CCS/MSP432P401R: RTC ticking incorrectly

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/*******************************************************************************
 * MSP432 RTC_C - Calendar Mode
 *
 * Description: This program demonstrates the RTC mode by triggering an
 * interrupt every minute. The date is set at the start of execution and an
 * additional alarm for a specific time is also set to demonstrate the various
 * modes of alarms/events for the RTC_C module.
 *
 *                MSP432P401
 *             ------------------
 *         /|\|                  |
 *          | |                  |
 *          --|RST         P1.0  |---> P1.0 LED
 *            |     PJ.0 LFXIN   |---------
 *            |                  |         |
 *            |                  |     < 32khz xTal >
 *            |                  |         |
 *            |     PJ.1 LFXOUT  |---------
 *
 ******************************************************************************/
/* DriverLib Includes */
#include <ti/devices/msp432p4xx/driverlib/driverlib.h>

/* Statics */
 static volatile RTC_C_Calendar newTime;

 //![Simple RTC Config]
 /* Time is November 12th 1955 10:03:00 PM */
 const RTC_C_Calendar currentTime =
 {
         0x00,  // seconds
         0x03,  // minutes
         0x22,  // hours
         0x00,  // day of week
         0x12,  // day of month
         0x11,  // month
         0x1955 // year
 };
 //![Simple RTC Config]

 RTC_C_Calendar pastTime[120];
 uint8_t ii;

int main(void)
{
    /* Halting WDT  */
    MAP_WDT_A_holdTimer();

    /*
     * Revision C silicon supports wait states of 1 at 48Mhz
     */
    MAP_PCM_setCoreVoltageLevel(PCM_VCORE1);
    MAP_FlashCtl_setWaitState(FLASH_BANK0, 1);
    MAP_FlashCtl_setWaitState(FLASH_BANK1, 1);

    /* Configuring pins for peripheral/crystal usage and LED for output */
    MAP_GPIO_setAsPeripheralModuleFunctionOutputPin(GPIO_PORT_PJ,
            GPIO_PIN0 | GPIO_PIN1, GPIO_PRIMARY_MODULE_FUNCTION);

    MAP_GPIO_setOutputLowOnPin(GPIO_PORT_P1, GPIO_PIN0);
    MAP_GPIO_setOutputLowOnPin(GPIO_PORT_P2, GPIO_PIN0);
    MAP_GPIO_setOutputLowOnPin(GPIO_PORT_P2, GPIO_PIN1);

    MAP_GPIO_setAsOutputPin(GPIO_PORT_P1, GPIO_PIN0);
    MAP_GPIO_setAsOutputPin(GPIO_PORT_P2, GPIO_PIN0);
    MAP_GPIO_setAsOutputPin(GPIO_PORT_P2, GPIO_PIN1);

    /* Setting the external clock frequency. This API is optional, but will
     * come in handy if the user ever wants to use the getMCLK/getACLK/etc
     * functions
     */
    CS_setExternalClockSourceFrequency(32000,48000000);

    /* Starting LFXT in non-bypass mode without a timeout. */
    CS_startLFXT(CS_LFXT_DRIVE3);

    /*
     * Setting up clocks
     * MCLK = MCLK = 48MHz
     * SMCLK = MCLK/2 = 24Mhz
     * ACLK = REFO = 32Khz
     */
    MAP_CS_setDCOFrequency(48000000);
    MAP_CS_initClockSignal(CS_ACLK, CS_REFOCLK_SELECT, CS_CLOCK_DIVIDER_1);
    MAP_CS_initClockSignal(CS_SMCLK, CS_DCOCLK_SELECT, CS_CLOCK_DIVIDER_2);
    MAP_CS_initClockSignal(CS_MCLK, CS_DCOCLK_SELECT, CS_CLOCK_DIVIDER_1);
    MAP_CS_initClockSignal(CS_BCLK, CS_LFXTCLK_SELECT, CS_CLOCK_DIVIDER_1);

    //![Simple RTC Example]
    /* Initializing RTC with current time as described in time in
     * definitions section */
//    MAP_RTC_C_initCalendar(&currentTime, RTC_C_FORMAT_BCD);

    RTC_C->CTL0 = (RTC_C->CTL0 & ~RTC_C_CTL0_KEY_MASK) | RTC_C_KEY;

    BITBAND_PERI(RTC_C->CTL13, RTC_C_CTL13_HOLD_OFS) = 1;

    BITBAND_PERI(RTC_C->CTL13, RTC_C_CTL13_BCD_OFS) = 1;

    RTC_C->TIM0 = (currentTime.minutes << RTC_C_TIM0_MIN_OFS)
            | currentTime.seconds;
    __no_operation();
    RTC_C->TIM1 = (currentTime.dayOfWeek << RTC_C_TIM1_DOW_OFS)
            | currentTime.hours;
    __no_operation();
    RTC_C->DATE = (currentTime.month << RTC_C_DATE_MON_OFS)
            | currentTime.dayOfmonth;
    __no_operation();
    RTC_C->YEAR = currentTime.year;

    BITBAND_PERI(RTC_C->CTL0, RTC_C_CTL0_KEY_OFS) = 0;

    __no_operation();

    /* Setup Calendar Alarm for 10:05pm (for the flux capacitor) */
    MAP_RTC_C_setCalendarAlarm(0x04, 0x22, RTC_C_ALARMCONDITION_OFF,
            RTC_C_ALARMCONDITION_OFF);
    __no_operation();

    /* Enable interrupt for RTC Ready Status, which asserts when the RTC
     * Calendar registers are ready to read.
     * Also, enable interrupts for the Calendar alarm and Calendar event. */
    MAP_RTC_C_clearInterruptFlag( RTC_C_CLOCK_READ_READY_INTERRUPT
                    | RTC_C_CLOCK_ALARM_INTERRUPT);
    MAP_RTC_C_enableInterrupt( RTC_C_CLOCK_READ_READY_INTERRUPT
                    | RTC_C_CLOCK_ALARM_INTERRUPT);

    ii=0;
    /* Start RTC Clock */
    MAP_RTC_C_startClock();
    //![Simple RTC Example]

    /* Enable interrupts and go to sleep. */
    MAP_Interrupt_enableInterrupt(INT_RTC_C);
    MAP_Interrupt_enableSleepOnIsrExit();
    MAP_Interrupt_enableMaster();

    while(1)
    {
        MAP_PCM_gotoLPM0();
    }
}

/* RTC ISR */
void RTC_C_IRQHandler(void)
{
    uint32_t status;
    uint8_t iiConvertUpper, iiConvertLower, iiConvertAll;

    status = MAP_RTC_C_getEnabledInterruptStatus();
    MAP_RTC_C_clearInterruptFlag(status);

    if(status & RTC_C_CLOCK_READ_READY_INTERRUPT)
    {
        /* Interrupts every minute - Set breakpoint here */
        pastTime[ii] = MAP_RTC_C_getCalendarTime();
        MAP_GPIO_toggleOutputOnPin(GPIO_PORT_P1, GPIO_PIN0);
        iiConvertUpper = ii/10; // convert to BCD

        iiConvertLower = (ii - iiConvertUpper*10) & 0x0F;
        iiConvertUpper = (iiConvertUpper<<4) & 0x70;
        iiConvertAll = iiConvertUpper | iiConvertLower;
        if(!(iiConvertAll == pastTime[ii].seconds))
        {
            MAP_GPIO_toggleOutputOnPin(GPIO_PORT_P2, GPIO_PIN0);
            MAP_RTC_C_holdClock();
            __no_operation();
        }
        ii++;
        if(ii == 60)
        {
            ii=0;
        }
        __no_operation();
    }
    if (status & RTC_C_CLOCK_ALARM_INTERRUPT)
    {
        /* Interrupts at 10:04pm */
        // MAP_RTC_C_holdClock();
        __no_operation();
        MAP_GPIO_toggleOutputOnPin(GPIO_PORT_P2, GPIO_PIN1);
    }
}