KL25z LLS Wake-Up - Reactivating PORT

[Bergma]

Hi

I am having some trouble getting the KL25z to wake up fully after LLS. By that i mean that I am unable to utilize the I/O pins, i.e. the PORT module, after wakeup.

I gather that i need to reactivate something, but I have been unable to find the documentation regarding this.

Below is the LLWU IRQ Handler

void LLWU_IRQHandler()
{

	if (LLWU->F2 & LLWU_F2_WUF14_MASK)
	{
		// Clear Wake-up flag for pin
		LLWU->F2 |= LLWU_F2_WUF14_MASK;

		// Disable sleep on exit
		SCB->SCR &= ~SCB_SCR_SLEEPONEXIT_Msk;
	}
	else
		if (LLWU->F3 & LLWU_F3_MWUF0_MASK)
		{
			// write 1 to TCF to clear the LPT timer compare flag
			LPTMR0->CSR |= LPTMR_CSR_TCF_MASK;

			PTB->PTOR |= MASK(0);
		}
	//PMC->REGSC &= ~PMC_REGSC_ACKISO_MASK;
}

I am using MCUXpresso with NXP SDK.

I'm kinda banging my head against the wall here.

Mathias

[Robin_Shen · Accepted solution]

Hi Mathias,

Please refer the frdmkl25z_demo_apps_power_mode_switch SDK example:

Best Regards,
Robin
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[Bergma]

Hi Robin.

I could have sworn that i already tried that. Nevertheless i worked!!!

Thanks alot

Mathias