Function TIMER_Init

bsp/efm32/Libraries/emlib/src/em_timer.c:130–165

/ * @brief * Initialize TIMER. * * @details * Notice that counter top must be configured separately with for instance * TIMER_TopSet(). In addition, compare/capture and dead-time insertion * init must be initialized separately if used. That should probably * be done prior to the use of this function if configuring the TIMER to * start when initialization is completed. * * @pa

 *   Pointer to TIMER initialization structure.
 ******************************************************************************/
void TIMER_Init(TIMER_TypeDef *timer, const TIMER_Init_TypeDef *init)
{
  EFM_ASSERT(TIMER_REF_VALID(timer));

  /* Stop timer if specified to be disabled (dosn't hurt if already stopped) */
  if (!(init->enable))
  {
    timer->CMD = TIMER_CMD_STOP;
  }

  /* Reset counter */
  timer->CNT = _TIMER_CNT_RESETVALUE;

  timer->CTRL =
    ((uint32_t)(init->prescale) << _TIMER_CTRL_PRESC_SHIFT) |
    ((uint32_t)(init->clkSel) << _TIMER_CTRL_CLKSEL_SHIFT) |
    ((uint32_t)(init->fallAction) << _TIMER_CTRL_FALLA_SHIFT) |
    ((uint32_t)(init->riseAction) << _TIMER_CTRL_RISEA_SHIFT) |
    ((uint32_t)(init->mode) << _TIMER_CTRL_MODE_SHIFT) |
    (init->debugRun               ?   TIMER_CTRL_DEBUGRUN  : 0) |
    (init->dmaClrAct              ?   TIMER_CTRL_DMACLRACT : 0) |
    (init->quadModeX4             ?   TIMER_CTRL_QDM_X4    : 0) |
    (init->oneShot                ?   TIMER_CTRL_OSMEN     : 0) |

#if defined(_EFM32_GIANT_FAMILY) || defined(_EFM32_TINY_FAMILY)
    (init->count2x                ?   TIMER_CTRL_X2CNT     : 0) |
    (init->ati                    ?   TIMER_CTRL_ATI       : 0) |
#endif
    (init->sync                   ?   TIMER_CTRL_SYNC      : 0);

  /* Start timer if specified to be enabled (dosn't hurt if already started) */
  if (init->enable)
  {
    timer->CMD = TIMER_CMD_START;
  }
}


/***************************************************************************//**