k9f5608u0b.txt

NAND FLASH的读写程序（注意片选） FLASH是K9F5608U0B,32M

NAND FLASH的读写程序（注意片选）

FLASH是K9F5608U0B,32M
#include<INIT_REG.H>
#define FLASH_MD1 0xeff0 //chip enable nand flash 1
#define FLASH_MD2 0xfff0 //chip enable nand flash 2
#define FLASH_MA1 0xeff2 //enable address nand flash 1
#define FLASH_MA2 0xfff2 //enable address flash 2
#define FLASH_MC1 0xeff1 //enable command nand flash 1
#define FLASH_MC2 0xfff1 //enable command nand flash 2
#define read_id 0x90
void read_flash_id(void);
void page_write_flash(unsigned char addrlow,addrmid,addrhigh);
void read_flash(unsigned char addrlow,addrmid,addrhigh);
void delay();
void flash_reset();
void main(void)
{
  unsigned char i=0,j=0;
  init_snd1();     
  flash_reset();
  read_flash_id();
  page_write_flash(0x0,0x0,0x0);
  read_flash(0x0,0x0,0x0);
  while(1);
}
void flash_reset()
{
  unsigned char xdata *xaddress;
  xaddress=FLASH_MC1;
  *xaddress=0xff;
  delay();
  
}
void read_flash_id(void) // 串口输出ID码
{
  unsigned char xdata *xaddress;
  unsigned char x,y;
  xaddress=FLASH_MC1;
  *xaddress=read_id;
  xaddress=FLASH_MA1;
  *xaddress=0x00;
  xaddress=FLASH_MD1;
  x=*xaddress;
  printf(x);
  y=*xaddress;
  printf(y);
}
void page_write_flash(unsigned char addrlow,addrmid,addrhigh)
{
  unsigned char xdata *buff;
  unsigned char temp;
  unsigned int i;
  //erase flash block
  buff=FLASH_MC1;
  *buff=0x60;
  buff=FLASH_MA1;
  *buff=addrmid;
  *buff=addrhigh;
  buff=FLASH_MC1;
  *buff=0xd0; 
  delay();
  do{
  buff=FLASH_MC1;
  *buff=0x70; 
  buff=FLASH_MD1;
  temp=*buff;
  printf(temp);
  temp=temp&0x01;
  }
  while(temp!=0x00);
  //while(1);
  //erase sucessfull
  //write one page data
  buff=FLASH_MC1;
  *buff=0x80;
  buff=FLASH_MA1;
  *buff=addrlow;
  *buff=addrmid;
  *buff=addrhigh;
  buff=FLASH_MD1;
  for(i=0;i<512;i++)
  {
    
    *buff=i;
    printf(i);
  }
  buff=FLASH_MC1;
  *buff=0x10; 
  delay();
  do{
  buff=FLASH_MC1;
  *buff=0x70; 
  buff=FLASH_MD1;
  temp=*buff;
  printf(temp);
  temp=temp&0x41;
  }
  while(temp!=0x40);
}
void read_flash(unsigned char addrlow,addrmid,addrhigh)
{
  unsigned char xdata *source;
  unsigned int i,temp;
  source=FLASH_MC1;
  *source=0x00;
  source=FLASH_MA1;
  *source=addrlow;
  *source=addrmid;
  *source=addrhigh;
  delay();
  do{
  source=FLASH_MC1;
  *source=0x70; 
  source=FLASH_MD1;
  temp=*source;
  printf(temp);
  temp=temp&0x40;
  }
  while(temp!=0x40);
  source=FLASH_MD1;
  i=512;
  while((i--)>0)
  {
  temp=*source;
  printf(temp);
  }
}
void delay()
{
  unsigned int temp;
  for (temp=0; temp<3000;temp++) ;
}