help with msp 430 interface and dip-switches

Development Boards MicroMod
1

1- I got a board with dip-switches. How do they work? What do they use for?

2- I’m tring to do a c# interface to change baud rate of msp430 but it does not work properly. I got a blinking led to see if it works fine. The problem is, when i change baud rate, led stops blinkind. When I set change it back to initial baud rate, led starts blinking again

#include <msp430x16x.h>
void checkMes (char );
void delay(); // delay
void blinker(); // blink led
char message; // check received data
volatile unsigned int delm=1; // # of delays
volatile int t=0; // led's not blinking when it is 0
volatile int m=0;
volatile int baud; // msp430 baud speed



void main(void)
{
WDTCTL = WDTPW + WDTHOLD; // Stop WDT
P3SEL |= 0xC0; // P3.6,7 = USART1 option select
ME2 |= UTXE1 + URXE1; // Enable USART1 TXD/RXD
 

UCTL1 |= CHAR; // 8-bit character
UTCTL1 |= SSEL0; // UCLK = ACLK
UBR01 = 0x0D; // 32k/2400 - 13.65
UBR11 = 0x00; 
UMCTL1 = 0x6B; // Modulation
UCTL1 &= ~SWRST; // Initialize USART state machine
IE2 |= URXIE1; // Enable USART1 RX interrupt

           
P1DIR |=BIT0;


P1OUT =~BIT0;
// Mainloop

for(;;){
_BIS_SR(LPM3_bits + GIE);

#if 1
while (!(IFG2 & UTXIFG1)); // USART1 TX buffer ready?

TXBUF1 = message;
#endif

while (t==0){
 // Enter LPM3 w/interrupt

checkMes (message); //check command message coming from interface

while (t==1)
blinker();  //start blinking the light


}

}
}
  

#if 1
// UART1 RX ISR will for exit from LPM3 in Mainloop
#pragma vector= USART1RX_VECTOR
__interrupt void usart1_rx (void)
{
 _BIC_SR_IRQ( LPM3_bits) ;// Clear LPM3 bits from 0(SR)
 t=0; 
 message=RXBUF1; 
 
}

#endif

void delay() //changes the blinking speed of led
{
  unsigned int i;
  i=10000;
  while(i>0)
    i--;
}


void blinker ()     // blinks led
{
  while (t==1){
    int i=delm;
    P1OUT ^=BIT0;
    while (i>0)    // waits for delay
    {
      i--;
      delay();
    }  
  }
}


void checkMes (char m)
{
  char c2;
  int com;  
  
  
  
  if ((m & 0x80) == 0x80)  //Check if it is blink command
  {
    if ((m & 0x10) == 0x10){    //check if it is blink button
      t=1;
      blinker();
     }
    else		// # of delays
    {
      c2=(m & 0x07);
      delm=c2;         
     t=1;
    }
  }
  else     // it is configuration
  {
   t=2;
    com = (m & 0x03);   //check baud rate
        switch(com){
    	case '1': // set baud rate 2400
                IE2=0x00;
                ME2=0x00;
                UCTL1=0x01; // Software reset
                UCTL1 |= CHAR; // 8-bit character
                UTCTL1 |= SSEL0; // UCLK = ACLK
    		UBR01=0x0D;
    		UBR11=0x00;
    		UMCTL1=0x6B;
                ME2 |= UTXE1 + URXE1; // Enable USART1 TXD/RXD
                UCTL1 &= ~SWRST; // Initialize USART state machine
                IE2 |= URXIE1; // Enable USART1 RX interrupt
    		baud=6;
                break;
    	case '2': // set baud rate 4800
                IE2=0x00;
                ME2=0x00;
                UCTL1=0x01; // Software reset
                UCTL1 |= CHAR; // 8-bit character
                UTCTL1 |= SSEL0; // UCLK = ACLK
    		UBR01=0x06;
    		UBR11=0x00;
    		UMCTL1=0x77;
                ME2 |= UTXE1 + URXE1; // Enable USART1 TXD/RXD
                UCTL1 &= ~SWRST; // Initialize USART state machine
                IE2 |= URXIE1; // Enable USART1 RX interrupt
                baud=7;
                break;
    	case '3': // set baud rate 9600
                IE2=0x00;
                ME2=0x00;
                UCTL1=0x01; // Software reset
                UCTL1 |= CHAR; // 8-bit character
                UTCTL1 |= SSEL0; // UCLK = ACLK
    		UBR01=0x03;
    		UBR11=0x00;
    		UMCTL1=0x29;
                ME2 |= UTXE1 + URXE1; // Enable USART1 TXD/RXD
                UCTL1 &= ~SWRST; // Initialize USART state machine
                IE2 |= URXIE1; // Enable USART1 RX interrupt
                baud=8;
        	break;
    	default:
      		break;
    }
  }
}