CONFIG_BT_GATT_ENFORCE_CHANGE_UNAWARE

GATT Enforce change-unaware state

Type: bool

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 <Subsystem>/bluetooth/host/Kconfig.gatt:111

Included via Kconfig:8 → Kconfig.zephyr:44 → <Subsystem>/Kconfig:9 → <Subsystem>/bluetooth/Kconfig:180 → <Subsystem>/bluetooth/host/Kconfig:443

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.)