SPI_EEPROM INTERFACE WITH LPC2114

#include <lpc21xx.h>

void pll_init(void);
extern unsigned char rd[5];
int main()
{
	
	//INITIALIZE THE PLL AND SET CCLK = PCLK = 12Mhz
	pll_init();
	
	//SPI ROUTINES
	spi_init();
	spi_write("lucky");
}

void pll_init(void)
{
	PLLCFG  = 0X00000060;
	PLLCON  = 0X00000001;
	PLLFEED = 0X000000AA;
	PLLFEED = 0X00000055;
	
	while(!(PLLSTAT&0X00000400));
	
	PLLCON  = 0X00000003;

	PLLFEED = 0X000000AA;
	PLLFEED = 0X00000055;	 
	
	VPBDIV  = 0X09;
}
------------------------------------------------------------------
                                   SPI CODE
------------------------------------------------------------------
#include <lpc21xx.h>

#include "spi.h"

#define	READ	0x03			//	WRITE LATCH ENABLE
#define	WRITE	0x02			//	WRITE DATA (PROGRAM)
#define	WRDI	0x04			//	RESET WRITE ENABLE
#define	WREN	0x06			//	READ DATA FROM MEMORY
#define	RDSR	0x05			//	READ STATUS REGISTER
#define     WRSR       0x01			//	WRITE STATUS REGISTER
#define     SPIF	        1 << 7


unsigned char rd[5];

void spi_init(void)
{
	PINSEL0 = 0x00005500;	//	SELECTING SPI MODE
	S0SPCCR	= 0x78;			//	100KHZ
    S0SPCR  = 0x20;			//	MASTER MODE WITH 8-BITS PER TRANSFER
	//IODIR0  = 0x00000080;   //	DECLARING SSEL0 AS AN OUTPUT
}

 
unsigned char spi_tx_rx(unsigned char val)
{

	S0SPDR = val;
	while((S0SPSR & SPIF)==0);
	return S0SPDR;
	
}
 
void spi_write(unsigned char *val)
{
	spi_tx_rx(WREN);
   	spi_tx_rx(WRITE);
	spi_tx_rx(0X00);	//ADDRESS: HIGHER BYTE
	spi_tx_rx(0X00);	//ADDRESS: LOWER BYTE
	spi_tx_rx(0X00);
	while(*val)
	{
		spi_tx_rx(*val++);
	}

	wait();
}

void spi_read()
{
	int i;

	spi_tx_rx(READ);
	spi_tx_rx(0X00);	//ADDRESS: HIGHER BYTE
	spi_tx_rx(0X00);	//ADDRESS: LOWER BYTE 
	for(i=0;i<5;i++)
	{
		rd[i] = spi_tx_rx(0x00);
		wait();
	}

	
}
/*
void write(unsigned char *dataa)
{
	while(*dataa)
		spi_write(*dataa++);
}

void read(void)
{
	int i;
	spi_read();
	for(i=0;i<5;i++)
	{
		rd[i] = spi_read();
		wait();
	}
}
  */
void wait()
{
	int j;
	for(j=0;j<50000;j++);
}