#include <msp430x44x.h>

#define P1ON 0x90
#define P2ON 0x60
#define DTR1 0x02
#define DTR2 0x01

void main(void)
{
  WDTCTL = WDTPW + WDTHOLD;

// FLL module
  FLL_CTL0 |= XCAP0PF;                
  FLL_CTL1= XT2OFF;                      //SMCLK - on, XT2 - off, MCLK - DC0CLK, SMCLK -DCOCLK, ACLK devider 1
  FLL_CTL0 = DCOPLUS;
  SCFQCTL = 128-1;                      
  SCFI0 = FLLD_2 +FN_2;                // DCO 1.4 - 12 MHz (FLLD_2 +FN_2)
// FLL module

// Порты на комп
  UCTL0=SWRST;
  UTCTL0 = SSEL1;          // UCLK = SMCLK
  UBR10 = 0x01;              // 8MHz 19200
  UBR00 = 0xA0;             // 8MHz 19200
  UMCTL0 = 0xBB;           // 8MHz 19200
  UCTL0 =  0x10;             // 8n1
  P2SEL |= 0x30;             // P2.4,5 = USART0 TXD/RXD
  P2DIR |= 0x10;             // P2.4 output
  ME1 |= UTXE0 + URXE0;   // вкл USART0 TXD/RXD
  UCTL0 &= ~SWRST;
  IE1 |= URXIE0;            //  вкл USART0 RX interrupt

//Внешнее устройство
  UTCTL1 = SSEL1;           // UCLK = SMCLK
  UBR11 = 0x01;             // 8MHz 19200
  UBR01 = 0xA0;             // 8MHz 19200
  UMCTL1 = 0xBB;            // 8MHz 19200
  UCTL1 =  0x10;            // 8n1
  P4SEL = 0x03;             // P4.0,1 = USART1 TXD/RXD
  P4DIR = 0xFD;             // P4.1 output
  ME2 |= UTXE1 + URXE1;     //  USART1 TXD/RXD
  IE2 &= ~0x30;             // откл RxTx interrupts

  P4OUT = 0x50;             // откл RX and TX

  BTCTL = BT_ADLY_125;      // BT_fLCD_DIV128
  SVSCTL = 0x70;            // SVS 2.65 volt

  P1IE = DTR1+DTR2;       // вкл INT at port 1 and port 2
  IE2 |= BTIE;              // вкл basic timer
  WDTCTL = WDT_ARST_1000;   // Start WDT (1sec)
  IE1 |= 0x01;              // вкл WDT interrupt;

  _EINT();
}

#pragma vector=UART0RX_VECTOR
__interrupt void usart0_rx (void)
{
    IFG1 &= ~URXIFG0;    
    while ((IFG2 & UTXIFG1) == 0);
    TXBUF1 = RXBUF0;
}

#pragma vector=UART1RX_VECTOR
__interrupt void usart1_rx (void)
{
    IFG2 &= ~URXIFG1;    
    while ((IFG1 & UTXIFG0) == 0);
    TXBUF0 = RXBUF1;
}

#pragma vector=BASICTIMER_VECTOR
__interrupt void RTC(void)
{
  IFG2 &= ~BTIFG;
  // Reset WotchDog Timer
  WDTCTL = WDT_ARST_1000;
}

UBR10 = 0x01;              // 8MHz 19200
UBR00 = 0xA0;             // 8MHz 19200
UMCTL0 = 0xBB;           // 8MHz 19200

while ((IFG2 & UTXIFG1) == 0);

  UBR10 = 0x03;        
  UBR00 = 0x41;          
  UMCTL0 = 0xBB;

FLL_CTL0 |= DCOPLUS + XCAP18PF;                // DCO+ set, freq = xtal x D x N+1
SCFI0 |= FN_4;                                // x2 DCO freq, 8MHz nominal DCO
SCFQCTL = 121;                              // (121+1) x 32768 x 2 = 7.99 MHz