Problem with Serial Peripheral Interface

[tkvenki]

Hi All,

I'm using a VS2000 controller. I want to test my SPI port by using the DS1305 RTC.

I'm able to open the SPI device in my controller.
Also I'm able to set the configuration.
But When I'm trying to write to the RTC i'm getting a failure.

Please find the chunk of code below:
/*******************************************************/
no_frames_to_tx =2;
no_frames_to_rx=0;
tx_buffer[0] = 0x8F;
tx_buffer[1] = 0x00;

bytes_trans = DCT_SPITransfer(hSPI[INSTANCE(0)],no_frames_to_tx/*=2*/,tx_buffer,no_frames_to_rx/*0*/,rx_buffer);
printf("Check out whether the CR is written --> %d", bytes_trans);
/*******************************************************/

In the above code what i expect is the bytes_trans variable should be 2, but I'm getting it as 0.

I'm not able to figure out the cause for it.
Please let me know the areas in which i can concentrate.
Please find the circuit diag. attached to this mail.
In the circuit diagram please note that i have not connected the CS pin to uC.

Thanking you,
Venki