MSP432 低功耗情况下 单端口产生不同频率方波下会有较大不准的情况

用的是MSP432P401R LaunchPad-Red 2.0

Timer_A_PWMConfig pwmConfig0 =
{
        TIMER_A_CLOCKSOURCE_SMCLK,
        TIMER_A_CLOCKSOURCE_DIVIDER_1,
        64,
        TIMER_A_CAPTURECOMPARE_REGISTER_1,
        TIMER_A_OUTPUTMODE_RESET_SET,
        32
};

bool OZFlag = true;

Timer_A_PWMConfig pwmConfig1 =
{
        TIMER_A_CLOCKSOURCE_SMCLK,
        TIMER_A_CLOCKSOURCE_DIVIDER_1,
        64,
        TIMER_A_CAPTURECOMPARE_REGISTER_1,
        TIMER_A_OUTPUTMODE_RESET_SET,
        32
};
//![Simple Timer_A Config]

Timer_A_PWMConfig pwmConfig1 =
{
        TIMER_A_CLOCKSOURCE_SMCLK,
        TIMER_A_CLOCKSOURCE_DIVIDER_1,
        98,
        TIMER_A_CAPTURECOMPARE_REGISTER_1,
        TIMER_A_OUTPUTMODE_RESET_SET,
        49
};


int main(void)
{
    /* Halting the watchdog */
    MAP_WDT_A_holdTimer();

    //![Simple Timer_A Example]
    /* Setting MCLK to REFO at 128Khz for LF mode
     * Setting SMCLK to 64Khz */
    MAP_CS_setReferenceOscillatorFrequency(CS_REFO_128KHZ);
    MAP_CS_initClockSignal(CS_MCLK, CS_REFOCLK_SELECT, CS_CLOCK_DIVIDER_1);
    MAP_CS_initClockSignal(CS_SMCLK, CS_REFOCLK_SELECT, CS_CLOCK_DIVIDER_1);
    MAP_CS_initClockSignal(CS_HSMCLK, CS_REFOCLK_SELECT, CS_CLOCK_DIVIDER_1);

    MAP_PCM_setPowerState(PCM_AM_LF_VCORE0);

    /* Configuring GPIO2.4 as peripheral output for PWM */
    MAP_GPIO_setAsPeripheralModuleFunctionOutputPin(GPIO_PORT_P2, GPIO_PIN4,
            GPIO_PRIMARY_MODULE_FUNCTION);
    

    

    TIMER32_1->CONTROL = TIMER32_CONTROL_SIZE | TIMER32_CONTROL_MODE;

    // Load Timer32 Counter with initial value
    TIMER32_1->LOAD= 512;

    // Enalbe the Timer32 interrupt in NVIC
    __enable_irq();
    NVIC->ISER[0] = 1 << ((T32_INT1_IRQn) & 31);

    // Start Timer32 and enable interrupt
    TIMER32_1->CONTROL |= TIMER32_CONTROL_ENABLE |
            TIMER32_CONTROL_IE;

    // Disable sleep on exit from ISR
    SCB->SCR &= ~SCB_SCR_SLEEPONEXIT_Msk;

    // Ensures SLEEPONEXIT takes effect immediately
    __DSB();

    // Enter LPM0 and wait for the timer interrupt to wake-up
    __sleep();
    __no_operation();

}
void T32_INT1_IRQHandler(void)
{
    TIMER32_1->INTCLR |= BIT0;
    if(OZFlag)
    {
      MAP_Timer_A_generatePWM(TIMER_A0_BASE, &pwmConfig1);
      OZFlag = false;
    }
    else
    {
      MAP_Timer_A_generatePWM(TIMER_A0_BASE, &pwmConfig0);
      OZFlag = true;
    }
}

这部分是由于判断语句，活着pwm产生函数调用产生的延迟吗？麻烦您了～