GPS Module

Glidlock

I'm sorry, don't know how to add image here.

Rafa

i have the cp210 controller, too. but it doesn´t work.
what i have to do to activate the CP210?
i´ve the pi3 with cp210 uart and a u blox neo 6m

Glidlock

Rafa,

you need load cp210x.ko file in the system by insmod command, then set the baud rate of yout ttyUSB0 (for me its 4800 baud), after than you can read NMEA data from GPS.

All this work, but only when l did it manually.

Mr. Kalkov, what we need to do that our GPS start working after starting Android?

I tried to use init.d directory, preinstall.sh, install-recovery.sh but nothing works in autostart. Don't understand why.

All necessary scripts and libraries spelled out and installed.

Glidlock

Dear developers of Emteria OS, how to enable script autostart ?

albdom

Gridlock,

Do you get Android system simulate gps communication selecting file ttyUSB? Could you say how, I can see NMEA messages in ttySO but I not know this point.

Glidlock

albdom,

yes. I used terminal emulater for android.

What I did:

First you need download gps.default.so https://github.com/dipcore/gps-glonass-android-driver (can use another one)

Copy gps.default.so to /system/lib/hw
set the permission: chmod 644 /system/lib/hw/gps.default.so

Then load gps driver to the system: insmod /boot/modules/your_driver.ko, for me it was cp210x.ko, so I wrote: insmod /boot/modules/cp210x.ko

After that type: dmesg | grep usb

u must see something similar to: "cp210x converter now attached to ttyUSB0"

Then set a baud speed for your usb gps: stty -F /dev/ttyUSB0 speed XXXXX (for me it was 4800), so i wrote: stty -F /dev/ttyUSB0 speed 4800

And final: cat /dev/ttyUSB0

NMEA data must run.

albdom

Gridlock,

I can see NMEA message in /dev/ttyS0 because my gps module is connected on gpio via serial. My problem is that I can't select this file in app gpsUsbDroid and I know not how said to Android that select this file yet.

IKS

@Glidlock, you can write your own sh scripts and put them into /data/init.d
They will be executed during boot. Take a look at existing scripts.

EDIT: You will find an initialization header with execution trigger in our own scripts. You can replace "boot" by "ready" if you want your script to be executed as soon as the platform finised booting. Otherwise your settings may be overwritten by the boot process.

IKS

@Glidlock, we will also try to compile drivers for USB cp210x serial devices into our kernel by default.

albdom

@IKS what about gps.rpi3.so?

IKS

What about it? It provides a default HAL for ODROID's USB GPS mouse: https://help.emteria.com/kb/devices-rpi-3#gps

Electron

Hi all! I resolved trouble with connection any gps mice to RPI with emteria os.
I used old GPS receiver with TTL output, connected to RPI's uart (GPIO pin 10 - RX). Then, i removed from file "cmdline.txt" string about console, like "console=serial0,115200". My receiver works at speed 9600, so, now i can see NMEA flow in /dev/ttyS0.
Next, i make script file named "99gps", in /data/init.d/. In this script i put strings:

chmod 777 /dev/ttyS0
ln -f /dev/ttyS0 /dev/ttyACM0
chmod 777 /dev/ttyACM0

As owner for this script i set "system", and all of rights (777)

After reboot, in terminal by "cat" command, i see NMEA flow at /dev/ttyACM0 too

Fine!
Test program "GPS Test" shows me sattelites and my location.

Profit!

next, i want to try Ublox 8 receiver (GLONASS + GPS) with TTL output from one famous China shop.

p.s. sorry for my english :-)

albdom

@Electron said:
Hi all! I resolved trouble with connection any gps mice to RPI with emteria os.
I used old GPS receiver with TTL output, connected to RPI's uart (GPIO pin 10 - RX). Then, i removed from file "cmdline.txt" string about console, like "console=serial0,115200". My receiver works at speed 9600, so, now i can see NMEA flow in /dev/ttyS0.
Next, i make script file named "99gps", in /data/init.d/. In this script i put strings:

chmod 777 /dev/ttyS0
ln -f /dev/ttyS0 /dev/ttyACM0
chmod 777 /dev/ttyACM0

As owner for this script i set "system", and all of rights (777)

After reboot, in terminal by "cat" command, i see NMEA flow at /dev/ttyACM0 too

Fine!
Test program "GPS Test" shows me sattelites and my location.

Profit!

next, i want to try Ublox 8 receiver (GLONASS + GPS) with TTL output from one famous China shop.

p.s. sorry for my english :-)

Great job!! I needed it finally!!

albdom

Finally the solution for GPS via GPIO (UART) need these steps:

1)
/\/\/\/\/\/\/\/\
ENABLE SERIAL/\
/\/\/\/\/\/\/\/\

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

2)
/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
CREATE SCRIPT (in folder /data/init.d). For example scriptgps/\
/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
https://drive.google.com/open?id=1DyLQTsck5mzdr9IUpg5f4vzyTolZ-fuy

3)
/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
GIVE PERMITS, CHANGE USER AND GROUP TO SCRIPT/\
/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\
Commands by SSH (easy form: install app called sshdroid):

----> chmod 777 /data/init.d/scriptgps
----> chown system /data/init.d/scriptgps
----> chgrp shell /data/init.d/scriptgps

4)
/\/\/\/\/\
REBOOT/\
/\/\/\/\/\

Thanks to the user @Electron for this solution.

Electron

So, in latest release 0.5.8, in file /system/build.prop i found a string "ro.kernel.android.gps=ttyACM0". You met with this string, if you tried to use some GPS/GLONASS libraries from github.

And, i changed ttyACM0 to ttyS0. Plus, i putted a script in to init.d, which gives permissions 755 to /dev/ttyS0.

It works too!

IKS

Nice, thanks for sharing!

Andybv

Hi guys,

I have a USB GPS CP2102 like this one:
https://www.robotshop.com/eu/fr/module-gps-raspberry-pi.html?gclid=CjwKCAjw7tfVBRB0EiwAiSYGMxVfMkBp4N468mXzyrsW0cbCNL52coioLykBfaqSaavfmazspNUxwxoCNskQAvD_BwE

I saw Glidlock managed to loag the CP201x driver into the system, but I have no idea how to do it. Can you please help me?
I would like to use this gps in my car..I tested emteria and everything is working fine except this GPS. Once I will make it work, I'll buy the full licence.

Thanks

Electron

@Andybv said:
Hi guys,

I have a USB GPS CP2102 like this one:
https://www.robotshop.com/eu/fr/module-gps-raspberry-pi.html?gclid=CjwKCAjw7tfVBRB0EiwAiSYGMxVfMkBp4N468mXzyrsW0cbCNL52coioLykBfaqSaavfmazspNUxwxoCNskQAvD_BwE

I saw Glidlock managed to loag the CP201x driver into the system, but I have no idea how to do it. Can you please help me?
I would like to use this gps in my car..I tested emteria and everything is working fine except this GPS. Once I will make it work, I'll buy the full licence.

Thanks

Please look here
http://pccar.ru/showthread.php?t=18871 (Russian)
there were some drivers, and for cp2102 too...

Artur951

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?

Electron

@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...

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