Exemplo n.º 1
0
/**
  * @brief  Starts the acquisition.
  * @param  htsc: pointer to a TSC_HandleTypeDef structure that contains
  *         the configuration information for the specified TSC.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_TSC_Start(TSC_HandleTypeDef* htsc)
{
  /* Check the parameters */
  assert_param(IS_TSC_ALL_INSTANCE(htsc->Instance));
  
  /* Process locked */
  __HAL_LOCK(htsc);
  
  /* Change TSC state */
  htsc->State = HAL_TSC_STATE_BUSY;

  /* Clear interrupts */
  __HAL_TSC_DISABLE_IT(htsc, (TSC_IT_EOA | TSC_IT_MCE));

  /* Clear flags */
  __HAL_TSC_CLEAR_FLAG(htsc, (TSC_FLAG_EOA | TSC_FLAG_MCE));

  /* Stop discharging the IOs */
  __HAL_TSC_SET_IODEF_INFLOAT(htsc);
  
  /* Launch the acquisition */
  __HAL_TSC_START_ACQ(htsc);
  
  /* Process unlocked */
  __HAL_UNLOCK(htsc);
  
  /* Return function status */
  return HAL_OK;
}
Exemplo n.º 2
0
/**
  * @brief  Start the acquisition in interrupt mode.
  * @param  htsc: pointer to a TSC_HandleTypeDef structure that contains
  *         the configuration information for the specified TSC.
  * @retval HAL status.
  */
HAL_StatusTypeDef HAL_TSC_Start_IT(TSC_HandleTypeDef* htsc)
{
  /* Check the parameters */
  assert_param(IS_TSC_ALL_INSTANCE(htsc->Instance));
  assert_param(IS_TSC_MCE_IT(htsc->Init.MaxCountInterrupt));

  /* Process locked */
  __HAL_LOCK(htsc);
  
  /* Change TSC state */
  htsc->State = HAL_TSC_STATE_BUSY;
  
  /* Enable end of acquisition interrupt */
  __HAL_TSC_ENABLE_IT(htsc, TSC_IT_EOA);

  /* Enable max count error interrupt (optional) */
  if (htsc->Init.MaxCountInterrupt == ENABLE)
  {
    __HAL_TSC_ENABLE_IT(htsc, TSC_IT_MCE);
  }
  else
  {
    __HAL_TSC_DISABLE_IT(htsc, TSC_IT_MCE);
  }

  /* Clear flags */
  __HAL_TSC_CLEAR_FLAG(htsc, (TSC_FLAG_EOA | TSC_FLAG_MCE));
  
  /* Set touch sensing IOs not acquired to the specified IODefaultMode */
  if (htsc->Init.IODefaultMode == TSC_IODEF_OUT_PP_LOW)
  {
    __HAL_TSC_SET_IODEF_OUTPPLOW(htsc);
  }
  else
  {
    __HAL_TSC_SET_IODEF_INFLOAT(htsc);
  }
  
  /* Launch the acquisition */
  __HAL_TSC_START_ACQ(htsc);

  /* Process unlocked */
  __HAL_UNLOCK(htsc);
  
  /* Return function status */
  return HAL_OK;
}