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用JTAG调试,TIMERA1_VECTOR中断只发生一次,就不发生了,问题出来哪里?
#include <msp430x20x2.h>
#include "VLO_Library.h"
#include "intrinsics.h"
unsigned int dco_delta;
unsigned long F_VLOCLK;
unsigned int TACCR0_INIT;
int main(void)
{
WDTCTL = WDTPW +WDTHOLD; // Stop Watchdog Timer
P1DIR |= 0x11; // P1.0,1,4 outputs
P1SEL |= 0x10; // P1.4 = SMCLK
BCSCTL3 = LFXT1S_2; // ACLK = VLO
BCSCTL1 = CALBC1_8MHZ; // 8MHz cal value
DCOCTL = CALDCO_8MHZ; // 8MHz cal value
__delay_cycles(100);
dco_delta = TI_measureVLO(); // dco delta = number of
// 1MHz cycles in 8 ACLK cycles
F_VLOCLK=8000000UL / dco_delta; //VLO时钟频率
TACCR0_INIT=F_VLOCLK/100-1;
//TACCTL0 = CCIE;
TACCR0 = TACCR0_INIT;
TACTL = TASSEL_1 + MC_1 + TAIE; //ACLK作为时钟源,不分频,开TIMERA1中断
P1OUT = 0x01;
__enable_interrupt();
while(1);
}
#pragma vector=TIMERA1_VECTOR
__interrupt void Timer_A(void)
{
if(TAIV==10)
{
P1OUT ^= 0x01; // 50HZ输出??
}
} |
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