iic driver problem OK6410 wince 6.0

i am using OK6410-A....

in my code when i load the driver of iic.its is successfully loaded but
when i check for the clock at pin 2 of jp1 i dnt get any clock.
my code is

HANDLE hIIC;
BOOL bRet;

DWORD bytes;


IIC_IO_DESC IIC_Data;
UCHAR buff[2];
WCHAR Reg = 0x0000;
UCHAR Val = 0x11;

IIC_Data.SlaveAddress = 0xA1;
IIC_Data.Data = buff;
IIC_Data.Count = 2;
buff[0] = Reg;
buff[1] = Val;

bRet = DeviceIoControl(hIIC, IOCTL_IIC_WRITE,
      &IIC_Data, sizeof(IIC_IO_DESC), NULL, 0, NULL, NULL);