VLH10_64 with KDS 3.0.0, KSDK1.3.0 and Processor Expert on a custom PCBA.

I need to switch between high speed run mode and very low power run mode (VLPR). I have PTC5 as the wake up pin

(active low), and want to invoke VLPR, then use PTC5 to return to the high speed run mode.

I've been working this all day, and just can't resolve the correct steps..

I was able to use the component pwrMan1:fsl_power_manager, and without changing the default, it shows the "High speed run mode". To check what power mode I am running in I used POWER_SYS_GetCurrentMode(); and it returned 1.

Looking at the *.API Reference Manual manual.pfd it seems to indicate "1" is the VLPR, but I think the clock is faster than 4Mhz, and the current consumption indicates HSRUN or RUN mode is being used..

Here is the enum from the manual, page 2133..


• enum power_manager_modes_t {


kPowerManagerVlpr,       ///////// a 1 would be this mode..Correct??






kPowerManagerVlls3 }


The K02P64M100SFA.pdf manual provides data for the IDD_HSRUN mode and IDD_RUN mode and VLRP mode and all the other power modes for the chip. But I do not see the enum for HSRUN in the above?? am I missing something??, 

So now I am somewhat confused, I know the code is executing a lot faster than a 4mhz bus clock, and the current consumption indicates either  HSRUN or RUN mode. I see in the examples that we can not switch between HSRUN and VLPR modes with out manipulating the clock..I tried for a few hours to follow the examples and set the clock but no success..


Any Guidance here would be greatly appreciated.

Thank you!