I2C的程序中，I2C_EE_BufferWrite函数里面Addr这个变量是用来干啥的？

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王将|

楼主 | 2018-6-27 15:16 | 只看该作者回帖奖励

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ADDR, 函数, I2c, buffer, WRITE

void I2C_EE_BufferWrite(u8* pBuffer, u8 WriteAddr, u16 NumByteToWrite)

{

  u8 NumOfPage = 0, NumOfSingle = 0, Addr = 0, count = 0;

  Addr = WriteAddr % I2C_PageSize;

  count = I2C_PageSize - Addr;

  NumOfPage =  NumByteToWrite / I2C_PageSize;

  NumOfSingle = NumByteToWrite % I2C_PageSize;

  /* If WriteAddr is I2C_PageSize aligned  */

  if(Addr == 0)

  {

/* If NumByteToWrite < I2C_PageSize */

if(NumOfPage == 0)

{

   I2C_EE_PageWrite(pBuffer, WriteAddr, NumOfSingle);

   I2C_EE_WaitEepromStandbyState();

}

/* If NumByteToWrite > I2C_PageSize */

else

{

   while(NumOfPage--)

   {

      I2C_EE_PageWrite(pBuffer, WriteAddr, I2C_PageSize);

      I2C_EE_WaitEepromStandbyState();

      WriteAddr +=  I2C_PageSize;

      pBuffer += I2C_PageSize;

   }

   if(NumOfSingle!=0)

   {

      I2C_EE_PageWrite(pBuffer, WriteAddr, NumOfSingle);

      I2C_EE_WaitEepromStandbyState();

   }

}

  }

  /* If WriteAddr is not I2C_PageSize aligned  */

  else

  {

/* If NumByteToWrite < I2C_PageSize */

if(NumOfPage== 0)

{

   I2C_EE_PageWrite(pBuffer, WriteAddr, NumOfSingle);

   I2C_EE_WaitEepromStandbyState();

}

/* If NumByteToWrite > I2C_PageSize */

else

{

   NumByteToWrite -= count;

   NumOfPage =  NumByteToWrite / I2C_PageSize;

   NumOfSingle = NumByteToWrite % I2C_PageSize;



   if(count != 0)

   {

      I2C_EE_PageWrite(pBuffer, WriteAddr, count);

      I2C_EE_WaitEepromStandbyState();

      WriteAddr += count;

      pBuffer += count;

   }



   while(NumOfPage--)

   {

      I2C_EE_PageWrite(pBuffer, WriteAddr, I2C_PageSize);

      I2C_EE_WaitEepromStandbyState();

      WriteAddr +=  I2C_PageSize;

      pBuffer += I2C_PageSize;

   }

   if(NumOfSingle != 0)

   {

      I2C_EE_PageWrite(pBuffer, WriteAddr, NumOfSingle);

      I2C_EE_WaitEepromStandbyState();

   }

}

  }

}

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I2C的程序中，I2C_EE_BufferWrite函数里面Addr这个变量是用来干啥的？

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