VAR-SOM-MX6 Bluetooth: Difference between revisions

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{{PageHeader|VAR-SOM-MX6 - Bluetooth}} {{DocImage|category1=VAR-SOM-MX6|category2=Yocto}} __toc__
#REDIRECT [[IMX Bluetooth]]
 
{{PageHeader|Unit Testing}} {{DocImage|category1=VAR-SOM-MX6|category2=Yocto}} __toc__
 
= Bluetooth boot messages =
 
During boot the following Bluetooth kernel messages are received:
<pre>$ dmesg | grep -i bluetooth
[    0.233230] Bluetooth: Core ver 2.18
[    0.233273] Bluetooth: HCI device and connection manager initialized
[    0.233286] Bluetooth: HCI socket layer initialized
[    0.233298] Bluetooth: L2CAP socket layer initialized
[    0.233331] Bluetooth: SCO socket layer initialized
[    1.963274] Bluetooth: HCI UART driver ver 2.2
[    1.966442] Bluetooth: HCI H4 protocol initialized
[    1.969938] Bluetooth: HCI BCSP protocol initialized
[    1.973606] Bluetooth: HCILL protocol initialized
[    1.977029] Bluetooth: HCI Three-wire UART (H5) protocol initialized
[    3.313905] Bluetooth: RFCOMM TTY layer initialized
[    3.317503] Bluetooth: RFCOMM socket layer initialized
[    3.321376] Bluetooth: RFCOMM ver 1.11
[    3.323859] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[    3.327876] Bluetooth: BNEP filters: protocol multicast
[    3.331814] Bluetooth: BNEP socket layer initialized
[    3.335498] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
[    3.340131] Bluetooth: HIDP socket layer initialized </pre>
 
= Device identification =
 
After the File system is up 'hciconfig' should show the connected bluetooth module.
<pre>root@var-som-mx6:~# hciconfig
hci0:  Type: BR/EDR  Bus: UART
        BD Address: 50:72:24:11:EF:B0  ACL MTU: 1021:6  SCO MTU: 180:4
        UP RUNNING PSCAN
        RX bytes:701 acl:0 sco:0 events:44 errors:0
        TX bytes:2233 acl:0 sco:0 commands:44 errors:0
</pre>
The hcitool can be used to show the Bluetooth MAC address of the Bluetooth module with the respective hci connection. Type help to show commands.
<pre>root@var-som-mx6:~# hcitool dev
Devices:
        hci0    50:72:24:11:EF:B0
</pre>
 
= Managing bluetooth =
 
You can manage bluetooth with bluetoothctl, type 'bluetoothctl' and enter the interface. Type help to show commands.</br>
For connecting a device do the following:</br>
<pre>
$ bluetoothctl
[bluetooth]# power on
[bluetooth]# default-agent
[bluetooth]# pairable on
 
Push the connect button in the device
 
[bluetooth]# scan on
 
Copy mac address
 
[bluetooth]# scan off
[bluetooth]# pair <mac address>
 
Approve pairing on Device if required
 
[bluetooth]# trust <mac address>
[bluetooth]# connect <mac address>
[bluetooth]# quit
</pre>
 
For example when connecting a microsoft bluetooth mouse the following is done:</br>
<pre>
root@var-som-mx6:~# bluetoothctl
[NEW] Controller 50:72:24:11:EF:B0 BlueZ 5.28 [default]
[bluetooth]# power on
Changing power on succeeded
[bluetooth]# default-agent
No agent is registered
[bluetooth]# pairable on
Changing pairable on succeeded
[bluetooth]# scan on
Discovery started
[CHG] Controller 50:72:24:11:EF:B0 Discovering: yes
[NEW] Device 00:1D:D8:39:93:46 Microsoft Bluetooth Notebook Mouse 5000
[bluetooth]# scan off
[CHG] Device 00:1D:D8:39:93:46 RSSI is nil
Discovery stopped
[CHG] Controller 50:72:24:11:EF:B0 Discovering: no
[bluetooth]# pair 00:1D:D8:39:93:46
Attempting to pair with 00:1D:D8:39:93:46
[CHG] Device 00:1D:D8:39:93:46 Connected: yes
[CHG] Device 00:1D:D8:39:93:46 Modalias: usb:v045Ep0700d0100
[CHG] Device 00:1D:D8:39:93:46 UUIDs:
        00001000-0000-1000-8000-00805f9b34fb
        00001124-0000-1000-8000-00805f9b34fb
        00001200-0000-1000-8000-00805f9b34fb
[CHG] Device 00:1D:D8:39:93:46 Paired: yes
Pairing successful
[CHG] Device 00:1D:D8:39:93:46 Connected: no
[bluetooth]# trust 00:1D:D8:39:93:46
[CHG] Device 00:1D:D8:39:93:46 Trusted: yes
Changing 00:1D:D8:39:93:46 trust succeeded
[bluetooth]# connect 00:1D:D8:39:93:46
Attempting to connect to 00:1D:D8:39:93:46
[CHG] Device 00:1D:D8:39:93:46 Connected: yes
[bluetooth]# hid-generic 0005:045E:0700.0001: unknown main item tag 0x0
input: Microsoft Bluetooth Notebook Mouse 5000 as /devices/soc0/soc.0/2100000.aips-bus/21e8000.serial/tty/ttymxc1/hci0/hci0:1/0005:045E:0700.0001/input/input1
Connection successful
[bhid-generic 0005:045E:0700.0001: input: BLUETOOTH HID v1.00 Mouse [Microsoft Bluetooth Notebook Mouse 5000] on 50:72:24:11:ef:b0
[bluetooth]# quit
[DEL] Controller 50:72:24:11:EF:B0 BlueZ 5.28 [default]
root@var-som-mx6:~#
 
</pre>
 
= File Transfer =
 
Sending a file from the board to the bluetooth device using the obex transfer.
 
1) First, establish connection to the device as described above.</br>
2) Start obex daemon and obexctl. Type help to show commands. <pre>
$ export DISPLAY=:0.0
$ /usr/lib/bluez5/bluetooth/obexd &
$ obexctl
</pre>
3) connect to Device 
<pre>[obex]# connect <mac addr>
</pre>
4) Send a file from obexctl to the device 
<pre>[<mac addr>]# send <file>
</pre>
5) Once it's done, close the session <pre>
[<mac addr>]# disconnect
[<mac addr>]# quit
</pre>

Latest revision as of 14:25, 5 September 2016

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