#define FLASH_BUSY 0x0001
#define FLASH_LOCK 0x0010
void INF_Lock( void )
{
    Flash_ptr = (char *) 0x1800; // INFO-D

    __disable_interrupt();

    FCTL3 = FWKEY;                            // Clear Lock bit
    FCTL1 = FWKEY + WRT;                         // Enable byte/word write mode

    //while ( (FCTL3 & FLASH_BUSY ) != 0 );     // test busy - для RAM
    *Flash_ptr = 0xAB;

     Flash_ptr++;

     //while ( (FCTL3 & FLASH_BUSY ) != 0 );     // test busy
     *Flash_ptr = 0xCD;

     FCTL1 = FWKEY;                                 // Clear WRT bit
     FCTL3 = FWKEY + FLASH_LOCK;           // Set LOCK bit

    __enable_interrupt();

    return;
}