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

{

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

//寫入地址是每頁的第幾位

Addr = WriteAddr % I2C_PageSize;

//在開始的一頁要寫入的個數(shù)

count = I2C_PageSize - Addr;

//要寫入的頁數(shù)

NumOfPage = NumByteToWrite / I2C_PageSize;

//不足一頁的個數(shù)

NumOfSingle = NumByteToWrite % I2C_PageSize;

//EEPROM設(shè)為待命狀態(tài)

I2C_EE_WaitEepromStandbyState();

//寫入地址是頁的開始

if (Addr == 0)

{

//數(shù)據(jù)小于一頁

if (NumOfPage == 0)

{

//寫少于一頁的數(shù)據(jù)

I2C_EE_PageWrite(pBuffer, WriteAddr, NumOfSingle);

//EEPROM設(shè)為待命狀態(tài)

I2C_EE_WaitEepromStandbyState();

}

//數(shù)據(jù)大于等于一頁

else

{

while (NumOfPage--)//要寫入的頁數(shù)

{

//寫一頁的數(shù)據(jù)

I2C_EE_PageWrite(pBuffer, WriteAddr, I2C_PageSize);

//EEPROM設(shè)為待命狀態(tài)

I2C_EE_WaitEepromStandbyState();

WriteAddr += I2C_PageSize;

pBuffer += I2C_PageSize;

}

//剩余數(shù)據(jù)小于一頁

if (NumOfSingle!=0)

{

//寫少于一頁的數(shù)據(jù)

I2C_EE_PageWrite(pBuffer, WriteAddr, NumOfSingle);

//EEPROM設(shè)為待命狀態(tài)

I2C_EE_WaitEepromStandbyState();

}

}

}

//寫入地址不是頁的開始

else

{

//數(shù)據(jù)小于一頁

if (NumOfPage== 0)

{

//寫少于一頁的數(shù)據(jù)

I2C_EE_PageWrite(pBuffer, WriteAddr, NumOfSingle);

//EEPROM設(shè)為待命狀態(tài)

I2C_EE_WaitEepromStandbyState();

}

//數(shù)據(jù)大于等于一頁

else

{

NumByteToWrite -= count;

//重新計算要寫入的頁數(shù)

NumOfPage = NumByteToWrite / I2C_PageSize;

//重新計算不足一頁的個數(shù)

NumOfSingle = NumByteToWrite % I2C_PageSize;

if (count != 0)

{

//將開始的空間寫滿一頁

I2C_EE_PageWrite(pBuffer, WriteAddr, count);

//EEPROM設(shè)為待命狀態(tài)

I2C_EE_WaitEepromStandbyState();

WriteAddr += count;

pBuffer += count;

}

//要寫入的頁數(shù)

while (NumOfPage--)

{

//寫一頁的數(shù)據(jù)

I2C_EE_PageWrite(pBuffer, WriteAddr, I2C_PageSize);

//EEPROM設(shè)為待命狀態(tài)

I2C_EE_WaitEepromStandbyState();

WriteAddr += I2C_PageSize;

pBuffer += I2C_PageSize;

}

//剩余數(shù)據(jù)小于一頁

if (NumOfSingle != 0)

{

//寫少于一頁的數(shù)據(jù)

I2C_EE_PageWrite(pBuffer, WriteAddr, NumOfSingle);

//EEPROM設(shè)為待命狀態(tài)

I2C_EE_WaitEepromStandbyState();

}

}

}

}

void I2C_EE_ByteWrite(u8* pBuffer, u8 WriteAddr)

{

//產(chǎn)生 I2C2傳輸 START條件

I2C_GenerateSTART(I2C2, ENABLE);

//通過START的產(chǎn)生，確定主機模式是否成功（檢測EV5）

while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));

//發(fā)送器件地址(寫)

I2C_Send7bitAddress(I2C2, EEPROM_ADDRESS, I2C_Direction_Transmitter);

//檢測主機傳輸模式是否成功（檢測EV6）

while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));

//通過外設(shè) I2C2發(fā)送地址

I2C_SendData(I2C2, WriteAddr);

//檢測主機發(fā)送的字節(jié)是否成功(檢測EV8)

while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));

//通過外設(shè) I2C2發(fā)送數(shù)據(jù)

I2C_SendData(I2C2, *pBuffer);

//檢測主機發(fā)送的字節(jié)是否成功（檢測EV8）

while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));

//產(chǎn)生 I2C2傳輸 STOP條件

I2C_GenerateSTOP(I2C2, ENABLE);

}

void I2C_EE_PageWrite(u8* pBuffer, u8 WriteAddr, u8 NumByteToWrite)

{

//產(chǎn)生 I2C2傳輸 START條件

I2C_GenerateSTART(I2C2, ENABLE);

//通過START的產(chǎn)生，確定主機模式是否成功（檢測EV5）

while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));

//發(fā)送器件地址(寫)

I2C_Send7bitAddress(I2C2, EEPROM_ADDRESS, I2C_Direction_Transmitter);

//檢測主機傳輸模式是否成功（檢測EV6）

while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));

//通過外設(shè) I2C2發(fā)送地址

I2C_SendData(I2C2, WriteAddr);

//檢測主機發(fā)送的字節(jié)是否成功（檢測EV8）

while (! I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));

//寫數(shù)據(jù)

while (NumByteToWrite--)

{

//通過外設(shè) I2C2發(fā)送數(shù)據(jù)

I2C_SendData(I2C2, *pBuffer);

//指針++

pBuffer++;

//檢測主機發(fā)送的字節(jié)是否成功（檢測EV8）

while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));

}

//產(chǎn)生 I2C2 傳輸 STOP條件

I2C_GenerateSTOP(I2C2, ENABLE);

}

void I2C_EE_BufferRead(u8* pBuffer, u8 ReadAddr, u16 NumByteToRead)

{

//EEPROM設(shè)為待命狀態(tài)

I2C_EE_WaitEepromStandbyState();

//產(chǎn)生 I2C2傳輸 START條件

I2C_GenerateSTART(I2C2, ENABLE);

//通過START的產(chǎn)生，確定主機模式是否成功（檢測EV5）

while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));

//在一個單一的數(shù)據(jù)傳輸情況下讀取數(shù)據(jù)之前禁用的ACK

if (NumByteToRead==1)

{

I2C_AcknowledgeConfig(I2C2, DISABLE);//失能I2C2 的應(yīng)答功能

}

//向指定的從 I2C設(shè)備傳送地址字,選擇發(fā)送方向

I2C_Send7bitAddress(I2C2, EEPROM_ADDRESS, I2C_Direction_Transmitter);

//檢測主機傳輸模式是否成功（檢測EV6）

while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));

//使能I2C外設(shè)

I2C_Cmd(I2C2, ENABLE);

//通過外設(shè) I2C2發(fā)送地址

I2C_SendData(I2C2, ReadAddr);

//檢測主機發(fā)送的字節(jié)是否成功（檢測EV8）

while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));

//產(chǎn)生 I2C2 傳輸 START條件

I2C_GenerateSTART(I2C2, ENABLE);

//通過START的產(chǎn)生，確定主機模式是否成功（檢測EV5）

while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));

//向指定的從 I2C設(shè)備傳送地址字,選擇接收方向

I2C_Send7bitAddress(I2C2, EEPROM_ADDRESS, I2C_Direction_Receiver);

//檢測主機接收模式是否成功（檢測EV6）

while (!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED));

//讀取數(shù)據(jù)

while (NumByteToRead)

{

//檢測主機接收的字節(jié)是否成功（檢測EV8）

if (I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_RECEIVED))

{

if (NumByteToRead == 2)

{

//使能或者失能指定 I2C的應(yīng)答功能

I2C_AcknowledgeConfig(I2C2, DISABLE);

}

if (NumByteToRead == 1)

{

//產(chǎn)生 I2C2 傳輸 STOP條件

I2C_GenerateSTOP(I2C2, ENABLE);

}

//返回通過 I2C2最近接收的數(shù)據(jù)

*pBuffer = I2C_ReceiveData(I2C2);

//指向下個地址

pBuffer++;

NumByteToRead--;

}

}

//使能I2C2 的應(yīng)答功能

I2C_AcknowledgeConfig(I2C2, ENABLE);

}

void I2C_EE_WaitEepromStandbyState(void)

{

vu16 SR1_Tmp = 0;

do

{

//產(chǎn)生 I2C2傳輸 START條件

I2C_GenerateSTART(I2C2, ENABLE);

//讀取指定的 I2C寄存器 I2C_SR1 并返回其值

SR1_Tmp = I2C_ReadRegister(I2C2, I2C_Register_SR1);

//向指定的從 I2C設(shè)備傳送地址字 ,選擇發(fā)送方向

I2C_Send7bitAddress(I2C2, EEPROM_ADDRESS, I2C_Direction_Transmitter);

} while (!(I2C_ReadRegister(I2C2, I2C_Register_SR1) & 0x0002));//地址發(fā)送結(jié)束

//清除 I2Cx的應(yīng)答錯誤標志位

I2C_ClearFlag(I2C2, I2C_FLAG_AF);

}