Neo 1973 GPS

From Openmoko

(Difference between revisions)
Jump to: navigation, search
(linkchg)
m (-Documentation)
 
(26 intermediate revisions by 14 users not shown)
Line 1: Line 1:
The [[Neo 1973]] device contains an integrated '''GPS'''. The particular device
+
{{Neo1973}}
is marketed as an AGPS, and there is some [[Hardware:AGPS |
+
See [[GTA02_GPS|Here]] For information about the GPS in the Neo FreeRunner
discussion]] available as to what significance that "A" might have.
+
  
Note that the [[GTA02 GPS]] device contains u-blox ANTARIS 4 solution, you could find more hardware related information before GTA02 hardware page.
+
The smartphones contain an integrated GPS receiver. The devices used are marketed as Assisted GPS ('AGPS'). Performance requirements are defined in GSM/GPRS 3GPP TS 25.171, CDMA 3GPP2 C.S0036-0. There is some [[Hardware:AGPS | discussion]] available as to what significance that "A" might have.
  
Assisted GPS performance requirement also defined in GSM/GPRS 3GPP TS 25.171, CDMA 3GPP2 C.S0036-0<br>
+
The external antenna for the GPS uses an [http://en.wikipedia.org/wiki/MMCX MMCX] connector.  More information about external antennas on the [[GPS antennas for neo1973|GPS antennas page]]. The connector for the internal GPS antenna also uses an MMCX connector. The external connector is located on the side of FreeRunner.
  
=== GTA01 GPS driver (gllin) ===
+
The Neo 1973 used the [[Neo1973 hardware#AGPS|Hmamerhead]].
''Main article - [[gllin]]''
+
  
The GPS driver is available here: [http://3rdparty.downloads.openmoko.org/gllin/ http://3rdparty.downloads.openmoko.org/gllin/]. It is a command line tool that after starting writes the positioning data so that they can be read as if they were written to the file.
+
== Low level access ==
  
And here the Mail from Michael Shiloh [http://lists.openmoko.org/pipermail/community/2007-November/011916.html http://lists.openmoko.org/pipermail/community/2007-November/011916.html]
+
The Neo 1973 uses a separate userland driver to access the Hammerhead GPS. See this article for more information on this driver: [[gllin]]
  
There was an effort to write a Free Software
+
The gllin driver itself is available here: http://3rdparty.downloads.openmoko.org/gllin/
program that could be used instead of this binary-only program, but this stalled after the decision to change GPS chips in GTA02.
+
It can be run from a command line. It outputs the NMEA data stream from the Hammerhead chip on a pseudotty device, so that it can be read as if the data were coming in on a serial port.
 +
 
 +
Here is email from Michael Shiloh about it. http://lists.openmoko.org/pipermail/community/2007-November/011916.html
 +
 
 +
There was an effort to write a Free Software program that could be used instead of this binary-only program, but this stalled after the decision to change GPS chips in GTA02.
 +
The Iphone 3G uses the same GPS chip. It's not inconceivable that this might lead to further effort.
  
 
See [[Hammerhead/Protocol]] for details and the latest status.
 
See [[Hammerhead/Protocol]] for details and the latest status.
Line 21: Line 24:
 
Some scripts for those with the binary are on [[Manually_using_GPS]]
 
Some scripts for those with the binary are on [[Manually_using_GPS]]
  
Please see the important information on [[Gllin]]!
+
Please see the important information on [[gllin]]!
  
=== GTA02 GPS ===
+
== Using GPS ==
  
For detailed GTA02 u-blox 4 GPS information, please check here: [[GTA02 GPS]]
+
Aside from accessing the GPS data in applications programs running directly on the smartphone,
 +
you can also access the GPS data stream from another gadget such as a laptop.
  
To turn on the GPS, echo 1 to the file /sys/devices/platform/s3c2440-i2c/i2c-adapter/i2c-0/0-0073/neo1973-pm-gps.0/pwron
+
Here are a couple ways to do that. You can use a network connection to pull data from the gpsd daemon, or you can make the smartphone appear to be a generic Bluetooth-connected GPS receiver.
  
To read from the GPS, simply read /dev/ttySAC1.
+
Using gpsd requires a program that understands its protocol, such as GPSdrive.
 
+
Using Bluetooth would allow using just about any program that understands the NMEA protocol.
gpspipe -r 127.0.0.1 2947
+
 
+
gpspipe is in package gps-utils
+
 
+
{{Note|
+
cat /dev/ttySAC1
+
Produces the unknown msg*58 this doesn't happen with gpspipe}}
+
 
   
 
   
Before getting a fix, the GPS spits out lots of "$GPTXT,01,01,01,NMEA unknown msg*58", though these stop once a fix is obtained.
+
=== Using gpsd with a network connection ===
  
A position without a fix looks like:
+
This procedure depends upon being able to set up a network connection between your Neo and your laptop. The connection can be over either WiFi or USB cable.
* $GPGGA,235946.99,,,,,00,00,5.0,,M,0.0001999,M,0.0020199,*57
+
One with a fix:
+
* $GPGGA,065852.00,5613.022527,N,00306.725890,W,1,05,0.5,158.0,M,0.277000,M,-0.010
+
0515,*7A
+
  
(central Scotland)
+
First be sure you have gllin and gpsd installed.
  
--[[User:Speedevil|Speedevil]] 11:52, 7 April 2008 (CEST)
+
# On host type: '''nc -vvn -l -p 5000 > /tmp/nmeaNP''' (Host starts listening on port 5000 for GPS-signals and sends them to /tmp/nmeaNP)
 +
# On the Neo type:   '''nc 192.168.0.200 5000 < /dev/ttySAC1''' (Signals from device will be send to port 5000 on host.) If your host is connected to the neo via wifi, change the IP address in the command to the one of the host.
 +
# On the host PC install GPSD, your GPS is attached as /tmp/nmeaNP
 +
# start gpsd on host with: '''gpsd -p /tmp/nmeaNP'''
 +
# run your application! I used gpsdrive and it works better than my stand-alone GPS.
  
If you are having GPS problems with your freerunner, please document these on the page [[GPS Problems]].
+
Tested with RoadNav. Works great!
[[FreeRunner_GPS_antenna_repair_SOP]] documents a possible solution.
+
  
In Openmoko projects, you could find a GPS test program that could provide graphical and text dump of GPS information. This project called [http://svn.projects.openmoko.org/svnroot/openmoko-agpsui Openmoko AGPS UI project].
+
If you have an unlimited [[GPRS]] data package you could make your gpsd service accessible over the Internet. This opens up many possibilities. For example, you could implemented AVL (Automatic Vehicle Location) by having a web server somewhere query your gpsd server for your position and write it to a KML file which would then display your location on a Google map.
  
=== Possible GPS programs ===
+
=== Bluetooth GPS relay ===
  
As people develop more sophisticated GPS applications, please note them here.
+
Here is how to make your smartphone appear to be a Bluetooth GPS.
  
Here are some ideas for possibilities:
+
#Power up the bluetooth radio
 
+
#Run the gllin script
* Cairo-based mapping
+
#Run '''sdptool add SP'''
* Routing
+
#Run '''rfcomm watch 0 1 sh -c "cat /tmp/nmeaNP >/dev/rfcomm0" &'''
* [[Openstreetmap]] a map viewer, annotation, and editing system.
+
* [http://wiki.openstreetmap.org/index.php/Pyroute Pyroute] is a routing program written in Python by Ojw, and a mobile phone GUI for maps, GPS, and routing.
+
:* [http://wiki.openstreetmap.org/index.php/Rana Ran&aacute;] is the new version of pyroute
+
* [[GPS-Trail]] a simple trail logger.
+
* [[GPS_Navigation#roadmap|roadmap]] mapping system using freely available maps (US census TIGER, DGLib, shapefiles).
+
* [[Geocaching]] paper chase for advanced users
+
* Set Profile (Mute, etc.) to coordinates (ex. At work)
+
* [[qpegps]] qtopia (arm PDA) based map viewer with gps features
+
* [[Navit]] a car navigation system with routing engine.
+
* [http://www.tangogps.org TangoGPS] works very well, downloads maps on demand and stores them for later use, very efficient.
+
* [[QMapControl]] Qtopia based mapping widget. Displays maps and custom data, also other widgets can be bound to coordinates. GPS parser for the gllin output included.
+
* [http://lists.openmoko.org/pipermail/community/2007-July/007252.html collection of ideas]
+
* [http://www.kflog.org/cumulus/ Cumulus] GPS software for glider pilots (and pilots in general), has a port for Qtopia and pulls (world) maps from the KFLog flight planner project. I think someone has put a project like this on the projects website [http://projects.openmoko.org/projects/openvario/ here].
+
* [http://svn.projects.openmoko.org/svnroot/openmoko-agpsui Openmoko AGPS UI project].
+
* [[GPS Sight]], a popular Openmoko project under LGPL.
+
* [[Orrery]], an unpopular Openmoko project for displaying the night sky.
+
* [http://wiki.openstreetmap.org/index.php/Gosmore Gosmore] is a routing and viewer of OSM XML data such as the planet.osm.
+
 
+
== Using the Neo's GPS on a Laptop ==
+
 
+
*First be sure you have gllin installed on the Neo.
+
*On host type: '''nc -vvn -l -p 5000 > /tmp/nmeaNP'''
+
*On the Neo type:  '''nc 192.168.0.200 5000 < /tmp/nmeaNP'''
+
*
+
*On the host PC install GPSD, your GPS is attached as /tmp/nmeaNP
+
*start gpsd on host with: '''gpsd -p /tmp/nmeaNP'''
+
*run your application! I used gpsdrive and it works better than my stand-alone GPS.
+
*Tested with RoadNav.Works great!
+
*
+
*With this in mind if you have an unlimited data package you could export this over the internet.
+
*the possibilities are limitless. 
+
 
+
== Bluetooth GPS relay ==
+
 
+
To make your neo appear like a regular bluetooth GPS:
+
 
+
*Power up the bluetooth radio
+
*Run the gllin script
+
*run '''sdptool add SP'''
+
*run '''rfcomm watch 0 1 sh -c "cat /tmp/nmeaNP >/dev/rfcomm0" &'''
+
  
 +
== GPS applications ==
 +
{{main|GPS applications}}
  
 
[[Category:GPS]]
 
[[Category:GPS]]
 
[[category:Documentation]]
 
 
[[category:Standard]]
 
[[category:Standard]]

Latest revision as of 21:15, 12 September 2008

Neo 1973
sold out

(Other phones)

See Here For information about the GPS in the Neo FreeRunner

The smartphones contain an integrated GPS receiver. The devices used are marketed as Assisted GPS ('AGPS'). Performance requirements are defined in GSM/GPRS 3GPP TS 25.171, CDMA 3GPP2 C.S0036-0. There is some discussion available as to what significance that "A" might have.

The external antenna for the GPS uses an MMCX connector. More information about external antennas on the GPS antennas page. The connector for the internal GPS antenna also uses an MMCX connector. The external connector is located on the side of FreeRunner.

The Neo 1973 used the Hmamerhead.

Contents

[edit] Low level access

The Neo 1973 uses a separate userland driver to access the Hammerhead GPS. See this article for more information on this driver: gllin

The gllin driver itself is available here: http://3rdparty.downloads.openmoko.org/gllin/ It can be run from a command line. It outputs the NMEA data stream from the Hammerhead chip on a pseudotty device, so that it can be read as if the data were coming in on a serial port.

Here is email from Michael Shiloh about it. http://lists.openmoko.org/pipermail/community/2007-November/011916.html

There was an effort to write a Free Software program that could be used instead of this binary-only program, but this stalled after the decision to change GPS chips in GTA02. The Iphone 3G uses the same GPS chip. It's not inconceivable that this might lead to further effort.

See Hammerhead/Protocol for details and the latest status.

Some scripts for those with the binary are on Manually_using_GPS

Please see the important information on gllin!

[edit] Using GPS

Aside from accessing the GPS data in applications programs running directly on the smartphone, you can also access the GPS data stream from another gadget such as a laptop.

Here are a couple ways to do that. You can use a network connection to pull data from the gpsd daemon, or you can make the smartphone appear to be a generic Bluetooth-connected GPS receiver.

Using gpsd requires a program that understands its protocol, such as GPSdrive. Using Bluetooth would allow using just about any program that understands the NMEA protocol.

[edit] Using gpsd with a network connection

This procedure depends upon being able to set up a network connection between your Neo and your laptop. The connection can be over either WiFi or USB cable.

First be sure you have gllin and gpsd installed.

  1. On host type: nc -vvn -l -p 5000 > /tmp/nmeaNP (Host starts listening on port 5000 for GPS-signals and sends them to /tmp/nmeaNP)
  2. On the Neo type: nc 192.168.0.200 5000 < /dev/ttySAC1 (Signals from device will be send to port 5000 on host.) If your host is connected to the neo via wifi, change the IP address in the command to the one of the host.
  3. On the host PC install GPSD, your GPS is attached as /tmp/nmeaNP
  4. start gpsd on host with: gpsd -p /tmp/nmeaNP
  5. run your application! I used gpsdrive and it works better than my stand-alone GPS.

Tested with RoadNav. Works great!

If you have an unlimited GPRS data package you could make your gpsd service accessible over the Internet. This opens up many possibilities. For example, you could implemented AVL (Automatic Vehicle Location) by having a web server somewhere query your gpsd server for your position and write it to a KML file which would then display your location on a Google map.

[edit] Bluetooth GPS relay

Here is how to make your smartphone appear to be a Bluetooth GPS.

  1. Power up the bluetooth radio
  2. Run the gllin script
  3. Run sdptool add SP
  4. Run rfcomm watch 0 1 sh -c "cat /tmp/nmeaNP >/dev/rfcomm0" &

[edit] GPS applications

Main article: GPS applications
Personal tools

The Neo 1973 device contains an integrated GPS. The particular device is marketed as an AGPS, and there is some discussion available as to what significance that "A" might have.

Note that the GTA02 GPS device contains u-blox ANTARIS 4 solution, you could find more hardware related information before GTA02 hardware page.

Assisted GPS performance requirement also defined in GSM/GPRS 3GPP TS 25.171, CDMA 3GPP2 C.S0036-0

GTA01 GPS driver (gllin)

Main article - gllin

The GPS driver is available here: http://3rdparty.downloads.openmoko.org/gllin/. It is a command line tool that after starting writes the positioning data so that they can be read as if they were written to the file.

And here the Mail from Michael Shiloh http://lists.openmoko.org/pipermail/community/2007-November/011916.html

There was an effort to write a Free Software program that could be used instead of this binary-only program, but this stalled after the decision to change GPS chips in GTA02.

See Hammerhead/Protocol for details and the latest status.

Some scripts for those with the binary are on Manually_using_GPS

Please see the important information on Gllin!

GTA02 GPS

For detailed GTA02 u-blox 4 GPS information, please check here: GTA02 GPS

To turn on the GPS, echo 1 to the file /sys/devices/platform/s3c2440-i2c/i2c-adapter/i2c-0/0-0073/neo1973-pm-gps.0/pwron

To read from the GPS, simply read /dev/ttySAC1.

gpspipe -r 127.0.0.1 2947

gpspipe is in package gps-utils

NOTE:
cat /dev/ttySAC1 

Produces the unknown msg*58 this doesn't happen with gpspipe


Before getting a fix, the GPS spits out lots of "$GPTXT,01,01,01,NMEA unknown msg*58", though these stop once a fix is obtained.

A position without a fix looks like:

  • $GPGGA,235946.99,,,,,00,00,5.0,,M,0.0001999,M,0.0020199,*57

One with a fix:

  • $GPGGA,065852.00,5613.022527,N,00306.725890,W,1,05,0.5,158.0,M,0.277000,M,-0.010

0515,*7A

(central Scotland)

--Speedevil 11:52, 7 April 2008 (CEST)

If you are having GPS problems with your freerunner, please document these on the page GPS Problems. FreeRunner_GPS_antenna_repair_SOP documents a possible solution.

In Openmoko projects, you could find a GPS test program that could provide graphical and text dump of GPS information. This project called Openmoko AGPS UI project.

Possible GPS programs

As people develop more sophisticated GPS applications, please note them here.

Here are some ideas for possibilities:

  • Cairo-based mapping
  • Routing
  • Openstreetmap a map viewer, annotation, and editing system.
  • Pyroute is a routing program written in Python by Ojw, and a mobile phone GUI for maps, GPS, and routing.
  • Raná is the new version of pyroute
  • GPS-Trail a simple trail logger.
  • roadmap mapping system using freely available maps (US census TIGER, DGLib, shapefiles).
  • Geocaching paper chase for advanced users
  • Set Profile (Mute, etc.) to coordinates (ex. At work)
  • qpegps qtopia (arm PDA) based map viewer with gps features
  • Navit a car navigation system with routing engine.
  • TangoGPS works very well, downloads maps on demand and stores them for later use, very efficient.
  • QMapControl Qtopia based mapping widget. Displays maps and custom data, also other widgets can be bound to coordinates. GPS parser for the gllin output included.
  • collection of ideas
  • Cumulus GPS software for glider pilots (and pilots in general), has a port for Qtopia and pulls (world) maps from the KFLog flight planner project. I think someone has put a project like this on the projects website here.
  • Openmoko AGPS UI project.
  • GPS Sight, a popular Openmoko project under LGPL.
  • Orrery, an unpopular Openmoko project for displaying the night sky.
  • Gosmore is a routing and viewer of OSM XML data such as the planet.osm.

Using the Neo's GPS on a Laptop

  • First be sure you have gllin installed on the Neo.
  • On host type: nc -vvn -l -p 5000 > /tmp/nmeaNP
  • On the Neo type: nc 192.168.0.200 5000 < /tmp/nmeaNP
  • On the host PC install GPSD, your GPS is attached as /tmp/nmeaNP
  • start gpsd on host with: gpsd -p /tmp/nmeaNP
  • run your application! I used gpsdrive and it works better than my stand-alone GPS.
  • Tested with RoadNav.Works great!
  • With this in mind if you have an unlimited data package you could export this over the internet.
  • the possibilities are limitless.

Bluetooth GPS relay

To make your neo appear like a regular bluetooth GPS:

  • Power up the bluetooth radio
  • Run the gllin script
  • run sdptool add SP
  • run rfcomm watch 0 1 sh -c "cat /tmp/nmeaNP >/dev/rfcomm0" &