HAL_StatusTypeDef HAL_TIMEx_ConfigBreakInput()

in CMake-armcc/Drivers/STM32L4xx_HAL_Driver/Src/stm32l4xx_hal_tim_ex.c [2044:2172]

• 105 lines of code
• 10 McCabe index (conditional complexity)

HAL_StatusTypeDef HAL_TIMEx_ConfigBreakInput(TIM_HandleTypeDef *htim,
                                             uint32_t BreakInput,
                                             TIMEx_BreakInputConfigTypeDef *sBreakInputConfig)

{
  uint32_t tmporx;
  uint32_t bkin_enable_mask;
  uint32_t bkin_polarity_mask;
  uint32_t bkin_enable_bitpos;
  uint32_t bkin_polarity_bitpos;

  /* Check the parameters */
  assert_param(IS_TIM_BREAK_INSTANCE(htim->Instance));
  assert_param(IS_TIM_BREAKINPUT(BreakInput));
  assert_param(IS_TIM_BREAKINPUTSOURCE(sBreakInputConfig->Source));
  assert_param(IS_TIM_BREAKINPUTSOURCE_STATE(sBreakInputConfig->Enable));
#if defined(DFSDM1_Channel0)
  if (sBreakInputConfig->Source != TIM_BREAKINPUTSOURCE_DFSDM1)
  {
    assert_param(IS_TIM_BREAKINPUTSOURCE_POLARITY(sBreakInputConfig->Polarity));
  }
#else
  assert_param(IS_TIM_BREAKINPUTSOURCE_POLARITY(sBreakInputConfig->Polarity));
#endif /* DFSDM1_Channel0 */

  /* Check input state */
  __HAL_LOCK(htim);

  switch (sBreakInputConfig->Source)
  {
    case TIM_BREAKINPUTSOURCE_BKIN:
    {
      bkin_enable_mask = TIM1_OR2_BKINE;
      bkin_enable_bitpos = TIM1_OR2_BKINE_Pos;
      bkin_polarity_mask = TIM1_OR2_BKINP;
      bkin_polarity_bitpos = TIM1_OR2_BKINP_Pos;
      break;
    }
    case TIM_BREAKINPUTSOURCE_COMP1:
    {
      bkin_enable_mask = TIM1_OR2_BKCMP1E;
      bkin_enable_bitpos = TIM1_OR2_BKCMP1E_Pos;
      bkin_polarity_mask = TIM1_OR2_BKCMP1P;
      bkin_polarity_bitpos = TIM1_OR2_BKCMP1P_Pos;
      break;
    }
    case TIM_BREAKINPUTSOURCE_COMP2:
    {
      bkin_enable_mask = TIM1_OR2_BKCMP2E;
      bkin_enable_bitpos = TIM1_OR2_BKCMP2E_Pos;
      bkin_polarity_mask = TIM1_OR2_BKCMP2P;
      bkin_polarity_bitpos = TIM1_OR2_BKCMP2P_Pos;
      break;
    }
#if defined(DFSDM1_Channel0)
    case TIM_BREAKINPUTSOURCE_DFSDM1:
    {
      bkin_enable_mask = TIM1_OR2_BKDF1BK0E;
      bkin_enable_bitpos = 8U;
      bkin_polarity_mask = 0U;
      bkin_polarity_bitpos = 0U;
      break;
    }
#endif /* DFSDM1_Channel0 */

    default:
    {
      bkin_enable_mask = 0U;
      bkin_polarity_mask = 0U;
      bkin_enable_bitpos = 0U;
      bkin_polarity_bitpos = 0U;
      break;
    }
  }

  switch (BreakInput)
  {
    case TIM_BREAKINPUT_BRK:
    {
      /* Get the TIMx_OR2 register value */
      tmporx = htim->Instance->OR2;

      /* Enable the break input */
      tmporx &= ~bkin_enable_mask;
      tmporx |= (sBreakInputConfig->Enable << bkin_enable_bitpos) & bkin_enable_mask;

      /* Set the break input polarity */
#if defined(DFSDM1_Channel0)
      if (sBreakInputConfig->Source != TIM_BREAKINPUTSOURCE_DFSDM1)
#endif /* DFSDM1_Channel0 */
        {
          tmporx &= ~bkin_polarity_mask;
          tmporx |= (sBreakInputConfig->Polarity << bkin_polarity_bitpos) & bkin_polarity_mask;
        }

      /* Set TIMx_OR2 */
      htim->Instance->OR2 = tmporx;
      break;
    }
    case TIM_BREAKINPUT_BRK2:
    {
      /* Get the TIMx_OR3 register value */
      tmporx = htim->Instance->OR3;

      /* Enable the break input */
      tmporx &= ~bkin_enable_mask;
      tmporx |= (sBreakInputConfig->Enable << bkin_enable_bitpos) & bkin_enable_mask;

      /* Set the break input polarity */
#if defined(DFSDM1_Channel0)
      if (sBreakInputConfig->Source != TIM_BREAKINPUTSOURCE_DFSDM1)
#endif /* DFSDM1_Channel0 */
        {
          tmporx &= ~bkin_polarity_mask;
          tmporx |= (sBreakInputConfig->Polarity << bkin_polarity_bitpos) & bkin_polarity_mask;
        }

      /* Set TIMx_OR3 */
      htim->Instance->OR3 = tmporx;
      break;
    }
    default:
      break;
  }

  __HAL_UNLOCK(htim);

  return HAL_OK;
}