基于msp430g2553（launchpad）的定时器程序

只看该作者 · 2014-7-4 16:41

include  <msp430g2553.h>

void main(void)
{
  WDTCTL = WDTPW + WDTHOLD;                // Stop WDT
  P1SEL |= 0x06;                         // P1.1 - P1.2 option select,外围模块的功能
  P1DIR |= 0xff;                         // P1.0 - P1.2 outputs
  CCTL0 = OUTMOD_4 + CCIE;                // CCR0 toggle, interrupt enabled
  CCTL1 = OUTMOD_4 + CCIE;                // CCR1 toggle, interrupt enabled
  TACTL = TASSEL_2 +  MC_2 + TAIE;       // SMCLK, Contmode, int enabled

  _BIS_SR(LPM0_bits + GIE);                // Enter LPM0 w/ interrupt
}

// Timer A0 interrupt service routine
#pragma vector=TIMER0_A0_VECTOR
__interrupt void Timer_A0 (void)
{
  CCR0 += 60000;                            // Add Offset to CCR0
  P1OUT ^= BIT0;
}

// Timer_A2 Interrupt Vector (TA0IV) handler
#pragma vector=TIMER0_A1_VECTOR
__interrupt void Timer_A1(void)
{
  switch( TA0IV )
  {
  case  2: CCR1 += 30000;                   // Add Offset to CCR1
         P1OUT ^= BIT6;
         break;
  case  4: CCR2 += 60000;                   // Add Offset to CCR1
         P1OUT ^= BIT4;
         break;
特别注意定时器服务程序：#pragma vector=TIMER0_A0_VECTOR与普通的msp430程序书写不同