MSP430 Uart Receiver Interrupt

Hi,

I want to check that whether my Rx ISR is getting executed. I wrote the following code to enable the RX interrupt and the ISR. But my ISR is not getting executed? Can anyone please tell me where am I doing wrong or missing something?

Here is my code for enabling ISR and my ISR routine.

Code for enabling ISR

EUSCI_A_UART_initAdvance(EUSCI_A0_BASE,
                    EUSCI_A_UART_CLOCKSOURCE_SMCLK,
                    8,
                    0,
                    0xD6,
                    EUSCI_A_UART_NO_PARITY,
                    EUSCI_A_UART_LSB_FIRST,
                    EUSCI_A_UART_ONE_STOP_BIT,
                    EUSCI_A_UART_MODE,
                    EUSCI_A_UART_LOW_FREQUENCY_BAUDRATE_GENERATION );

            EUSCI_A_UART_enable(EUSCI_A0_BASE);

            EUSCI_A_UART_enableInterrupt(EUSCI_A0_BASE,EUSCI_A_UART_RECEIVE_INTERRUPT); // Enable interrupt

            __enable_interrupt();
            __bis_SR_register(GIE);

ISR :

#pragma vector=USCI_A0_VECTOR

__interrupt void USCI_A0_ISR(void)
{

      
        switch (__even_in_range(UCA0IV, USCI_UART_UCTXCPTIFG)) {
        case USCI_NONE: break;
        case USCI_UART_UCRXIFG:
            //rx = EUSCI_A_UART_receiveData(EUSCI_A0_BASE);
           
                break;
        case USCI_UART_UCTXIFG: break;
        case USCI_UART_UCSTTIFG: break;
        case USCI_UART_UCTXCPTIFG: break;
        }
}

Thanks in advance

Ayush