how to build simple interface for Gps project using neo-6m gps module

Question

Hello, you may have heard this like thousand times. So i'm new to raspberry pi. And i just recently bought a raspberry pi 3 for my final year project. I bought this module also which is neo-6m GPS module because i my project relates to GPS. Apparently now, i'm clueless to how can i build an interface for my project. I know some programming language. If it is not such a burden, can anyone suggest me some tips and guide to how to build a simple interface for this project. Thank you :)

( i refered to these website for my project : https://www.instructables.com/id/Raspberry-Pi-the-Neo-6M-GPS/ https://pisavvy.com/neo-6m )

Answer 1

GPSD

If you don't want to parse the NMEA sentences yourself, you can use GPSD, which does this work for you. Assuming you followed your linked tutorials you might have already installed gpsd via

sudo apt install gpsd

In order to check if it is running, check the status of the respective service by calling

systemctl status gpsd.service

GPSD-Clients

You did not really state, what kind of interface you are looking for. In case you simply want to see the currently available positioning information, you can use the clients provided for use with gpsd. You can install them with

sudo apt install gpsd-clients

Here you can use e.g. cgps for terminal based output and xgps for a nice GUI.

Programmatic access

If you want programmatic access to the data aquired from the GPS module, you need to install libgps-dev and/or python-gps

sudo apt install libgps-dev python-gps

Then have the necessary libraries and interfaces and a variety of programming languages. Specific examples for c, c++ and python can be found in this overview or more in detail in this SO question.

Answer 2

The Instuctable you refer to has everything you need -- are you asking how to hook it up, or are you not wanting to use Python? I recently added an Adafruit GPS module to an existing RPi project that runs Node. However, you can follow the instructions in that instructable up to the point where he mentions testing it using 'off the shelf' software drivers. You do not need those because the GPS is now exposed as a Linux tty (teletype terminal) device. If your setup is correct, the following will spit out raw NEMA sentences from the device:

Note that I am not using the ttyAMA0 -- I have RPi3B+ -- I use ttyS0.

sudo cat /dev/ttyS0

Use Ctl-C to terminate output.

In my implementation, I use a Node module called 'raspi' to access the serial port and I parse the sentences myself -- they are not difficult to parse, but -- there are many already written, as well.

So, once you have made the wiring and modified your RPi by those instructions, you will want to investigate serial communications. I can help you with that, as they are not well understood now -- most people 'poll' them and that wastes your processor's time. My solution lets the data drive the collection and so -- it does not hang my processor like polling does. (Always let the data drive the application when possible.)

EDIT : My first draft of the tutorial is up now. It is rough, however -- you can email me with any further questions. I will add an address to it after posting this update. You should be able to get your device hooked up by using the first section of the tutorial.

http://stations.jinzai-studio.net/rpi3bgpstutorial.html