void SaveToFlash(void)
{                
  char *FlashPtr;
  char *mem_ptr;
  int kk;
  mem_ptr = (char *)&stflash_Data;
    _DINT();
    FlashPtr = (char*) flash_A;    // Initialize Flash_A pointer  
    
    FCTL1 = FWKEY + ERASE;                // Set Erase bit
    FCTL3 = FWKEY;                        // Clear Lock bit
    *FlashPtr = 0;                       // Dummy write to erase Flash segment
    FCTL1 = FWKEY + WRT;                  // Set WRT bit for write operation    
    ...
    // Write Something Data To Flash
    ...
    FCTL1 = FWKEY;                          // Clear WRT bit
    FCTL3 = FWKEY + LOCK;                   // Reset LOCK bit    
    _EINT();
}