Help¶

When enable this option blocks notification and indications to client to conform to the following statement from the Bluetooth 5.1 specification: ‘…the server shall not send notifications and indications to such a client until it becomes change-aware.” In case the service cannot deal with sudden errors (-EAGAIN) then it shall not use this option.

Direct dependencies¶

BT_GATT_CACHING && BT_GATT_CACHING && BT_CONN && BT_HCI_HOST && BT_HCI && BT

(Includes any dependencies from ifs and menus.)

Defaults¶

No defaults. Implicitly defaults to n.

Kconfig definition¶

At subsys/bluetooth/host/Kconfig.gatt:104

Included via Kconfig:8 → Kconfig.zephyr:34 → subsys/Kconfig:9 → subsys/bluetooth/Kconfig:239 → subsys/bluetooth/host/Kconfig:507

Menu path: (Top) → Sub Systems and OS Services → Bluetooth → ATT and GATT Options → GATT Service Changed support → GATT Caching support

config BT_GATT_ENFORCE_CHANGE_UNAWARE
    bool "GATT Enforce change-unaware state"
    depends on BT_GATT_CACHING && BT_GATT_CACHING && BT_CONN && BT_HCI_HOST && BT_HCI && BT
    help
      When enable this option blocks notification and indications to client
      to conform to the following statement from the Bluetooth 5.1
      specification:
      '...the server shall not send notifications and indications to such
      a client until it becomes change-aware."
      In case the service cannot deal with sudden errors (-EAGAIN) then it
      shall not use this option.

(The ‘depends on’ condition includes propagated dependencies from ifs and menus.)