Ic2 programming interfacing DS895450

Hi,
This programing is to Start I2c Communication with the basic start up code followed by sending a 8 bit address together with a write bit. Next, it will send a string a serial port to show a string "nack" only if the SDA is not pulled low, which means not acknowledged.

Chip used: Dallas DS89C450 11.0592Mhz
Accelerometer: SEN 10955 2.25 Mhz

Problem faced: SDA could not be pulled low. Nack received.

Question: May i know is there any faults in this program?

#include <DS89C4XX.h>     //DS89C450 Microcontroller
#include <intrins.h>      //_nop_() function

sbit SDA=P1^0;
sbit SCL=P1^1;
//--------------------------Transmit----------------------------------
void Uart_Tx2(unsigned char c)
{
        while (TI_0==0);
        TI_0=0;
        SBUF0=c;
}

// ----------------------Transmit string ------------------------------------------------------
void sendstring (char *String)
{
        int i=0;        //set counter to 0
        while(String[i])
        {
                Uart_Tx2(String[i++]);
        }

}


//-------------------------------Delay -----------------------------------------
void I2CBitDly()   // wait approximately 4.7uS
{ // tune to xtal. This works at 11.0592MHz
unsigned int time_end = 9;
unsigned int index;
for (index = 0; index < time_end; index++);
return;
}


//-------------------------------------------Start--------------------------
void I2CSendStart(void)
{
SDA = 1;
I2CBitDly();
SCL = 1;
I2CBitDly();
SDA = 0;
I2CBitDly();
SCL = 0;
I2CBitDly();
}

//-------------------------------------------STOP-----------------------------
void I2CSendStop(void)
{
SDA = 0;
I2CBitDly();
SCL = 1;
I2CBitDly();
SDA = 1;
I2CBitDly();
}

//-----------------------------------------SEND data---------------------------
void I2CSendByte(unsigned char bt)
{
register unsigned char i;
for (i=0; i<8; i++)
{
if ((bt<<i)&0x80) SDA = 1; // Send each bit
else SDA = 0;

SCL = 1;
I2CBitDly();
SCL = 0;
I2CBitDly();

}
SDA = 1; // make P1.0 an input.
I2CBitDly();
SCL = 1;        // 9th clock high.
I2CBitDly();


if (SDA == 1) //
{
        sendstring("nack");             // SDA is not pulled low. nack is sent.

}
   SCL = 0;


I2CBitDly();
//SDA = 1; // end transmission
SCL = 1;
}



//---------------MAIN---------------------------------
void main ()
{

         SCON1  = 0x52;
         SCON0 = 0x52;
         TMOD  = 0x20;
         TCON  = 0x69;
         TH1   = 0xFD;  //Buad Rate: 9600 bps



         I2CSendStart();
         I2CSendByte(0x38);

   while(1)
   {

   };
}