pic16f877a 中读内部flash写操作

只看该作者 · 2009-10-14 16:40

void MCU_Write_Flash(const u8 *ptFlash_Data, u8 Data_Length, u16 Start_Addr)
{
u8  i = 0;
u16 WriteData = 0;
if(Data_Length > 0)
{
  EECON1 = 0x84;
  GIE = 0;
  for(i=0; i<Data_Length; i++)
  {
EEADRH = (u8) (Start_Addr >> 8);
EEADR  = (u8) Start_Addr;

WriteData = *(ptFlash_Data + i);
EEDATH = (u8) (WriteData >> 8);
EEDATA = (u8) WriteData ;

EECON2 = 0x55;
EECON2 = 0xAA;
WR = 1;
asm("nop");
asm("nop"); //wait here for complete
Start_Addr++;
  }
  WREN = 0;
  GIE = 1;
}
}

const u8 name[] =  "1234567890";
const u8 cheky[] = "Cheky.Yao7";

MCU_Write_Flash(cheky,10,name);
只写入了cheky中Cheky.Ya八个字符，但少了两个，MCU_Write_Flash(cheky,12,name);时会正常。这是怎么回事啊。

只看该作者 · 2009-10-16 16:55

"Cheky.Yao7 " C语言基础不行~~~位数的问题~~~再数数几bit~~~~~~~

只看该作者 · 2009-10-16 16:56

还有你滴U8 定义滴是几位？ ===