btsco(4) [netbsd man page]

BTSCO(4)						   BSD Kernel Interfaces Manual 						  BTSCO(4)

NAME

     btsco -- Bluetooth SCO Audio

SYNOPSIS

     btsco*    at bthub?
     audio*    at audiobus?

DESCRIPTION

     The btsco driver provides support for Bluetooth SCO Audio devices through the audio(4) driver.

     The btsco driver must be configured at run time with the btdevctl(8) program.  The following properties are used by the btsco driver during
     autoconfiguration:

     local-bdaddr
	       Local device address.

     remote-bdaddr
	       Remote device address.

     service-name
	       The btsco driver matches the 'HF' and 'HSET' services.  For the 'HF' service, the btsco device will, on open(2), listen for incom-
	       ing connections from the remote device.	Otherwise, btsco will attempt to initiate a connection to the remote device.

     rfcomm-channel
	       This integer value is not used directly, but will be stored and passed via the BTSCO_INFO ioctl as below:

     SCO connections require a baseband connection between the two devices before they can be created.	The btsco driver does not create this, but
     can provide information to facilitate an application setting up a control channel prior to use, via the BTSCO_INFO ioctl(2) call on the mixer
     device, which returns a btsco_info structure as follows:

     #include <dev/bluetooth/btsco.h>

     struct btsco_info {
	     bdaddr_t	     laddr;	     /* controller bdaddr */
	     bdaddr_t	     raddr;	     /* headset bdaddr */
	     uint8_t	     channel;	     /* RFCOMM channel */
	     int	     vgs;	     /* mixer index speaker */
	     int	     vgm;	     /* mixer index mic */
     };

     #define BTSCO_INFO      _IOR('b', 16, struct btsco_info)

     The btsco driver can be configured to act in Connect or Listen mode.  In Connect mode, the btsco driver will initiate a connection to the
     remote device on an open(2) call, whereas in Listen mode, open(2) will block until the remote device initiates the connection.

SEE ALSO

     bthset(1), ioctl(2), audio(4), bluetooth(4), bthub(4), btdevctl(8)

HISTORY

     The btsco driver was written for NetBSD 4.0 by Iain Hibbert under the sponsorship of Itronix, Inc.

BUGS

     btsco takes no notice of the HCI Voice Setting in the Bluetooth controller, and this must be 0x0060 (the default) as alternate values are
     currently unsupported.

BSD
								  October 4, 2006							       BSD

Check Out this Related Man Page

BTHSET(1)						    BSD General Commands Manual 						 BTHSET(1)

NAME

     bthset -- Bluetooth Headset utility

SYNOPSIS

     bthset [-v] [-c command] [-m mixer] [-p file] [-s channel]
     bthset [-h]

DESCRIPTION

     The bthset utility is used to access a Bluetooth Headset with the btsco(4) audio device.  It opens the mixer(4) device and creates the con-
     trol connection to the headset, then conducts volume settings each way.  When bthset receives a SIGUSR1 signal, it will start sending RING
     codes to the headset until the headset button is pressed or a SIGUSR2 signal is received.	If the headset is ringing and bthset receives a
     button press notification, the specified command (if any) is executed.

     When the server channel is specified with the -s option, instead of opening the control connection, bthset will listen on the channel for
     incoming connections from the Headset and register as Headset Audio Gateway with the local SDP server.

     The options are as follows:

     -c command
	     Specify an optional command to be executed when the headset responds to ringing with a button press event.  This defaults to the con-
	     tents of the BTHSET_COMMAND environment variable, if set.

     -h      Print usage message.

     -m mixer
	     Specify the path to the mixer device.  This defaults to the contents of the BTHSET_MIXER environment variable, or /dev/mixer if not
	     set.

     -p file
	     Write the PID to file so that other programs can find us later.  This defaults to the contents of the BTHSET_PIDFILE environment
	     variable, if set.

     -s channel
	     Register with the local SDP server as a Headset Audio Gateway and listen for connections on the given RFCOMM server channel.

     -v      Be verbose.

EXIT STATUS

     The bthset utility exits 0 on success, and >0 if an error occurs.

FILES

     /dev/mixer

SEE ALSO

     btsco(4), mixer(4)

AUTHORS

     Iain Hibbert for Itronix, Inc

BSD
								   July 26, 2006							       BSD

Linux and UNIX Man Pages

btsco(4) [netbsd man page]

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