From Forum Nokia Wiki

ID		Creation date	July 28, 2008
Platform	S60 2nd Edition FP 2, S60 3rd Edition	Tested on devices
Category	Python	Subcategory	Location Based Services

Keywords (APIs, classes, methods, functions): positioning

Overview

This code snippet explains how to use the positioning module to get information from an internal or external GPS module in Python.

Prerequisites

It is recommended to get a GPS lock at least once before using this code to maximize efficiency.

Code

import e32, appuifw, positioning
 
 
def gps_init():
	#This function will start the updating of global variable (dictionary) 'gps_data' every 0.2 sec.
	#0.2 sec comes form 'interval = 200000' set according to your needs
	#This function uses callback funtion gps
	global gps_data
	#First this fills the gps_data with 0.0 so that there is something before the first gps update
	gps_data = {
	'satellites': {'horizontal_dop': 0.0, 'used_satellites': 0, 'vertical_dop': 0.0, 'time': 0.0,'satellites': 0, 'time_dop':0.0}, 
	'position': {'latitude': 0.0, 'altitude': 0.0, 'vertical_accuracy': 0.0, 'longitude': 0.0, 'horizontal_accuracy': 0.0}, 
	'course': {'speed': 0.0, 'heading': 0.0, 'heading_accuracy': 0.0, 'speed_accuracy': 0.0}
	}
	try:
		positioning.select_module(positioning.default_module())
		positioning.set_requestors([{"type":"service","format":"application","data":"gps_app"}])
		positioning.position(course=1,satellites=1,callback=gps, interval=200000,partial=0)
		e32.ao_sleep(3)
	except:
		appuifw.note(u'Problem with GPS','error')
 
def gps(event):
	global gps_data
	gps_data = event
 
def gps_stop():
	#This function stops GPS
	try:
		positioning.stop_position()
	except:
		appuifw.note(u'Problem with GPS','error')
 
 
#Testing
gps_init()
count = 0
while True:
	count = count + 1
	sat = gps_data['satellites']['used_satellites']
	pos_lat = gps_data['position']['latitude']
	pos_long = gps_data['position']['longitude']
	speed = gps_data['course']['speed']
	print count, sat, pos_lat, pos_long,speed
	e32.ao_sleep(1)