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How make FRDMKL25Z RTC works

Question asked by Sergio Saucedo on Mar 9, 2018
Latest reply on Jun 19, 2018 by Alice_Yang

I'm trying to use the RTC on the FRDMKL25Z, but it doesn´t work propertly, the only way can the RTC works is whit the 1kHz LPO clock, but the second regiter changes every 32.768 seconds whit this lines of code:

 

/* Enable the RTC 32KHz oscillator */
SIM->SOPT1 &= ~SIM_SOPT1_OSC32KSEL_MASK;
SIM->SOPT1 |= SIM_SOPT1_OSC32KSEL(2); // 1kHz LPO

 

I need the second regiter changes every second but I can't make it, does any one help me?

 

I'm using:

MCUXpresso IDE v10.1.1

KL25Z-SDK v2.2 

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