[General] TSOP38438 interfaced with USCI Uart in IrDA mode error

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#include "msp430x22x4.h"
 
unsigned char RxByte;
unsigned char TxByte;
void main(void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop WDT
DCOCTL = CALDCO_8MHZ; // Load 8MHz constants
BCSCTL1 = CALBC1_8MHZ;
P3SEL |= 0x30; // Use P3.4/P3.5 for
USCI_A0
P1OUT &= ~0x01; // Clear P1.0
P1DIR |= 0x01; // P1.0 output
UCA0CTL0 =0x00;
UCA0CTL1 |= UCSWRST; // Set SW Reset
UCA0CTL1 = UCSSEL_2 + UCSWRST;
UCA0BR0 = 4; // Baudrate = 115200 Hz
UCA0BR1 = 0;
UCA0MCTL = UCBRS_5 + UCBRF_3 + UCOS16;
UCA0IRTCTL = UCIRTXPL2 + UCIRTXPL0 + UCIRTXCLK + UCIREN;
// Pulse length = 6 half clock cyc
// Enable BITCLK16, IrDAenc/dec
UCA0IRRCTL = UCIRRXPL; // Light = low pulse
UCA0CTL1 &= ~UCSWRST; // Resume operation
IE2 |= UCA0RXIE; // Enable RX int
while (1)
{
__disable_interrupt();
IE2 |= UCA0RXIE; // Enable RX int
__bis_SR_register(CPUOFF + GIE); // Enter LPM0 w/interrupts
 
if ('p' == RxByte) // RX OK?
{
P1OUT |= 0x01; // LED P1.0 on
while (!(IFG2 & UCA0TXIFG)); // Ensure TX buffer is ready
UCA0TXBUF = RxByte; // Move RX'd character to USCI_A0
P1OUT &= ~0x01; // Clear P1.0
 
}
}
}
 
//--------------------------------
----------
// Read RXed character from USCI_A0, return from LPM0
//--------------------------------
----------
#pragma vector = USCIAB0RX_VECTOR
__interrupt void USCIAB0RX_ISR(void)
{
RxByte = UCA0RXBUF; // Get RXed character
IE2 &= ~UCA0RXIE; // Disable RX int
__bic_SR_register_on_exit(CPUOFF); // Return active after
receiption
}