| void  SysInit(void)
 {
 P1DIR = 0xea;           // 1110 1010
 P1OUT = 0x3a;           // p14 上拉
 P1REN = 0x10;
 P1SEL2 = 0;
 P1SEL2 |= 0x05;
 P1SEL = 0;
 P1SEL |= 0x05;
 P2DIR = 0xff;
 P2OUT = 0x00;
 P2SEL = 0x00;
 
 TACCTL0 = CCIE;
 TACCR0 =  0x1234;
 TACTL = TASSEL_2 + MC_2 + TAIE;   //  时钟源 SMCLK + 连续模式 +中断使能
 }
 
 int main( void )
 {
 // Stop watchdog timer to prevent time out reset
 WDTCTL = WDTPW + WDTHOLD;
 BCSCTL1 = CALBC1_1MHZ;                    // Set DCO to 1MHz
 DCOCTL =  CALDCO_1MHZ;
 BCSCTL3 |= LFXT1S_2;                    // LFXT1 = VLO
 IFG1 &= ~OFIFG;
 
 SysInit();
 
 __bis_SR_register(GIE);
 while(1);
 }
 
 #pragma vector=TIMER0_A0_VECTOR
 __interrupt void Timer_A (void)
 {
 P1OUT ^= 0x80;
 TACCR0 += 0x1234;
 }
 |