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标题: flash读写问题复位丢失 [打印本页]

作者: powerkoala 时间: 2011-9-24 15:36
标题: flash读写问题复位丢失
#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 |= 0x0f;  //设置时钟分频，外部晶振为8Mhz


}

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()
{

  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(0x01,0x01,des_addr);  //0X00

      Write_Command(0x02,1,2);
      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 */

DDRB=0XFF;
Write_D_Flash();
ReadEeprom(read,0x0900,0x08);

for(;;)

{

for(k=0;k<8;k++) {

PORTB=read[k];
delay(50000);
delay(50000);

}

} /* wait forever */
  /* please make sure that you never leave this function */
}

这是写的程序调试时可用但是一旦把读操作注释掉只执行写入时数据就全没了就解答谢谢

作者: powerkoala 时间: 2011-9-24 16:21
表达可能没清楚
main函数里这样写可能会好一点
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);
Write_D_Flash(k);

} /* wait forever */
  /* please make sure that you never leave this function */
}

作者: bubian 时间: 2014-5-3 22:07
我的为什么最多只能储存13个数据的

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