accessory:connectivity:usb_gps [ODROID Wiki]

Operation confirmed with testing in our ODROID XU4 on
- ubuntu-18.04-4.14-mate-odroid-xu4-20180501.img (Kernel Version 4.14.37-135).
- ubuntu-16.04-mate-odroid-xu3-20170731.img (Kernel Version 3.10.105-141).

You should have been done apt update && apt full-upgrade.
You have to install gpsd, gpsd-clients packages to proceed.

Put an actual GPS device node as the DEVICES option.
Although you don't enter any value for DEVICES option, you can use GPS utilities by putting actual GPS device node as the executable's parameter when you execute them.
- Example)
  target
  odroid@odroid:~$ gpsmon /dev/ttyACM0

Edit /etc/default/gpsd file as the below.

odroid@odroid:~$ sudo vi /etc/default/gpsd

# Default settings for the gpsd init script and the hotplug wrapper.
 
# Start the gpsd daemon automatically at boot time
START_DAEMON="true"
# Use USB hotplugging to add new USB devices automatically to the daemon
USBAUTO="true"
# Devices gpsd should collect to at boot time.
# They need to be read/writeable, either by user gpsd or the group dialout.
DEVICES="/dev/ttyACM0"
# Other options you want to pass to gpsd
GPSD_OPTIONS="

Restart GPS daemon to apply edited GPS daemon configuration.

target

/* GPS daemon stop/disable */
odroid@odroid:~$ sudo systemctl stop gpsd.socket
odroid@odroid:~$ sudo systemctl disable gpsd.socket
/* GPS daemon enable/start */
odroid@odroid:~$ sudo systemctl enable gpsd.socket
odroid@odroid:~$ sudo systemctl start gpsd.socket

If timeout caused due to the disconnection of GPS daemon, kill GPS daemon processes and re-enable GPS daemon, then try again.

Example)

target

odroid@odroid:~$ sudo killall gpsd
/* GPS daemon stop/disable */
odroid@odroid:~$ sudo systemctl stop gpsd.socket
odroid@odroid:~$ sudo systemctl disable gpsd.socket
/* GPS daemon enable/start */
odroid@odroid:~$ sudo systemctl enable gpsd.socket
odroid@odroid:~$ sudo systemctl start gpsd.socket

Method 1: Console Graphical

You can use
target
```
odroid@odroid:~$ cgps -s
```
It will show a nice interface with all of the related GPS data.

Or You can use
target
```
odroid@odroid:~$ gpsmon
```

Method 2: Console Text (Python)

Run:

target

odroid@odroid:~$ sudo apt-get install python-gps

testgps.py

import gps
 
# Listen on port 2947 (gpsd) of localhost
session = gps.gps("localhost", "2947")
session.stream(gps.WATCH_ENABLE | gps.WATCH_NEWSTYLE)
 
while True:
    try:
    	report = session.next()
		# Wait for a 'TPV' report and display the current time
		# To see all report data, uncomment the line below
		# print report
        if report['class'] == 'TPV':
                print report.time
    except KeyError:
		pass
    except KeyboardInterrupt:
		quit()
    except StopIteration:
		session = None
		print "GPSD has terminated"

Method 3: X11 FoxtrotGPS

Install foxtrotgps (X11 for a graphical view)

target

odroid@odroid:~$ sudo apt-get install foxtrotgps

Just open a terminal and run:
target
```
odroid@odroid:~$ foxtrotgps
```

Or click Menu → Accessories → FoxtrotGPS

Usage of USB GPS On Linux

Configure gpsd

Using the GPS

Method 1: Console Graphical

Method 2: Console Text (Python)

Method 3: X11 FoxtrotGPS

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