am29lv160dt flash 擦除

1万 · 2010-6-23 14:43

am29lv160dt flash 擦除某一sector时怎么全片都擦除了
这是下面的代码，请高手看看有没有写错。

void flash_erase(P_U16 base_addr){

P_U16 Temp;
U32 i=35000000;

      /*  Issue the Sector Erase command to am29lv160dt  */

      Temp  = (P_U16)((0x0000555<<1)+FLASH_ADDRESS);       　　　　　　　*Temp = 0xAA;
      Temp  = (P_U16)((0x00002AA<<1)+FLASH_ADDRESS);       　　　　　　　*Temp = 0x55;
      Temp  = (P_U16)((0x0000555<<1)+FLASH_ADDRESS);
      *Temp = 0x80;
      Temp  = (P_U16)((0x0000555<<1)+FLASH_ADDRESS);
      *Temp = 0xAA;
      Temp  = (P_U16)((0x00002AA<<1)+FLASH_ADDRESS);
      *Temp = 0x55;
      Temp  = base_addr;
      *Temp = 0x30;
      while(i--);//Delay
}

只看该作者 · 2010-6-23 15:26

我用过没问题啊//--------------------------------
//Erase all data on chip
//--------------------------------
void chip_erase( void )
{
SFRPAGE = 0x0F ;
CE_H() ;
WE_H() ;
OE_H() ;
out_byte( 0xAAA, 0xAA );

out_byte( 0x555, 0x55 );

out_byte( 0xAAA, 0x80 );

out_byte( 0xAAA, 0xAA );

out_byte( 0x555, 0x55 );

out_byte( 0xAAA, 0x10 );

wait_ready1();

}

//--------------------------
//Erase a sector
//--------------------------
void sec_erase( ulong addre )
{

SFRPAGE = 0x0F ;

CE_H() ;
WE_H() ;
OE_H() ;
out_byte( 0xAAA, 0xAA );

out_byte( 0x555, 0x55 );

out_byte( 0xAAA, 0x80 );

out_byte( 0xAAA, 0xAA );

out_byte( 0x555, 0x55 );

out_byte( addre, 0x30 );

wait_ready2();

}