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freshollie / UsbGps4Droid

USB GPS Provider for android :artificial_satellite:. A maintained fork of hvb/USBGps4Droid
GNU General Public License v3.0
82 stars 34 forks source link

Need help in connecting USB GPS to Android based raspberry pi 3 Model b+ #13

Closed RojitJohncy closed 5 years ago

RojitJohncy commented 5 years ago

Hi,

Really need you help in connecting the external USB GPS to my Raspberry pi 3 model B+, which has android running in it. Tried several apps from the internet, but still no luck. Do you have the .apk file by any chance? as i'm very new to Android, i'm not sure about the steps of compiling the source code and generate the .apk file. Thanks in advance.

GPS Model: HW-658 GSM/GPRS Module USB GPS Module For Raspberry Pi.

freshollie commented 5 years ago

Hi,

I see you are very new to GitHub. You will find that most developers put instructions in the README.md.

In the case of this project, all releases (APKs) can be downloaded from the releases section.

RojitJohncy commented 5 years ago

Thanks for your quick help :)

I have one more question > does the latest version support HW-658 GSM/GPRS Module USB GPS Module For Raspberry Pi? Bought the device from below link. the device works fine with Rasbian stretch. But not sure how to make the gps work with Android running on RPI 3 model B+. https://www.aliexpress.com/item/HW-658-GSM-GPRS-Mould-USB-GPS-Module-For-Raspberry-Pi-A-B-A-B-Zero/32913026283.html

Thanks in advance!!

freshollie commented 5 years ago

I couldn't possibly know. From reading the specsheet, it looks like the device uses NMEA for communication, which is what this app is designed to read. NmeaParser

RojitJohncy commented 5 years ago

For some reason, the USB gps which I have mentioned above is not working. Will you be able to help me?

freshollie commented 5 years ago

Yes, what appears to be the issue? Have you got any screenshots?

freshollie commented 5 years ago

https://blog.github.com/2012-12-07-issue-attachments/

RojitJohncy commented 5 years ago

img_20181124_200212 img_20181124_200206

Attaching screenshots, i just see NA for all and when i try to use maps (tried WAZE) i get error no GPS found. i doubt if the external gps is not detected by the device. i dont see the led on gps unit blinking. Is there any config changes required so that device understands an external GPS is connected? Apologies for the basic questions asked, cause i have very basic knowledge in Android development and Raspberry pi.

Thanks in advance !! :)

freshollie commented 5 years ago

The data in the log box shows that the GPS unit is sending data to the app correctly, however the data shows no GPS fix. Your second screenshot shows that you have the service switched off.

Ensure that your GPS unit is in a position in which it can receive a GPS signal. You will see N/A in the values until a GPS fix is acquired.

RojitJohncy commented 5 years ago

I tried enabling the service for over 1 hour, but still don't see the GPS fix. I just see values as "NA". Is there anything we can to fix gps?

freshollie commented 5 years ago

Like I said, you must ensure that the GPS device is in an area where it can receive a signal. Have you tried it outside?

RojitJohncy commented 5 years ago

Yes, have tried it in an open area, the same gps works with raspbian os running in it. When I switch back to Android I get the problem. ☹️

freshollie commented 5 years ago

The screenshots which you have sent me do not show a GPS fix. Try to achieve a fix on raspbain and and then show me the same screenshot on android.

This app only decodes the messages it receives from the GPS. You can manually decode the same messages using this spec: https://www.gpsinformation.org/dale/nmea.htm where you will see for yourself that the GPS is sending a "No fix"

RojitJohncy commented 5 years ago

Will send you the screenshots from raspbian os running in it. Is there a way we can confirm if the external GPS is detected on the device?

freshollie commented 5 years ago

I don't want to see it running on Raspbian. I am trying to help show you how you might solve this problem. Make sure you get a fix in Raspbian, and then switch to android and see what the log output is from the app.

RojitJohncy commented 5 years ago

Still no luck. :( Should we add some drivers, so that the device can detect the external GPS?