系统老是复位

只看该作者 · 2017-11-29 20:11

我用LaunchPad做仿真器，连接到目标板，写了一个TIMERA中断，系统老是复位

只看该作者 · 2017-11-29 20:11

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;
}