Android HAL protocol for Bluetooth ================================== The Android HAL daemon for Bluetooth functionality implements the Unix socket server protocol around /run/bluetooth/daemon (tentative location) or Linux abstract sockets (tentative name). The daemon is single threaded and uses a mainloop for scheduling and general operation. The protocol is SOCK_SEQPACKET based and follows a strict PDU specification with a generic header and initial registration exchange. The communication is driven from the HAL with command/response exchanges. The daemon will use notification to signal events. The protocol is single PDU exchanged based, meaning every command requires a response. Notification does not require any confirmation. Not handling this PDU exchange leads to a disconnection of the socket. Command/response and notification use separate sockets. First connected socket is used for command/response, second for notification. All services are multi-plexed over same pair of sockets. Separation is done to ease implementation of simple HAL library with dedicated thread for handling notification. This strict protocol requirement is done to match C based callbacks and callout functions that are running in a thread inside the HAL and might block. .--Android--. .--Android--. | daemon | | HAL | | | Command | | | | <-------------------------- | | | | | | | | --------------------------> | | | | Response | | | | | | | | | | | | Notification | | | | --------------------------> | | | | | | '-----------' '-----------' Every packet will follow the basic header to support simple multi-plexing over the same socket. It will also support a basic control channel with service id 0. 0 8 16 24 31 +--------------+--------------+--------------+--------------+ | Service ID | Opcode | Data Length | +--------------+--------------+-----------------------------+ | | The unique service ID is assigned by this specification for each HAL. As general rule of thumb, the opcode for command matches the opcode for a response. Or the opcode 0x00 for an error is returned. Notification opcodes start from 0x81. Opcode 0x80 is reserved and shall not be used. All command/response opcodes have the least significant bit not set. And all notifications have the least significant bit set. The HAL modules only have the job to map the callback and event functions to the protocol. They do not need to do anything else. Below is an example of a sample transaction for the Bluetooth Core HAL and enabling of an adapter. HAL Daemon ---------------------------------------------------- call enable() --> command 0x01 return enable() <-- response 0x01 call adapter_state_changed() <-- notification 0x81 return adapter_state_changed() When the Android hardware framework calls into the Bluetooth Core HAL and executes the enable() callback, the HAL module sends the enable command with opcode 0x01 to the daemon. As soon as the daemon responds, the callback will return with the appropriate result. After the daemon switched on the adapter, it will send a notification with opcode 0x81 to the HAL module. The Bluetooth Core HAL and Bluetooth Socket HAL are guaranteed to be available from the daemon. All other HAL modules are optional. When the Bluetooth Core HAL init() function is called, it should open the socket and register both "bluetooth" and "socket" service modules. It is required to register "socket" service at the same time since the HAL module does not have its own init() function. It is possible to send Configure command before registering any services to customize stack. This step is optional. When new profiles are initiated, the get_profile_interface() callback will load the profile and during init() of the profile, it should register the specific service. Bluetooth main thread Daemon ------------------------------------------------------- init() --> open command socket --> open notification socket --> register module "bluetooth" --> register module "socket" get_profile_interface() --> return profile struct --> continue on Handsfree thread Handsfree thread Daemon -------------------------------------------------------- init() --> register module handsfree Error response is common for all services and has fixed structure: Opcode 0x00 - Error response Response parameters: Status (1 octet) Valid status values: 0x01 = Fail 0x02 = Not ready 0x03 = No memory 0x04 = Busy 0x05 = Done (already completed) 0x06 = Unsupported 0x07 = Parameter invalid 0x08 = Unhandled 0x09 = Authentication failure 0x0a = Remote device down 0x0b = Authentication rejected Core Service (ID 0) =================== Opcode 0x00 - Error response Opcode 0x01 - Register module command/response Command parameters: Service id (1 octet) Mode (1 octet) Max Clients (4 octets) Response parameters: In case a command is sent for an undeclared service ID, it will be rejected. Also there will be no notifications for undeclared service ID. Valid Mode values: 0x00 = Default Mode 0xXX = as defined by service In case of an error, the error response will be returned. Opcode 0x02 - Unregister module command/response Command parameters: Service id (1 octet) Response parameters: In case of an error, the error response will be returned. Opcode 0x03 - Configuration Command parameters: Num options (1 octet) Option Type # (1 octet) Option Length # (2 octets) Option Value # (variable) Response parameters: Valid configure option types: 0x00 = Vendor 0x01 = Model 0x02 = Name 0x03 = Serial Number 0x04 = System ID 0x05 = PnP ID 0x06 = Firmware Rev 0x07 = Hardware Rev In case of an error, the error response will be returned. Bluetooth Core HAL (ID 1) ========================= Android HAL name: "bluetooth" (BT_HARDWARE_MODULE_ID) Service modes: 0x00 = Enable BR/EDR/LE if supported (default) 0x01 = Enable BR/EDR only 0x02 = Enable LE only Commands and responses: Opcode 0x00 - Error response Opcode 0x01 - Enable command/response Command parameters: Response parameters: In case of an error, the error response will be returned. Opcode 0x02 - Disable command/response Command parameters: Response parameters: In case of an error, the error response will be returned. Opcode 0x03 - Get Adapter Properties command/response Command parameters: Response parameters: In case of an error, the error response will be returned. Opcode 0x04 - Get Adapter Property command/response Command parameters: Property type (1 octet) Response parameters: In case of an error, the error response will be returned. Opcode 0x05 - Set Adapter Property command/response Command parameters: Property type (1 octet) Property length (2 octets) Property value (variable) Response parameters: In case of an error, the error response will be returned. Opcode 0x06 - Get Remote Device Properties command/response Command parameters: Remote address (6 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x07 - Get Remote Device Property command/response Command parameters: Remote address (6 octets) Property type (1 octet) Response parameters: In case of an error, the error response will be returned. Opcode 0x08 - Set Remote Device Property command/response Command parameters: Remote address (6 octets) Property type (1 octet) Property length (2 octets) Property value (variable) Response parameters: In case of an error, the error response will be returned. Opcode 0x09 - Get Remote Service Record command/response Command parameters: Remote address (6 octets) UUID (16 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x0a - Get Remote Services command/response Command parameters: Remote address (6 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x0b - Start Discovery command/response Command parameters: Response parameters: In case of an error, the error response will be returned. Opcode 0x0c - Cancel Discovery command/response Command parameters: Response parameters: In case of an error, the error response will be returned. Opcode 0x0d - Create Bond command/response Command parameters: Remote address (6 octets) Transport (1 octet) Response parameters: In case of an error, the error response will be returned. Opcode 0x0e - Remove Bond command/response Command parameters: Remote address (6 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x0f - Cancel Bond command/response Command parameters: Remote address (6 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x10 - PIN Reply command/response Command parameters: Remote address (6 octets) Accept (1 octet) PIN length (1 octet) PIN code (16 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x11 - SSP Reply command/response Command parameters: Remote address (6 octets) SSP variant (1 octet) Accept (1 octet) Passkey (4 octets) Response parameters: Valid SSP variant values: 0x00 = Passkey Confirmation 0x01 = Passkey Entry 0x02 = Consent (for Just Works) 0x03 = Passkey Notification In case of an error, the error response will be returned. Opcode 0x12 - DUT Mode Configure command/response Command parameters: Enable (1 octet) Response parameters: In case of an error, the error response will be returned. Opcode 0x13 - DUT Mode Send command/response Command parameters: Opcode (2 octets) Length (1 octet) Data (variable) Response parameters: In case of an error, the error response will be returned. Opcode 0x14 - LE Test Mode command/response Command parameters: Opcode (2 octets) Length (1 octet) Data (variable) Response parameters: In case of an error, the error response will be returned. Notifications: Opcode 0x81 - Adapter State Changed notification Notifications parameters: State (1 octet) Valid state values: 0x00 = Off 0x01 = On Opcode 0x82 - Adapter Properties Changed notification Notification parameters: Status (1 octet) Num properties (1 octet) Type # (1 octet) Length # (2 octets) Value # (variable) ... Opcode 0x83 - Remote Device Properties notification Notification parameters: Status (1 octet) Remote address (6 octets) Num properties (1 octet) Type # (1 octet) Length # (2 octets) Value # (variable) ... Opcode 0x84 - Device Found notification Notification parameters: Num properties (1 octet) Type # (1 octet) Length # (2 octets) Value # (variable) ... Opcode 0x85 - Discovery State Changed notification Notifications parameters: State (1 octet) Opcode 0x86 - PIN Request notification Notification parameters: Remote address (6 octets) Remote name (249 octets) Class of device (4 octets) Opcode 0x87 - SSP Request notification Notification parameters: Remote address (6 octets) Remote name (249 octets) Class of device (4 octets) Pairing variant (1 octet) Passkey (4 octets) Opcode 0x88 - Bond State Changed notification Notification parameters: Status (1 octet) Remote address (6 octets) Bond state (1 octet) Valid bond state values: 0x00 = None 0x01 = Bonding 0x02 = Bonded Opcode 0x89 - ACL State Changed notification Notification parameters: Status (1 octet) Remote address (6 octets) ACL state (1 octet) Opcode 0x8a - DUT Mode Receive notification Notification parameters: Opcode (2 octets) Length (1 octet) Data (variable) Opcode 0x8b - LE Test Mode notification Notification parameters: Status (1 octet) Num packets (2 octets) Bluetooth Socket HAL (ID 2) =========================== Android HAL name:: "socket" (BT_PROFILE_SOCKETS_ID) Commands and responses: Opcode 0x00 - Error response Opcode 0x01 - Listen command/response Command parameters: Socket type (1 octet) Service name (256 octets) Service UUID (16 octets) Channel (4 octets) Socket flags (1 octet) Response parameters: File descriptor (inline) Valid socket types: 0x01 = RFCOMM 0x02 = SCO 0x03 = L2CAP Valid socket flags: 0x01 = Encrypt 0x02 = Auth In case of an error, the error response will be returned. Opcode 0x02 - Connect command/response Command parameters: Remote address (6 octets) Socket type (1 octet) Service UUID (16 octets) Channel (4 octets) Socket flags (1 octet) Response parameters: File descriptor (inline) Valid socket types: 0x01 = RFCOMM 0x02 = SCO 0x03 = L2CAP Valid socket flags: 0x01 = Encrypt 0x02 = Auth In case of an error, the error response will be returned. Bluetooth HID Host HAL (ID 3) ============================ Android HAL name: "hidhost" (BT_PROFILE_HIDHOST_ID) Commands and responses: Opcode 0x00 - Error response Opcode 0x01 - Connect command/response Command parameters: Remote address (6 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x02 - Disconnect command/response Command parameters: Remote address (6 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x03 - Virtual Unplug command/response Command parameters: Remote address (6 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x04 - Set Info command/response Command parameters: Remote address (6 octets) Attribute mask (2 octets) Subclass (1 octet) Application ID (1 octet) Vendor ID (2 octets) Product ID (2 octets) Version (2 octets) Country code (1 octet) Descriptor length (2 octet) Descriptor value (884 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x05 - Get Protocol command/response Command parameters: Remote address (6 octets) Protocol mode (1 octet) Response parameters: Valid protocol modes: 0x00 = Report 0x01 = Boot 0xff = Unsupported In case of an error, the error response will be returned. Opcode 0x06 - Set Protocol command/response Command parameters: Remote address (6 octets) Protocol mode (1 octet) Response parameters: Valid protocol modes: 0x00 = Report 0x01 = Boot 0xff = Unsupported In case of an error, the error response will be returned. Opcode 0x07 - Get Report command/response Command parameters: Remote address (6 octets) Report type (1 octet) Report ID (1 octet) Buffer size (2 octet) Response parameters: Valid report types: 0x01 = Input 0x02 = Output 0x03 = Feature In case of an error, the error response will be returned. Opcode 0x08 - Set Report command/response Command parameters: Remote address (6 octets) Report type (1 octet) Report length (2 octets) Report data (Report length) Response parameters: Valid report types: 0x01 = Input 0x02 = Output 0x03 = Feature In case of an error, the error response will be returned. Opcode 0x09 - Send Data command/response Command parameters: Remote address (6 octets) Data length (2 octets) Data (Data length) Response parameters: In case of an error, the error response will be returned. Notifications: Status is common for many notifications and has fixed value range: Status values: 0x00 = Ok 0x01 = Handshake - Device not ready 0x02 = Handshake - Invalid report ID 0x03 = Handshake - Transaction not SPT 0x04 = Handshake - Invalid parameter 0x05 = Handshake - Generic error 0x06 = General error 0x07 = SDP error 0x08 = Set protocol error 0x09 = Device database full 0x0a = Device type not supported 0x0b = No resources 0x0c = Authentication failed 0x0d = HDL Opcode 0x81 - Connection State notification Notification parameters: Remote address (6 octets) Connection State (1 octets) Valid connection states: 0x00 = Connected 0x01 = Connecting 0x02 = Disconnected 0x03 = Disconnecting 0x04 = Failed - Mouse from host 0x05 = Failed - Keyboard from host 0x06 = Failed - Too many devices 0x07 = Failed - No HID driver 0x08 = Failed - generic 0x09 = Unknown Opcode 0x82 - HID Info notification Notification parameters: Remote address (6 octets) Attribute mask (2 octets) Subclass (1 octet) Application ID (1 octet) Vendor ID (2 octets) Product ID (2 octets) Version (2 octets) Country code (1 octet) Descriptor length (2 octet) Descriptor value (884 octets) Opcode 0x83 - Protocol Mode notification Notification parameters: Remote address (6 octets) Status (1 octet) Protocol mode (1 octet) Valid protocol modes: 0x00 = Report 0x01 = Boot 0xff = Unsupported Opcode 0x84 - Idle Time notification Notification parameters: Remote address (6 octets) Status (1 octet) Idle time (2 octets) Opcode 0x85 - Get Report notification Notification parameters: Remote address (6 octets) Status (1 octet) Report length (2 octets) Report data (variable) Opcode 0x86 - Virtual Unplug notification Notification parameters: Remote address (6 octets) Status (1 octet) Opcode 0x87 - Handshake notification Notification parameters: Remote address (6 octets) Status (1 octet) Only status values from 0x00 to 0x05 are valid as handshake status. Bluetooth PAN HAL (ID 4) ======================== Android HAL name: "pan" (BT_PROFILE_PAN_ID) Commands and responses: Opcode 0x00 - Error response Opcode 0x01 - Enable command/response Command parameters: Local role (1 octet) Response parameters: Valid role values: 0x00 = None 0x01 = NAP 0x02 = PANU In case of an error, the error response will be returned. Opcode 0x02 - Get Local Role command/response Command parameters: Response parameters: Local role (1 octet) Valid role values: 0x00 = None 0x01 = NAP 0x02 = PANU In case of an error, the error response will be returned. Opcode 0x03 - Connect command/response Command parameters: Remote address (6 octets) Local role (1 octet) Remote role (1 octet) Response parameters: Valid role values: 0x01 = NAP 0x02 = PANU In case of an error, the error response will be returned. Opcode 0x04 - Disconnect command/response Command parameters: Remote address (6 octets) Response parameters: In case of an error, the error response will be returned. Notifications: Opcode 0x81 - Control State notification Notification parameters: Control state (1 octet) Status (1 octet) Local role (1 octet) Interface name (17 octet) Valid control states: 0x00 = Enabled 0x01 = Disabled Valid role values: 0x00 = None 0x01 = NAP 0x02 = PANU Opcode 0x82 - Connection State notification Notification parameters: Connection state (1 octet) Status (1 octet) Remote address (6 octets) Local role (1 octet) Remote role (1 octet) Valid connection states: 0x00 = Connected 0x01 = Connecting 0x02 = Disconnected 0x03 = Disconnecting Valid role values: 0x01 = NAP 0x02 = PANU Bluetooth Handsfree HAL (ID 5) ============================== Android HAL name: "handsfree" (BT_PROFILE_HANDSFREE_ID) Service modes: 0x00 = Headset Profile only mode (default) 0x01 = Handsfree Profile (narrowband speech) 0x02 = Handsfree Profile (narrowband and wideband speech) Commands and responses: Opcode 0x00 - Error response Opcode 0x01 - Connect command/response Command parameters: Remote address (6 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x02 - Disconnect command/response Command parameters: Remote address (6 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x03 - Connect Audio command/response Command parameters: Remote address (6 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x04 - Disconnect Audio command/response Command parameters: Remote address (6 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x05 - Start Voice Recognition command/response Command parameters: Remote address (6 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x06 - Stop Voice Recognition command/response Command parameters: Remote address (6 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x07 - Volume Control command/response Command parameters: Volume type (1 octet) Volume (1 octet) Remote address (6 octets) Response parameters: Valid volume types: 0x00 = Speaker 0x01 = Microphone In case of an error, the error response will be returned. Opcode 0x08 - Device Status Notification command/response Command parameters: Network state (1 octet) Service type (1 octet) Signal strength (1 octet) Battery level (1 octet) Response parameters: Valid network states: 0x00 = Not available 0x01 = Available Valid service types: 0x00 = Home network 0x01 = Roaming network In case of an error, the error response will be returned. Opcode 0x09 - COPS Response command/response Command parameters: COPS command response (string) Remote address (6 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x0a - CIND Response command/response Command parameters: Service (1 octet) Number of active calls (1 octet) Number of held calls (1 octet) Call setup state (1 octet) Signal strength (1 octet) Roaming indicator (1 octet) Battery level (1 octet) Remote address (6 octets) Response parameters: Valid call setup states: 0x00 = Active 0x01 = Held 0x02 = Dialing 0x03 = Alerting 0x04 = Incoming 0x05 = Waiting 0x06 = Idle In case of an error, the error response will be returned. Opcode 0x0b - Formatted AT Response command/response Command parameters: Pre-formatted AT response (string) Remote address (6 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x0c - AT Response command/response Command parameters: Response code (1 octet) Error code (1 octet) Remote address (6 octets) Response parameters: Valid response codes: 0x00 = ERROR 0x01 = OK In case of an error, the error response will be returned. Opcode 0x0d - CLCC Response command/response Command parameters: Call index (1 octet) Call direction (1 octet) Call state (1 octet) Call mode (1 octet) Call multiparty type (1 octet) Call number type (1 octet) Call number (string) Remote address (6 octets) Response parameters: Valid call directions: 0x00 = Outgoing 0x01 = Incoming Valid call states: 0x00 = Active 0x01 = Held 0x02 = Dialing 0x03 = Alerting 0x04 = Incoming 0x05 = Waiting 0x06 = Idle Valid call modes: 0x00 = Voice 0x01 = Data 0x02 = Fax Valid multiparty types: 0x00 = Single call 0x01 = Multiparty call Valid number types: 0x81 = Unknown 0x91 = International In case of an error, the error response will be returned. Opcode 0x0e - Phone Status Change command/response Command parameters: Number of active calls (1 octet) Number of held calls (1 octet) Call setup state (1 octet) Call number type (1 octet) Call number (string) Response parameters: Valid call setup states: 0x00 = Active 0x01 = Held 0x02 = Dialing 0x03 = Alerting 0x04 = Incoming 0x05 = Waiting 0x06 = Idle Valid number types: 0x81 = Unknown 0x91 = International In case of an error, the error response will be returned. Opcode 0x0f - Configure WBS command/response Command parameters: Remote address (6 octets) Config (1 octet) Response parameters: Valid config values: 0x00 = None 0x01 = No 0x02 = Yes In case of an error, the error response will be returned. Notifications: Opcode 0x81 - Connection State notification Notification parameters: Connection state (1 octet) Remote address (6 octets) Valid connection states: 0x00 = Disconnected 0x01 = Connecting 0x02 = Connected 0x03 = SLC connected 0x04 = Disconnecting Opcode 0x82 - Audio State notification Notification parameters: Audio state (1 octet) Remote address (6 octets) Valid audio states: 0x00 = Disconnected 0x01 = Connecting 0x02 = Connected 0x03 = Disconnecting Opcode 0x83 - Voice Recognition Command notification Notification parameters: Voice recognition state (1 octet) Remote address (6 octets) Valid voice recognition states: 0x00 = Stopped 0x01 = Started Opcode 0x84 - Answer Call Command notification Notification parameters: Remote address (6 octets) Opcode 0x85 - Hangup Call Command notification Notification parameters: Remote address (6 octets) Opcode 0x86 - Volume Command notification Notification parameters: Volume type (1 octet) Volume (1 octet) Remote address (6 octets) Valid volume types: 0x00 = Speaker 0x01 = Microphone Opcode 0x87 - Dial Call Command notification Notification parameters: Remote address (6 octets) Number (string) Opcode 0x88 - DTMF Command notification Notification parameters: Tone (1 octet) Remote address (6 octets) Opcode 0x89 - NREC Command notification Notification parameters: NREC types (1 octet) Remote address (6 octets) Valid NREC types: 0x00 = Stop 0x01 = Start Opcode 0x8a - CHLD Command notification Notification parameters: NREC types (1 octet) Remote address (6 octets) Valid CHLD types: 0x00 = Release and hold 0x01 = Release active and accept held 0x02 = Hold active and accept held 0x03 = Add held call to conference Opcode 0x8b - CNUM Command notification Notification parameters: Remote address (6 octets) Opcode 0x8c - CIND Command notification Notification parameters: Remote address (6 octets) Opcode 0x8d - COPS Command notification Notification parameters: Remote address (6 octets) Opcode 0x8e - CLCC Command notification Notification parameters: Remote address (6 octets) Opcode 0x8f - Unknown AT Command notification Notification parameters: Remote address (6 octets) AT command (string) Opcode 0x90 - Key Pressed Command notification Notification parameters: Remote address (6 octets) Opcode 0x91 - WBS Command notification Notification parameters: WBS types (1 octet) Remote address (6 octets) Valid WBS types: 0x00 = None 0x01 = No 0x02 = Yes Bluetooth Advanced Audio HAL (ID 6) Bluetooth Advanced Audio Sink HAL (ID 13) ========================================= Android HAL name: "a2dp" (BT_PROFILE_ADVANCED_AUDIO_ID) Android HAL name: "a2dp_sink" (BT_PROFILE_ADVANCED_AUDIO__SINK_ID) Commands and responses: Opcode 0x00 - Error response Opcode 0x01 - Connect command/response Command parameters: Remote address (6 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x02 - Disconnect command/response Command parameters: Remote address (6 octets) Response parameters: In case of an error, the error response will be returned. Notifications: Opcode 0x81 - Connection State notification Notification parameters: Connection state (1 octet) Remote address (6 octets) Valid connection states: 0x00 = Disconnected 0x01 = Connecting 0x02 = Connected 0x03 = Disconnecting Opcode 0x82 - Audio State notification Notification parameters: Audio state (1 octet) Remote address (6 octets) Valid connection states: 0x00 = Remote suspend 0x01 = Stopped 0x02 = Started Opcode 0x83 - Audio Configuration notification Notification parameters: Remote address (6 octets) Sample Rate in Hz (4 octets) Channel Count (1 octet) Valid channel count: 0x01 = Mono 0x02 = Stereo Bluetooth Health HAL (ID 7) =========================== Android HAL name: "health" (BT_PROFILE_HEALTH_ID) Commands and responses: Opcode 0x00 - Error response Opcode 0x01 - Register Application command/response Command parameters: Number of MDEP (1 octet) Application name offset (2 octets) Provider name offset (2 octets) Service name offset (2 octets) Service description offset (2 octets) Data length (2 octets) Data (data length) Response parameters: Application ID (2 octets) Strings are null terminated. In case of an error, the error response will be returned. Opcode 0x02 - Register Application MDEP data command/response Command parameters: Application ID (2 octets) MDEP Role (1 octet) Data type (2 octets) Channel type (1 octet) MDEP description length (2 octets) MDEP description (MDEP desciption length) Response parameters: In case of an error, the error response will be returned. Opcode 0x03 - Unregister Application command/response Command parameters: Application ID (2 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x04 - Connect Channel command/response Command parameters: Application ID (2 octets) Remote address (6 octets) MDEP index (1 octet) Response parameters: Channel ID (2 octets) In case of an error, the error response will be returned. Opcode 0x05 - Destroy Channel command/response Command parameters: Channel ID (2 octets) Response parameters: In case of an error, the error response will be returned. Notifications: Opcode 0x81 - Application Registration State notification Notification parameters: Application ID (2 octets) Application state (1 octet) Valid application states: 0x00 = Registration success 0x01 = Registration failed 0x02 = Deregistration success 0x03 = Deregistration failed Opcode 0x82 - Channel State notification Notification parameters: Application ID (2 octets) Remote address (6 octets) MDEP index (1 octet) Channel ID (2 octets) Channel state (1 octet) File descriptor (inline) Valid channel states: 0x00 = Connecting 0x01 = Connected 0x02 = Disconnecting 0x03 = Disconnected 0x04 = Destroyed Bluetooth Remote Control Target HAL (ID 8) =================================== Android HAL name: "avrcp" (BT_PROFILE_AV_RC_ID) Commands and responses: Opcode 0x00 - Error response Opcode 0x01 - Get Play Status Response command/response Command parameters: Status (1 octet) Duration (4 octets) Position (4 octets) In case of an error, the error response will be returned. Valid status values: 0x00 = Stopped 0x01 = Playing 0x02 = Paused 0x03 = Fwd seek 0x04 = Rev seek 0xff = Error Opcode 0x02 - List Player Attributes Response command/response Command parameters: Number of attributes (1 octet) Attribute # (1 octet) ... In case of an error, the error response will be returned. Valid attributes: 0x01 = Equalizer 0x02 = Repead 0x03 = Shuffle 0x04 = Scan Opcode 0x03 - List Player Values Response command/response Command parameters: Number of values (1 octet) Value # (1 octet) ... In case of an error, the error response will be returned. Opcode 0x04 - Get Player Values Response command/response Command parameters: Number of attributes (1 octet) Attribute # (1 octet) Value # (1 octet) ... In case of an error, the error response will be returned. Valid attributes: Same as in List Player Attributes Opcode 0x05 - Get Player Attributes Text Response command/response Command parameters: Number of attributes (1 octet) Attribute # (1 octet) Attribute # text length (1 octet) Attribute # text (variable) ... In case of an error, the error response will be returned. Valid attributes: Same as in List Player Attributes Opcode 0x06 - Get Player Values Text Response command/response Command parameters: Number of values (1 octet) Value # (1 octet) Value # text length (1 octet) Value # text (variable) ... In case of an error, the error response will be returned. Opcode 0x07 - Get Element Attributes Text Response command/response Command parameters: Number of elements (1 octet) Element # (1 octet) Element # text length (1 octet) Element # text (variable) ... In case of an error, the error response will be returned. Valid elements: 0x01 = Title 0x02 = Artist 0x03 = Album 0x04 = Track Number 0x05 = Number of Tracks 0x06 = Genre 0x06 = Duration Opcode 0x08 - Set Player Attributes Value Response command/response Command parameters: Status (1 octet) In case of an error, the error response will be returned. Valid status values: Same as in Get Play Status Response Opcode 0x09 - Register Notification Response command/response Command parameters: Event (1 octet) Type (1 octet) Data length (1 octet) Data (variable) In case of an error, the error response will be returned. Valid event values: 0x01 = Status Changed 0x02 = Track Changed 0x03 = Track Reached End 0x04 = Track Reached Start 0x05 = Position Changed 0x08 = Setting Changed Valid type values : 0x00 = Interim 0x01 = Changed Opcode 0x0a - Set Volume command/response Command parameters: Value (1 octet) In case of an error, the error response will be returned. Notifications: Opcode 0x81 - Remote Features notification Notification parameters: Remote address (6 octets) Features (1 octet) Valid features values : 0x00 = None 0x01 = Metadata 0x02 = Absolute Volume 0x03 = Browse Opcode 0x82 - Get Play Status notification Notification parameters: Opcode 0x83 - List Player Attributes notification Notification parameters: Opcode 0x84 - List Player Values notification Notification parameters: Attribute (1 octet) Valid attribute values: Same as in List Player Attributes Opcode 0x85 - Get Player Values notification Notification parameters: Number of attributes (1 octet) Attribute # (1 octet) ... Valid attribute values: Same as in List Player Attributes Opcode 0x86 - Get Player Attributes Text notification Notification parameters: Number of attributes (1 octet) Attribute # (1 octet) ... Valid attribute values: Same as in List Player Attributes Opcode 0x87 - Get Player Values Text notification Notification parameters: Attribute (1 octet) Number of values (1 octet) Value # (1 octet) ... Valid attribute values: Same as in List Player Attributes Opcode 0x88 - Set Player Values notification Notification parameters: Number of attributes (1 octet) Attribute # (1 octet) Value # (1 octet) ... Valid attribute values: Same as in List Player Attributes Opcode 0x89 - Get Element Attributes notification Notification parameters: Number of attributes (1 octet) Attribute # (1 octet) ... Valid attribute values: Same as in Get Element Attribute Opcode 0x8a - Register Notification notification Notification parameters: Event (1 octet) Parameter (4 octets) Valid event values: Same as in Register Notification Opcode 0x8b - Volume Changed notification Notification parameters: Volume (1 octet) Type (1 octet) Valid type values: Same as in Register Notification Opcode 0x8c - Passthrough Command notification Notification parameters: ID (1 octet) State (1 octet) Bluetooth GATT HAL (ID 9) ========================= Android HAL name: "gatt" (BT_PROFILE_GATT_ID) Structures: GATT Service ID: UUID (16 octets) Instance ID (1 octet) Is Primary (1 octet) GATT Included Service ID: UUID (16 octets) Instance ID (1 octet) Is Primary (1 octet) GATT Characteristic ID: UUID (16 octets) Instance ID (1 octet) GATT Descriptor ID: UUID (16 octets) Instance ID (1 octet) Commands and responses: Opcode 0x00 - Error response Opcode 0x01 - Client Register command/response Command parameters: Service UUID (16 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x02 - Client Unregister command/response Command parameters: Client Interface (4 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x03 - Client Scan command/response Command parameters: Client Interface (4 octets) Start (1 octet) Response parameters: In case of an error, the error response will be returned. Opcode 0x04 - Client Connect Device command/response Command parameters: Client Interface (4 octets) Remote address (6 octets) Is Direct (1 octet) Transport (4 octets) Response parameters: Valid transport value: 0x00 = Auto 0x01 = BR/EDR 0x02 = LE In case of an error, the error response will be returned. Opcode 0x05 - Client Disconnect Device command/response Command parameters: Client Interface (4 octets) Remote address (6 octets) Connection ID (4 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x06 - Client Listen command/response Command parameters: Client Interface (4 octets) Start (1 octet) Response parameters: In case of an error, the error response will be returned. Opcode 0x07 - Client Refresh command/response Command parameters: Client Interface (4 octets) Remote address (6 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x08 - Client Search Service command/response Command parameters: Connection ID (4 octets) Filtered (1 octet) Filter UUID (16 octets) Response parameters: Filter UUID shall only be present when Filtered is non-zero. In case of an error, the error response will be returned. Opcode 0x09 - Client Get Included Service command/response Command parameters: Connection ID (4 octets) GATT Service ID (18 octets) Continuation (1 octet) GATT Included Service ID (18 octets) ... Response parameters: GATT Included Service ID shall only be present when Continuation is non-zero. In case of an error, the error response will be returned. Opcode 0x0a - Client Get Characteristic command/response Command parameters: Connection ID (4 octets) GATT Service ID (18 octets) Continuation (1 octet) GATT Characteristic ID (17 octets) ... Response parameters: GATT Characteristic ID shall only be present when Continuation is non-zero. In case of an error, the error response will be returned. Opcode 0x0b - Client Get Descriptor command/response Command parameters: Connection ID (4 octets) GATT Service ID (18 octets) GATT Characteristic ID (17 octets) Continuation (1 octet) GATT Descriptor ID (17 octets) ... Response parameters: GATT Descriptor ID shall only be present when Continuation is non-zero. In case of an error, the error response will be returned. Opcode 0x0c - Client Read Characteristic command/response Command parameters: Connection ID (4 octets) GATT Service ID (18 octets) GATT Characteristic ID (17 octets) Authorization (4 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x0d - Client Write Characteristic command/response Command parameters: Connection ID (4 octets) GATT Service ID (18 octets) GATT Characteristic ID (17 octets) Write Type (4 octets) Length (4 octets) Authorization Req. (4 octets) Value (variable) Response parameters: Valid Write Type: 0x01 = No response 0x02 = Default 0x03 = Prepare 0x04 = Signed In case of an error, the error response will be returned. Opcode 0x0e - Client Read Descriptor command/response Command parameters: Connection ID (4 octets) GATT Service ID (18 octets) GATT Characteristic ID (17 octets) GATT Descriptor ID (17 octets) Authorization Req. (4 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x0f - Client Write Descriptor command/response Command parameters: Connection ID (4 octets) GATT Service ID (18 octets) GATT Characteristic ID (17 octets) GATT Descriptor ID (17 octets) Write Type (4 octets) Length (4 octets) Authorization Req. (4 octets) Value (variable) Response parameters: Valid Write Type: 0x01 = No response 0x02 = Default 0x03 = Prepare 0x04 = Signed In case of an error, the error response will be returned. Opcode 0x10 - Client Execute Write command/response Command parameters: Connection ID (4 octets) Execute (4 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x11 - Client Register For Notification command/response Command parameters: Client Interface (4 octets) Remote address (6 octets) GATT Service ID (18 octets) GATT Characteristic ID (17 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x12 - Client Deregister For Notification command/response Command parameters: Client Interface (4 octets) Remote address (6 octets) GATT Service ID (18 octets) GATT Characteristic ID (17 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x13 - Client Read Remote RSSI command/response Command parameters: Client Interface (4 octets) Remote address (6 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x14 - Client Get Device Type command/response Command parameters: Remote address (6 octets) Response parameters: Device Type Valid Device Type: 0x01 = BREDR 0x02 = BLE 0x03 = DUAL In case of an error, the error response will be returned. Opcode 0x15 - Client Set Advertising data command/response Command parameters: Server Interface (4 octets) Set Scan Resp. (1 octet) Include Name (1 octet) Include TX Power (1 octet) Min. Interval (4 octets) Max. Interval (4 octets) Appearance (4 octets) Manufacturer Len. (2 octets) Manufacturer Data (variable) Response parameters: In case of an error, the error response will be returned. Opcode 0x16 - Client Test Command command/response Command parameters: Command (4 octets) Address (6 octets) UUID (16 octets) U1 (2 octets) U2 (2 octets) U3 (2 octets) U4 (2 octets) U5 (2 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x17 - Server Register command/response Command parameters: UUID (16 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x18 - Server Unregister command/response Command parameters: Server (4 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x19 - Server Connect Peripheral command/response Command parameters: Server (4 octets) Remote address (6 octets) Is Direct (1 octet) Transport (4 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x1a - Server Disconnect Peripheral command/response Command parameters: Server (4 octets) Remote address (6 octets) Connection ID (1 octet) Response parameters: In case of an error, the error response will be returned. Opcode 0x1b - Server Add Service command/response Command parameters: Server (4 octets) GATT Service ID (18 octets) Number of Handles (4 octet) Response parameters: Valid GATT Service ID: UUID (16 octets) Instance ID (1 octet) Is Primary (1 octet) In case of an error, the error response will be returned. Opcode 0x1c - Server Add Included Service command/response Command parameters: Server (4 octets) Service handle (4 octets) Included handle (4 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x1d - Server Add Characteristic command/response Command parameters: Server (4 octets) Service handle (4 octets) UUID (16 octets) Properties (4 octets) Permissions (4 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x1e - Server Add Descriptor command/response Command parameters: Server (4 octets) Service handle (4 octets) UUID (16 octets) Permissions (4 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x1f - Server Start Service command/response Command parameters: Server (4 octets) Service handle (4 octets) Transport (4 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x20 - Server Stop Service command/response Command parameters: Server (4 octets) Service handle (4 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x21 - Server Delete Service command/response Command parameters: Server (4 octets) Service handle (4 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x22 - Server Send Indication command/response Command parameters: Server (4 octets) Attribute handle (4 octets) Connection ID (4 octets) Length (4 octets) Confirmation (4 octets) Value (variable) Response parameters: In case of an error, the error response will be returned. Opcode 0x23 - Server Send Response command/response Command parameters: Connection ID (4 octets) Transaction ID (4 octets) Handle (2 octets) Offset (2 octets) Auth Request (1 octect) Status (4 octets) GATT Response (4 octets) Response parameters: Valid GATT Response: GATT Value (607 octets) Handle (2 octets) Valid GATT Value: Value (600 octets) Handle (2 octets) Offset (2 octets) Length (2 octets) Authentication Request (1 octet) In case of an error, the error response will be returned. Opcode 0x24 - Client Scan Filter Params Setup command/response Command parameters: Client Interface (4 octets) Action (4 octets) Filter Index (4 octets) Features (4 octets) List Type (4 octets) Filter Type (4 octets) RSSI High Threshold (4 octets) RSSI Low Threshold (4 octets) Delivery Mode (4 octets) Found Timeout (4 octets) Lost Timeout (4 octets) Found Timeout Count (4 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x25 - Client Scan Filter Add Remove command/response Command parameters: Client Interface (4 octets) Action (4 octets) Filter Type (4 octets) Filter Index (4 octets) Company ID (4 octets) Company ID Mask (4 octets) UUID (16 octets) UUID Mask (16 octets) Address (6 octets) Address Type (1 octet) Data Length (4 octets) Data (variable) Mask Length (4 octets) Mask (variable) Response parameters: In case of an error, the error response will be returned. Opcode 0x26 - Client Scan Filter Clear command/response Command parameters: Client Interface (4 octets) Filter Index (4 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x27 - Client Scan Filter Enable command/response Command parameters: Client Interface (4 octets) Enable (1 octet) Response parameters: In case of an error, the error response will be returned. Opcode 0x28 - Client Configure MTU command/response Command parameters: Connection ID (4 octets) MTU (4 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x29 - Client Connection Parameter Update command/response Command parameters: Address (6 octets) Min Interval (4 octets) Max Interval (4 octets) Latency (4 octets) Timeoutl (4 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x2a - Client Set Scan Parameters command/response Command parameters: Scan Interval (4 octets) Scan Window (4 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x2b - Client Setup Multi Advertising command/response Command parameters: Client ID (4 octets) Min Interval (4 octets) Max Interval (4 octets) ADV Type (4 octets) Channel Map (4 octets) TX Power (4 octets) Timeout (4 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x2c - Client Update Multi Advertising command/response Command parameters: Client ID (4 octets) Min Interval (4 octets) Max Interval (4 octets) ADV Type (4 octets) Channel Map (4 octets) TX Power (4 octets) Timeout (4 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x2d - Client Setup Multi Advertising Instance command/response Command parameters: Client ID (4 octets) Set Scan Response (1 octet) Include Name (1 octet) Include TX Power (1 octet) Appearance (4 octets) Manufacturer Data Length (4 octets) Manufacturer Data (variable) Service Data Length (4 octets) Service Data (variable) Service UUID Length (4 octets) Service UUID (variable) Response parameters: In case of an error, the error response will be returned. Opcode 0x2e - Client Disable Multi Advertising Instance command/response Command parameters: Client ID (4 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x2f - Client Configure Batchscan command/response Command parameters: Client ID (4 octets) Full Max (4 octets) Trunc Max (4 octets) Notify Threshold (4 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x30 - Client Enable Batchscan command/response Command parameters: Client ID (4 octets) Scan Mode (4 octets) Scan Interval (4 octets) Scan Window (4 octets) Address Type (4 octets) Discard Rule (4 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x31 - Client Disable Batchscan command/response Command parameters: Client ID (4 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x32 - Client Read Batchscan Resports command/response Command parameters: Client ID (4 octets) Scan Mode (4 octets) Response parameters: In case of an error, the error response will be returned. Notifications: Opcode 0x81 - Client Register notification Notification parameters: Status (4 octets) Client Interface (4 octets) UUID (16 octets) Opcode 0x82 - Client Scan Result notification Notification parameters: Address (6 octets) RSSI (4 octets) Length (2 octets) Data (variable) Opcode 0x83 - Client Connect Device notification Notification parameters: Connection ID (4 octets) Status (4 octets) Client Interface (4 octets) Address (6 octets) Opcode 0x84 - Client Disconnect Device notification Notification parameters: Connection ID (4 octets) Status (4 octets) Client Interface (4 octets) Address (6 octets) Opcode 0x85 - Client Search Complete notification Notification parameters: Connection ID (4 octets) Status (4 octets) Opcode 0x86 - Client Search Result notification Notification parameters: Connection ID (4 octets) GATT Service ID (18 octets) Opcode 0x87 - Client Get Characteristic notification Notification parameters: Connection ID (4 octets) Status (4 octets) GATT Service ID (18 octets) GATT Characteristic ID (17 octets) Char Prop. (4 octets) Opcode 0x88 - Client Get Descriptor notification Notification parameters: Connection ID (4 octets) Status (4 octets) GATT Service ID (18 octets) GATT Characteristic ID (17 octets) GATT Descriptor ID (17 octets) Opcode 0x89 - Client Get Included Service notification Notification parameters: Connection ID (4 octets) Status (4 octets) GATT Service ID (18 octets) GATT Included Service ID (18 octets) Opcode 0x8a - Client Register For Notification notification Notification parameters: Connection ID (4 octets) Registered (4 octets) Status (4 octets) GATT Service ID (18 octets) GATT Characteristic ID (17 octets) Opcode 0x8b - Client Notify notification Notification parameters: Connection ID (4 octets) Address (6 octets) GATT Service ID (18 octets) GATT Characteristic ID (17 octets) Is Notify (1 octet) Length (2 octets) Value (variable) Opcode 0x8c - Client Read Characteristic notification Notification parameters: Connection ID (4 octets) Status (4 octets) GATT Read Parameters (variable) Valid GATT Read Parameters: GATT Service ID (18 octets) GATT Characteristic ID (17 octets) GATT Descriptor ID (17 octets) Value Type (4 octets) Status (1 octet) Length (2 octets) Value (variable) Opcode 0x8d - Client Write Characteristic notification Notification parameters: Connection ID (4 octets) Status (4 octets) GATT Write Parameters (53 octets) Valid GATT Write Parameters: GATT Service ID (18 octets) GATT Characteristic ID (17 octets) GATT Description ID (17 octets) Status (1 octet) Opcode 0x8e - Client Read Descriptor notification Notification parameters: Connection ID (4 octets) Status (4 octets) GATT Read Parameters (variable) Valid GATT Read Parameters: As described in Read Characteristic Opcode 0x8f - Client Write Descriptor notification Notification parameters: Connection ID (4 octets) Status (4 octets) GATT Write Parameters (53 octets) Valid GATT Write Parameters: As described in Write Characteristic Opcode 0x90 - Client Execute Write notification Notification parameters: Connection ID (4 octets) Status (4 octets) Opcode 0x91 - Client Read Remote RSSI notification Notification parameters: Client (4 octets) Address (6 octets) RSSI (4 octets) Status (4 octets) Opcode 0x92 - Client Listen notification Notification parameters: Status (4 octets) Server Interface (4 octets) Opcode 0x93 - Server Register notification Notification parameters: Status (4 octets) Server (4 octets) UUID (16 octets) Opcode 0x94 - Server Connection notification Notification parameters: Connection ID (4 octets) Server (4 octets) Connected (4 octets) Address (6 octets) Opcode 0x95 - Server Service Added notification Notification parameters: Status (4 octets) Server (4 octets) GATT Service ID (18 octets) Service Handle (4 octets) Opcode 0x96 - Server Included Service Added notification Notification patemeters: Status (4 octets) Server (4 octets) Service Handle (4 octets) Included Service Handle (4 octets) Opcode 0x97 - Server Characteristic Added notification Notification parameters: Status (4 octets) Server (4 octets) UUID (16 octets) Service Handle (4 octets) Characteristic Handle (4 octets) Opcode 0x98 - Server Descriptor Added notification Notification parameters: Status (4 octets) Server (4 octets) UUID (6 octets) Service Handle (4 octets) Descriptor Handle (4 octets) Opcode 0x99 - Server Service Started notification Notification parameters: Status (4 octets) Server (4 octets) Service Handle (4 octets) Opcode 0x9a - Server Service Stopped notification Notification parameters: Status (4 octets) Server (4 octets) Service Handle (4 octets) Opcode 0x9b - Server Service Deleted notification Notification parameters: Status (4 octets) Server (4 octets) Service Handle (4 octets) Opcode 0x9c - Server Request Read notification Notification parameters: Connection ID (4 octets) Trans ID (4 octets) Address (6 octets) Attribute Handle (4 octets) Offset (4 octets) Is Long (1 octet) Opcode 0x9d - Server Request Write notification Notification parameters: Connection ID (4 octets) Trans ID (4 octets) Address (6 octets) Attribute Handle (4 octets) Offset (4 octets) Length (4 octets) Need Response (4 octets) Is Prepare (1 octet) Value (variable) Opcode 0x9e - Server Request Execute Write notification Notification parameters: Connection ID (4 octets) Trans ID (4 octets) Address (6 octets) Execute Write (4 octets) Opcode 0x9f - Server Response Confirmation notification Notification parameters: Status (4 octets) Handle (4 octets) Opcode 0xa0 - Client Configure MTU notification Notification parameters: Connection ID (4 octets) Status (4 octets) MTU (4 octets) Opcode 0xa1 - Client Filter Configuration notification Notification parameters: Action (4 octets) Client ID (4 octets) Status (4 octets) Filter Type (4 octets) Available Space (4 octets) Opcode 0xa2 - Client Filter Parameters notification Notification parameters: Action (4 octets) Client ID (4 octets) Status (4 octets) Available Space (4 octets) Opcode 0xa3 - Client Filter Status notification Notification parameters: Enable (4 octets) Client ID (4 octets) Status (4 octets) Opcode 0xa4 - Client Multi Advertising Enable notification Notification parameters: Client ID (4 octets) Status (4 octets) Opcode 0xa5 - Client Multi Advertising Update notification Notification parameters: Client ID (4 octets) Status (4 octets) Opcode 0xa6 - Client Multi Advertising Data notification Notification parameters: Client ID (4 octets) Status (4 octets) Opcode 0xa7 - Client Multi Advertising Disable notification Notification parameters: Client ID (4 octets) Status (4 octets) Opcode 0xa8 - Client Congestion notification Notification parameters: Connection ID (4 octets) Congested (1 octet) Opcode 0xa9 - Client Configure Batchscan notification Notification parameters: Client ID (4 octets) Status (4 octets) Opcode 0xaa - Client Enable Batchscan notification Notification parameters: Action (4 octets) Client ID (4 octets) Status (4 octets) Opcode 0xab - Client Batchscan Reports notification Notification parameters: Client ID (4 octets) Status (4 octets) Report Format (4 octets) Num Reports (4 octets) Data Length (4 octets) Data (variable) Opcode 0xac - Client Batchscan Threshold notification Notification parameters: Client ID (4 octets) Opcode 0xad - Client Track ADV notification Notification parameters: Client ID (4 octets) Filter Index (4 octets) Address Type (4 octets) Address (6 octets) State (4 octets) Opcode 0xae - Server Indication Sent notification Notification parameters: Connection ID (4 octets) Status (4 octets) Opcode 0xaf - Server Congestion notification Notification parameters: Connection ID (4 octets) Congested (1 octet) Opcode 0xb0 - Server MTU Changed notification Notification parameters: Connection ID (4 octets) MTU (4 octets) Bluetooth Handsfree Client HAL (ID 10) ====================================== Android HAL name: "hf_client" (BT_PROFILE_HANDSFREE_CLIENT_ID) Commands and response: Opcode 0x00 - Error response Opcode 0x01 - Connect command/respose Command parameters: Remote address (6 octects) Response parameters: In case of an error, the error response will be returned. Opcode 0x02 - Disonnect command/response Command parameters: Remote address (6 octetcs) Response parameters: In case of an error, the error response will be returned. Opcode 0x03 - Connect Audio command/response Command parameters: Remote address (6 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x04 - Disconnect Audio command/response Command parameters: Remote address (6 octets) Response parameters: In case of an error, the error response will be returned. Opcode 0x05 - Start Voice Recognition command/response Command parameters: Response parameters: In case of an error, the error response will be returned. Opcode 0x06 - Stop Voice Recognition command/response Command parameters: Response parameters: In case of an error, the error response will be returned. Opcode 0x07 - Volume Control command/response Command parameters: Volume type (1 octet) Volume (1 octet) Response parameters: Valid volume types: 0x00 = Speaker 0x01 = Microphone In case of an error, the error response will be returned. Opcode 0x08 - Dial command/response Command parameters: Number (string) Response parameters: In case of an error, the error response will be returned. Opcode 0x09 - Dial Memory command/response Command parameters: Location (4 octet) Response parameters: In case of an error, the error response will be returned. Opcode 0x10 - Handle Call Action command/response Command parameters: Action (1 octet) Call Index (1 octet) Response parameters: Valid actions: 0x00 = CHLD_0 0x01 = CHLD_1 0x02 = CHLD_2 0x03 = CHLD_3 0x04 = CHLD_4 0x05 = CHLD_1x 0x06 = CHLD_2x 0x07 = ATA 0x08 = CHUP 0x09 = BTRH_0 0x10 = BTRH_1 0x11 = BTRH_2 In case of an error, the error response will be returned. Opcode 0x11 - Query Current Calls commad/response Command parameters: Response parameters: In case of an error, the error response will be returned. Opcode 0x12 - Query Current Operator Name Command parameters: Response parameters: In case of an error, the error response will be returned. Opcode 0x13 - Retrieve Subscriber Info command/response Command parameters: Response parameters: In case of an error, the error response will be returned. Opcode 0x14 - Send DTMF Tone command/response Command parameters: Tone (1 octet) Response parameters: In case of an error, the error response will be returned. Opcode 0x15 - Request Last Voice Tag Number command/response Command parameters: Response parameters: In case of an error, the error response will be returned. Notifications: Opcode 0x81 - Connection State Changed notification Notification parameters: State (1 octet) Peer Features (4 octets) CHLD Features (4 octets) Address (6 octets) Valid State values: 0x00 = Disconnected 0x01 = Connecting 0x02 = Connected 0x03 = SLC Connected 0x04 = Disconnecting Peer Features is a bitmask of the supported features. Currently available bits: 0 Three way calling 1 Echo cancellation and/or noise reduction 2 Voice recognition 3 In band ring tone 4 Attach a number to a voice tag 5 Ability to reject a call 6 Enhanced call status 7 Enhanced call control 8 Extended Error Result Codes 9 Codec negotiations 10-31 Reserved for future use CHLD Features is a bitmask of the supported features. Currently available bits: 0 Release waiting call or held calls 1 Release active calls and accept other call 2 Release specified active call only 3 Place all active calls on hold and accept other call 4 Request private mode with secified call 5 Add a held call to the multiparty 6 Connect two calls and leave multiparty 7-31 Reserved for future use Note: Peer and CHLD Features are valid only in SCL Connected state Opcode 0x82 - Audio State Changed notification Notification parameters: State (1 octet) Address (6 octets) Valid State values: 0x00 = Disconnected 0x01 = Connecting 0x02 = Connected 0x03 = Connected mSBC Opcode 0x83 - Voice Recognition State Changed notification Notification parameters: State (1 octet) Valid State values: 0x00 = VR Stopped 0x01 = VR Started Opcode 0x84 - Network State Changed notification Notification parameters: State (1 octet) Valid State values: 0x00 = Network Not Available 0x01 = Network Available Opcode 0x85 - Network Roaming Type Changed notification Notification parameters: Type (1 octet) Valid Type values: 0x00 = Home 0x01 = Roaming Opcode 0x86 - Network Signal Strength notification Notification parameters: Signal Strength (1 octet) Opcode 0x87 - Battery Level notification Notification parameters: Battery Level (1 octet) Opcode 0x88 - Current Operator Name notification Notification parameters: Name (string) Opcode 0x89 - Call Indicatior notification Notification parameters: Call (1 octet) Valid Call values: 0x00 = No Call In Progress 0x01 = Call In Progress Opcode 0x8a - Call Setup Indicator notification Notification parameters: Call Setup (1 octet) Valid Call Setup values: 0x00 = None 0x01 = Incoming 0x02 = Outgoing 0x03 = Alerting Opcode 0x8b - Call Held Indicator notification Notification parameters: Call Held (1 octet) Valid Call Held values: 0x00 = None 0x01 = Hold and Active 0x02 = Hold Opcode 0x8c - Resposne and Hold Status notification Notification parameters: Status (1 octet) Valid Status values: 0x00 = Held 0x01 = Accept 0x02 = Reject Opcode 0x8d - Calling Line Identification notification Notification parameters: Number (string) Note: This will be called only on incoming call if number is provided. Opcode 0x8e - Call Waiting notification Notification parameters: Nunmber (string) Opcode 0x8f - Current Calls List notification Notification parameters: Index (1 octet) Direction (1 octet) Call State (1 octet) Multiparty (1 octet) Number (string) Valid Direction values: 0x00 = Outgoing 0x01 = Incoming Valid Call Sate values: 0x00 = Active 0x01 = Held 0x02 = Dialing 0x03 = Alerting 0x04 = Incoming 0x05 = Waiting 0x06 = Call held by Response and Hold Valid Multiparty values: 0x00 = Single Call 0x01 = Multiparty (conference) Call Note: Number might be empty Opcode 0x90 - Volume Changed notification Notification parameters: Type (1 octet) Volume (1 octet) Valid Type values: 0x00 = Speaker 0x01 = Microphone Opcode 0x91 - Command Complete Callback notification Notification parameters: Type (1 octet) CME (1 octet) Valid Type values: 0x00 = OK 0x01 = Error 0x02 = Error no carrier 0x03 = Error busy 0x04 = Error no answer 0x05 = Error delayed 0x06 = Error blacklisted 0x07 = Error CME Note: CME parameter is valid only for Error CME type Opcode 0x92 - Subscriber Service Info Callback notification Notification parameters: Name (string) Type (1 octet) Valid Type values: 0x00 = Service unknown 0x01 = Service voice 0x02 = Service fax Opcode 0x93 - In Band Ring Settings Callback notification Notification parameters: State (1 octet) Valid State values: 0x00 = In band ringtone not provided 0x01 = In band ringtone provided Opcode 0x94 - Last Voice Call Tag Number Callback notification Notification parameters: Number (string) Opcode 0x95 - Ring Indication notification Notification parameters: Bluetooth Map Client HAL (ID 11) ========================= Android HAL name: "map_client" (BT_PROFILE_MAP_CLIENT_ID) Commands and responses: Opcode 0x00 - Error response Opcode 0x01 - Get Remote MAS Instances Command parameters: Remote address (6 octets) Response parameters: In case of an error, the error response will be returned. Notifications: Opcode 0x81 - Remote MAS Instances notification Notification parameters: Status (1 octet) Remote address (6 octets) Number of instances (4 octets) Instance ID # (4 octets) Channel # (4 octets) Message types (4 octets) Name # (string) Bluetooth Remote Control Controller HAL (ID 12) =================================== Android HAL name: "avrcp-ctrl" (BT_PROFILE_AV_RC_CTRL_ID) Commands and responses: Opcode 0x00 - Error response Opcode 0x01 - Send Pass Through command/response Command parameters: Remote Address (6 octets) Key Code (1 octet) Key State (1 octet) In case of an error, the error response will be returned. Notifications: Opcode 0x81 - Passthrough Response Notification Notification parameters: ID (1 octet) Key State (1 octet) Opcode 0x82 - Connection State Notification Notification parameters: State (1 octet) Remote Address (6 octets)