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MK10DX Not Waking Up From LLWU Pin

Question asked by Dane Bouchie on Feb 25, 2017
Latest reply on Feb 25, 2017 by Dane Bouchie

Hello,

 

I am trying to use a LLWU pin to wake up a MK10DX chip from LLS mode. I've successfully gotten the chip to to wake up from the LPTMR0, however, I can't seem to get a LLWU Pin to wake it up. I mainly use Processor Expert and have configured the LLWU pin settings in the CPU Component and added a Init_GPIO for Port D initializing the pin as an input with a pull-up resistor. I can therefore verify the following registers are being set: (We are using LLWU Pin 15 = PTD6)

 

LLWU_PE4 = 0xFF

LLWU_ME = 0x01

LLWU_RST = 0x02

PORTD_PCR6 = 0x103

GPIOD_PDOR = 0x00

GPIOD_PSOR = 0x00

GPIOD_PCOR = 0x00

GPIOD_PTOR = 0x00

GPIOD_PDIR = 0x00

GPIOD_PDDR= 0x00

 

From here, when I toggle LLWU Pin 15 (verified on Oscilloscope), it does not wake up the chip. So I don't know why this is not triggering a wake-up. Also, like I said, LPTMR0 works just fine, so it must be something to do with with how I'm configuring Port D, but after reading over the K10 Reference Manual and some forum questions/answers, the only requirement (from what I can tell) is that the LLWU Pin must be configured as a digital input like it is now. 

 

Any ideas to get this working, or ways to debug this further would be greatly appreciated,

 

Thanks.

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