Subversion Repositories openmsp430

#include "omsp_system.h"

#include "timerA.h"

//---------------------------------------------------//

//    TA_WAIT_NO_LPM                                 //

// ( the function implements a wait by continously ) //

// ( polling the TAR register                      ) //

//                                                   //

//---------------------------------------------------//

void ta_wait_no_lpm(unsigned int time_cnt) {

  // Start and re-initialize TimerA

  TACTL = TASSEL0 | TACLR | MC_2;

  // Wait until time is over

  while(TAR < time_cnt);

}

//--------------------------------------------------//

//    WAIT FUNCTION                                 //

// ( the function brings the core to LPM0 state )   //

// ( the timerA IRQ will exit the LPM0 state    )   //

//                                                  //

//--------------------------------------------------//

void ta_wait(unsigned int time_cnt) {

  // Set time limit for IRQ generation

  TACCR0 = time_cnt;

  // Start and re-initialize TimerA

  TACTL  = TASSEL0 | TACLR | MC_1 | TAIE;

  // Go to Low-Power-Mode 0

  LPM0;

}

//--------------------------------------------------//

//    TIMER A INTERRUPT                             //

//--------------------------------------------------//

wakeup interrupt (TIMERA1_VECTOR) INT_timerA1(void) {

  // Clear the receive pending flag & stop timer A

  TACTL = TAIFG;

  // Exit the low power mode

  LPM0_EXIT;

}