169.254.1.68 wsockhost.mrouter 169.254.1.1 a925
First and foremost, you'll need a DNS. If the phone cannot resolve the host and domain wsockhost.mrouter it will disconnect from the computer. If you already have a DNS server, then you simply have to make sure wsockhost.mrouter resolves to the IP address of the computer end of the PPP connection. In this HOWTO we'll use 169.254.1.68 because that's what the Windows software m-Router uses. It is perfectly possible to use another IPi, should you decide to do so.
If you don't have a DNS then I propose you use the DNSMasq server. It is small and requires very little configuration. It works by reading the /etc/hosts file. Hence, any entry you put in there will be resolved by dnsmasqd when required. Add the following two to your /etc/hosts and start dnsmasqd
169.254.1.68 wsockhost.mrouter 169.254.1.1 a925
If you lookup wsockhost.mrouter and a925 they should resolve the their respective IP addresses. You can change a925 to whatever you wish to call your phone.
Next, you have to enable the Bluetooth subsystem in your kernel. You will find that under Device Drivers -> Networking support. Apart from the correct device driver (if you're unsure of which driver to use, then take a look at this chart) for your BT hardware, you will also need to enable the L2CAP protocol (CONFIG_BT_L2CAP) and the RFCOMM protocol (CONFIG_BT_RFCOMM).
Once that is done, compile and install the new kernel, and, if necessary, reboot.
Now, it's time to install the BlueZ Bluetooth stack. Either you find packages prebuilt for your distribution, or you can grab the source code from http://www.bluez.org. Install all the libraries and tools. Once installed, make sure the drivers you just compiled in the kernel are running (either you compiled them directly into your kernel, or you compiled them as modules, in which case you have to modprobe them before going any further).
You can see if Linux has detected your Bluetooth adapter by issuing the following commands
$ sudo /usr/sbin/hciconfig hci0 up $ sudo /usr/sbin/hciconfig hci0
You should see something like:
hci0: Type: USB BD Address: DE:AD:BE:EF:00:00 ACL MTU: 192:8 SCO MTU: 64:8 UP RUNNING PSCAN ISCAN RX bytes:273210 acl:3996 sco:0 events:8996 errors:0 TX bytes:627753 acl:6776 sco:0 commands:2238 errors:0
If you are instead told Can't get device: No such file, that means the device driver for your Bluetooth controller isn't loaded.
Open up /etc/bluetooth/hcid.conf with your favourite text editor and set the name variable in the device section to something imaginative. This is the name your computer will use to identify itself to other Bluetooth enabled devices.
Next up is fixing the PIN for pairing the phone with your computer. No matter what I did, I simply could not get the program bluepin to work. If it works for you, then that's great, but I found a solution on a webpage that was as silly as it was simple. Start by making a script with the following content:
#!/bin/sh cat /etc/bluetooth/pin
Make it executable and put it somewhere in your path, for example /usr/bin/. Set pin_helper to run the script instead of bluepin in hcid.conf. Also make sure security is set to user.
Next, open up /etc/bluetooth/pin in a text editor and put the following in it:
This will set the PIN of your computer to 1111. Feel free to change it at any time, but remember to keep the PIN:-part.
Now, we're just about set. Start hcid and make sure Bluetooth is enabled on your phone.
Pair your phone to your computer. Enter the PIN on the phone that you put in /etc/bluetooth/pin. The phone may say that the connection was unsuccessful, but will then add the computer anyway. This seems to be normal, since it works just as well for me.
Issue the command
$ sdptool browse
and wait for it to scan the proximity for other bluetooth devices. You should get something like this:
Inquiring ... Browsing 12:34:56:78:90:AB ... Service Name: Headset Gateway Service Service Description: Headset Gateway Service Service Provider: Symbian Service RecHandle: 0x10002 Service Class ID List: "Headset Audio Gateway" (0x1112) "Generic Audio" (0x1203) Protocol Descriptor List: "L2CAP" (0x0100) "RFCOMM" (0x0003) Channel: 1 Language Base Attr List: code_ISO639: 0x656e encoding: 0x6a base_offset: 0x100 Profile Descriptor List: "Headset" (0x1108) Version: 0x0100
Service Name: Epoc32:BTListener Service RecHandle: 0x10003 Service Class ID List: "OBEX Object Push" (0x1105) Protocol Descriptor List: "L2CAP" (0x0100) "RFCOMM" (0x0003) Channel: 2 "OBEX" (0x0008) Profile Descriptor List: "OBEX Object Push" (0x1105) Version: 0x0100
The Motorola A920/A925/A1000 uses PPP to connect to computers, regardless of whether it's through serial cable, USB cable, IR or BT. But before we start a listening PPP server on your computer, we need to start sdpd and create a Serial Port service. Do that by entering these commands:
sdpd sdptool add SP
Make sure it's registered by running the following:
sdptool browse FF:FF:FF:00:00:00
This will ask your local sdp daemon what services it's offering. Look for:
Service Name: Serial Port Service RecHandle: 0x804f4e0 Service Class ID List: "Serial Port" (0x1101) Protocol Descriptor List: "L2CAP" (0x0100) "RFCOMM" (0x0003) Channel: 1 Profile Descriptor List: "Serial Port" (0x1101) Version: 0x0100
Now it's time to fire up dund and see what happens;
/usr/bin/dund --listen --channel 1 --msdun noauth 169.254.1.68:169.254.1.1 460800 ms-dns 169.254.1.68 lock --persist --nodetach
The nodetach option makes sure that dund grabs the prompt and outputs any errors directly to the shell.
Make sure your phone is set to connect to a computer via Bluetooth in the Control panel. Then, click the Desktop Suite icon, and finally Connect. This may take anywhere from 1 to 15 seconds. Any longer, and there is probably something wrong. Anyway, if things actually worked, you should see something like this on your computer:
dund: Bluetooth DUN daemon dund: New connection from 12:34:56:78:90:AB Using interface ppp0 Connect: ppp0 <--> /dev/rfcomm0 kernel does not support PPP filtering Cannot determine ethernet address for proxy ARP local IP address 169.254.1.68 remote IP address 169.254.1.1
You should now be able to ping your phone from your computer. If that works, you're in business. Congratulations. Your phone is now connected to your computer via Bluetooth.
If you wish to use the Internet from your phone through Bluetooth you can do that by any of the two methods described below:
Click on the Telephone icon on the top of the display. Then, go in to Settings -> Network and change the band. Don't let it find a new operator (press Cancel). Now, the only way for the phone to connect to the Internet is through BT.
Simply remove the SIM card.
It is, however, not possible to set the phone in Flight mode, as that will also disable the Bluetooth functionality.
If you're not running your own recursive nameserver, it is also a good idea to specify another nameserver when starting dund. Otherwise your phone won't find any domain names besides wsockhost.mrouter. Just add another ms-dns entry. Let's say it's 126.96.36.199;
/usr/bin/dund --listen --channel 1 --msdun noauth 169.254.1.68:169.254.1.1 460800 ms-dns 169.254.1.68 ms-dns 188.8.131.52 lock --persist --nodetach
Of course, you will also have to set up IP forwarding and masquerading, but that's not covered in this HOWTO. Check out section 4.1 in this HOWTO: http://www.netfilter.org/documentation/HOWTO/NAT-HOWTO-4.html#ss4.1. Keep in mind that ppp0 in that HOWTO refers to the Internet connection. Exchange it for the network device you have connected to the Internet.
I'm running Slackware 10, and here's my rc.bluetooth script.
BlueZ by these excellent people
Motorola A920 under GNU/Linux by Henrik Brix Andersen
Connecting your 6600 to the Internet via Bluetooth and PPP under Linux by Ronald Lachenal
Microdot on Sweclockers.com discussion forum