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K28, FTM driving PWM and sleep modes

Question asked by Steve Iribarne on Jun 26, 2018
Latest reply on Jul 5, 2018 by Gerardo Rodríguez

Hello NXP forum.

 

I'm wondering if I can do this as the documentation may say I can, but I can't find it.

 

I have two FTM's that I would like to start a PWM signal on.  Two different channels and frequencies.

While these PWM signals are working, I'd like to be in the VLPW state that just waits for one of the interrupts that will trigger when it is time to change the PWM frequencies.  That way, before I sleep, I can turn off anything I need to turn off and only have on the GPIO Ports I need.

 

Then when the GPIO's IRQ comes in, I want to handle some short business and then go back to sleep.

 

I thought I read about the ability to do this with DMA, can I also do it without DMA?

 

Thank You in Advance!

 

-stv

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