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The fact that each client can start its own discovery wasn't clear from the documentation and only becomes obvious when reading the sources.
347 lines
10 KiB
Plaintext
347 lines
10 KiB
Plaintext
BlueZ D-Bus Adapter API description
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***********************************
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Adapter hierarchy
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=================
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Service org.bluez
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Interface org.bluez.Adapter1
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Object path [variable prefix]/{hci0,hci1,...}
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Methods void StartDiscovery()
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This method starts the device discovery session. This
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includes an inquiry procedure and remote device name
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resolving. Use StopDiscovery to release the sessions
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acquired.
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This process will start creating Device objects as
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new devices are discovered.
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During discovery RSSI delta-threshold is imposed.
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Each client can request a single device discovery session
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per adapter.
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Possible errors: org.bluez.Error.NotReady
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org.bluez.Error.Failed
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org.bluez.Error.InProgress
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void StopDiscovery()
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This method will cancel any previous StartDiscovery
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transaction.
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Note that a discovery procedure is shared between all
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discovery sessions thus calling StopDiscovery will only
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release a single session and discovery will stop when
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all sessions from all clients have finished.
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Possible errors: org.bluez.Error.NotReady
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org.bluez.Error.Failed
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org.bluez.Error.NotAuthorized
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void RemoveDevice(object device)
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This removes the remote device object at the given
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path. It will remove also the pairing information.
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Possible errors: org.bluez.Error.InvalidArguments
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org.bluez.Error.Failed
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void SetDiscoveryFilter(dict filter)
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This method sets the device discovery filter for the
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caller. When this method is called with no filter
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parameter, filter is removed.
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Parameters that may be set in the filter dictionary
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include the following:
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array{string} UUIDs
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Filter by service UUIDs, empty means match
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_any_ UUID.
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When a remote device is found that advertises
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any UUID from UUIDs, it will be reported if:
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- Pathloss and RSSI are both empty.
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- only Pathloss param is set, device advertise
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TX pwer, and computed pathloss is less than
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Pathloss param.
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- only RSSI param is set, and received RSSI is
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higher than RSSI param.
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int16 RSSI
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RSSI threshold value.
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PropertiesChanged signals will be emitted
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for already existing Device objects, with
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updated RSSI value. If one or more discovery
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filters have been set, the RSSI delta-threshold,
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that is imposed by StartDiscovery by default,
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will not be applied.
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uint16 Pathloss
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Pathloss threshold value.
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PropertiesChanged signals will be emitted
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for already existing Device objects, with
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updated Pathloss value.
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string Transport (Default "auto")
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Transport parameter determines the type of
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scan.
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Possible values:
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"auto" - interleaved scan
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"bredr" - BR/EDR inquiry
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"le" - LE scan only
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If "le" or "bredr" Transport is requested,
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and the controller doesn't support it,
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org.bluez.Error.Failed error will be returned.
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If "auto" transport is requested, scan will use
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LE, BREDR, or both, depending on what's
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currently enabled on the controller.
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bool DuplicateData (Default: true)
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Disables duplicate detection of advertisement
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data.
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When enabled PropertiesChanged signals will be
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generated for either ManufacturerData and
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ServiceData everytime they are discovered.
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bool Discoverable (Default: false)
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Make adapter discoverable while discovering,
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if the adapter is already discoverable setting
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this filter won't do anything.
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string Pattern (Default: none)
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Discover devices where the pattern matches
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either the prefix of the address or
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device name which is convenient way to limited
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the number of device objects created during a
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discovery.
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When set disregards device discoverable flags.
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Note: The pattern matching is ignored if there
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are other client that don't set any pattern as
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it work as a logical OR, also setting empty
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string "" pattern will match any device found.
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When discovery filter is set, Device objects will be
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created as new devices with matching criteria are
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discovered regardless of they are connectable or
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discoverable which enables listening to
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non-connectable and non-discoverable devices.
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When multiple clients call SetDiscoveryFilter, their
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filters are internally merged, and notifications about
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new devices are sent to all clients. Therefore, each
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client must check that device updates actually match
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its filter.
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When SetDiscoveryFilter is called multiple times by the
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same client, last filter passed will be active for
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given client.
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SetDiscoveryFilter can be called before StartDiscovery.
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It is useful when client will create first discovery
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session, to ensure that proper scan will be started
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right after call to StartDiscovery.
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Possible errors: org.bluez.Error.NotReady
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org.bluez.Error.NotSupported
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org.bluez.Error.Failed
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array{string} GetDiscoveryFilters()
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Return available filters that can be given to
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SetDiscoveryFilter.
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Possible errors: None
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object ConnectDevice(dict properties) [experimental]
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This method connects to device without need of
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performing General Discovery. Connection mechanism is
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similar to Connect method from Device1 interface with
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exception that this method returns success when physical
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connection is established. After this method returns,
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services discovery will continue and any supported
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profile will be connected. There is no need for calling
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Connect on Device1 after this call. If connection was
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successful this method returns object path to created
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device object.
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Parameters that may be set in the filter dictionary
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include the following:
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string Address
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The Bluetooth device address of the remote
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device. This parameter is mandatory.
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string AddressType
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The Bluetooth device Address Type. This is
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address type that should be used for initial
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connection. If this parameter is not present
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BR/EDR device is created.
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Possible values:
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"public" - Public address
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"random" - Random address
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Possible errors: org.bluez.Error.InvalidArguments
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org.bluez.Error.AlreadyExists
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org.bluez.Error.NotSupported
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org.bluez.Error.NotReady
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org.bluez.Error.Failed
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Properties string Address [readonly]
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The Bluetooth device address.
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string AddressType [readonly]
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The Bluetooth Address Type. For dual-mode and BR/EDR
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only adapter this defaults to "public". Single mode LE
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adapters may have either value. With privacy enabled
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this contains type of Identity Address and not type of
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address used for connection.
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Possible values:
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"public" - Public address
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"random" - Random address
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string Name [readonly]
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The Bluetooth system name (pretty hostname).
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This property is either a static system default
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or controlled by an external daemon providing
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access to the pretty hostname configuration.
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string Alias [readwrite]
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The Bluetooth friendly name. This value can be
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changed.
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In case no alias is set, it will return the system
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provided name. Setting an empty string as alias will
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convert it back to the system provided name.
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When resetting the alias with an empty string, the
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property will default back to system name.
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On a well configured system, this property never
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needs to be changed since it defaults to the system
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name and provides the pretty hostname. Only if the
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local name needs to be different from the pretty
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hostname, this property should be used as last
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resort.
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uint32 Class [readonly]
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The Bluetooth class of device.
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This property represents the value that is either
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automatically configured by DMI/ACPI information
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or provided as static configuration.
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boolean Powered [readwrite]
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Switch an adapter on or off. This will also set the
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appropriate connectable state of the controller.
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The value of this property is not persistent. After
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restart or unplugging of the adapter it will reset
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back to false.
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boolean Discoverable [readwrite]
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Switch an adapter to discoverable or non-discoverable
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to either make it visible or hide it. This is a global
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setting and should only be used by the settings
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application.
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If the DiscoverableTimeout is set to a non-zero
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value then the system will set this value back to
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false after the timer expired.
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In case the adapter is switched off, setting this
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value will fail.
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When changing the Powered property the new state of
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this property will be updated via a PropertiesChanged
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signal.
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For any new adapter this settings defaults to false.
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boolean Pairable [readwrite]
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Switch an adapter to pairable or non-pairable. This is
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a global setting and should only be used by the
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settings application.
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Note that this property only affects incoming pairing
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requests.
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For any new adapter this settings defaults to true.
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uint32 PairableTimeout [readwrite]
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The pairable timeout in seconds. A value of zero
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means that the timeout is disabled and it will stay in
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pairable mode forever.
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The default value for pairable timeout should be
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disabled (value 0).
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uint32 DiscoverableTimeout [readwrite]
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The discoverable timeout in seconds. A value of zero
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means that the timeout is disabled and it will stay in
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discoverable/limited mode forever.
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The default value for the discoverable timeout should
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be 180 seconds (3 minutes).
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boolean Discovering [readonly]
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Indicates that a device discovery procedure is active.
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array{string} UUIDs [readonly]
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List of 128-bit UUIDs that represents the available
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local services.
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string Modalias [readonly, optional]
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Local Device ID information in modalias format
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used by the kernel and udev.
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array{string} Roles [readonly]
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List of supported roles. Possible values:
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"central": Supports the central role.
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"peripheral": Supports the peripheral role.
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"central-peripheral": Supports both roles
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concurrently.
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array{string} ExperimentalFeatures [readonly, optional]
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List of 128-bit UUIDs that represents the experimental
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features currently enabled.
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