#include "msp430x14x.h"

#define SET_FE_CS_DIR		P3DIR|=BIT0
#define SET_FE_CLK_DIR		P3DIR|=BIT3
#define SET_FE_IN_DIR		P3DIR|=BIT2
#define SET_FE_OUT_DIR		P3DIR|=BIT1

#define CLR_FE_CS_DIR		P3DIR&=~BIT0
#define CLR_FE_CLK_DIR		P3DIR&=~BIT3
#define CLR_FE_IN_DIR		P3DIR&=~BIT2
#define CLR_FE_OUT_DIR		P3DIR&=~BIT1

#define SET_FE_CS 		P3OUT|=BIT0
#define SET_FE_CLK		P3OUT|=BIT3
#define SET_FE_IN		P3OUT|=BIT2
#define SET_FE_OUT		P3OUT|=BIT1

#define CLR_FE_CS 		P3OUT&=~BIT0
#define CLR_FE_CLK		P3OUT&=~BIT3
#define CLR_FE_IN		P3OUT&=~BIT2
#define CLR_FE_OUT		P3OUT&=~BIT1

#define FE_WREN			0X06
#define FE_WRDI			0X04
#define FE_WRSR			0X01
#define FE_RDSR			0X05
#define FE_READ			0X03
#define FE_WRITE		0X02

#define READ_FE_IN    		((P3IN>>2)&0X01)

void FE_SET(void);
void FE_START(void);
void FE_END(void);
void FE_WREN1(void);
void FE_WRDI1(void);
void FE_OUT(unsigned char wData);
void FE_Writebyte1(unsigned int adr,unsigned char wByte);

void FE_WriteBlock(unsigned int adr,unsigned char *WriteData,unsigned int count);
void FE_ReadBlock(unsigned int adr,unsigned char *ReadData,unsigned int count);

unsigned char FE_IN(void);
unsigned char FE_Readbyte1(unsigned int adr,unsigned char rByte);

void FE_SET(void)
{
 SET_FE_CS_DIR;
 SET_FE_CLK_DIR;
 CLR_FE_IN_DIR;
 SET_FE_OUT_DIR;
}

void FE_START(void)
{
 SET_FE_CS;	
 CLR_FE_CLK;
 CLR_FE_CS;
}

void FE_END(void)
{
 CLR_FE_CLK;
 SET_FE_CS;	
}

void FE_WREN1(void)
{
 FE_START();
 FE_OUT(FE_WREN);
 FE_END();	
}

void FE_WRDI1(void)
{
 FE_START();
 FE_OUT(FE_WRDI);
 FE_END();	
}

unsigned char FE_IN(void)
{
 unsigned char i;
 unsigned char TempBit  = 0;
 unsigned char TempData = 0;
  
 CLR_FE_IN_DIR;
 for(i=0;i<8;i++)
 {
  SET_FE_CLK;	
  
  if (READ_FE_IN == 0x01 /*sda==1*/)
  {
      TempBit = 1;
  }
  else
  {
      TempBit = 0;
  }
  TempData = (TempData << 1) | TempBit;
  CLR_FE_CLK;
  _NOP();
  _NOP();
  
 }	
  
  return(TempData);
}

void FE_OUT(unsigned char WriteData)
{
 unsigned char i;

 SET_FE_OUT_DIR;
 for(i=0;i<8;i++)
 {
// SET_FE_CLK;	
  
  if (((WriteData >> 7) & 0x01) == 0x01)
    {
      SET_FE_OUT;
      SET_FE_CLK;
      CLR_FE_CLK;
      _NOP();
      _NOP();
    }
    else
    {
      CLR_FE_OUT;
      SET_FE_CLK;
      CLR_FE_CLK;
      _NOP();
      _NOP();
    }
    WriteData = WriteData << 1;
 } 
}


/*
void FE_Protect(void)
{
 FE_WREN();
 FE_START();
 FE_OUT(FE_WRSR);
 FE_OUT(0X01);
 FE_END();	
}
void FE_UNProtect(void)
{
 FE_WREN();
 FE_Start();
 FE_OUT(FE_WRSR);
 FE_OUT(0X02);
 FE_END();	
}
*/

void FE_Writebyte1(unsigned int adr,unsigned char wByte)
{
 unsigned char temp;
 //FE_UNProtect();
 
 FE_WREN1();
 FE_START();
 FE_OUT(FE_WRITE);
 
 temp=(unsigned char)(adr>>8);
 FE_OUT(temp);
 FE_OUT((unsigned char)(adr));
 
 FE_OUT(wByte);
 FE_END();	
 //FE_Protect();
}


unsigned char FE_Readbyte1(unsigned int adr,unsigned char rByte)
{
 unsigned char temp;
 
 	 
 FE_WREN1();
 FE_START();
 FE_OUT(FE_READ);
 
 temp=(unsigned char)(adr>>8);
 FE_OUT(temp);
 FE_OUT((unsigned char)(adr));
 
 rByte=FE_IN();
 FE_END();
 return rByte;
}

void FE_WriteBlock(unsigned int adr,unsigned char *WriteData,unsigned int count)
{
 unsigned int i;
 //FE_UNProtect();
 FE_WREN1();
 FE_START();
 FE_OUT(FE_WRITE);
 temp=(unsigned char)(adr>>8);
 FE_OUT(temp);
 FE_OUT((unsigned char)(adr));
 
 for(i=0;i<count;i++)
 {
  FE_OUT(WriteData[i]);	
 }
 FE_END();	
 //FE_Protect();
}

void FE_ReadBlock(unsigned int adr,unsigned char *ReadData,unsigned int count)
{
 unsigned int i;
 
 FE_WREN1();
 FE_START();
 FE_OUT(FE_READ);
 temp=(unsigned char)(adr>>8);
 FE_OUT(temp);
 FE_OUT((unsigned char)(adr));
 
 for(i=0;i<count;i++)
 {
  ReadData[i]=FE_IN();
 } 
 FE_END();
}

void main(void)
{

 unsigned char t,i;
 unsigned int  tt;
 float b=0.0;
 WDTCTL=WDTPW+WDTHOLD;
 //select clk
 BCSCTL1=0;
 BCSCTL2=0X88;//SELM.1+SELS
 do
 {
  IFG1&=~OFIFG;
  for(i=0xff;i>0;i++);
 }
 while((IFG1&OFIFG)!=0);
 
 //_EINT();

 P2DIR|=BIT7;
 P2OUT|=BIT7;
 
 FE_SET();
 
 tt=0x3FFF;
 t=0x80;
 FE_Writebyte1(tt,t);
 b=FE_Readbyte1(0x3FFF,t);
 
// tt=t;
 while(1)
 {
  ;
 }
 
}