.. _caf_ble_state_pm: CAF: Bluetooth state power manager module ######################################### .. contents:: :local: :depth: 2 The Bluetooth® state power manager module is a minor module that counts the number of active Bluetooth® connections and imposes a :ref:`power manager module ` power level restriction if there is at least one active connection. Configuration ************* The module is enabled by selecting :kconfig:option:`CONFIG_CAF_BLE_STATE_PM`. It depends on :kconfig:option:`CONFIG_CAF_BLE_STATE` and :kconfig:option:`CONFIG_CAF_POWER_MANAGER`. Implementation details ********************** The module reacts only to :c:struct:`ble_peer_event`. Upon the reception of the event, the module checks if the Bluetooth® peer is connected or disconnected. It then counts the active connections. Depending on the count result: * If there is at least one active connection, the power level is limited to :c:enum:`POWER_MANAGER_LEVEL_SUSPENDED`. * If there is no active connection, the limitation on power level is removed. For more information about the CAF power levels, see the :ref:`caf_power_manager` documentation page.