求解:为什么捕获不到数据?程序如下

meng ruan

Other Parts Discussed in Thread: MSP430F5529

用的是MSP430F5529芯片:

{

/*捕获*/

P2DIR &= ~BIT4; // P2.4 input
P2REN |= BIT4; // P2.4 上下拉电阻
P2OUT |= BIT4; // P2.4 输出为1 上拉
P2SEL |= BIT4; // P2.4 options select

// TA0CCTL0 = CCIE + CAP + SCS + CM_2 + CCIS_0;// CCR0中断使能，捕获模式，同步，下降沿捕获，CCIxA
TA0CCTL1 = CCIE + CAP + SCS + CM_2 + CCIS_0;// CCR1中断使能，捕获模式，同步，下降沿捕获，CCIxA
TA0CTL = TAIE + TASSEL_2 + MC_2 + ID_0 + TACLR;//使能中心计数器中断，SMCLK, continue mode,不分频， clear TAR
}

// Timer2_A8 interrupt service routine
#pragma vector=TIMER0_A1_VECTOR
__interrupt void TIMER0_A1_ISR(void)
{
switch(__even_in_range(TA0IV,14))
{
case 0:
break; // No interrupt
case 2: // CCR1
if(F_C1)
{
number[1]=TA0CCR1;
number[2]=number[1]+count*65535-number[0];
count=0;
F_C1=0;
F0_C=1;
}
else
{
number[0]=TA0CCR1;
F_C1=1;
count=0;
}
break;
case 4: // CCR2
break;
case 6:
break; // reserved
case 8:
break; // reserved
case 10:
break; // reserved
case 12:
break; // reserved
case 14:
count++; // overflow
break;
default:
break;
}
}