rdflash.c

来自「里面包括很多的驱动程序的」· C语言 代码 · 共 43 行

//参数：wAddr为地址,范围0x1000~0xFFFF
void ReadFlash(U16 wAddr,U8 *bBuf,U8 bLen)
{
   while (bLen--)
     *bBuf++=*(U8 *)wAddr++;
   return;
}
void WriteFlash(U16 wAddr,U8 *bBuf,U8 bLen)
{
    U8 reg1,reg2;
    reg1=_BIC_SR(GIE);  
    reg2=IE1;IE1=0;     
    while (bLen--) {
      while (FCTL3&BUSY);
      FCTL3 = FWKEY;     
      FCTL1 =FWKEY+WRT;   
      *(U8 *)wAddr++=*bBuf
      while(FCTL3&BUSY);
      FCTL1 = FWKEY;      
      FCTL3 = FWKEY+LOCK; 
    }
     if(reg1&GIE) _BIS_SR(GIE);
     IE1=reg2;          
    return; 
}
void EraseSectorFlash(U16 wAddr)
{
    U8 reg1,reg2;
    reg1=_BIC_SR(GIE);  
    reg2=IE1;
    IE1=0;   
    while(FCTL3&BUSY);
    FCTL3 = FWKEY;  
     FCTL1 = FWKEY+ERASE;   
   *(U8 *)wAddr=0;         
    while(FCTL3&BUSY);
     FCTL1 = FWKEY;      
    FCTL3 = FWKEY+LOCK;  
    if(reg1&GIE) _BIS_SR(GIE);
         IE1=reg2;       
    return;
}