GPS Module

Artur951

@Electron said:

@Artur951 said:
Hi, everybody. I use Rasp pi 3 for CarPC. There is a problem with the Gnss receiver gn803g gps receiver. Formally, applications see the location, but it constantly disappears every second. What can be done in this situation?

With U-Blox u-center, i tuned my U-blox neo M8N to partially resolve this problem.
I switched off output of GLONASS data, and changed data rate to 10 hz.
Situation became better...

How did you set up U-blox? I didn't see any settings there. The car speed on the gps periodically disappears and appears.

Electron

@Artur951 said:

@Electron said:

@Artur951 said:
Hi, everybody. I use Rasp pi 3 for CarPC. There is a problem with the Gnss receiver gn803g gps receiver. Formally, applications see the location, but it constantly disappears every second. What can be done in this situation?

With U-Blox u-center, i tuned my U-blox neo M8N to partially resolve this problem.
I switched off output of GLONASS data, and changed data rate to 10 hz.
Situation became better...

How did you set up U-blox? I didn't see any settings there. The car speed on the gps periodically disappears and appears.

In menu View->configuration view (CTRL+F9)-> RATE (Rates)
Set measurement period to 100 ms
Also,in NMEA (NMEA Protocol) menu, you can to switch off output of GLONASS data.

gsfx

Hello,

I am having GPS issues, too. For a car pc project I bought these two devices:

https://www.amazon.de/gp/product/B00EDI5M3A/ref=oh_aui_detailpage_o07_s00?ie=UTF8&psc=1

https://www.amazon.de/gp/product/B008200LHW/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

The second one I bought as I read, that it should be working with Android. I followed this manual, saying I should use the BU-353-S4:

https://www.tapatalk.com/groups/engineeringdiy/raspberry-pi-3-android-lineageos-kodi-17-gps-navig-t875.html

I did all steps (not through ADB, but I copied and edited the files manually via SD card reader) as desribed in the linked topic. I does not work. Mock locations are activated - in German its "Choose app for mock locations". Someone here from Germany who can confirm that? There is no other entry for mock locations or GPS...

Then I read here and tried UsbGps4Droid - it does not work. I can choose my GPS device but it cannot connect.

Here you are GPS - does not work.

Usinge Linux (Rasbian Jessie) - it works.

So can someone please help me?

Thank you in advance!

Best regards

gsfx

Yesterday my Odroid USB GPS device arrived. A few days before I installed version 0.5.14. The Odroid device did not work. But with GPS UPS IT started working. So I tested the BU-353-S4 and it worked as well with USB GPS. Only the Venus SkyTraq did not work with GPS USB... It seems that the Version 0.5.14 fixed the problems.

Best regards

gsfx

dorfi

Hey,
I am using this usb gps mouse
https://goo.gl/QxYBD7
Gps mouse works when using Raspian

I did the mentioned steps before and "cat /dev/ttyACM0" shows NMEA data, but Apps like "TestGPS" do not get GPS data

in build.prop I've changed/added following lines:
ro.kernel.android.gps=/dev/ttyACM0
ro.kernel.android.gps.speed=4800
ro.kernel.android.gps.max_rate=1

When I copy cp210x.ko to /boot/modules and execute
insmod /boot/modules/cp210x.ko
I get get "insmod: failed to load /boot/modules/cp210x.ko: Exec format error"

dmesg shows:
usb 1-1.3: new full-speed USB device number 8 using dwc_otg
usb 1-1.3: New USB device found, idVendor=10c4, idProduct=ea60
usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-1.3: Product CP2104 USB to UART Bridge Controller
usb 1-1.3: Manufactorer Silicon Labs
usb 1-1.3: SerialNumber: 011807EB
usb 1-1.3: cp210x 1-1.3:1.0: cp210x converter detected
usb 1-1.3: usb 1-1.3: cp210x converter now attached to ttyUSB0

Logs from logcat
https://drive.google.com/open?id=1P1vVZE9Evs1BcbvGzRYvmAahF4D8mCH_

IKS

If your system is already able to detect cp210x devices, you don't need to load additional modules (they are probably already included).

I don't see any GPS-related errors in the logcat. Are you sure your app may access /dev/ttyACM0? Maybe you need to set correct permissions.

dorfi

I had to set root as owner for the script and remove the /dev/ from ro.kernel.android.gps=/dev/ttyACM0
Works fine now 🙂

IKS

Awesome, thanks for sharing!

gsfx

@dorfi said:
I had to set root as owner for the script and remove the /dev/ from ro.kernel.android.gps=/dev/ttyACM0
Works fine now 🙂

Hello Dorfi,

Interesting news. Just to be sure, your build.prop shows the following lines:

ro.kernel.android.gps=ttyACM0
ro.kernel.android.gps.speed=4800
ro.kernel.android.gps.max_rate=1

Where did you find the file cp210x.ko? Is this the file where you set the root permission? Did you connect the GPS directly to the USB slot or via adapter to the GPIO connectors?

Thank you!

Best regards

gsfx

dorfi

You do not need cp210x.ko, also I use ttyUSB0 instead of ttyACM0, so build.prop:
ro.kernel.android.gps=ttyUSB0
ro.kernel.android.gps.speed=4800
ro.kernel.android.gps.max_rate=1

unplug and plug your GPS mouse back in then dmesg
you should see:
....
usb 1-1.3: cp210x 1-1.3:1.0: cp210x converter detected
usb 1-1.3: usb 1-1.3: cp210x converter now attached to ttyUSB0

Enable Serial
Edit /boot/config.txt ----> add the line: enable_uart=1
Edit /boot/cmdline.txt ----> remove the string: console=serial0,115200

As on https://github.com/dipcore/gps-glonass-android-driver described,
Downlaod gps.default.so
Copy gps.default.so to /system/lib/hw
chmod 777 /system/lib/hw

Then I have added the script from the github link with the initialization header in /data/init.d/
in the script change baudrate from 9600 to 4800

Set permissions for the script:
chmod 777 /data/init.d/script
chown root /data/init.d/script
chgrp root /data/init.d/script

Reboot

gsfx

Thank you, dorfi! I tried it, but it refuses to work. But I can live with using two GPS devices, one for Android and one for Linux.

dorfi

Do you get any errors?
What happens if you manually execute the script

Olexyjunior

Hello my friends !

Do this USB GPS can work with android ?

https://www.amazon.de/USG-SiRFIV-USB-GPS-Receiver-Schwarz/dp/B008200LHW/ref=mp_s_a_1_5?__mk_de_DE=ÅMÅZÕÑ&qid=1529589638&sr=8-5&pi=AC_SX236_SY340_FMwebp_QL65&keywords=Usb+gps&dpPl=1&dpID=41b2fZ9RV1L&ref=plSrch

I need GPS to use with google maps, waze...

dorfi

@Olexyjunior yes it will work but it's not gonna be plug&play

LtBlight

Hi guys, I am a newbie about Emteria, and I want to install a GPS on it for my car. I wanted to know if possible :
1° which GPS module and antenna are compatible with Emteria
2° Is it easy to install? There is a procedure somewhere to do this? It would be perfect if there is a tutorial.

Many thanks for your help 🙂

LtBlight

I found this so I guess it's enough : https://wiki.odroid.com/accessory/connectivity/usb_gps

albdom

the main issue is that waze and google maps dont get run correctly

IKS

@albdom, could you please describe what is the main problem with waze?

albdom

@IKS when you are using waze without entering a route it usually works well, but when you enter a route the application is frozen or the route starts and soon after the screen remains black.

IKS

Hm, interesting... I hope it's not a memory issue.

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