Hope the last one :)
----------------------------
BlueZ D-Bus Health API description
**********************************
Santiago Carot-Nemesio <sancane@xxxxxxxxx>
José Antonio Santos-Cadenas <santoscadenas@xxxxxxxxx>
Elvis Pfützenreuter <epx@xxxxxxxxxxx>
Health Device Profile hierarchy
===============================
Service org.bluez
Interface org.bluez.HealthAdapter
Object path [variable prefix]/{hci0,hci1,...}
Methods object CreateInstance(object path, dict config)
Returns the path for the new HealthInstance object.
The path parameter is the path of the remote object
with the callbacks to notify events (see
org.bluez.HealthAgent at the end of this document)
This petition starts an mcap instance and also register
in the SDP if is needed
Dict is defined as bellow:
{ "data_spec" : The data_spec is the data exchange
specification (see section 5.2.10 of
the specification document)
possible values:
0x00 = reserved,
0x01 [IEEE 11073-20601],
0x02..0xff reserved,
(optional)
"end_points" : [{ (optional)
"mdepid" : uint8, (optional)
"role" : ("source" or "sink"), (mandatory)
"specs" :[{ (mandatory)
"data_type" : uint16, (mandatory)
"description" : string, (optional)
}]
}]
}
if "data_spec" is not set, no SDP record will be
registered, so all the other data in the dictionary
will be ignored
Instance will be closed by the call or implicitly when
the programs leaves the bus.
Possible errors: org.bluez.Error.InvalidArguments
void CloseInstance(object path)
Closes the HDP instance identified by the object path.
Also instance will be closed if the process that started
leaves the bus. If there is a SDP record associated to
this instance it will be removed.
Possible errors: org.bluez.Error.InvalidArguments
org.bluez.Error.NotFound
--------------------------------------------------------------------------------
Service org.bluez
Interface org.bluez.HealthDevice
Object path [variable prefix]/{hci0,hci1,...}/dev_XX_XX_XX_XX_XX_XX
Methods array GetHealthInstances()
Gets the information of the remote instances present
in this device and published on its SDP record. The
returned data follows this format.
[{"id": "an instance identification as string",
"data_spec" : data spec,
"end_points":
["mdepid": uint8,
"role" : "source" or "sink" ,
"specs" : [{
"dtype" : uint16,
"description" : string, (optional)
}]
]
}];
--------------------------------------------------------------------------------
Service org.bluez
Interface org.bluez.HealthInstance
Object path [variable prefix]/{hci0,hci1,...}/{hdp0,hdp1,...}
object Connect(remote_instance_id)
Connects with the remote instance and returns its object
path. To get the session ids on a remote device, you
must run the GetHealthInstances in the HealthDevice
object.
Possible errors: org.bluez.Error.InvalidArguments
org.bluez.Error.HealthError
void Disconnect(object device, boolean cache)
Disconnect from the remote device. If chahe is false,
state will also be deleted. Otherwise, the state will be
kept for allowing future reconnections until the adapter
is removed.
Possible errors: org.bluez.Error.InvalidArguments
org.bluez.Error.NotFound
org.bluez.Error.HealthError
--------------------------------------------------------------------------------
Service org.bluez
Interface org.bluez.HealthLink
Object path [variable prefix]/{hci0,hci1,...}/{hdp0,hdp1,...}/rem_inst_id
boolean Echo(array{byte})
Sends an echo petition to the remote intance. Returns
True if response matches with the buffer sent. If some
error is detected False value is returned and the
associated MCL is closed.
uint16 OpenDataChannel(byte mdepid, byte config)
Creates a new data channel with the indicated config
to the remote MCAP Data End Point (MDEP).
The configuration should indicate the channel quality of
service. In the current version of HDP, valid values are
0x01 for reliable channels and 0x02 for streaming data
channel.
Returns the data channel id.
Possible errors: org.bluez.Error.InvalidArguments
org.bluez.Error.HealthError
array GetDataChannelFileDescriptor(uint16 mdlid)
Gets a file descriptor where data can be read or
written for receive or sent by the data channel.
Returns an array of file descriptors one for write
and other for read.
Possible errors: org.bluez.Error.InvalidArguments
org.bluez.Error.NotFound
org.bluez.Error.HealthError
void DeleteDataChannel(uint16 mdlid)
Deletes a data channel so it will not be available for
use.
Possible errors: org.bluez.Error.InvalidArguments
org.bluez.Error.NotFound
org.bluez.Error.HealthError
void DeleteAllDataChannels()
Deletes all data channels so it will not be available
for use. Typically this function is called when the
connection with the remote device will be closed
permanently
Possible errors: org.bluez.Error.HealthError
dict GetDataChannelStatus()
Return a dictionary with all the data channels that
can be used to send data right now. The dictionary
is formed like follows:
{
"reliable": [mdlid_r1, mdlid_r2, ...],
"streaming" : [mdlid_s1, mdlid_s2, ...]
}
The fist reliable data channel will always be the first
data channel in reliable array.
HealthAgent hierarchy
==================
(this object is implemented by the HDP client an receives notifications)
Service unique name
Interface org.bluez.HealthAgent
Object path freely definable
void LinkConnected(object path)
This method is called whenever a new connection
has been established over the control channel of the
current HDP instance. The object path paremeter contains
the object path of the created HealthLink.
void LinkDisconnected(object path)
This method is called when a remote device is
disconnected definitively. Any future reconnections
will fail. Also all data channels associated to this
device will be closed.
void CreatedDataChannel(object path, uint16 mdlid, byte conf)
This method is called when a new data channel is created
The path contains the object path of the HealthLink
where the new connection is created, the mdlid is the
data channel identificator and conf is the que quality
of service of the data channel (0x01 reliable, 0x02
streaming).
void DeletedDataChannel(object path, uint16 mdlid)
This method is called when a data channel is closed.
After this call the data channel will not be valid and
can be reused for future created data channels.
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