Testing bluetooth device: Virtual HCI device

Testing bluetooth device: Virtual HCI device

[Neeraj kushwaha]

Hi All,

I have started to learn BT and to see how it works. I want to test
bluetooth from Virtual HCI device.

I did following steps but still could not get through.

# modprove hci_vhci
Kernel: Bluetooth: Virtual HCI driver ver 1.2

# ls -l /dev/vhci
crw-rw---- 1 root root 10,58 2009-08-21 11:22 /dev/vhci

# hciemu localhost:10
# hciemu localhost:11

# hciconfig hci0 up
# hciconfig hci1 up

# hciconfig -a
hci0:   Type: VIRTUAL
       BD Address: 7F:00:00:01:00:0A ACL MTU: 192:8 SCO MTU: 0:0
       UP RUNNING
       RX bytes:0 acl:0 sco:0 events:35 errors:0
       TX bytes:681 acl:0 sco:0 commands:35 errors:0
       Features: 0xff 0xff 0x8f 0xfe 0x9b 0xf9 0x00 0x80
       Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
       Link policy:
       Link mode: SLAVE ACCEPT
       Name: 'BlueZ (0)'
       Class: 0x4a0100
       Service Classes: Networking, Capturing, Telephony
       Device Class: Computer, Uncategorized
       HCI Ver: 2.0 (0x3) HCI Rev: 0x0 LMP Ver: 2.0 (0x3) LMP Subver: 0x0
       Manufacturer: Qualcomm (29)

hci1:   Type: VIRTUAL
       BD Address: 7F:00:00:01:00:0B ACL MTU: 192:8 SCO MTU: 0:0
       UP RUNNING
       RX bytes:0 acl:0 sco:0 events:34 errors:0
       TX bytes:680 acl:0 sco:0 commands:34 errors:0
       Features: 0xff 0xff 0x8f 0xfe 0x9b 0xf9 0x00 0x80
       Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
       Link policy:
       Link mode: SLAVE ACCEPT
       Name: 'BlueZ (1)'
       Class: 0x4a0100
       Service Classes: Networking, Capturing, Telephony
       Device Class: Computer, Uncategorized
       HCI Ver: 2.0 (0x3) HCI Rev: 0x0 LMP Ver: 2.0 (0x3) LMP Subver: 0x0
       Manufacturer: Qualcomm (29)

# l2ping 7F:00:00:01:00:0B
Can't connect: Connection refused



Pl. tell me how to get it working, as this would help to get starton BT.


Thanks & Regards,
Neeraj

Re: Testing bluetooth device: Virtual HCI device

[Marcel Holtmann]

Hi Neeraj,

> I have started to learn BT and to see how it works. I want to test
> bluetooth from Virtual HCI device.
> 
> I did following steps but still could not get through.
> 
> # modprove hci_vhci
> Kernel: Bluetooth: Virtual HCI driver ver 1.2
> 
> # ls -l /dev/vhci
> crw-rw---- 1 root root 10,58 2009-08-21 11:22 /dev/vhci
> 
> # hciemu localhost:10
> # hciemu localhost:11
> 
> # hciconfig hci0 up
> # hciconfig hci1 up
> 
> # hciconfig -a
> hci0:   Type: VIRTUAL
>        BD Address: 7F:00:00:01:00:0A ACL MTU: 192:8 SCO MTU: 0:0
>        UP RUNNING
>        RX bytes:0 acl:0 sco:0 events:35 errors:0
>        TX bytes:681 acl:0 sco:0 commands:35 errors:0
>        Features: 0xff 0xff 0x8f 0xfe 0x9b 0xf9 0x00 0x80
>        Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
>        Link policy:
>        Link mode: SLAVE ACCEPT
>        Name: 'BlueZ (0)'
>        Class: 0x4a0100
>        Service Classes: Networking, Capturing, Telephony
>        Device Class: Computer, Uncategorized
>        HCI Ver: 2.0 (0x3) HCI Rev: 0x0 LMP Ver: 2.0 (0x3) LMP Subver: 0x0
>        Manufacturer: Qualcomm (29)
> 
> hci1:   Type: VIRTUAL
>        BD Address: 7F:00:00:01:00:0B ACL MTU: 192:8 SCO MTU: 0:0
>        UP RUNNING
>        RX bytes:0 acl:0 sco:0 events:34 errors:0
>        TX bytes:680 acl:0 sco:0 commands:34 errors:0
>        Features: 0xff 0xff 0x8f 0xfe 0x9b 0xf9 0x00 0x80
>        Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
>        Link policy:
>        Link mode: SLAVE ACCEPT
>        Name: 'BlueZ (1)'
>        Class: 0x4a0100
>        Service Classes: Networking, Capturing, Telephony
>        Device Class: Computer, Uncategorized
>        HCI Ver: 2.0 (0x3) HCI Rev: 0x0 LMP Ver: 2.0 (0x3) LMP Subver: 0x0
>        Manufacturer: Qualcomm (29)
> 
> # l2ping 7F:00:00:01:00:0B
> Can't connect: Connection refused

the hciemu was never a full Bluetooth emulation. So some things might
work and others don't. Bluetooth USB dongles are so cheap these days
that everybody tests with real hardware.

Regards

Marcel