Quick guide for creating and using gpsd on Raspberry Pi

Download wheezy image from here

start with settings for the local wifi system

update and upgrade the system

$ sudo apt-get update
$ sudo apt-get upgrade

plugin the usb gps and control the port

$ sudo lsusb
$ more /var/log/syslog

e.g. my ublox gps runs under /dev/ttyACM0

get the gpsd tools
$ sudo apt-get install gpsd gpsd-clients python-gps

start gpsd

$ sudo gpsd /dev/ttyACM0 -n -G -F /var/run/gpsd.sock

Local test with

$ cgps -s
stop gpsd

$ sudo killall gpsd

publish test data

$ gpsfake

now change the wifi system to an acces point

$ sudo apt-get install hostapd iw

try a mini configuration edit hostapd-minimal.conf
#change wlan0 to your wireless device

and test

$ sudo hostapd ./hostapd-minimal.conf
I got some problems in this situation:
invalid/unknown driver 'nl80211'

so I need to install and compile a new hostapd

$ wget http://w1.fi/releases/hostapd-2.0.tar.gz

$ tar xzvf hostapd-2.0.tar.gz

$ cd hostapd-2.0/hostapd

and these additional libs

$ sudo apt-get install libnl-dev
$ sudo apt-get install libssl-dev
and the clearing
$ modprobe mac80211

At the end when all is running set up your AFTrack with this gps settings:
- Gps Mode. Online
- Online Gps: ip of your raspi
- Online Gps Port: 2947
- Select TCP