智能车制作

标题: flash掉电存储问题求解附程序 [打印本页]

作者: powerkoala 时间: 2011-9-24 16:31
标题: flash掉电存储问题求解附程序
#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

作者: 静静娃的秃头 时间: 2012-4-11 16:48
找了好久！！！！

作者: wan296555869 时间: 2013-3-29 22:52
我也是这样啊 LZ问题解决了吗

欢迎光临智能车制作 (http://111.231.132.190/)