#include "Energia.h"
volatile int state=HIGH;
void setup()
{
  // put your setup code here, to run once:
  
   pinMode( RED_LED ,OUTPUT); //  set P1_0 output
   TA1CTL = TASSEL_1+TACLR+ MC_2+TAIE;   

}

void loop()
{
  // put your main code here, to run repeatedly:
  digitalWrite( RED_LED, state);   //ser P4_1 high
}

// Timer interrupt service routine
__attribute__((interrupt(TIMER1_A0_VECTOR)))
void Timer_A_int(void)
{
  digitalWrite( RED_LED, LOW);   //ser P4_1 high
}
此帖出自小平头技术问答