GPS povezivanje/Ubuntu
and now to test the bluetooth:
hcitool scan
this should return a list of devices like:
00:16:4E:D7:AE:5F Nokia N70 00:12:62:AF:C0:6E Nino 00:11:67:80:41:96 BT-GPS
Step 2
With the bluetooth we need to create a serial connection between our GPS device and the computer
to do this we first need some information on the device; the MAC code and the serial port.
do a
hcitool scan
and take the MAC address of the GPS unit in my case:
00:16:4E7:AE:5F Nokia N70 00:12:62:AF:C0:6E Nino 00:11:67:80:41:96 BT-GPS
so i want: 00:11:67:80:41:96
to get the serial port do
sdptool browse 00:11:67:80:41:96
which will return
Browsing 00:11:67:80:41:96 ... Service Name: Bluetooth Serial Port Service RecHandle: 0x10007 Service Class ID List: "Serial Port" (0x1101) Protocol Descriptor List: "L2CAP" (0x0100) "RFCOMM" (0x0003) Channel: 1 Language Base Attr List: code_ISO639: 0x656e encoding: 0x6a base_offset: 0x100 Profile Descriptor List: "Serial Port" (0x1101) Version: 0x0100
the channel we want is 1
now create a file in /etc/bluetooth/ called rfcomm
sudo gedit /etc/bluetooth/rfcomm.conf
adding an entry:
rfcomm4 { bind yes; device < GPS MAC ADDRESS>; channel 1; comment "Serial Port"; }
to start using the GPS type:
rfcomm connect 4
if for some reason you get
"Can't create RFCOMM TTY: Address already in use"
do:
sudo rfcomm release 4
again followed by
rfcomm connect 4
that should display:
nino@laptop:~$ rfcomm connect 4 Connected /dev/rfcomm4 to 00:11:67:80:41:96 on channel 1 Press CTRL-C for hangup
any GPS software you are gonna use will make use of the /dev/rfcomm4
Step 3
Now to test the GPS install the GPS utils
sudo apt-get install gpsd-clients sudo apt-get install gpsd
the GPSD is the daemon for the GPS reciever so we want to bind the service with the device:
gpsd /dev/rfcomm4
and finally to see if were getting any information from the GPS device run
xgps