/**
  * @brief Initializes the SmartCard mode according to the specified
  *         parameters in the SMARTCARD_InitTypeDef and create the associated handle .
  * @param  hsc: pointer to a SMARTCARD_HandleTypeDef structure that contains
  *                the configuration information for SMARTCARD module.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_SMARTCARD_Init(SMARTCARD_HandleTypeDef *hsc)
{
  /* Check the SMARTCARD handle allocation */
  if(hsc == NULL)
  {
    return HAL_ERROR;
  }

  /* Check the parameters */
  assert_param(IS_SMARTCARD_INSTANCE(hsc->Instance));
  assert_param(IS_SMARTCARD_NACK_STATE(hsc->Init.NACKState));

  if(hsc->gState == HAL_SMARTCARD_STATE_RESET)
  {  
    /* Allocate lock resource and initialize it */
    hsc->Lock = HAL_UNLOCKED;
    /* Init the low level hardware : GPIO, CLOCK, CORTEX...etc */
    HAL_SMARTCARD_MspInit(hsc);
  }
  
  hsc->gState = HAL_SMARTCARD_STATE_BUSY;

  /* Set the Prescaler */
  MODIFY_REG(hsc->Instance->GTPR, USART_GTPR_PSC, hsc->Init.Prescaler);

  /* Set the Guard Time */
  MODIFY_REG(hsc->Instance->GTPR, USART_GTPR_GT, ((hsc->Init.GuardTime)<<8));

  /* Set the Smartcard Communication parameters */
  SMARTCARD_SetConfig(hsc);

  /* In SmartCard mode, the following bits must be kept cleared: 
  - LINEN bit in the USART_CR2 register
  - HDSEL and IREN bits in the USART_CR3 register.*/
  hsc->Instance->CR2 &= ~USART_CR2_LINEN;
  hsc->Instance->CR3 &= ~(USART_CR3_IREN | USART_CR3_HDSEL);

  /* Enable the SMARTCARD Parity Error Interrupt */
  __HAL_SMARTCARD_ENABLE_IT(hsc, SMARTCARD_IT_PE);

  /* Enable the SMARTCARD Framing Error Interrupt */
  __HAL_SMARTCARD_ENABLE_IT(hsc, SMARTCARD_IT_ERR);

  /* Enable the Peripheral */
  __HAL_SMARTCARD_ENABLE(hsc);

  /* Configure the Smartcard NACK state */
  MODIFY_REG(hsc->Instance->CR3, USART_CR3_NACK, hsc->Init.NACKState);

  /* Enable the SC mode by setting the SCEN bit in the CR3 register */
  hsc->Instance->CR3 |= (USART_CR3_SCEN);

  /* Initialize the SMARTCARD state*/
  hsc->ErrorCode = HAL_SMARTCARD_ERROR_NONE;
  hsc->gState= HAL_SMARTCARD_STATE_READY;
  hsc->RxState= HAL_SMARTCARD_STATE_READY;

  return HAL_OK;
}
/**
  * @brief Initializes the SMARTCARD mode according to the specified
  *         parameters in the SMARTCARD_InitTypeDef and creates the associated handle .
  * @param hsc: SMARTCARD handle
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_SMARTCARD_Init(SMARTCARD_HandleTypeDef *hsc)
{
  /* Check the SMARTCARD handle allocation */
  if(hsc == NULL)
  {
    return HAL_ERROR;
  }
  
  /* Check the USART associated to the SmartCard */
  assert_param(IS_SMARTCARD_INSTANCE(hsc->Instance));
  
  if(hsc->State == HAL_SMARTCARD_STATE_RESET)
  {  
    /* Allocate lock resource and initialize it */
    hsc->Lock = HAL_UNLOCKED;

    /* Init the low level hardware : GPIO, CLOCK, CORTEX */
    HAL_SMARTCARD_MspInit(hsc);
  }
  
  hsc->State = HAL_SMARTCARD_STATE_BUSY;
  
  /* Disable the Peripheral */
  __HAL_SMARTCARD_DISABLE(hsc);
  
  /* Set the SMARTCARD Communication parameters */
  SMARTCARD_SetConfig(hsc);
  
  if(hsc->AdvancedInit.AdvFeatureInit != SMARTCARD_ADVFEATURE_NO_INIT)
  {
    SMARTCARD_AdvFeatureConfig(hsc);
  }
  
  /* In SmartCard mode, the following bits must be kept cleared: 
  - LINEN in the USART_CR2 register,
  - HDSEL and IREN  bits in the USART_CR3 register.*/
  hsc->Instance->CR2 &= ~(USART_CR2_LINEN); 
  hsc->Instance->CR3 &= ~(USART_CR3_HDSEL | USART_CR3_IREN); 
  
  /* set the USART in SMARTCARD mode */ 
  hsc->Instance->CR3 |= USART_CR3_SCEN; 
  
  /* Enable the Peripheral */
  __HAL_SMARTCARD_ENABLE(hsc);
  
  /* TEACK and/or REACK to check before moving hsc->State to Ready */
  return (SMARTCARD_CheckIdleState(hsc));
}
Beispiel #3
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/**
  * @brief  Initializes the SmartCard mode according to the specified
  *         parameters in the SMARTCARD_HandleTypeDef and create the associated handle.
  * @param  hsc: Pointer to a SMARTCARD_HandleTypeDef structure that contains
  *              the configuration information for the specified SMARTCARD module.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_SMARTCARD_Init(SMARTCARD_HandleTypeDef *hsc)
{
  /* Check the SMARTCARD handle allocation */
  if(hsc == NULL)
  {
    return HAL_ERROR;
  }

  /* Check Wordlength, Parity and Stop bits parameters */
  if (  (!(IS_SMARTCARD_WORD_LENGTH(hsc->Init.WordLength)))
      ||(!(IS_SMARTCARD_STOPBITS(hsc->Init.StopBits)))
      ||(!(IS_SMARTCARD_PARITY(hsc->Init.Parity)))  )
  {
    return HAL_ERROR;
  }

  /* Check the parameters */
  assert_param(IS_SMARTCARD_INSTANCE(hsc->Instance));
  assert_param(IS_SMARTCARD_NACK_STATE(hsc->Init.NACKState));
  assert_param(IS_SMARTCARD_PRESCALER(hsc->Init.Prescaler));

  if(hsc->State == HAL_SMARTCARD_STATE_RESET)
  {
    /* Allocate lock resource and initialize it */
    hsc->Lock = HAL_UNLOCKED;

    /* Init the low level hardware */
    HAL_SMARTCARD_MspInit(hsc);
  }

  hsc->State = HAL_SMARTCARD_STATE_BUSY;

  /* Disable the Peripheral */
  __HAL_SMARTCARD_DISABLE(hsc);

  /* Set the Prescaler */
  MODIFY_REG(hsc->Instance->GTPR, USART_GTPR_PSC, hsc->Init.Prescaler);

  /* Set the Guard Time */
  MODIFY_REG(hsc->Instance->GTPR, USART_GTPR_GT, ((hsc->Init.GuardTime)<<8));

  /* Set the Smartcard Communication parameters */
  SMARTCARD_SetConfig(hsc);

  /* In SmartCard mode, the following bits must be kept cleared:
  - LINEN bit in the USART_CR2 register
  - HDSEL and IREN bits in the USART_CR3 register.*/
  CLEAR_BIT(hsc->Instance->CR2, USART_CR2_LINEN);
  CLEAR_BIT(hsc->Instance->CR3, (USART_CR3_IREN | USART_CR3_HDSEL));

  /* Enable the Peripharal */
  __HAL_SMARTCARD_ENABLE(hsc);

  /* Configure the Smartcard NACK state */
  MODIFY_REG(hsc->Instance->CR3, USART_CR3_NACK, hsc->Init.NACKState);

  /* Enable the SC mode by setting the SCEN bit in the CR3 register */
  SET_BIT(hsc->Instance->CR3, USART_CR3_SCEN);

  /* Initialize the SMARTCARD state*/
  hsc->ErrorCode = HAL_SMARTCARD_ERROR_NONE;
  hsc->State= HAL_SMARTCARD_STATE_READY;

  return HAL_OK;
}