Manual Reference Pages  - HCIATTACH (8)


hciattach - attach serial devices via UART HCI to BlueZ stack




hciattach [-n] [-p] [-t timeout] tty type|id speed flow


Hciattach is used to attach a serial UART to the Bluetooth stack as HCI transport interface.


-n Don’t detach from controlling terminal.
-p Print the PID when detaching.
-t timeout
  Specify an initialization timeout. (Default is 5 seconds.)
tty This specifies the serial device to attach. A leading /dev can be omitted. Examples: /dev/ttyS1 ttyS2
  The type or id of the Bluetooth device that is to be attached, i.e. vendor or other device specific identifier. Currently supported types are
type description
any Unspecified HCI_UART interface, no vendor specific options
  Ericsson based modules
digi Digianswer based cards
xircom Xircom PCMCIA cards: Credit Card Adapter and Real Port Adapter
csr CSR Casira serial adapter or BrainBoxes serial dongle (BL642)
bboxes BrainBoxes PCMCIA card (BL620)
swave Silicon Wave kits
bcsp Serial adapters using CSR chips with BCSP serial protocol

Supported IDs are (manufacturer id, product id)
0x0105, 0x080a
  Xircom PCMCIA cards: Credit Card Adapter and Real Port Adapter
0x0160, 0x0002
  BrainBoxes PCMCIA card (BL620)

speed The speed specifies the UART speed to use. Baudrates higher than 115.200bps require vendor specific initializations that are not implemented for all types of devices. In general the following speeds are supported:

9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600

Supported vendor devices are automatically initialised to their respective best settings.

flow If the keyword flow is appended to the list of options then hardware flow control is forced on the serial link ( CRTSCTS ). All above mentioned device types have flow set by default. To force no flow control use noflow instead.


Written by Maxim Krasnyansky <>

Manual page by Nils Faerber <>

BlueZ HCIATTACH (8) Jan 22 2002
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