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external clock configuration of S32K148 internal RTC

Question asked by Ambarish Hundekar on Apr 3, 2019
Latest reply on Apr 10, 2019 by Ambarish Hundekar

Hi,

 

I have configured RTC with external clock .

 

I 've used a crystal oscillator of 32.768KHZ which connected to RTC_CLKIN Pin.

 

My Configuration as below.

 

1.

2.

3.

 

4.In addition, I have configured the PA7's mux mode to PORT_MUX_ALT4 for Enabling RTC CLK_IN.

{
        .base          = PORTA,
        .pinPortIdx    = 7u,
        .pullConfig    = PORT_INTERNAL_PULL_NOT_ENABLED,
        .passiveFilter = false,
        .driveSelect   = PORT_LOW_DRIVE_STRENGTH,
        .mux           = PORT_MUX_ALT4,
        .pinLock       = false,
        .intConfig     = PORT_DMA_INT_DISABLED,
        .clearIntFlag  = false,
        .gpioBase      = PTA,
        .direction     = GPIO_INPUT_DIRECTION,
        .digitalFilter = false,
    },

 

used the startcounter function and after some time , read the RTC time but read the RTC set value only.

 

RTC is not working after initialization.

 

please help me to resolve this.

 

Regards,

Ambarish

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