flash掉电存储问题求解 附程序

powerkoala

#include <hidef.h>      /* common defines and macros */
#include <MC9S12XS128.h>     /* derivative information */
#pragma LINK_INFO DERIVATIVE "mc9s12xs128"
#define D_Addr 0x00
#define Program_Dflash  0x11
typedef unsigned char UINT8;
typedef unsigned int UINT16;
typedef  unsigned char      uchar;
typedef  unsigned int       uint;
unsigned char read[8];
uchar k;
void delay(uint j)
{
  uchar i;
  for(;j>0;j--)
  for(i=20;i>0;i--);
}
void Write_Command(uchar index,uint fcmd,uint addr)
{
  FCCOBIX = index;    //set the  conmand mode and parameter
  FCCOB = (fcmd<<8) | addr; //set the address and the data
  
}
void Pre_Start()
{
  if(FCLKDIV_FDIVLD ==0)
  FCLKDIV |= 0x50;  //设置时钟分频，外部晶振为16Mhz   

}
void Start_Command()
{
  FSTAT_CCIF = 1; //To start the command. clear the FSTAT_CCIF begin to write the lauch command
}
void Wait_Complete_Command()
{
  while(FSTAT_CCIF == 0);  //if the command is finish FSTAT_CCIF will be zero
}

void Write_D_Flash(uchar k)
{
  uint des_addr = D_Addr;
  
   
   
     Pre_Start();
   
     if(FSTAT_CCIF)
     {
      
        if(FSTAT_ACCERR)
        {
         
          FSTAT_ACCERR = 1;
          delay(100);           //似乎此处必须加延时
        }
        if(FSTAT_FPVIOL)
        {
         
          FSTAT_FPVIOL = 1;
          delay(100);
        }
        Write_Command(0x00,Program_Dflash,0x10);
        
        Write_Command(0x01,0x00,des_addr);  //0X00
  
        Write_Command(0x02,k,k);
        //Write_Command(0x03,4,8);
        //Write_Command(0x04,16,32);
        //Write_Command(0x05,64,128);

     
  
        Start_Command();
      
        Wait_Complete_Command();
      }
  
}
void ReadEeprom( uchar * srcAddr, uint destAddr, UINT16 size)
{
    EPAGE=0X00;       /* current location */   
while(size != 0)
{
        /* copy to destination */
   *(UINT16 *)srcAddr=*(UINT16 *)destAddr;
        /* next address */
  destAddr=destAddr+1;
        /* next address */
   srcAddr=srcAddr+1;
        /* one byte less */  
  size--;
}
}
  
void main(void)
{
  /* put your own code here */
  
   
   uchar read1[8]={1,2,4,8,16,32,64,128};
   DDRB=0XFF;
   
   ReadEeprom(read,0x0800,0x08);
   k=read[1];
  for(;;) {  
     
   if(k>=7)k=0;
   k++;
  PORTB=read1[k];
   delay(50000);
   delay(50000);
   delay(50000);
   Write_D_Flash(k);
  
   
   }
}


做的流水灯 但是掉电后每次都从初始位置开始 可能是没有写进去 但是读写又正常 就是不能断电存储 求解 谢谢

静静娃的秃头

找了好久！！！！

wan296555869

我也是这样啊 LZ问题解决了吗