#include <msp430.h>

void delay(unsigned int j)
{
    unsigned int i;
    for(i=0; i<=j; i++)
    {
    __delay_cycles(50000); __delay_cycles(50000);
    }
}

void UART_init()
{
    // Setup P3.0 UCA0RXD, P3.1 UCA0TXD
      P3SEL0 |= BIT0 | BIT1;                   // Set P3.0, P3.1 to non-IO
      P3DIR |= BIT0 | BIT1;                   // Enable UCA0RXD, UCA0TXD

      P1DIR |= BIT2;                          // ACLK set out to pin
      P1SEL0 |= BIT2;                          // P1.2 for debugging purposes.

      // Setup LFXT1
      UCSCTL6 &= ~(XT1OFF);                   // XT1 On
      UCSCTL6 |= XCAP_3;                      // Internal load cap

           
      // Setup eUSCI_A0
      UCA0CTLW0 |= UCSWRST;                   // **Put state machine in reset**
      UCA0CTLW0 |= UCSSEL_1;                  // CLK = ACLK
      UCA0BRW_L = 0x03;                       // 32kHz/9600=3.41 (see User's Guide)
      UCA0BRW_H = 0x00;                       //
      UCA0MCTLW = 0x5300;                     // Modulation UCBRSx=0x53, UCBRFx=0
      UCA0CTLW0 &= ~UCSWRST;                  // **Initialize USCI state machine**
    //  UCA0IE |= UCRXIE;                       // Enable USCI_A0 RX interrupt
}

void UART_Tx(unsigned char a)
{
    while (!(UCA0IFG & UCTXIFG));             // USCI_A0 TX buffer ready?
        UCA0TXBUF = a;
}

unsigned char UART_Rx()
{
    unsigned char rx;
    rx = UCA0RXBUF;
    while (!(UCA0IFG & UCRXIFG));             // USCI_A0 TX buffer ready?
    return rx;
}

void UART_Str(unsigned char *a)
{
    while(*a!='\0')
        {
            UART_Tx(*a);
            a++;
        }
}


void main(void)
{
    unsigned char read;
    WDTCTL = WDTPW | WDTHOLD;               // Stop WDT

    UART_init();
    
    while(1)
    {       
                UART_Str("EMDC...");     
    }
}