MSP430 UART receiving a string - TX problem - c

Question

Using MSP430F6736A embedded programming. Code written in Code Composer Studio. I have a problem in my code, but i have no idea what i can do to fix it.
When I compile the program in code composer, works well but UART are sending to PC just ".ø€.ø€.€€x" that means i'm getting only strange charracters
#include "msp430g2553.h"
#include <stdio.h>
float RLDR=0, lux=0, v0=0;
unsigned int ADC10_vetor[16]={0};
unsigned int sum=0;
unsigned char i=0;
unsigned char TX_data[32], tx_index = 0, lux_int =0;
void ini_ucon(void);
void ini_p1_p2(void);
void ini_Timer0(void);
void ini_ADC10(void);
void ini_USCI_UART(void);
void ini_ucon(void){
WDTCTL = WDTPW | WDTHOLD;
DCOCTL = CALDCO_8MHZ;
BCSCTL1 = CALBC1_8MHZ;
BCSCTL2 = DIVS0 + DIVS1; //SMCLK = 1MHz
__enable_interrupt();
}
void ini_p1_p2(void){
P1DIR = 0xFF;
P1OUT = 0x00;
P2DIR = 0xFF;
P2OUT = 0x00;
}
void ini_Timer0(void){
TA0CTL = TASSEL1 + ID1 + ID0 + MC0; //SMCLK = 1MHz/8 = 125000
TA0CCTL1 = OUTMOD0 + OUTMOD1 + OUTMOD2 + OUT;
TA0CCR0 = 62499; //2Hz = 0.5 secs. , TA0CCR0 = 0.5*125000 - 1 = 62499
TA0CCR1 = 31249; //PWM = 50%
}
void ini_ADC10(void){
ADC10CTL0 = ADC10SHT1 + MSC + ADC10ON + ADC10IE;
ADC10CTL1 = INCH0 + INCH2 + SHS0 + ADC10SSEL1 + CONSEQ1;
ADC10AE0 = BIT5; //P1.5 para A5
ADC10DTC0 = 0;
ADC10DTC1 = 16;
ADC10SA = &ADC10_vetor[0];
ADC10CTL0 |= ENC;
}
int main(void){
ini_ucon();
ini_p1_p2();
ini_Timer0();
ini_ADC10();
ini_USCI_UART();
while(1){
}
}
#pragma vector=ADC10_VECTOR
__interrupt void ADC10_RTI(void){
ADC10CTL0 &= ~ENC;
soma = 0;
for(i=0;i<16;i++){
sum = sum + ADC10_vetor[i];
}
sum = sum >> 4;
//RLDR = (42625000)/(3*sum)-10000;
//lux = 500/(RLDR/1000);
//v0=5*(sum/(sum+10000));
v0=sum*(3.6/1024);
RLDR = (10000*(5-v0))/v0;
lux = (500/(RLDR/1000));
lux_int = (unsigned char) lux;
sprintf(&TX_data[0], "LUX = %d \n", lux_int);
UCA0TXBUF = TX_data[0];
tx_index++;
ADC10SA = &ADC10_vetor[0];
ADC10CTL0 |= ENC;
}
#pragma vector=USCIAB0TX_VECTOR
__interrupt void RTI_USCI_UART(void)
{
IFG2 &= ~UCA0TXIFG;
if(TX_data[tx_index] == '\0'){
tx_index = 0;
}else{
if(tx_index >= 32){
tx_index = 0;
}else{
UCA0TXBUF = TX_data[tx_index];
tx_index++;
}
}
}
void ini_USCI_UART(void){
UCA0CTL1 |= UCSWRST;
UCA0CTL0 = 0;
UCA0CTL1 = UCSSEL0 + UCSSEL1 + UCSWRST;
UCA0BR0 = 0xA0;
UCA0BR1 = 0x01;
UCA0MCTL = UCBRS1 + UCBRS2;
UCA0STAT = 0;
P1SEL |= BIT2;
P1SEL2 |= BIT2;
UCA0CTL1 &= ~UCSWRST;
IFG2 &= ~UCA0TXIFG;
IE2 |= UCA0TXIE;
}
Does anyone have an idea how to fix this?