Many people seem to be having problems using a Bluetooth GPS with nav software on a Pocket PC. I have had a few issues and trawled the net looking for answers and there seems to be a lack of reference information on this. This forum is probably the best hope of getting a definitive reference document compiled.
My XDA Pro (Universal) did not have the GPS Settings control panel installed in Settings/Connections until I edited the registry to make it visible. Why was it not enabled originally? Does it not work?
What does GPS Settings actually do? (My premise is that it virtualises the GPS Com port is that right?)
I have set up my BT GPS to be on COM8 by adding a new Outgoing Port. Using GPS Settings-
in the Programs Tab set "Program Port:" to be COM1:
in the Hardware tab set "Hardware portP" to be COM8: (why no 38400 baud rate setting??)
Is it safe to assume that any program that wants to use the GPS should connect to the virtual port COM1: or the actual port COM8:?
From a software perspective when trying to configure a program to connect to a GPS invariably the software will offer a list of COM ports to use e.g......
VisualGPSce (a free GPS monitoring tool from www.visualgps.net) offers a set of COM ports and SER01-SER32. If I connect this to SER08: it works fine but when I look at the settings again it has changed them to COM1: - Drivers\BuiltIn\Serial_dbg. (I assume this is the affect of using the GPS Settings above). Interestingly if I choose an invalid port then choose COM1: it fails to connect until I select SER08: again!!
Fugawi offers COM1: - COM8: but only works when I select COM8: Is this 'not playing the game' because it is talking to the real port and not the 'virtual one'?
A friend has Pocket Nav (Memory Map) which only offers a set of COM ports COM1,2,3,6,7,9 (all of which are named with the kind of device except 7) and none of them work. Is this software only offering COM ports that it believes to be active? It also seems to be not playing the virtual port game (If my premise above is correct). Why doesn't it see the GPS on COM8:?
Sorry for the long posts - lots of questions, a few suppositions and not many answers from me. I just hope the gurus who frequent this forum can provide some good technical answers which will benefit many frustrated (both by things not working but also through lack of techincal reference documentation) people.
Thanks
Clive
hi i'm experiencing the same problem, did you solve it ?
I can't find a useful COM port to connect to my java application using a Qtek 9000 with WM 5 and Creme JVM.
thank you.
I will surely spend a lot of time on this question in my forthcoming Bluetooth Bible (still don't know when to publish).
are you serious ..
or it was sarcastic ?
Yes, maybe i was not so clear writing my question, but i didn't want to write the same words clive_j wrote ...
I'm running a java application on a Qtek 9000 running Windows Mobile 5.1.1700 (build 14354.0.1.1) and using a Java Virtual Machine "Creme 4.12 for PocketPC".
While, via bluetooth manager, I'm able to connect my BTGPS (i.e. bluetooth GPS) only on COM0, or COM4, or COM8, my application can open only COM1, or COM2, or COM3, or COM6, or COM7, or COM9.
I configured GPS Settings on WM 5 just like clive_j did, and still i can't receive any data from the GPS, while VisualGPS can connect and receive data from SER08.
Did you have any idea ?
I found how to solve the problem.
don't know if menneisyys is interested.
Hello,
I am new to the forum and also the owner of an HTC Fuze. I have been playing around recently with the GPS on the phone and got me thinking. I live in NY and we have a CORS network of gps base stations that are fed by the use of ntrip.
I was wondering if their was any way to use the gps signal on my phone and the connection to this CORS network to give me sub inch accuracy on my phone...then not sure what I would do with it then. But I do live on a farm and I would like to see some type of precision agricultural use.
I guess I need a way to have the GPS on the phone talk with the GNSS internet radio and then give me spot on guidance and such.
Please let me know your thoughts or if I need to explain better.
Thanks,
Clayton
bump
bump. Any ideas? Anyone
Great idea cwrisrey !
That will save the cost of a geodetic device, which is many times the cost of a Fuze. Further, it will lead the accuracy of the buildin GPS into millimum class.
Not dig into this further, would you go further to tell these:
Is that CORS data encrypted?
Is that accessible through public internet or VPN?
Is there copy right or intellectuall property right issue involved? (I don't think so, but better make it clear first)
Once again, great idea. Please do remember to update this thread once you got any progress. Thanks.
More info
Hello wg5566,
This site would probably answer alot of your questions clearer than I could:
http://www6.nysdot.gov/spiderweb/frmIndex.aspx
* Is that CORS data encrypted?
-I don't believe so, I think that it is just a form of compression, to distribute across the internet.
* Is that accessible through public internet or VPN?
Yes, the NYS CORS anyway. It accessible from the public internet (although they require you to register with them) But I believe there are other free streams. I also believe it was modeled after being able to be sent threw GPRS.
* Is there copy right or intellectuall property right issue involved? (I don't think so, but better make it clear first)
-I believe the ntrip is based on a GNU, I think the source code is available. http://igs.bkg.bund.de/index_ntrip_down.htm
Windows CE version:
http://www.ilmb.gov.bc.ca/crgb/gsr/downloads/installGNSS.CAB
Please, let me know your thoughts...
Thanks,
Clayton
My fast thoughts:
First make sure there is no satisfied freeware currently available for WM.
If so please ask a moderator to move this to the development & hackings section. And Add tyis sentence on the title: Call for developers for revolutionary GPS app!
I'm sure somebody here can develop this. You know the geodetic device was invented many years ago with very weak profiles comparing to current WM devices. The hardware on our phone should be capable to deal with these calculations, and the WM Pro platform should be capable to support such an app. Anyway it should not be a biggy for many masters here. But it is a biggy for gps users with high accuracy demand for any reason.
Edit: Did you try install that wince cab on your phone? I think some of WINCE apps can just run on WM. Please backup your data first.
Edit2: I tried to install it on my device, at first it did not show up in start menu, then I found the cab just put files and shortcut in the folder names in French. But there is no registry involved in the cab. Only three files. And then program UI itself is in English. Just run the executable from the folder will go right out of the box. So please try it. I did not try to connect & loggin yet, due to not registered account.
Edit3: Looks like the cab is only access the data from internet, convert the data format and export the data, but we still need a geodetic/gps software to process/use the data.
Disclaimer: I attatched these three files for the only purppose of exchanging software developement infomation. Anybody if download it please do not use it for any purppose other than this. Thanx.
Some thoughts on the subject
Hi All,
The idea of using NTRIP to make a Windows Mobile GPS device sub-meter accurate crossed my mind. After some research I found this thread.
Unfortunately, I haven't been able to find any software capable of doing this. My idea is that it should be possible to accomplish this goal, using a combination of existing tools (which would be really cool!).
As wg5566 notes, there is a (WM) tool called GNSS Internet Radio, which is capable of downloading NTRIP corrections. It turns out this software works, but does have some flaws. Someone wrote another open source tool which is better (?), but unfortunately it isn't built for Windows Mobile (see: http://lefebure.com/software/).
More searching revealed a (dead?) project on codeplex: SharpGPS. It's an unfinished demo. It does however seem to be designed to do exactly what we're suggesting in this thread.
My idea: Completing the WM version of SharpGPS with parts of GNSS Internet radio / lefebure NTRIP client should result in a tool that's capable of upgrading a WM devices' gps signal to sub-meter accuracy through RTK/DGPS corrections over NTRIP.
Any ideas / suggestions about this?
It's already been done for the commercial market
Land surveyors, construction companies, and farmers use RTK GPS and RTK GNSS correction services on a regular basis. Some are free and some are paid subscription. They can be either NTRIP protocol with casters or individual TCP or UDP connections. Examples of software available are Carlson SurvCE and MicroSurvey. Read Carlson's support site for how they deal with the data flow using such networks on SurvCE (Windows Mobile and CE).
I have worked in land surveying using such equipment, and it generally requires dual frequency receivers, RTK corrections, and high quality antennas to achieve 1-2cm 95% CI horizontal precision. The current GPS chips in cell phones are only single frequency and so the best you could expect under ideal conditions is 2'-3' precision using some form of differential correction like WAAS or beacon or DGPS via NTRIP. Under average conditions, the precision will likely be in the 10-20' range. The dual frequency receivers take care of the large errors caused by radio waves traveling through the ionosphere.
Due to the limitations of batteries, antennas, and space for more chips in cellphones, the future of location accuracy will likely include some combination of GPS/GLONASS and cellular radio signal frequency timing calculations from cell towers. True Position, with its U-TDOA technology, is one example of measuring the time differences of cell phone radio waves using cell towers with known coordinates. Rumors (from surveying journals) have it that there are current patents in place that can allow for sub foot precision using such methods when sufficient cell towers are present for multilateration.
Has anyone found success on this topic? WM or Android...
Would be very interested, since there is a free NTRIP feed available in Switzerland... anyone?
*bump* it up
Been there still trying. Problem is no carrier phase off internal gps.
Grimli said:
Hi All,
The idea of using NTRIP to make a Windows Mobile GPS device sub-meter accurate crossed my mind. After some research I found this thread.
As wg5566 notes, there is a (WM) tool called GNSS Internet Radio, which is capable of downloading NTRIP corrections. It turns out this software works, but does have some flaws. Someone wrote another open source tool which is better (?), but unfortunately it isn't built for Windows Mobile (see: /lefebure.com/software/).
Click to expand...
Click to collapse
Lance lefebure is a really cool guy I'm sure he wouldn't have any problem building a wm version but it is going to takea lot more than that to get rtk to a cell phone.
Very good ,thanks.
Ed hardy bikini said:
Very good ,thanks.
Click to expand...
Click to collapse
If you are confused just ask questions and I will do my best to answer them. I am in the ag industry and deal with RTK networks and different ways of connecting them and tons of different gps units on a daily basis.
Look at this:
http://stakemill.wordpress.com/2010/07/19/ashtech-mobile-mapper-100-supports-esri-arcpad-10-0/
and this:
http://www.ashtech.com/-2359.kjsp?RH=1272644205746&RF=1270806507068
Is that still a phone !?
wg5566 said:
Look at this:
Is that still a phone !?
Click to expand...
Click to collapse
Nope PDA with support for external GPS with a builtin reciever that even sees glonass satellites (russian constelation). That was made specifically to do RTK mapping. It does have a GSM radio for data to connect to the cors.
Phone positioning using CORS
To perform a CORS (Network Reference correction we need a GGA stream from the GPS in your device. This allows us to remove the anomalies and provde the correction stream. As phones use a sirf II chip or similar they do not have input capability to output the NMEA stream to achieve this.
This one works great! it will connect to an Rtk receiver and get the nmea string from it or will use the internal GPS to be able to register on the CORS network. It will then stream the corrections over Bluetooth to a receiver or even a repeater radio. It won't however correct the internal GPS. http://antrip.dyndns.biz/Home/DownloadTrial
Hi,
I have Hero H7000 GSM phone with Android 2.2.1. Some application which using GPS data show speed approx. 1,9x higher then real speed. First my idea was about some mistake in sw - behaviour looks like as twice conversion from knots (nm/h) to km/h because (km/h = 1,852x nm/h)... But problem is generic for all applications using GPS data. I was use U-Blox app. for NMEA logging, and in RAW NMEA log zero speed is correctly received. But Android API provide 1,29m/s for applications. Do you have some idea where problem is locate? And idea about how to fix it?
Thanks
SDG
ACTUALIZATION: I made NMEA log (approx. 30km by car). In raw NMEA sentences captured by "u-center" is correct speed. Maximum is around 90km/h. But all applications using Android API show twice more. Please, do you have some idea about repair of this bug?
SDG
Hello community,
after many hours of research and different attempts to get ANT+ working with CM12.1 on my N9005 I want to start some kind of information exchange on XDA to bundle all previous experiences.
ANT+ is a low power bluetooth mode, which is used to connect professional sports/outdoor equipment like heart rate belts, speed or cadence sensors, powermeters and so on. BTLE (bluetooth low energy) mode is provided as an alternative, but most equipment manufacturers do no support BTLE because ANT+ is optimized for stability and durabiltiy and has some advantages over BTLE (i.e. optimized device protocols for lower energy expenditure).
There are two smartphone manufacturers out there which support ANT+ natively (depending on the built-in hardware) since some generations - Samsung and Sony. (I read about the OPO (One Plus One) got native ANT+ support in the meantime.)
The qualcomm edition of the Note 3 (N9005) uses a broadcom 4335 wifi/bluetooth chip which is capabable of ANT+. Samsung stock roms provide native ANT+ support but if you switch to a newer CM12.1 or CM13 rom (maybe because of the great performance or KNOX and other bloatware issues), you will unfortunately loose the native ANT+ support. The same goes for the S4 and S4 active too like mentioned in several threads and communities.
There were several attempts to get ANT+ working on CM12.1. One of te most important attempts was made by @christer12 which seemed to be successful:
http://review.cyanogenmod.org/#/c/110547/
http://review.cyanogenmod.org/#/c/110396/
Some days later he stated on his twitter page "ANT+ on hlte don't work properly, because ANT+ in cm-12.1 is not properly integrated for bcm4335.. =(".
ANT-wireless provides a kind of "reference architecture" for the inclusion of ANT+ in Android roms:
https://github.com/ant-wireless/ANT_in_Android
But when comparing this approach with the one used in Samsung stock roms there are some differences. Samsung does not use a native library called "libantradio.so". Their AntHALService (interface between vendor hardware drivers and common ANT+ software) is built on the broadcom SDK which uses the class package com.broadcom.bt (with it's own radio manager implementation). This package is integrated in the Samsung stock rom /system/framework folder as java archive (JAR).
So my intention was to switch to the samsung aproach and use the broadcom libraries (in combination with Samsung vendor libs) for a "custom" AntHalService. That worked out ok, but at the moment I'm experiencing some difficulties in testing. The virtual machine of my android studio does not support bluetooth out of the box and my device (CM12.1) show a runtime reference error (NoClassDefFoundError) while accessing the broadcom classes. All classes are in the APK/classpath but CM12.1 seems to behave differently.
As I'm interested in other experiences and new ideas I just wanted to start this thread.
Thanks in advance and regards,
B
Reserved
I found this very interesting thread of xda-user @iRant which shows neccesary changes in the CM mainline code and seems to be the base for the ANT+ support in CM11:
http://forum.xda-developers.com/hardware-hacking/hardware/ref-devices-ant-hardware-t2879990
https://android-review.googlesource.com/#/q/owner:"James+Bootsma"+status:open
This solutions implements - amongst others - some vendor specific functions/commands (*VS) in the Bluetooth stack which were missing in the mainline code.
https://play.google.com/store/apps/details?id=com.z2software.antplus
Wasn't it working ?
newintage said:
https://play.google.com/store/apps/details?id=com.z2software.antplus
Wasn't it working ?
Click to expand...
Click to collapse
Sorry for the late reply. I messed up my phones CSC and had to reflash my phone several times. ?
Thanks for the link. ? I found some posts concerning ANT+ enabler but they did contain inconsistent results. So I did a little research and recognized that the last update from 2015/12/20 seems to fix some CM problems. Reading that I bought the app to try it out myself.
Results:
In general it seems to be working, but not really reliable yet. I got some "adapter not detected" messages and had to reboot my phone two times to reactivate bluetooth again. I will send an e-mail to the developer to analyze the problems.
As CM is open source a "commit solution" should be more "integrated" but I could live with a workaround if it's really reliable.
I am very interested in this as I was using my tablet (Samsung tab pro 10.1) to connect to my Garmin via ANT+. Since using a CM based custom ROM there is no longer any support. I was using a custom ROM on my Note 3 that was based upon a stock samsung one that included support for ANT+. If it can be included there then why not on CM ROMS?
ANT+ enabler used to work for CM 12.1 , but then it stopped working , i just tried it again and not working. if you flash Teamsek V17 , it starts working, but anything after 17.2 and things stop working. I have NOT tried CM13. (I assume the result is the same)
Hi,
I am interested in creating a custom rom but I am unsure on where to start to with my experiments. I am aware that there are some threads out there outlinining how to compile lineageos but they are somewhat outdated and do not help me achieve the following:
I want to create a custom rom for a raspberry pi board the rom should:
use a GPS sensor and offer the values to the OS (i.e. an app should be able to get position data just as with a standard smartphone)
use other sensors e.g. accelerometer, barometer, temperature
have a battery sensor (sensing voltage level, if currently charging, ...)
be able to turn of / on GPS, (built-in) BLE & Wifi to save battery
possibly some thirdparty drivers for a DSI or SPI display
I am aware that some of the functionality might require writting custom code but unfortunately I have no clue on where to start. Also I am aware that there are more complex issues (e.g. having a GSM module) down the line.
Is there a guide or someone willing to help me with this?
Thanks in advance
martin.d said:
Is there a guide or someone willing to help me with this?
Click to expand...
Click to collapse
Did you already check if there's something in the Raspberry Pi forum?
Raspberry Pi
forum.xda-developers.com
Regards
Oswald Boelcke