/*******************************************************************************
* Function Name : AT24CXX_Init
* Description : Initializes AT24xx EEPROM.
* Input : None
* Return : None
********************************************************************************/
void AT24CXX_Init(void)
{
IIC_Init( 100000, 0xA0);
}
/*******************************************************************************
* Function Name : AT24CXX_ReadOneByte
* Description : Read one data from EEPROM.
* Input : ReadAddr: Read frist address.
* Return : temp: Read data.
********************************************************************************/
u8 AT24CXX_ReadOneByte(u16 ReadAddr)
{
u8 temp=0;
while( I2C_GetFlagStatus( I2C1, I2C_FLAG_BUSY ) != RESET );
I2C_GenerateSTART( I2C1, ENABLE );
while( !I2C_CheckEvent( I2C1, I2C_EVENT_MASTER_MODE_SELECT ) );
I2C_Send7bitAddress( I2C1, 0XA0, I2C_Direction_Transmitter );
while( !I2C_CheckEvent( I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED ) );
#if (Address_Lenth == Address_8bit)
I2C_SendData( I2C1, (u8)(ReadAddr&0x00FF) );
while( !I2C_CheckEvent( I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED ) );
#elif (Address_Lenth == Address_16bit)
I2C_SendData( I2C1, (u8)(ReadAddr>>8) );
while( !I2C_CheckEvent( I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED ) );
I2C_SendData( I2C1, (u8)(ReadAddr&0x00FF) );
while( !I2C_CheckEvent( I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED ) );
#endif
I2C_GenerateSTART( I2C1, ENABLE );
while( !I2C_CheckEvent( I2C1, I2C_EVENT_MASTER_MODE_SELECT ) );
I2C_Send7bitAddress( I2C1, 0XA0, I2C_Direction_Receiver );
while( !I2C_CheckEvent( I2C1, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED ) );
while( I2C_GetFlagStatus( I2C1, I2C_FLAG_RXNE ) == RESET )
I2C_AcknowledgeConfig( I2C1, DISABLE );---------------改为ENABLE,不行,,
temp = I2C_ReceiveData( I2C1 );
--------------视乎这里还要添加代码,但不知如何写。。。。
I2C_GenerateSTOP( I2C1, ENABLE );
return temp;
}
------------------
哪为高手做过,给个示例代码参考。。。谢谢。