clocksTimer.c

#include <msp430.h>
#include "libTimer.h"

void configureClocks(){
  WDTCTL = WDTPW + WDTHOLD;//Disable Watchdog Timer
  BCSCTL1 = CALBC1_16MHZ;  // Set DCO to 16 Mhz
  DCOCTL = CALDCO_16MHZ;
    
  BCSCTL2 &= ~(SELS);     // SMCLK source = DCO
  BCSCTL2 |= DIVS_3;      // SMCLK = DCO / 8
}


// enable watchdog timer periodic interrupt
// period = SMCLOCK/32k
void enableWDTInterrupts()  
{
  WDTCTL = WDTPW |	   // passwd req'd.  Otherwise device resets
    WDTTMSEL |		     // watchdog interval mode 
    WDTCNTCL |		     // clear watchdog count
    1;			     // divide SMCLK by 8192
  IE1 |= WDTIE;		   // Enable watchdog interval timer interrupt
}


void timerAUpmode()
{
  TA0CCR0 = 0; 
  TA0CCR1 = 0; 
  TA0CCTL1 = OUTMOD_3;		/* Toggle p1.6 when timer=count1 */
  
  // Timer A control:
  //  Timer clock source 2: system clock (SMCLK)
  //  Mode Control 1: continuously 0...CCR0
  TACTL = TASSEL_2 + MC_1;   
}