Help¶

The value is a timeout used by peripheral device to wait until it starts the first connection parameters update procedure after a connection has been established. The connection parameters requested will be the parameters set by the application, or the peripheral preferred connection parameters if configured. The default value is set to 5 seconds, to comply with the Bluetooth Core specification: Core 4.2 Vol 3, Part C, 9.3.12.2: “The Peripheral device should not perform a Connection Parameter Update procedure within 5 seconds after establishing a connection.”

Direct dependencies¶

BT_CONN && BT_HCI_HOST && BT_HCI && BT

(Includes any dependencies from ifs and menus.)

Default¶

5000

Kconfig definition¶

At <Zephyr>/subsys/bluetooth/host/Kconfig:523

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:34 → <Zephyr>/subsys/Kconfig:8 → <Zephyr>/subsys/bluetooth/Kconfig:239

Menu path: (Top) → Sub Systems and OS Services → Bluetooth

config BT_CONN_PARAM_UPDATE_TIMEOUT
    int "Peripheral connection parameter update timeout in milliseconds"
    range 0 65535
    default 5000
    depends on BT_CONN && BT_HCI_HOST && BT_HCI && BT
    help
      The value is a timeout used by peripheral device to wait until it
      starts the first connection parameters update procedure after a
      connection has been established.
      The connection parameters requested will be the parameters set by the
      application, or the peripheral preferred connection parameters if
      configured.
      The default value is set to 5 seconds, to comply with the Bluetooth
      Core specification: Core 4.2 Vol 3, Part C, 9.3.12.2:
      "The Peripheral device should not perform a Connection Parameter
      Update procedure within 5 seconds after establishing a connection."

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