main.c

MSP430有许多寄存器来设定程序的频率和周期

#include "MSP430.h"
int main( void )
{
  // Stop watchdog timer to prevent time out reset
  WDTCTL = WDTPW + WDTHOLD;
  //BCSCTL1&=~XT20FF;
 // BCSCTL2=SELS+DIVS1+DIVS0;
  
  TACTL=TASSEL0+TACLR;
  CCTL0=CCIE;
  CCR0=16384;
  P1DIR|=BIT7;
  TACTL|=MC0;
  _EINT();
  while(1);
  
 // return 0;
}

#pragma vector=TIMERA0_VECTOR
__interrupt void TIMERA0_interrupt(void)
{
  P1OUT^=BIT7;
}