Xbee UART msp430F5438A

#include  "msp430x54xA.h"

 I'm trying to use the MSP430F5438A Experimenter Board with an XBee module through UART. I am using the example "UART code provide from T.I website. I have attached my code. I am using pins "P3 . 4,5 " for UART. I also added P10.6,7 for the (Clear to Send) and (Request to Send). I am trying to transmit a  single character to another XBee module plugged directly into a desktop. I am not seeing anything in the terminal window of XCTU on the desktop for the other Xbee module. I'm thinking that my (Clear to Send) and (Request to Send) pins are not properly configure when the transmission start. Or it could possibly be that the RX and TX interrupt flags aren't properly configured. The baud rate is set to 9600. I know the processor sends a RTS and the XBee replies with a CTS. So would that be something that is internal or external? I don't think that is something that would be stored in the RXbuffer but at the sametime the processor is receiving a CTS so it has to store it some where?  During the interrupt subroutine is the CTS or RTS supposed to toggle? I know RTS needs to be high and CTS needs to be low but is it constant?

Any guidance would be greatly appreciated !

main(void)

{

  WDTCTL = WDTPW + WDTHOLD;                // Stop WDT

// P10SEL |= 0x80; // Sets up pins for inputs or outputs

  P10DIR |= 0x40;   // Sets RTS (Request to Send) has a output

  P10OUT |= 0x40;     // Sets output high for P10.6

  P10IN |= 0x80; // Sets CTS (Clear to Send) has a output

  P3SEL |= 0x30;       // P3.4,5 = USCI_A0 TXD/RXD

  UCA0CTL1 |= UCSWRST;     // **Put state machine in reset**

  UCA0CTL1 |= UCSSEL_2;     // SMCLK

  UCA0BR0 = 6;     // 1MHz 9600 (see User's Guide)

  UCA0BR1 = 0;    // 1MHz 9600

  UCA0MCTL = UCBRS_0 + UCBRF_13 + UCOS16;   // Modln UCBRSx=0, UCBRFx=0, // over sampling

  UCA0CTL1 &= ~UCSWRST;  // **Initialize USCI state machine**

  UCA0IE |= UCRXIE + UCTXIE;  // Enable USCI_A0 RX interrupt

  UCA0TXBUF = 0x40;

  __bis_SR_register(LPM0_bits + GIE);   // Enter LPM0, interrupts enabled

  __no_operation();         // For debugger

}

// Echo back RXed character, confirm TX buffer is ready first

#pragma

vector=USCI_A0_VECTOR

__interrupt

void USCI_A0_ISR(void)

{ 

switch(__even_in_range(UCA0IV,4))

  {

case 0: break;                             // Vector 0 - no interrupt

case 2:                                   // Vector 2 - RXIFG

break;

case 4:

while (!(UCA0IFG&UCTXIFG));             // USCI_A0 TX buffer ready?

  P10IN ^= 0x80;

    UCA0TXBUF = 0x40;    // TX -> RXed character

break;                             // Vector 4 - TXIFG

default: break;

  }

}