stm32f2xx_dcmi.c

STM32+Grlib

    /* Disable the DCMI JPEG format */
    DCMI->CR &= ~(uint32_t)DCMI_CR_JPEG;
  }
}
/**
  * @}
  */

/** @defgroup DCMI_Group2 Image capture functions
 *  @brief   Image capture functions
 *
@verbatim   
 ===============================================================================
                                 Image capture functions
 ===============================================================================  

@endverbatim
  * @{
  */
  
/**
  * @brief  Enables or disables the DCMI interface.
  * @param  NewState: new state of the DCMI interface. 
  *          This parameter can be: ENABLE or DISABLE.
  * @retval None
  */
void DCMI_Cmd(FunctionalState NewState)
{
  /* Check the parameters */
  assert_param(IS_FUNCTIONAL_STATE(NewState));
  
  if (NewState != DISABLE)
  {
    /* Enable the DCMI by setting ENABLE bit */
    DCMI->CR |= (uint32_t)DCMI_CR_ENABLE;
  }
  else
  {
    /* Disable the DCMI by clearing ENABLE bit */
    DCMI->CR &= ~(uint32_t)DCMI_CR_ENABLE;
  }
}

/**
  * @brief  Enables or disables the DCMI Capture.
  * @param  NewState: new state of the DCMI capture. 
  *          This parameter can be: ENABLE or DISABLE.
  * @retval None
  */
void DCMI_CaptureCmd(FunctionalState NewState)
{
  /* Check the parameters */
  assert_param(IS_FUNCTIONAL_STATE(NewState));
    
  if (NewState != DISABLE)
  {
    /* Enable the DCMI Capture */
    DCMI->CR |= (uint32_t)DCMI_CR_CAPTURE;
  }
  else
  {
    /* Disable the DCMI Capture */
    DCMI->CR &= ~(uint32_t)DCMI_CR_CAPTURE;
  }
}

/**
  * @brief  Reads the data stored in the DR register.
  * @param  None 
  * @retval Data register value
  */
uint32_t DCMI_ReadData(void)
{
  return DCMI->DR;
}
/**
  * @}
  */

/** @defgroup DCMI_Group3 Interrupts and flags management functions
 *  @brief   Interrupts and flags management functions
 *
@verbatim   
 ===============================================================================
                  Interrupts and flags management functions
 ===============================================================================  

@endverbatim
  * @{
  */

/**
  * @brief  Enables or disables the DCMI interface interrupts.
  * @param  DCMI_IT: specifies the DCMI interrupt sources to be enabled or disabled. 
  *          This parameter can be any combination of the following values:
  *            @arg DCMI_IT_FRAME: Frame capture complete interrupt mask
  *            @arg DCMI_IT_OVF: Overflow interrupt mask
  *            @arg DCMI_IT_ERR: Synchronization error interrupt mask
  *            @arg DCMI_IT_VSYNC: VSYNC interrupt mask
  *            @arg DCMI_IT_LINE: Line interrupt mask
  * @param  NewState: new state of the specified DCMI interrupts.
  *          This parameter can be: ENABLE or DISABLE.
  * @retval None
  */
void DCMI_ITConfig(uint16_t DCMI_IT, FunctionalState NewState)
{
  /* Check the parameters */
  assert_param(IS_DCMI_CONFIG_IT(DCMI_IT));
  assert_param(IS_FUNCTIONAL_STATE(NewState));
  
  if (NewState != DISABLE)
  {
    /* Enable the Interrupt sources */
    DCMI->IER |= DCMI_IT;
  }
  else
  {
    /* Disable the Interrupt sources */
    DCMI->IER &= (uint16_t)(~DCMI_IT);
  }  
}

/**
  * @brief  Checks whether the  DCMI interface flag is set or not.
  * @param  DCMI_FLAG: specifies the flag to check.
  *          This parameter can be one of the following values:
  *            @arg DCMI_FLAG_FRAMERI: Frame capture complete Raw flag mask
  *            @arg DCMI_FLAG_OVFRI: Overflow Raw flag mask
  *            @arg DCMI_FLAG_ERRRI: Synchronization error Raw flag mask
  *            @arg DCMI_FLAG_VSYNCRI: VSYNC Raw flag mask
  *            @arg DCMI_FLAG_LINERI: Line Raw flag mask
  *            @arg DCMI_FLAG_FRAMEMI: Frame capture complete Masked flag mask
  *            @arg DCMI_FLAG_OVFMI: Overflow Masked flag mask
  *            @arg DCMI_FLAG_ERRMI: Synchronization error Masked flag mask
  *            @arg DCMI_FLAG_VSYNCMI: VSYNC Masked flag mask
  *            @arg DCMI_FLAG_LINEMI: Line Masked flag mask
  *            @arg DCMI_FLAG_HSYNC: HSYNC flag mask
  *            @arg DCMI_FLAG_VSYNC: VSYNC flag mask
  *            @arg DCMI_FLAG_FNE: Fifo not empty flag mask
  * @retval The new state of DCMI_FLAG (SET or RESET).
  */
FlagStatus DCMI_GetFlagStatus(uint16_t DCMI_FLAG)
{
  FlagStatus bitstatus = RESET;
  uint32_t dcmireg, tempreg = 0;

  /* Check the parameters */
  assert_param(IS_DCMI_GET_FLAG(DCMI_FLAG));
  
  /* Get the DCMI register index */
  dcmireg = (((uint16_t)DCMI_FLAG) >> 12);
  
  if (dcmireg == 0x01) /* The FLAG is in RISR register */
  {
    tempreg= DCMI->RISR;
  }
  else if (dcmireg == 0x02) /* The FLAG is in SR register */
  {
    tempreg = DCMI->SR;
  }
  else /* The FLAG is in MISR register */
  {
    tempreg = DCMI->MISR;
  }
  
  if ((tempreg & DCMI_FLAG) != (uint16_t)RESET )
  {
    bitstatus = SET;
  }
  else
  {
    bitstatus = RESET;
  }
  /* Return the DCMI_FLAG status */
  return  bitstatus;
}

/**
  * @brief  Clears the DCMI's pending flags.
  * @param  DCMI_FLAG: specifies the flag to clear.
  *          This parameter can be any combination of the following values:
  *            @arg DCMI_FLAG_FRAMERI: Frame capture complete Raw flag mask
  *            @arg DCMI_FLAG_OVFRI: Overflow Raw flag mask
  *            @arg DCMI_FLAG_ERRRI: Synchronization error Raw flag mask
  *            @arg DCMI_FLAG_VSYNCRI: VSYNC Raw flag mask
  *            @arg DCMI_FLAG_LINERI: Line Raw flag mask
  * @retval None
  */
void DCMI_ClearFlag(uint16_t DCMI_FLAG)
{
  /* Check the parameters */
  assert_param(IS_DCMI_CLEAR_FLAG(DCMI_FLAG));
  
  /* Clear the flag by writing in the ICR register 1 in the corresponding 
  Flag position*/
  
  DCMI->ICR = DCMI_FLAG;
}

/**
  * @brief  Checks whether the DCMI interrupt has occurred or not.
  * @param  DCMI_IT: specifies the DCMI interrupt source to check.
  *          This parameter can be one of the following values:
  *            @arg DCMI_IT_FRAME: Frame capture complete interrupt mask
  *            @arg DCMI_IT_OVF: Overflow interrupt mask
  *            @arg DCMI_IT_ERR: Synchronization error interrupt mask
  *            @arg DCMI_IT_VSYNC: VSYNC interrupt mask
  *            @arg DCMI_IT_LINE: Line interrupt mask
  * @retval The new state of DCMI_IT (SET or RESET).
  */
ITStatus DCMI_GetITStatus(uint16_t DCMI_IT)
{
  ITStatus bitstatus = RESET;
  uint32_t itstatus = 0;
  
  /* Check the parameters */
  assert_param(IS_DCMI_GET_IT(DCMI_IT));
  
  itstatus = DCMI->MISR & DCMI_IT; /* Only masked interrupts are checked */
  
  if ((itstatus != (uint16_t)RESET))
  {
    bitstatus = SET;
  }
  else
  {
    bitstatus = RESET;
  }
  return bitstatus;
}

/**
  * @brief  Clears the DCMI's interrupt pending bits.
  * @param  DCMI_IT: specifies the DCMI interrupt pending bit to clear.
  *          This parameter can be any combination of the following values:
  *            @arg DCMI_IT_FRAME: Frame capture complete interrupt mask
  *            @arg DCMI_IT_OVF: Overflow interrupt mask
  *            @arg DCMI_IT_ERR: Synchronization error interrupt mask
  *            @arg DCMI_IT_VSYNC: VSYNC interrupt mask
  *            @arg DCMI_IT_LINE: Line interrupt mask
  * @retval None
  */
void DCMI_ClearITPendingBit(uint16_t DCMI_IT)
{
  /* Clear the interrupt pending Bit by writing in the ICR register 1 in the 
  corresponding pending Bit position*/
  
  DCMI->ICR = DCMI_IT;
}
/**
  * @}
  */ 

/**
  * @}
  */ 

/**
  * @}
  */ 

/**
  * @}
  */ 

/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/