CCS/MSP430F5529: msp4305529

Tool/software: Code Composer Studio

Dear Gracious community members,

I am trying to read data from UART in serial terminal, only when propmted; aka serial communication protocols used by almost all the available devices. Now when I send the appropriate command, the microprocessor starts a continous stream of repeted information. What I would like is, only one instance of this information, each time I send the command. I have attached the code below.

Any help would be much apprecited.

Thank you.

With Warm Regards

Subhronil

#include <msp430.h>
#include <math.h>
#include <stdio.h>

void main (void)
{
    WDTCTL = WDTPW | WDTHOLD;
    char str[] = "The Answer is: ";
    char check = 'a';  // the command
    P1DIR |= BIT0;
    //USCI setup Code =========================================================================================
    P4SEL |= 0x30;
    UCA1CTL1 |= UCSWRST;
    UCA1CTL1 |= UCSSEL_1;
    //UCA1CTL1 |= UCBRKIE_1;
    UCA1BR0 = 3;
    UCA1BR1 = 0x00;
    UCA1MCTL = 0x06;
    UCA1CTL0 = 0x00;
    UCA1IE = 0x01;
    UCA1CTL1 &= ~UCSWRST;
//the main loop**********************************************************************************************
    for(;;)
    {
        
        int i = 0;
    
        UCA1CTL1 |= UCSWRST;
        UCA1CTL1 &= ~UCSWRST;
        if ((UCA1RXBUF == check)&(UCRXIFG))
       
        {
            
            while(str[i] != '\0') // send the first String
            {
                UCA1TXBUF = str[i];
                while (UCA1STAT&UCBUSY);
                i++;

            }
            UCA1TXBUF = 0x0a;    // for next line
            while (UCA1STAT&UCBUSY);

            UCA1TXBUF = 0x0d;    // for next line
            while (UCA1STAT&UCBUSY);

        }
        else
            P1OUT ^= 0x01;
        __delay_cycles(75000);

    }
}