CCS/MSP432E401Y: How to capture the ADC values at specified PWM cycle???

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/*******************************************************************************
 * MSP432 ADC14 - Single Channel Continuous Sample w/ Timer_A Trigger
 *
 * Description: In this ADC14 code example, a single input channel is sampled
 * using the standard 3.3v reference. The source of the sample trigger for this
 * example is Timer_A CCR1. The ADC is setup to continuously sample/convert
 * from A0 when the trigger starts and store the results in resultsBuffer (it
 * is setup to be a circular buffer where resPos overflows to 0). Timer_A is
 * setup in Up mode and a Compare value of 16384  is set as the compare trigger
 *  and reset trigger. Once the Timer_A is started, after 0.5s it will trigger
 * the ADC14 to start conversions. Essentially this example will use
 * the Timer_A module to trigger an ADC conversion every 0.5 seconds.
 *
 *                MSP432P401
 *             ------------------
 *         /|\|                  |
 *          | |                  |
 *          --|RST         P5.5  |<--- A0 (Analog Input)
 *            |                  |
 *            |                  |
 *            |                  |
 *            |                  |
 *            |                  |
 *
 ******************************************************************************/
/* DriverLib Includes */
#include <ti/devices/msp432p4xx/driverlib/driverlib.h>

/* Standard Includes */
#include <stdint.h>
#include <stdbool.h>

/* Timer_A Continuous Mode Configuration Parameter */
const Timer_A_UpModeConfig upModeConfig =
{
        TIMER_A_CLOCKSOURCE_ACLK,            // ACLK Clock Source
        TIMER_A_CLOCKSOURCE_DIVIDER_1,       // ACLK/1 = 32Khz
        16384,
        TIMER_A_TAIE_INTERRUPT_DISABLE,      // Disable Timer ISR
        TIMER_A_CCIE_CCR0_INTERRUPT_DISABLE, // Disable CCR0
        TIMER_A_DO_CLEAR                     // Clear Counter
};

/* Timer_A Compare Configuration Parameter */
const Timer_A_CompareModeConfig compareConfig =
{
        TIMER_A_CAPTURECOMPARE_REGISTER_1,          // Use CCR1
        TIMER_A_CAPTURECOMPARE_INTERRUPT_DISABLE,   // Disable CCR interrupt
        TIMER_A_OUTPUTMODE_SET_RESET,               // Toggle output but
        16384                                       // 16000 Period
};

/* Statics */
static volatile uint_fast16_t resultsBuffer[UINT8_MAX];
static volatile uint8_t resPos;

int main(void)
{
    /* Halting WDT  */
    MAP_WDT_A_holdTimer();
    MAP_Interrupt_enableSleepOnIsrExit();
    resPos = 0;

    /* Setting up clocks
     * MCLK = MCLK = 3MHz
     * ACLK = REFO = 32Khz */
    MAP_CS_initClockSignal(CS_ACLK, CS_REFOCLK_SELECT, CS_CLOCK_DIVIDER_1);

    /* Initializing ADC (MCLK/1/1) */
    MAP_ADC14_enableModule();
    MAP_ADC14_initModule(ADC_CLOCKSOURCE_MCLK, ADC_PREDIVIDER_1, ADC_DIVIDER_1,
            0);

    /* Configuring GPIOs (5.5 A0) */
    MAP_GPIO_setAsPeripheralModuleFunctionInputPin(GPIO_PORT_P5, GPIO_PIN5,
    GPIO_TERTIARY_MODULE_FUNCTION);

    /* Configuring ADC Memory */
    MAP_ADC14_configureSingleSampleMode(ADC_MEM0, true);
    MAP_ADC14_configureConversionMemory(ADC_MEM0, ADC_VREFPOS_AVCC_VREFNEG_VSS,
    ADC_INPUT_A0, false);

    /* Configuring Timer_A in continuous mode and sourced from ACLK */
    MAP_Timer_A_configureUpMode(TIMER_A0_BASE, &upModeConfig);

    /* Configuring Timer_A0 in CCR1 to trigger at 16000 (0.5s) */
    MAP_Timer_A_initCompare(TIMER_A0_BASE, &compareConfig);

    /* Configuring the sample trigger to be sourced from Timer_A0  and setting it
     * to automatic iteration after it is triggered*/
    MAP_ADC14_setSampleHoldTrigger(ADC_TRIGGER_SOURCE1, false);

    /* Enabling the interrupt when a conversion on channel 1 is complete and
     * enabling conversions */
    MAP_ADC14_enableInterrupt(ADC_INT0);
    MAP_ADC14_enableConversion();

    /* Enabling Interrupts */
    MAP_Interrupt_enableInterrupt(INT_ADC14);
    MAP_Interrupt_enableMaster();

    /* Starting the Timer */
    MAP_Timer_A_startCounter(TIMER_A0_BASE, TIMER_A_UP_MODE);

    /* Going to sleep */
    while (1)
    {
        MAP_PCM_gotoLPM0();
    }
}

/* This interrupt is fired whenever a conversion is completed and placed in
 * ADC_MEM0 */
void ADC14_IRQHandler(void)
{
    uint64_t status;

    status = MAP_ADC14_getEnabledInterruptStatus();
    MAP_ADC14_clearInterruptFlag(status);


    if (status & ADC_INT0)
    {
        if(resPos == UINT8_MAX)
        {
           resPos = 0; 
        }
        
        resultsBuffer[resPos++] = MAP_ADC14_getResult(ADC_MEM0);
    }

}