BTSCO(4) OpenBSD Programmer's Manual BTSCO(4)NAMEbtsco - Bluetooth SCO Audio
SYNOPSIS
btsco* at bthub?
audio* at audiobus?
DESCRIPTIONbtsco provides support for Bluetooth SCO Audio devices through the
audio(4) driver. btsco is configured at run time with the btdevctl
program.
The following properties are used by btsco during autoconfiguration:
local-bdaddr
Local device address.
remote-bdaddr
Remote device address.
service-name
btsco matches the `HF' and `HSET' services. For the `HF'
service, the btsco device will, on open(2), listen for incoming
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 shown below.
SCO connections require a baseband connection between the two devices
before they can be created. btsco 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)
btsco can be configured to act in Connect or Listen mode. In Connect
mode, it 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 ALSOioctl(2), audio(4), bluetooth(4)HISTORY
The btsco driver was written for NetBSD 4.0 by Iain Hibbert under the
sponsorship of Itronix, Inc.
BUGSbtsco takes no notice of the HCI Voice Setting in the Bluetooth
controller, and must be 0x0060 (the default) as alternate values are
currently unsupported.
OpenBSD 4.9 September 19, 2010 OpenBSD 4.9
