#define FLASH_START_ADDR         0x0000
#define FLASH _ADDR_UNLOCK1      0x555
#define FLASH _ADDR_UNLOCK2      0x2aa
#define FLASH _DATA_UNLOCK1      0xaaaa
#define FLASH _DATA_UNLOCK2      0x5555
#define FLASH _SETUP_WRITE       0xa0a0
#define UINT16 unsigned short
int Main()
{
  volatile UINT16 *to_add;
  to_add= (UINT16 *)0x0;
  *((volatile UINT16 *) FLASH _START_ADDR + FLASH _ADDR_UNLOCK1) =FLASH _DATA_UNLOCK1;
  *((volatile UINT16 *) FLASH _START_ADDR + FLASH _ADDR_UNLOCK2) =FLASH _DATA_UNLOCK2;
  *((volatile UINT16 *) FLASH _START_ADDR + FLASH _ADDR_UNLOCK1) =FLASH _SETUP_WRITE;
  *to_add=0x1234;
  return 0;
}