为什么我改了蓝牙的调试密码还是能直接连上？

为啥我改了需要密码和原始密码之后调试助手依旧能不用输入密码直接连上啊？
还有微信小程序谷雨蓝牙也能直接连上？
怎么做才能让他们配上密码之后才能连接收发数据？

// Setup the GAP Bond Manager
  {
    uint32 passkey = 666666; // passkey "000000"
    uint8 pairMode = GAPBOND_PAIRING_MODE_WAIT_FOR_REQ;
    uint8 mitm = TRUE;
    uint8 bonding = TRUE;
    uint8 ioCap = GAPBOND_IO_CAP_KEYBOARD_ONLY;
    GAPBondMgr_SetParameter( GAPBOND_PERI_DEFAULT_PASSCODE, sizeof ( uint32 ), &passkey );
    GAPBondMgr_SetParameter( GAPBOND_PERI_PAIRING_MODE, sizeof ( uint8 ), &pairMode );
    GAPBondMgr_SetParameter( GAPBOND_PERI_MITM_PROTECtiON, sizeof ( uint8 ), &mitm );
    GAPBondMgr_SetParameter( GAPBOND_PERI_IO_CAPABILITIES, sizeof ( uint8 ), &ioCap );
    GAPBondMgr_SetParameter( GAPBOND_PERI_BONDING_ENABLED, sizeof ( uint8 ), &bonding );
  }