Hi people,
Everyone is so excited with GPS navi solution, I was wondering if there is currently a software that allows basic navi using the Cell ID Broadcaseted from our current GSM network. I know that it may not be as accurate as a GPS navi system but it should be more that enough to tell the navi software to load the correct map and allow one to see what is around your area.
Well there are other advantages over GPS:
- Able to use the navi system undergound where GPS signal is not reachable. Eg, basement carpar, underground highways, etc. You will be able to use it whenever there is GSM coverage!
- No expensive GPS hardware required. The idealised situation is that the PDA is able to pair a bluetooth enabled handphone and the phone will feed the navi software with the current cell ID. If one have a XDA, that would be even better! You can then use your blue connection for your BT headset!
I have come across this software called Agis Navfone. Too bad it runs on Symbian Phones only... Does anyone out there have any ideal? If not, why not we can start some development in this direction? I'm a hobbist programmer, maybe someone can point to some info that shows me how to extract CellID in PocketPC. There's another what is to programme a virtual GPS device which will actually convert the CellID of the current network at translate it to something which most navi software will understand. THanks.
http://www.navizon.com/
Hello
the mainboard of the UNI has a slot free where a GPS receiver could be placed. Has anybody the information which chip could be pluged in there to have the UNI build in GPS enabled?
Regards Highc
Quite impossible
hi highc,
the missing chip is a RFR6250. This builds up the GPS backend for MSM6250 chipset.
But there will be no chance to use it, even with the chip soldered.
What is missing, is an ugly hacked radio rom to access the hardware in a proper way.
So if you're a genuis in hacking binaries, you're welcome
Cheers,
scholbert
Hi all,
I will buy a second hand used Htc Touch HD but i want to be sure that all the hardware of the phone works. So is there a test mode to test all hardware (such as GSM, GPS, Speakers, Mic, memory card, buttons, nand-flash and etc.) ? I used e-ten before and it had a test mode to be sure that all the hardware is working
redoano said:
Hi all,
I will buy a second hand used Htc Touch HD but i want to be sure that all the hardware of the phone works. So is there a test mode to test all hardware (such as GSM, GPS, Speakers, Mic, memory card, buttons, nand-flash and etc.) ? I used e-ten before and it had a test mode to be sure that all the hardware is working
Click to expand...
Click to collapse
There's no "test mode" that I'm aware of, but I wouldn't be surprised if someone had written something to do what you're looking for...
I called customer service to learn if there is a test mode. They informed me older HTC models had a test mode (*#*#3424#*#*). Newer models does't have a test mode
Then you'll just have to play around with it for half an hour
I have it now
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
Hello,
I Have a problem about my multimedia radio in my car,
According to the motherboard scheme,
I replaced two corrupted components:
1) Q26 - to enable to "Acc +3V3" to work
2) D6 - to enable to POWER_+B to to turn on the chip
Currently I'm blocking on understanding why the MCU doesn't turn up to "1" of "POWER_ON_CTL" pin,
In Addition I did some test check and tried to do it manually by connect to ground of emmiter of Q4,
This test enabled the "POWER 12V" and more
Anyone can help please ?
Thanks,