读写flash.txt

msp430单片机的flash读写子程序。

MSP430读写擦除FLASH程序 
天涯过客 发表于 2005-10-28 9:22:33 


　//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;
}