Difference between revisions of "Bluetooth"

Revision as of 14:07, 13 April 2010

Page under construction... Informations on this page are not guaranteed !!

This page will give you all the informations needed to have a running Bluetooth configuration on your Armadeus board.

Hardware

First you have to get a compatible hardware. Currently there are 3 solutions:

• Get a Wireless extension board from armadeus systems (only available for APF27)
• Get a cheap USB<->Bluetooth adapter (requires an USB Host port)
• Get a RS232<->Bluetooth adapter

Tested hardware

Model	Status APF9328 / APF27		Chipset	Comments
BELKIN - Mini Bluetooth Adapter	TBT	KO	Product: BLUETOOTH USB +EDR ADAPTER v2.1 UHE Manufacturer: Broadcom Corp	# hciconfig hci1 up piscan btusb_submit_intr_urb: hci1 urb c3bdac40 submission failed (28) Can't init device hci1: Input/output error (5)
TRUST - Bluetooth 2.1 USB Adapter	TBT	KO	Product: BCM2046B1 Manufacturer: Broadcom	# hciconfig hci1 up piscan btusb_submit_intr_urb: hci1 urb c3bdac40 submission failed (28) Can't init device hci1: Input/output error (5)
RUEDUCOMMERCE - Mini adaptateur USB Bluetooth	TBT	OK	Manufacturer: Cambridge Silicon Radio
GIGABYTE - GN-BTD01	TBT	OK	Manufacturer: Cambridge Silicon Radio	Bluetooth 1.1 ?
BELKIN - F8T003 v2	TBT	OK	Manufacturer: Cambridge Silicon Radio

Software

Bluetooth Linux stack is divided into several parts:

• kernel drivers
• userland libraries/daemon (bluez)

Driver installation

• (Done by default on APF27)

$ make linux26-menuconfig

[*] Networking support  --->
    <M>   Bluetooth subsystem support  --->
        --- Bluetooth subsystem support
            <M>   L2CAP protocol support 
            <M>   SCO links support
            <M>   RFCOMM protocol support
                [*]     RFCOMM TTY support
            <M>   BNEP protocol support
                [ ]     Multicast filter support (NEW)
                [ ]     Protocol filter support (NEW)
            <M>   HIDP protocol support
            Bluetooth device drivers  --->
                <M> HCI USB driver 
                < > HCI SDIO driver (NEW)
                <M> HCI UART driver
                    [*]   UART (H4) protocol support 
                    [*]   BCSP protocol support 
                    [ ]   HCILL protocol support (NEW)
                < > HCI BCM203x USB driver (NEW)
                < > HCI BPA10x USB driver (NEW)
                < > HCI BlueFRITZ! USB driver (NEW)
                < > HCI VHCI (Virtual HCI device) driver (NEW)

$ make

Bluez installation

$ make menuconfig

Package Selection for the target  --->
    ...
    [*] XML handling  --->
        [*]   libxml2
    ...
    [*] Hardware handling / blockdevices and filesystem maintenance  --->
        [*]   dbus
              XML library to use (libxml2)
    ...
    *** Armadeus specific packages ***
    [*] bluez

$ make

Usage

Bring up

• Make sure your hardware is connected to the APF. If using an USB dongle, load corresponding driver:

# modprobe btusb
Bluetooth: Core ver 2.14
NET: Registered protocol family 31
Bluetooth: HCI device and connection manager initialized
Bluetooth: HCI socket layer initialized
Bluetooth: Generic Bluetooth USB driver ver 0.4
usbcore: registered new interface driver btusb

• Check if Bluetooth interface was detected:

# hciconfig
hci0:   Type: USB
        BD Address: 00:00:00:00:00:00 ACL MTU: 0:0 SCO MTU: 0:0
        DOWN
        RX bytes:0 acl:0 sco:0 events:0 errors:0
        TX bytes:0 acl:0 sco:0 commands:0 errors:0

• If interface is DOWN, bring it up:

# hciconfig hci0 up piscan

• Check your Bluetooth device is correctly initialized:

# hcitool dev
Devices:
        hci0    00:10:60:D1:92:0F

Terminal through bluetooth

On the APF :

• the first step is to create the corresponding node for the future connection :

# mknod /dev/rfcomm0 c 216 0

• next, create an incomming connection, on the rfcomm0 channel 7 :

# rfcomm -i hci0 listen /dev/rfcomm0 7&

• and the last step, when the connection is open, is to connect a terminal (through getty) to the node /dev/rfcomm0 :

# getty 38400 /dev/rfcomm0

On the PC :

• after the two first steps on the APF, you need to connect the PC to the APF with the same channel :

# rfcomm connect 0 addr 7

• and configure minicom :

pu port             /dev/rfcomm0
pu baudrate         38400
pu bits             8
pu parity           N
pu stopbits         1

• when getty is running on the APF, you could you connect with minicom.

Scanning network

# hcitool scan
Scanning ...

Links

• http://www.bluez.org/
• http://www.hanscees.com/bluezhowto.html
• Dongle USB<->Bluetooth supportés sous Ubuntu
• GLMF n°88 - Bluetooth, installation et utilisation
• GLMF n°95 - Communication de données et d'images issues de la carte Fox par Bluetooth