if ((GPIOx->ODR & GPIO_Pin) != (uint32_t)Bit_RESET)
  {
    bitstatus = (uint8_t)Bit_SET;
  }
  else
  {
    bitstatus = (uint8_t)Bit_RESET;
  }
  return bitstatus;
}

/**
  * @brief  Reads the specified GPIO output data port.
  * @param  GPIOx: where x can be (A..G) to select the GPIO peripheral.
  * @retval GPIO output data port value.
  */
uint16_t GPIO_ReadOutputData(GPIO_TypeDef* GPIOx)
{
  /* Check the parameters */
  assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
    
  return ((uint16_t)GPIOx->ODR);
}

/**
  * @brief  Sets the selected data port bits.
  * @param  GPIOx: where x can be (A..G) to select the GPIO peripheral.
  * @param  GPIO_Pin: specifies the port bits to be written.
  *   This parameter can be any combination of GPIO_Pin_x where x can be (0..15).
  * @retval None
  */
void GPIO_SetBits(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
{
  /* Check the parameters */
  assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
  assert_param(IS_GPIO_PIN(GPIO_Pin));
  
  GPIOx->BSRR = GPIO_Pin;
}

/**
  * @brief  Clears the selected data port bits.
  * @param  GPIOx: where x can be (A..G) to select the GPIO peripheral.
  * @param  GPIO_Pin: specifies the port bits to be written.
  *   This parameter can be any combination of GPIO_Pin_x where x can be (0..15).
  * @retval None
  */
void GPIO_ResetBits(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
{
  /* Check the parameters */
  assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
  assert_param(IS_GPIO_PIN(GPIO_Pin));
  
  GPIOx->BRR = GPIO_Pin;
}

/**
  * @brief  Sets or clears the selected data port bit.
  * @param  GPIOx: where x can be (A..G) to select the GPIO peripheral.
  * @param  GPIO_Pin: specifies the port bit to be written.
  *   This parameter can be one of GPIO_Pin_x where x can be (0..15).
  * @param  BitVal: specifies the value to be written to the selected bit.
  *   This parameter can be one of the BitAction enum values:
  *     @arg Bit_RESET: to clear the port pin
  *     @arg Bit_SET: to set the port pin
  * @retval None
  */
void GPIO_WriteBit(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin, BitAction BitVal)
{
  /* Check the parameters */
  assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
  assert_param(IS_GET_GPIO_PIN(GPIO_Pin));
  assert_param(IS_GPIO_BIT_ACTION(BitVal)); 
  
  if (BitVal != Bit_RESET)
  {
    GPIOx->BSRR = GPIO_Pin;
  }
  else
  {
    GPIOx->BRR = GPIO_Pin;
  }
}

/**
  * @brief  Writes data to the specified GPIO data port.
  * @param  GPIOx: where x can be (A..G) to select the GPIO peripheral.
  * @param  PortVal: specifies the value to be written to the port output data register.
  * @retval None
  */
void GPIO_Write(GPIO_TypeDef* GPIOx, uint16_t PortVal)
{
  /* Check the parameters */
  assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
  
  GPIOx->ODR = PortVal;
}

/**
  * @brief  Locks GPIO Pins configuration registers.
  * @param  GPIOx: where x can be (A..G) to select the GPIO peripheral.
  * @param  GPIO_Pin: specifies the port bit to be written.
  *   This parameter can be any combination of GPIO_Pin_x where x can be (0..15).
  * @retval None
  */
void GPIO_PinLockConfig(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
{
  uint32_t tmp = 0x00010000;
  
  /* Check the parameters */
  assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
  assert_param(IS_GPIO_PIN(GPIO_Pin));
  
  tmp |= GPIO_Pin;
  /* Set LCKK bit */
  GPIOx->LCKR = tmp;
  /* Reset LCKK bit */
  GPIOx->LCKR =  GPIO_Pin;
  /* Set LCKK bit */
  GPIOx->LCKR = tmp;
  /* Read LCKK bit*/
  tmp = GPIOx->LCKR;
  /* Read LCKK bit*/
  tmp = GPIOx->LCKR;
}

/**
  * @brief  Selects the GPIO pin used as Event output.
  * @param  GPIO_PortSource: selects the GPIO port to be used as source
  *   for Event output.
  *   This parameter can be GPIO_PortSourceGPIOx where x can be (A..E).
  * @param  GPIO_PinSource: specifies the pin for the Event output.
  *   This parameter can be GPIO_PinSourcex where x can be (0..15).
  * @retval None
  */
void GPIO_EventOutputConfig(uint8_t GPIO_PortSource, uint8_t GPIO_PinSource)
{
  uint32_t tmpreg = 0x00;
  /* Check the parameters */
  assert_param(IS_GPIO_EVENTOUT_PORT_SOURCE(GPIO_PortSource));
  assert_param(IS_GPIO_PIN_SOURCE(GPIO_PinSource));
    
  tmpreg = AFIO->EVCR;
  /* Clear the PORT[6:4] and PIN[3:0] bits */
  tmpreg &= EVCR_PORTPINCONFIG_MASK;
  tmpreg |= (uint32_t)GPIO_PortSource << 0x04;
  tmpreg |= GPIO_PinSource;
  AFIO->EVCR = tmpreg;
}

/**
  * @brief  Enables or disables the Event Output.
  * @param  NewState: new state of the Event output.
  *   This parameter can be: ENABLE or DISABLE.
  * @retval None
  */
void GPIO_EventOutputCmd(FunctionalState NewState)
{
  /* Check the parameters */
  assert_param(IS_FUNCTIONAL_STATE(NewState));
  
  *(__IO uint32_t *) EVCR_EVOE_BB = (uint32_t)NewState;
}

/**
  * @brief  Changes the mapping of the specified pin.
  * @param  GPIO_Remap: selects the pin to remap.
  *   This parameter can be one of the following values:
  *     @arg GPIO_Remap_SPI1             : SPI1 Alternate Function mapping
  *     @arg GPIO_Remap_I2C1             : I2C1 Alternate Function mapping
  *     @arg GPIO_Remap_USART1           : USART1 Alternate Function mapping
  *     @arg GPIO_Remap_USART2           : USART2 Alternate Function mapping
  *     @arg GPIO_PartialRemap_USART3    : USART3 Partial Alternate Function mapping
  *     @arg GPIO_FullRemap_USART3       : USART3 Full Alternate Function mapping
  *     @arg GPIO_PartialRemap_TIM1      : TIM1 Partial Alternate Function mapping
  *     @arg GPIO_FullRemap_TIM1         : TIM1 Full Alternate Function mapping
  *     @arg GPIO_PartialRemap1_TIM2     : TIM2 Partial1 Alternate Function mapping
  *     @arg GPIO_PartialRemap2_TIM2     : TIM2 Partial2 Alternate Function mapping
  *     @arg GPIO_FullRemap_TIM2         : TIM2 Full Alternate Function mapping
  *     @arg GPIO_PartialRemap_TIM3      : TIM3 Partial Alternate Function mapping
  *     @arg GPIO_FullRemap_TIM3         : TIM3 Full Alternate Function mapping
  *     @arg GPIO_Remap_TIM4             : TIM4 Alternate Function mapping
  *     @arg GPIO_Remap1_CAN1            : CAN1 Alternate Function mapping
  *     @arg GPIO_Remap2_CAN1            : CAN1 Alternate Function mapping
  *     @arg GPIO_Remap_PD01             : PD01 Alternate Function mapping
  *     @arg GPIO_Remap_TIM5CH4_LSI      : LSI connected to TIM5 Channel4 input capture for calibration
  *     @arg GPIO_Remap_ADC1_ETRGINJ     : ADC1 External Trigger Injected Conversion remapping
  *     @arg GPIO_Remap_ADC1_ETRGREG     : ADC1 External Trigger Regular Conversion remapping
  *     @arg GPIO_Remap_ADC2_ETRGINJ     : ADC2 External Trigger Injected Conversion remapping
  *     @arg GPIO_Remap_ADC2_ETRGREG     : ADC2 External Trigger Regular Conversion remapping
  *     @arg GPIO_Remap_ETH              : Ethernet remapping (only for Connectivity line devices)
  *     @arg GPIO_Remap_CAN2             : CAN2 remapping (only for Connectivity line devices)
  *     @arg GPIO_Remap_SWJ_NoJTRST      : Full SWJ Enabled (JTAG-DP + SW-DP) but without JTRST
  *     @arg GPIO_Remap_SWJ_JTAGDisable  : JTAG-DP Disabled and SW-DP Enabled
  *     @arg GPIO_Remap_SWJ_Disable      : Full SWJ Disabled (JTAG-DP + SW-DP)
  *     @arg GPIO_Remap_SPI3             : SPI3/I2S3 Alternate Function mapping (only for Connectivity line devices)
  *                                        When the SPI3/I2S3 is remapped using this function, the SWJ is configured
  *                                        to Full SWJ Enabled (JTAG-DP + SW-DP) but without JTRST.   
  *     @arg GPIO_Remap_TIM2ITR1_PTP_SOF : Ethernet PTP output or USB OTG SOF (Start of Frame) connected
  *                                        to TIM2 Internal Trigger 1 for calibration (only for Connectivity line devices)
  *                                        If the GPIO_Remap_TIM2ITR1_PTP_SOF is enabled the TIM2 ITR1 is connected to 
  *                                        Ethernet PTP output. When Reset TIM2 ITR1 is connected to USB OTG SOF output.    
  *     @arg GPIO_Remap_PTP_PPS          : Ethernet MAC PPS_PTS output on PB05 (only for Connectivity line devices)
  *     @arg GPIO_Remap_TIM15            : TIM15 Alternate Function mapping (only for Value line devices)
  *     @arg GPIO_Remap_TIM16            : TIM16 Alternate Function mapping (only for Value line devices)
  *     @arg GPIO_Remap_TIM17            : TIM17 Alternate Function mapping (only for Value line devices)
  *     @arg GPIO_Remap_CEC              : CEC Alternate Function mapping (only for Value line devices)
  *     @arg GPIO_Remap_TIM1_DMA         : TIM1 DMA requests mapping (only for Value line devices)
  *     @arg GPIO_Remap_TIM9             : TIM9 Alternate Function mapping (only for XL-density devices)
  *     @arg GPIO_Remap_TIM10            : TIM10 Alternate Function mapping (only for XL-density devices)
  *     @arg GPIO_Remap_TIM11            : TIM11 Alternate Function mapping (only for XL-density devices)
  *     @arg GPIO_Remap_TIM13            : TIM13 Alternate Function mapping (only for High density Value line and XL-density devices)
  *     @arg GPIO_Remap_TIM14            : TIM14 Alternate Function mapping (only for High density Value line and XL-density devices)
  *     @arg GPIO_Remap_FSMC_NADV        : FSMC_NADV Alternate Function mapping (only for High density Value line and XL-density devices)
  *     @arg GPIO_Remap_TIM67_DAC_DMA    : TIM6/TIM7 and DAC DMA requests remapping (only for High density Value line devices)
  *     @arg GPIO_Remap_TIM12            : TIM12 Alternate Function mapping (only for High density Value line devices)
  *     @arg GPIO_Remap_MISC             : Miscellaneous Remap (DMA2 Channel5 Position and DAC Trigger remapping, 
  *                                        only for High density Value line devices)     
  * @param  NewState: new state of the port pin remapping.
  *   This parameter can be: ENABLE or DISABLE.
  * @retval None
  */
void GPIO_PinRemapConfig(uint32_t GPIO_Remap, FunctionalState NewState)
{
  uint32_t tmp = 0x00, tmp1 = 0x00, tmpreg = 0x00, tmpmask = 0x00;

  /* Check the parameters */
  assert_param(IS_GPIO_REMAP(GPIO_Remap));
  assert_param(IS_FUNCTIONAL_STATE(NewState));  
  
  if((GPIO_Remap & 0x80000000) == 0x80000000)
  {
    tmpreg = AFIO->MAPR2;
  }
  else
  {
    tmpreg = AFIO->MAPR;
  }

  tmpmask = (GPIO_Remap & DBGAFR_POSITION_MASK) >> 0x10;
  tmp = GPIO_Remap & LSB_MASK;

  if ((GPIO_Remap & (DBGAFR_LOCATION_MASK | DBGAFR_NUMBITS_MASK)) == (DBGAFR_LOCATION_MASK | DBGAFR_NUMBITS_MASK))
  {
    tmpreg &= DBGAFR_SWJCFG_MASK;
    AFIO->MAPR &= DBGAFR_SWJCFG_MASK;
  }
  else if ((GPIO_Remap & DBGAFR_NUMBITS_MASK) == DBGAFR_NUMBITS_MASK)
  {
    tmp1 = ((uint32_t)0x03) << tmpmask;
    tmpreg &= ~tmp1;
    tmpreg |= ~DBGAFR_SWJCFG_MASK;
  }
  else
  {
    tmpreg &= ~(tmp << ((GPIO_Remap >> 0x15)*0x10));
    tmpreg |= ~DBGAFR_SWJCFG_MASK;
  }

  if (NewState != DISABLE)
  {
    tmpreg |= (tmp << ((GPIO_Remap >> 0x15)*0x10));
  }

  if((GPIO_Remap & 0x80000000) == 0x80000000)
  {
    AFIO->MAPR2 = tmpreg;
  }
  else
  {
    AFIO->MAPR = tmpreg;
  }  
}

/**
  * @brief  Selects the GPIO pin used as EXTI Line.
  * @param  GPIO_PortSource: selects the GPIO port to be used as source for EXTI lines.
  *   This parameter can be GPIO_PortSourceGPIOx where x can be (A..G).
  * @param  GPIO_PinSource: specifies the EXTI line to be configured.
  *   This parameter can be GPIO_PinSourcex where x can be (0..15).
  * @retval None
  */
void GPIO_EXTILineConfig(uint8_t GPIO_PortSource, uint8_t GPIO_PinSource)
{
  uint32_t tmp = 0x00;
  /* Check the parameters */
  assert_param(IS_GPIO_EXTI_PORT_SOURCE(GPIO_PortSource));
  assert_param(IS_GPIO_PIN_SOURCE(GPIO_PinSource));
  
  tmp = ((uint32_t)0x0F) << (0x04 * (GPIO_PinSource & (uint8_t)0x03));
  AFIO->EXTICR[GPIO_PinSource >> 0x02] &= ~tmp;
  AFIO->EXTICR[GPIO_PinSource >> 0x02] |= (((uint32_t)GPIO_PortSource) << (0x04 * (GPIO_PinSource & (uint8_t)0x03)));
}

/**
  * @brief  Selects the Ethernet media interface.
  * @note   This function applies only to STM32 Connectivity line devices.  
  * @param  GPIO_ETH_MediaInterface: specifies the Media Interface mode.
  *   This parameter can be one of the following values:
  *     @arg GPIO_ETH_MediaInterface_MII: MII mode
  *     @arg GPIO_ETH_MediaInterface_RMII: RMII mode    
  * @retval None
  */
void GPIO_ETH_MediaInterfaceConfig(uint32_t GPIO_ETH_MediaInterface) 
{ 
  assert_param(IS_GPIO_ETH_MEDIA_INTERFACE(GPIO_ETH_MediaInterface)); 

  /* Configure MII_RMII selection bit */ 
  *(__IO uint32_t *) MAPR_MII_RMII_SEL_BB = GPIO_ETH_MediaInterface; 
}
  
/**
  * @}
  */

/**
  * @}
  */

/**
  * @}
  */

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