stm32f10x_fsmc.c

stm32f10xx的中文译文例程

    if(FSMC_Bank == FSMC_Bank2_NAND)
    {
      FSMC_Bank2->PCR2 &= PCR_ECCEN_Reset;
    }
    else
    {
      FSMC_Bank3->PCR3 &= PCR_ECCEN_Reset;
    }
  }
}

/*******************************************************************************
* 函数名称: FSMC_GetECC
* 功能描述: Returns the error correction code register value[返回纠错代码寄存器的值].
* 输入参数: - FSMC_Bank: specifies the FSMC Bank to be used[指定使用的FSMC体]
*                    这个参数可以是下面的值之一:
*                       - FSMC_Bank2_NAND: FSMC Bank2 NAND 
*                       - FSMC_Bank3_NAND: FSMC Bank3 NAND
* 输出参数: 无
* 返回参数: The Error Correction Code (ECC) value[纠错代码值].
*******************************************************************************/
u32 FSMC_GetECC(u32 FSMC_Bank)
{
  u32 eccval = 0x00000000;
  
  if(FSMC_Bank == FSMC_Bank2_NAND)
  {
    /* Get the ECCR2 register value [取得ECCR2寄存器值]*/
    eccval = FSMC_Bank2->ECCR2;
  }
  else
  {
    /* Get the ECCR3 register value [取得ECCR3寄存器值]*/
    eccval = FSMC_Bank3->ECCR3;
  }
  /* Return the error correction code value [返回纠错代码的值]*/
  return(eccval);
}

/*******************************************************************************
* 函数名称: FSMC_ITConfig
* 功能描述: Enables or disables the specified FSMC interrupts[使能或禁止指定的FSMC中断].
* 输入参数: (1) FSMC_Bank: specifies the FSMC Bank to be used[指定使用的FSMC体]
*                    这个参数可以是下面的值之一:
*                       - FSMC_Bank2_NAND: FSMC Bank2 NAND 
*                       - FSMC_Bank3_NAND: FSMC Bank3 NAND
*                       - FSMC_Bank4_PCCARD: FSMC Bank4 PCCARD
*           (2) FSMC_IT: specifies the FSMC interrupt sources to be
*                    enabled or disabled.[使能或禁止指定的FSMC中断源]
*                    这个参数可以是下面任何值的组合：
*                       - FSMC_IT_RisingEdge: Rising edge detection interrupt[上升沿检测中断]. 
*                       - FSMC_IT_Level: Level edge detection interrupt[下降沿检测中断].                                  
*                       - FSMC_IT_FallingEdge: Falling edge detection interrupt[电平变化检测中断].
*           (3) NewState: new state of the specified FSMC interrupts.[指定FSMC中断的新状态]
*                    This parameter can be: ENABLE or DISABLE.[这个参数可以是：ENABLE or DISABLE]
* 输出参数: 无
* 返回参数: 无
*******************************************************************************/
void FSMC_ITConfig(u32 FSMC_Bank, u32 FSMC_IT, FunctionalState NewState)
{
  assert_param(IS_FSMC_IT_BANK(FSMC_Bank));
  assert_param(IS_FSMC_IT(FSMC_IT));    
  assert_param(IS_FUNCTIONAL_STATE(NewState));
  
  if (NewState != DISABLE)
  {
    /* Enable the selected FSMC_Bank2 interrupts [使能选择的FSMC_Bank2中断]*/
    if(FSMC_Bank == FSMC_Bank2_NAND)
    {
      FSMC_Bank2->SR2 |= FSMC_IT;
    }
    /* Enable the selected FSMC_Bank3 interrupts [使能选择的FSMC_Bank3中断]*/
    else if (FSMC_Bank == FSMC_Bank3_NAND)
    {
      FSMC_Bank3->SR3 |= FSMC_IT;
    }
    /* Enable the selected FSMC_Bank4 interrupts [使能选择的FSMC_Bank4中断]*/
    else
    {
      FSMC_Bank4->SR4 |= FSMC_IT;    
    }
  }
  else
  {
    /* Disable the selected FSMC_Bank2 interrupts [禁止选择的FSMC_Bank2中断]*/
    if(FSMC_Bank == FSMC_Bank2_NAND)
    {
      
      FSMC_Bank2->SR2 &= (u32)~FSMC_IT;
    }
    /* Disable the selected FSMC_Bank3 interrupts [禁止选择的FSMC_Bank3中断]*/
    else if (FSMC_Bank == FSMC_Bank3_NAND)
    {
      FSMC_Bank3->SR3 &= (u32)~FSMC_IT;
    }
    /* Disable the selected FSMC_Bank4 interrupts [禁止选择的FSMC_Bank4中断]*/
    else
    {
      FSMC_Bank4->SR4 &= (u32)~FSMC_IT;    
    }
  }
}
                  
/*******************************************************************************
* 函数名称: FSMC_GetFlagStatus
* 功能描述: Checks whether the specified FSMC flag is set or not[检查指定的FSMC标志是否置位].
* 输入参数: - FSMC_Bank: specifies the FSMC Bank to be used[指定使用的FSMC体]
*                    这个参数可以是下面的值之一:
*                       - FSMC_Bank2_NAND: FSMC Bank2 NAND 
*                       - FSMC_Bank3_NAND: FSMC Bank3 NAND
*                       - FSMC_Bank4_PCCARD: FSMC Bank4 PCCARD
*                  - FSMC_FLAG: specifies the flag to check.[待检查的指定标志]
*                    这个参数可以是下面的值之一:
*                       - FSMC_FLAG_RisingEdge: Rising egde detection Flag.[上升沿检测标志]
*                       - FSMC_FLAG_Level: Level detection Flag.[电平检测标志]
*                       - FSMC_FLAG_FallingEdge: Falling egde detection Flag[下降沿检测标志].
*                       - FSMC_FLAG_FEMPT: Fifo empty Flag[Fifo空标志]. 
* 输出参数: 无
* 返回参数: The new state of FSMC_FLAG (SET or RESET).[指定FSMC_FLAG的新状态(SET or RESET)]
*******************************************************************************/                   
FlagStatus FSMC_GetFlagStatus(u32 FSMC_Bank, u32 FSMC_FLAG)
{
  FlagStatus bitstatus = RESET;
  u32 tmpsr = 0x00000000;
  
  /* Check the parameters [检查参数]*/
  assert_param(IS_FSMC_GETFLAG_BANK(FSMC_Bank));
  assert_param(IS_FSMC_GET_FLAG(FSMC_FLAG));
  
  if(FSMC_Bank == FSMC_Bank2_NAND)
  {
    tmpsr = FSMC_Bank2->SR2;
  }  
  else if(FSMC_Bank == FSMC_Bank3_NAND)
  {
    tmpsr = FSMC_Bank3->SR3;
  }
  /* FSMC_Bank4_PCCARD*/
  else
  {
    tmpsr = FSMC_Bank4->SR4;
  } 
  
  /* Get the flag status [取得标志状态]*/
  if ((tmpsr & FSMC_FLAG) != (u16)RESET )
  {
    bitstatus = SET;
  }
  else
  {
    bitstatus = RESET;
  }
  /* Return the flag status [返回标志状态]*/
  return bitstatus;
}

/*******************************************************************************
* 函数名称: FSMC_ClearFlag
* 功能描述: Clears the FSMC’s pending flags.[清除FSMC挂起标志]
* 输入参数: - FSMC_Bank: specifies the FSMC Bank to be used[指定使用的FSMC体]
*                    这个参数可以是下面的值之一:
*                       - FSMC_Bank2_NAND: FSMC Bank2 NAND 
*                       - FSMC_Bank3_NAND: FSMC Bank3 NAND
*                       - FSMC_Bank4_PCCARD: FSMC Bank4 PCCARD
*                  - FSMC_FLAG: specifies the flag to clear.[要清除的指定标志]
*                    这个参数可以是下面任何值的组合：
*                       - FSMC_FLAG_RisingEdge: Rising egde detection Flag.[上升沿标志]
*                       - FSMC_FLAG_Level: Level detection Flag.[电平检测标志]
*                       - FSMC_FLAG_FallingEdge: Falling egde detection Flag[下降沿标志].
* 输出参数: 无
* 返回参数: 无
*******************************************************************************/                   
void FSMC_ClearFlag(u32 FSMC_Bank, u32 FSMC_FLAG)
{
 /* Check the parameters [检查参数]*/
  assert_param(IS_FSMC_GETFLAG_BANK(FSMC_Bank));
  assert_param(IS_FSMC_CLEAR_FLAG(FSMC_FLAG)) ;
    
  if(FSMC_Bank == FSMC_Bank2_NAND)
  {
    FSMC_Bank2->SR2 &= ~FSMC_FLAG; 
  }  
  else if(FSMC_Bank == FSMC_Bank3_NAND)
  {
    FSMC_Bank3->SR3 &= ~FSMC_FLAG;
  }
  /* FSMC_Bank4_PCCARD*/
  else
  {
    FSMC_Bank4->SR4 &= ~FSMC_FLAG;
  }
}

/*******************************************************************************
* 函数名称: FSMC_GetITStatus
* 功能描述: Checks whether the specified FSMC interrupt has occurred or not[检查指定的FSMC中断是否已经发生].
* 输入参数: - FSMC_Bank: specifies the FSMC Bank to be used[指定使用的FSMC体]
*                    这个参数可以是下面的值之一:
*                       - FSMC_Bank2_NAND: FSMC Bank2 NAND 
*                       - FSMC_Bank3_NAND: FSMC Bank3 NAND
*                       - FSMC_Bank4_PCCARD: FSMC Bank4 PCCARD
*                  - FSMC_IT: specifies the FSMC interrupt source to check[要检查的指定FSMC中断源].
*                    这个参数可以是下面的值之一:
*                       - FSMC_IT_RisingEdge: Rising edge detection interrupt[上升沿中断]. 
*                       - FSMC_IT_Level: Level edge detection interrupt.[电平检测中断]                                  
*                       - FSMC_IT_FallingEdge: Falling edge detection interrupt[下降沿中断]. 
* 输出参数: 无
* 返回参数: The new state of FSMC_IT (SET or RESET).
*******************************************************************************/ 
ITStatus FSMC_GetITStatus(u32 FSMC_Bank, u32 FSMC_IT)
{
  ITStatus bitstatus = RESET;
  u32 tmpsr = 0x0, itstatus = 0x0, itenable = 0x0; 
  
  /* Check the parameters [检查参数]*/
  assert_param(IS_FSMC_IT_BANK(FSMC_Bank));
  assert_param(IS_FSMC_GET_IT(FSMC_IT));
  
  if(FSMC_Bank == FSMC_Bank2_NAND)
  {
    tmpsr = FSMC_Bank2->SR2;
  }  
  else if(FSMC_Bank == FSMC_Bank3_NAND)
  {
    tmpsr = FSMC_Bank3->SR3;
  }
  /* FSMC_Bank4_PCCARD*/
  else
  {
    tmpsr = FSMC_Bank4->SR4;
  } 
  
  itstatus = tmpsr & FSMC_IT;
  
  itenable = tmpsr & (FSMC_IT >> 3);

  if ((itstatus != (u32)RESET)  && (itenable != (u32)RESET))
  {
    bitstatus = SET;
  }
  else
  {
    bitstatus = RESET;
  }
  return bitstatus; 
}

/*******************************************************************************
* 函数名称: FSMC_ClearITPendingBit
* 功能描述: Clears the FSMC'S interrupt pending bits.[清除FSMC中断挂起位]
* 输入参数: - FSMC_Bank: specifies the FSMC Bank to be used[指定使用的FSMC体]
*                    这个参数可以是下面的值之一:
*                       - FSMC_Bank2_NAND: FSMC Bank2 NAND 
*                       - FSMC_Bank3_NAND: FSMC Bank3 NAND
*                       - FSMC_Bank4_PCCARD: FSMC Bank4 PCCARD
*                  - FSMC_IT: specifies the interrupt pending bit to clear[要清除的指定中断挂起位].
*                    这个参数可以是下面任何值的组合：
*                       - FSMC_IT_RisingEdge: Rising edge detection interrupt[上升沿中断]. 
*                       - FSMC_IT_Level: Level edge detection interrupt.[电平检测中断]                                  
*                       - FSMC_IT_FallingEdge: Falling edge detection interrupt.[下降沿中断]
* 输出参数: 无
* 返回参数: 无
*******************************************************************************/
void FSMC_ClearITPendingBit(u32 FSMC_Bank, u32 FSMC_IT)
{
  /* Check the parameters [检查参数]*/
  assert_param(IS_FSMC_IT_BANK(FSMC_Bank));
  assert_param(IS_FSMC_IT(FSMC_IT));
    
  if(FSMC_Bank == FSMC_Bank2_NAND)
  {
    FSMC_Bank2->SR2 &= ~(FSMC_IT >> 3); 
  }  
  else if(FSMC_Bank == FSMC_Bank3_NAND)
  {
    FSMC_Bank3->SR3 &= ~(FSMC_IT >> 3);
  }
  /* FSMC_Bank4_PCCARD*/
  else
  {
    FSMC_Bank4->SR4 &= ~(FSMC_IT >> 3);
  }
}

/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/