lpc2106 SPI loopback not working

[jayanthyk192]

Hi,

I'm trying to get the SPI on my LPC2106 to work but it doesn't.

#include <LPC210x.H>                       /* LPC21xx definitions */ 

void delay (void) 
{                        /* wait function */
  int  d;
  for (d = 0; d < 1000000; d++);           /* only to delay for LED flashes */
}


int main (void) 
{
unsigned char temp;


U0LCR=0x83;
U0DLM=1;	 //	0 for 32MHz
U0DLL=105;	 //208 for 32MHz
U0LCR=0X03;
U0FCR=1;
PINSEL0=PINSEL0 | 5;


S0SPCCR=12;  //divide by 12
S0SPCR=0x38; //Master, CPOL=CPHA=1
PINSEL0=PINSEL0 | (0x15 << 8); // Select MISO MOSI SCK functions

IODIR = IODIR | (1<<3);  //SPI CS pin for external slave select.
IOSET=IOSET|(1<<3); 

  while(1)
  {
   	S0SPDR=0X8f;
	while(!(S0SPSR & 0x80));
	U0THR=S0SPDR;
        delay();delay();delay();delay();
  }


}

I'm trying the above code i wrote. I left the SSEL pin floating, MISO and MOSI shorted. The infinite loop is running and I get data serially continuously. This data is only 0xff. So, i connected the MISO to ground and got 0x00 as data. I checked the SCK and MOSI pins, both of them are floating. I even pulled up the SSEL, but still no change.

Additional info: I tried selecting the SSEL function also. I even tried CPOL=CPHA=0.

Please help me,
Thank you.