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Hi all,
I am for Uni looking into using a GPS device (just a receiver) to pass your location to a PDA and with some work on some software on the device do some calculations and useful stuff re where you have gone, how fast etc. But the app on the PDA must be custom written
All i need from the GPS device is location (in longitude+latitude?) and this would be queried about every second.
a) how easy is it to get such an output from a receiver without a lot of premade software overhead?
b) just how accurate can GPS be? i read about 10m but down to 2/3m with WAAS?
c) anyone know of any good documentation on using GPS output for a PDA app?
d) any advice on good GPS devices that can do just this but as accurately as poss. i hear about the ability to get down to a few inches but this isnt publically available? (maybe wrong there)
any help or pointers would be very, very much appreciated.
Andy
Most GPS units send navigation data using the NMEA 0183 protocol, which is text-based (and thus easily parsable). Since you mention the XDA mini exec, I assume you're looking at Bluetooth GPS units -- these units will look like a COM port to the XDA, so you can use standard serial comms code to receive the NMEA data.
If you look around the net (e.g. google, sourceforge.net) you should be able to find a number of Windows applications that do what you want. Most of them will have been written for big Windows, but should be easily portable to the XDA platform.
I'm a Desktop .Net developer with NO bluetooth experience and only a bit of low-level networking experience so I'm speaking from limited knowledge, but not complete ignorance.
I use my phone as an A2DP source and AVRCP client for quite a few devices (Jabra JX20 Pura, Jabra BT3030, Windows Vista, various BT speaker systems) and Alpine BT300) around my house, garage, car, and on the go. They all work wonderfully (some have better range than others, some better sound), but using any of them presents a couple common issues.
Some devices (like my car), constantly seek out the last paired device until they connect, while most of the other require a connection to be initiated from the phone. The phone doesn't care which is around or has the best signal, just which one successfully connects first.
I'd like an app that could have profiles setup which would let me control certain variables OR at a more basic function (see below):
Bluetooth Profile
Device Priority
Minimum Strength (to be used when more than one device has the same priority)
That would be my ultimate goal, but in the meantime I'd be happy with something as simple as a command line app that could be bound to a key or shortcut which would try to connect to a predefined list of BT MACs for a given profile and stop when the first one connects successfully. Variations on this might allow a connection attempt to a specific device instead of a list. This way I could have StartMenu or Today shortcuts.
The point here is largely to have to avoid nagivigating all the menus needed to initiate an A2DP connection, but I'm sure there are MANY other uses people would find.
If someone could point me in the right direction (I'm researching already of course) to the namespace(s) and or class(es) in .Net 2 or newer which would allow me to enumerate and/or initiate connections, this may be something I could bring to the community (assuming it doesn't already exist, and I have asked MANY times).
I've created a poll also to see what kind of interest is out there for this software and how much support I might receive.
I've been knocking an app up to suit my own personal A2DP needs... and a lot of yours by the look of things ;-) Things it does:
Kinetic scrolling finger friendly list of A2DP devices known to your phone (tap to select then tap again to attempt connection).
Toolbar buttons indicating active A2DP connection status (tap to disconnect active connection).
Bluetooth devices applet shortcut.
Switch bluetooth on (a good few of my devices need the phone to be discoverable so the app forces the phone to be discoverable at all times *blush*).
Switch bluetooth off.
Shortcut to program launcher list (automatically displays this list when you initiate a connection to a selected device... and there's items to display in the list of course).
Command line access (via secondary exe) allowing you to attempt connection (to a named , the last connected or first found device) and disconnect an active A2DP connection. I've only really tested the named device connection but the other 2 modes *should* work
QVGA / VGA and orientation aware.
I've been wanting to work towards getting it up on XDA... but time constraints (and a baby on the way ) have gotten in the way and it's unlikely I'll have the time to do it for a good while. I'd be happy to pass on the code to someone willing to take it further if that's any use. It's written (very quickly!) in VB.net BTW.
It uses a few bits and bobs from other people though:
A2DPToggle's "a2dp.exe" to handle initiating a connection.
Icons from lord only knows where I found them.
The kinetic list code found on here (http://forum.xda-developers.com/showthread.php?t=333124&highlight=klist). IIRC, I used the gingercat updated version and tweaked it to my own needs. There's many a kludge I've put in to the code to get things working quick-smart (D-Pad navigation mainly).
InTheHand 32feet.NET libraries (http://inthehand.com/content/32feet.aspx). These work with MS Bluetooth stack only.
So permission from the respective folks above would be needed before releasing it into the wild I guess.
Here's a screeny
Hey great tool! When I click a device will it auto connect or only open the BT Explorer and will it work with Broadcom BT Stack? Thanks
Oops, meant to say it's been developed for the MS bluetooth stack only. Sorry about that.
When you attempt to connect to a device it first checks the device is reachable and only then attempts to initiate an A2DP connection.
Northernmost said:
I've been knocking an app up to suit my own personal A2DP needs... and a lot of yours by the look of things ;-) Things it does:
Click to expand...
Click to collapse
Absolutely. I can get around in VB.Net and C# just fine. If you don't want to publish the code publicly, PM me your email address and I'll invite you to my Sharepoint site (easiest way I know to share files and manage communique), otherwise attach here.
It sounds like you've already covered 99% of what I was looking for, but I'd be more than happy to do what I can to more the idea forward, even taking suggestions from others in this thread.
About the BT stack, I'm running a Vogue with a ROM cooked in PPCKitchen, how do I determine which stack I'm running and can that be changed?
rainabba said:
About the BT stack, I'm running a Vogue with a ROM cooked in PPCKitchen, how do I determine which stack I'm running and can that be changed?
Click to expand...
Click to collapse
I've no idea what stack Vogues come with but the MS stack device list looks like the attachment below. If yours looks the same it's the MS one. I guess the Vogue forum should have any info on swapping stacks if it's possible.
Sounds like I found the correct people to answer my question about BT. Is there a way / how can I: enable my Mogul 6800 phone to transmit the sound that would normally go through the speaker to my BT headset in order to listen to streaming audio from the net using Kinoma Play which goes out and picks up all sorts of "radio programs" , i.e. not using a direct URL. I am also not able to listen to audio files from the Audio Recorder through anything except the speaker, even not through a head phone. Do I need to download a program or set up my phone differently. I currently have Titan WM6.1 Build 20755 GPS kitchen from PPC Geeks. Thanks so much for your help.
jminor4326 said:
Sounds like I found the correct people to answer my question about BT. Is there a way / how can I: enable my Mogul 6800 phone to transmit the sound that would normally go through the speaker to my BT headset in order to listen to streaming audio from the net using Kinoma Play which goes out and picks up all sorts of "radio programs" , i.e. not using a direct URL. I am also not able to listen to audio files from the Audio Recorder through anything except the speaker, even not through a head phone. Do I need to download a program or set up my phone differently. I currently have Titan WM6.1 Build 20755 GPS kitchen from PPC Geeks. Thanks so much for your help.
Click to expand...
Click to collapse
You need an A2DP capable device (high quality), connected, THEN start your audio program OR use a program called Audio Gateway with a basic Bluetooth headset (low quality audio).
thank you very much.
Northernmost, how about that source code? If you want to pass it along less privately than a post here, PM me and I'll provide a solution (source control, WSS, etc.)
Sent you a PM the other day. Let's go the private way for now.
Hello! I’m new here and I have a problem with my HTC Touch HD’s GPS.
Because of a GPS lag of my HTC Touch HD PDA-Phone (Windows Mobile 6.1 OS), I asked advice of a HTC Europe representative, in order to improve GPS receiver performance, who has recommended to me to change (Start - Settings - System - External GPS – Hardware) Baud rate field value from 4800 (default) to 9600. I was impatient to apply this official recommendation, I selected the new value, saved the change by clicking “OK”, but … surprise! - After reopening of External GPS – Hardware, I saw that the new value wasn’t registered and the device seems to be locked to the previous value (4800). Also Hardware port field has the same behavior and seems to be locked to the default value: (None). I tried to do these changes even a hard reset, with several and also with no any navigation software installed on my device, but it was useless – the values still remain the same. HTC official, and also my telephony provider told me that they don’t lock GPS receiver’s settings.
Please, can anybody tell me:
- which registry key I have to change to make this fields editable, or
- maybe there is another way (except to follow the tutorial described here: http://blog.mohdimran.com/htc-touch-pro-gps-problem-tweaking, which I’ve already did… useless of course) to improve GPS performance?
Technical specifications: - GPS Chipset: Qualcomm gpsOne A-GPS
- Network: Vodafone (Europe)
Thank you in advance
The "hardware" tab in GPS configuration from start -> settings is broken on many windows mobile 6.0/6.1 devices. The only way to change those settings is to go to:
HKLM\System\CurrentControlSet\GPS Intermediate Driver\Drivers
You'll find "CurrentDriver" value there, which points to one of the subkeys.
If you want to use the builtin GPS receiver, the driver settings in the key pointed by "CurrentDriver" should be as follows:
InterfaceType = "POLL"
CommPort = "GPS0:"
PollInterval = 1000 (DWORD value)
There is no baud rate setting for builtin GPS receiver, but you can try experimenting with various PollInternal values. I don't think that would help a lot because GPS receivers are reporting GPS location once per second and poll-ing the device more often would not give you better GPS precision. But I can be wrong here.
If you're using external/bluetooth GPS receiver, you can point "CurrentDriver" to a subkey with values like these:
InterfaceType = "COMM"
CommPort = "COM3" (or whatever port you choose)
Baud = 4800 (DWORD value)
Regards
Thanks a lot for your promptitude
No, you aren’t wrong, because I’ve already tried several changes, for my builtin GPS receiver, in HKLM\System\CurrentControlSet\GPS Intermediate Driver\Drivers\GPSOneDevice, which, at the beginning, looked like this
Default = (value not set)
CommPort = GPS0:
DriverName = GPS Device Driver
FriendlyName = QualComm GpsOne Card, version 0.0
InterfaceType = POLL
PollInterval = 1000 (this I’ve changed to 100)
Version = 2
and any change that I’ve done, didn’t improve GPS precision at all. As I said before, see this link: http://blog.mohdimran.com/htc-touch-pro-gps-problem-tweaking.
So, seems that things couldn’t be worse because, as I have supposed too, HTC and Vodafone have nothing to do with GPS Baud Rate field locking, but Windows Mobile HAS. Because it looks like it isn’t possible to change (which anyway will be useless, even if I could) Baud Rate field’s default value, please tell me
- maybe a new ROM (unofficial) after a HSPL or SSPL installation could improve GPS precision (I have already did the new official ROM upgrade from HTC, two months ago) and
- what is the best ROM in my case?
All the best
... or there is another way to fix this Windows Mobile 6.1 deficiency?
Best regards
… HTC representative suggested me that my device could be damaged or that this problem could appear from my GSM provider's CID (or SIM) locking. Yesterday I went to the store from where, four month ago, I bought my HTC Touch HD, willing to find out what could be the cause and if, on other brand-new, sealed up device (HTC Touch HD of course), GPS Baud rate’s value can be changed. The new device had the same behavior like mine!
So, on one hand, because it is hard to believe that all HTC devices from that store are damaged, the conclusion is that my device is working properly and, on the other hand, I looked up for an explanation that all Windows Mobile OS on HTC from that store have the same broken setting – I can’t still think at anything else but GSM provider SIM locking. Please tell me if could be this the cause of the Windows Mobile broken setting, because, in this case, I could resolve the problem by unlocking my HTC !?
Thank you
Hi, everybody
I’m back and I apologize if I’m bothering you with this problem again.
I asked a Microsoft representative about possibility to have a spoilt Hardware tab on several devices running WM 6.1 and I received this answer:
“Are you sure you have chosen the correct hardware port? That is the only thing I can think of that would affect that change unless your GPS does not support a higher setting.”
Does anybody know if builtin GPS receiver’s Baud rate of HTC Touch HD supports higher settings than 4800?
All the best
Please, could anybody try, on HTC Touch HD, to set a higher value than 4800 in Baud rate field and tell me if, after “External GPS – Hardware” reopening, the new value was registered?
Thanks a lot
geronimo98 said:
Please, could anybody try, on HTC Touch HD, to set a higher value than 4800 in Baud rate field and tell me if, after “External GPS – Hardware” reopening, the new value was registered?
Thanks a lot
Click to expand...
Click to collapse
It doesn't, it always reverts to 4800.
Thank you very much
Seems that builtin GPS receiver doesn't support higher settings indeed!
So HTC representative was giving me a wrong solution for GPS's lack of precision.
Best regards
I think so, although weirdly if I use the HTC GPS App it lets you pick much higher BAUD rates, but these still don't "stick" in other apps or Windows itself
http://rapidshare.com/files/84815853/Nadavi_HTC_GPS_TOOL.cab
Thanks again, alltruism
It still remains the same problem with "Hardware port" field, which always returns to "(None)", although I picked other values in a previous step (as I said above).
It is important to me because I got a licence for Sprite Terminator and this work only if "Hardware port" is set to "COM0" or other value, except "(None)" and "COM4", which appears in "GPS program port".
Do you have same problem in “Hardware port” field too (like in “Baud rate” field)?
All the best
geronimo98 said:
Thanks again, alltruism
It still remains the same problem with "Hardware port" field, which always returns to "(None)", although I picked other values in a previous step (as I said above).
It is important to me because I got a licence for Sprite Terminator and this work only if "Hardware port" is set to "COM0" or other value, except "(None)" and "COM4", which appears in "GPS program port".
Do you have same problem in “Hardware port” field too (like in “Baud rate” field)?
All the best
Click to expand...
Click to collapse
Yes, it always reverts to "none" immediately. I haven't tried unticking the "managed by windows" bit though
Hello
Thanks a lot
It doesn’t work
Several days ago I was wondering why HTC Europe representative recommended me to change some settings in "External GPS - Hardware" to make built-in Internal GPS to work faster??!
(Anyway, following this recommendation on Samsung Omnia, didn’t improve GPS precision at all!!)
Though, trying to do this, I noticed something else: these changes can't be made on HTC Blackstone (Touch HD), but on other PDA-Phones running WM 6.1 OS, as for instance Samsung Omnia i900, there are no problems doing these changes.
Thinking at this, it still remains the question: why some settings can be made on other devices running WM 6.1, but not on Blackstone?
Best regards
Hi
Please, other HTC phone owners, tell me if you have (or not) same problems with your Blackstone or other HTC model?
Thanks a lot
I have an HTC Touch Pro and I have exactly the same problem as you
cant change it in the kaisers either... its pretty well none in the kaiser section.
Thank you all
Few days ago I received this answer from HTC Europe, which is TOTALLY DIFFERENT than what they told me several weeks ago:
“The reason why you can not change GPS hardware port and baud rate values is because you use the built-in GPS, which has got its own hardware port and baud rate values set up as factory settings.”
Now I have official confirmation that Blackstone’s built-in GPS receiver CAN’T DO MORE than 4800 transfer speed.
Because my PDA Fujitsu-Siemens Pocket Loox N500, with a MUCH WORSE configuration than HTC Touch HD, is incredibly precise and provides a REAL TIME position, but has a SIRF Star III GPS, I can conclude that SIRF Star III GPS receivers are much better than those on Blackstone. Don’t you think?
All the best
Hi Geronimo,
I've also noticed this on my Blackstone when trying to configure the "GPS hardware port" & "Baud Rate" under "Settings>External GPS".
Yes I'd agree that the built in GPS is not as good as the SIRF Star III GPS. When I'm in my car I actually use my old external bluetooth GPS which certainly works better.
Great work in following up with HTC to confirm this information.
Best Regards,
David.
Hi guys,
I have a HTC HD and I'm having this same inssue that I can't resolve. I read all your answers and anything solves my problem.
I made already all configurations (well... I think yes ) and nothing results.
Basically neither NDrive neither TomTom can find GPG on my HD
If somebody can help me I'll apreciate.
Thanks
4800 baud is the NMEA standard, a consumer GPS unit will transfer around 80 characters every second, so 4800 baud is easily fast enough to cope. There's no need for anything faster, it won't improve the performance of the GPS in any way.
Hi,
An idea just hits my mind when I put my nexus s beside my key fob for my room, nexus has shown an unknown tag using NFC technology. The idea is to make nexus reads the key-fob id then use nexus as an alternative key-fob.
Hopefully someone can get this idea out and make it real.
Thank you.
I guess to start, someone will need to be able to tell the NFC to *transmit* instead of just receive.
Sorta like the FM radio chip that's supposedly on board. Someone said in another Nexus S thread that there's an FM radio chip in there somewhere (in the wifi chip maybe?) and that it was intended to be a transmitter.
cormyn said:
I guess to start, someone will need to be able to tell the NFC to *transmit* instead of just receive.
Sorta like the FM radio chip that's supposedly on board. Someone said in another Nexus S thread that there's an FM radio chip in there somewhere (in the wifi chip maybe?) and that it was intended to be a transmitter.
Click to expand...
Click to collapse
this is the chip in the Nexus S and it does indeed transmit and receive FM
http://www.broadcom.com/products/Wireless-LAN/802.11-Wireless-LAN-Solutions/BCM4329
It should be possible. The NFC chip on the NS can do write/card emulation/P2P modes, but they're not enabled in the Gingerbread API. There's library code to get close to doing this in previous revisions of the AOSP projects (see libnfc-nxp.git and Nfc.git projects), but the NFC library's hairy and poorly documented, so it'd be a bit of an effort (I've looked).
Google have said they'll be enabling the write and P2P modes later, so it's either more hackery now, or wait for Google to enable it.
mwak14 said:
Hi,
An idea just hits my mind when I put my nexus s beside my key fob for my room, nexus has shown an unknown tag using NFC technology. The idea is to make nexus reads the key-fob id then use nexus as an alternative key-fob.
Hopefully someone can get this idea out and make it real.
Thank you.
Click to expand...
Click to collapse
The only problem I can think of is the method in which key fobs work. I have a 135i with comfort access and I know for a fact they use a type of rolling code to prevent this kind of thing. You would have to be able to adjust the frequency each time and make sure that your car picked up that same frequency.
That probably doesn't make too much sense, and I'm having a hard time putting it into words so here, this explains rolling codes and how key fobs work:
http://electronics.howstuffworks.com/gadgets/automotive/unlock-car-door-remote1.htm
booyakasha said:
The only problem I can think of is the method in which key fobs work. I have a 135i with comfort access and I know for a fact they use a type of rolling code to prevent this kind of thing. You would have to be able to adjust the frequency each time and make sure that your car picked up that same frequency.
That probably doesn't make too much sense, and I'm having a hard time putting it into words so here, this explains rolling codes and how key fobs work:
...
Click to expand...
Click to collapse
If it's not NFC-compliant tech (which from what you describe, isn't), it won't work, that's a given.
Nfc can be used for secure access so like your coprorate buildings and is liminlted to about 10cm distance. So yes, a car manufacturer could implement it.
As for a radio fob, most of those are 868Mhz low power RF. Funny thing is, NXP, the semi company that makes the nfc chip also makes the 868Mhz RF chip in most car fobs.
Hi,
I am student from the Ruhr-university of Bochum, Germany, and I am working on my master thesis which is dealing with anti spoofing techniques for GPS. I already recognized, that I need to modify the Android GPS subsystem in order to be able to go on with my work as planned. So, I need more information about the GPS modules in the android devices (better: detailed information about one particular module). My aim is to get more GPS properties from the module than currently is given to the Android OS. In fact, I need to get information about the gps signals, like phase, signal strength, etc.
Can anybody help me with this? Where can I find information about any GPS module or is there any known project or hack which is able to get the signal properties?
best regards,
Tordred
I Think you are looking for this:
http://developer.android.com/guide/topics/location/strategies.html
http://developer.android.com/reference/android/location/LocationManager.html
http://developer.android.com/reference/android/location/GpsStatus.html
http://developer.android.com/reference/android/location/GpsSatellite.html
No, sorry. I am not looking for location related stuff. It is not the location I am interested in, it is the GPS signal itself. And this stuff is not supported by the original android implementation.
You can only get as much info as the GPS module is putting out.
The two protocols are NMEA-0183 and SiRF Binary protocol (if applicable).
Renate NST said:
You can only get as much info as the GPS module is putting out.
The two protocols are NMEA-0183 and SiRF Binary protocol (if applicable).
Click to expand...
Click to collapse
Thanks for your answer, I just took a deeper look on the SiRF protocol and it seems to be possible to get the data I need with this protocol. I saw that the Galaxy S2 has built in the SiRFStar IV chip. Does anybody know something about this chip? Is it a "uncut" chip in the Galaxy S2 and is it perhaps possible to "talk" to it using the protocol?
I don't do much with SiRF Binary; on a PC I use it to select the WAAS satellite.
Give it a try, just switch out of NMEA-0183 using the $PSRF100,0 message.
Renate NST said:
I don't do much with SiRF Binary; on a PC I use it to select the WAAS satellite.
Give it a try, just switch out of NMEA-0183 using the $PSRF100,0 message.
Click to expand...
Click to collapse
Now I have a Galaxy Nexus, which has also built in the sirfstarIV gps chip. I am trying to switch out of NMEA, but I am not very familiar with linux ans serial ports. I am trying to send the switch message via terminal to the gps chip, but it seems not be successful.
I already know, that the serial port is the ttyO0, as mentioned in the sirfgps.conf file. I tried to configure it with "setserial" and "stty" and I tried to send a message with "echo", but there is no response.
Can somebody explain to me how I use the serial port correctly?
First try to get the NMEA-0183 working.
The default spec baud is 4800.
You should be able to connect to the GPS chip and without issuing any commands receive NMEA sentences.
Hmm. For built-in chips you have to probably power it up somehow.
It seems the ttyO0 is not the serial port of the gps chip but the serial port of the kernel... I am getting an output using the microcom command, but I can not read it. I tried several baud rates, but it is always unreadable.
Sound like a cool project, but we cannot help you unless you specify exactly what device/model you are using. Its a Nexus I9250 or SGS2 I9100 ??? Is it branded by some other operator etc? Sometimes the best thing is to open the damn thing and see what's inside. (But the Nexus has been in some tear-downs/take-aparts, google it!)
Also have a look at:
"Accessing uart on Galaxy Nexus i9250"
Then you'll need the Service Manual with the schematics to figure out how the GPS is wired. On the I9100 its wired to the modem (BP/CP) and on the I9250 its wired to both AP and to the MUX... (You've got some reading to do...)
But you should be able to find the correct port from dmesg, logcat and the various *.rc scripts...
I tried to get a i9100 because of the sirf gps chip, but I got a i9250 with the ICS 4.04 Stock Rom, which has the same chip built in. I rooted the device using the NexusTool and installed busybox on it.
I have already read several threads to get an orientation how to get access to the serial ports and how to deal with the gps chip:
- [MOD/SETTINGS TWEAK] SiRF GPS on SGS2
- [A][SGS2][Serial] How to talk to the Modem with AT commands
- Accessing uart on Galaxy Nexus i9250
- The all-in-one Galaxy S2 Hack Pack
In order to get an output(or some kind of action in the gps chip) I wrote an app, which is trying to get a gps fix in an background service. So my phone is always trying to get a fix. When I now look into the dmesg or logcat output, there is no hint on gps. I read about those .rc scripts, but i can not find them on my device.
In the /vendor/sirfgps.conf I found the lines ...
Code:
UART_DRIVER = /dev/ttyO0
UART_BAUD_RATE = 2
...where 2 stands for 460800 Baud. I tried to connect to this port using the command
Code:
microcom -s 460800 /dev/ttyO0
with a terminal emulator app, but the output was not readable. I tried several other baud rates, but it is always unreadable.
What do you mean with "...the output was not readable.."??
Do you get anything? Can you post it.
If you get "something", then, you're either:
- using the wrong UART port
- the wrong baudrate, parity, stop bit settings etc.
- receiving data in some unknown format, possibly encrypted.
Please, post (on Pastie) your dmesg output (as it appears) immediately after bootup. And possibly a full debug logcat using the "Logcat Extereme" App, when turning on and off GPS.
Also you should not use apps for trying to read this data, as your app runs in VM which doesn't have full root FS access, regardless of SU. You first try getting data from a terminal session either from phone side (adb) or from PC (Realterm etc.) side.
Is this true?
Hello, i'm new here.
I'm wondering is it true that my Galaxy young gps module are :
1. Broadcom BC2075 (AGPS support chip)
2. Broadcom BC4751 (GPS receiver)
i'm using ES file exprorer on my rooted system and find glconfig2075.xml and glconfig4751.xml. in /etc/gps/ system folder. Nothing found in my cheap prerooted with no gps support tablet.
If this is true then there is some relief that it is kinda easy to find what my gps are in situ, rather than look out in the cloud via google.
It's still hazy to me, why is it that the same hardware but a software change from 10 minutes up to 5 seconds to receive satellite. Anywhere.
Android GPS Module
Renate NST said:
I don't do much with SiRF Binary; on a PC I use it to select the WAAS satellite.
Give it a try, just switch out of NMEA-0183 using the $PSRF100,0 message.
Click to expand...
Click to collapse
Hello
My Android phone those not have a GPS module on it and i need to install and GPS TEST
is there any APP that can help or do i need to get another phone am using a Techno W2