I found two nice scripts for connecting to a BT GPS device. The developer was using it to display his path or to geotag some pictures that he took with his phone.

Lots of different application can be developed starting from this point, and anyway it is cool for fast prototyping purposes.

Tags: hack, Location Based Services, Python, Symbian

import socket

class BTReader:

    def connect(self):

        self.sock=socket.socket(socket.AF_BT,socket.SOCK_STREAM)

        address,services=socket.bt_discover()

        print “Discovered: %s, %s”%(address,services)

        target=(address,services.values()[0])

        print “Connecting to “+str(target)

        self.sock.connect(target)

   

    def readposition(self):

        try:

            while 1:

                buffer=””

                ch=self.sock.recv(1)

                while(ch!=’$’):

                    ch=self.sock.recv(1)

                while 1:

                    if (ch==’\r’):

                        break

                    buffer+=ch

                    ch=self.sock.recv(1)

                if (buffer[0:6]==”$GPGGA”):

                    (GPGGA,hhmmssss,l1ddmmmmmm,l1,l2dddmmmmmm,l2,q,xx,pp,ab,M,cd,M,xx,nnnn)=buffer.split(“,”)

                    return (l1+l1ddmmmmmm, l2+l2dddmmmmmm)

        except Error, e:

            return None

   

    def close(self):

        self.sock.close()

bt=BTReader()

bt.connect()

print bt.readposition()

print bt.readposition()

print bt.readposition()

bt.close()