code of BQ34Z100 communication with I2C

u8 ReadData(u8 command)  
{                   
	u8 temp=0;                                                                                   

	IIC_Start();
	
	IIC_Send_Byte(0xaa); 
	IIC_Wait_Ack();
	
	IIC_Send_Byte(command);  

	
	SDA_OUT();     
	IIC_SCL=0;
	IIC_SDA=1;
 	Delay_us(100);
	
	IIC_Start();               
	IIC_Send_Byte(0xab); 
	
	SDA_OUT();
	IIC_SCL=0;
	IIC_SDA=0;

	Delay_us(140);
	temp=IIC_Read_Byte(0); 

	IIC_Stop();
	 
	return temp;  
} 

void WriteData(u8 command, u8 DataToWrite)  
{                                                                                              
	IIC_Start();    
	IIC_Send_Byte(0xaa);  
	IIC_Wait_Ack();

	IIC_Send_Byte(command);  
	IIC_Wait_Ack();                                                          
	SDA_OUT();    
	IIC_SCL=0;
	IIC_SDA=1;
 	Delay_us(100);
	
	IIC_Send_Byte(DataToWrite);   
	SDA_OUT();     
	IIC_SCL=0;
	IIC_SDA=1;
 	Delay_us(140);
	
	IIC_Wait_Ack();
	IIC_Stop();  
	Delay_ms(1);       
}

int main(void)
{
        u8 data[2] ;
	while(1)
	{
		WriteData(0x00,0x08);	
		Delay_ms(1);
		WriteData(0x01,0x00);
		Delay_ms(1);
		data[0] = ReadData(0x00) ;
		Delay_ms(1);
		data[1] = ReadData(0x01) ;
		Delay_ms(10);
		printf("data0: 0x%x ,  data1: 0x%x \r\n",data[0],data[1]);

	}
}

I read the pdf "bq34z100 DF access pictures.pdf" which Tom Provide , and so I Write the code ,but I cann't get 0x04 and 0x08 ,there's something wrong with the code , so can anyone show it to me ?