I am using the BeagleBone Green Wireless with the Grove Connector at UART2
More info. about the board can be found here:
https://wiki.seeedstudio.com/BeagleBone_Green_Wireless/
If you are not going to create the data logger like at the bottom section of this tutorial, please
use this bit of source after handling the restarting of the gpsd.service file!
#! /usr/bin/python3
"""
example Python gpsd client
run this way: python3 example1.py.txt
"""
import gps # the gpsd interface module
session = gps.gps(mode=gps.WATCH_ENABLE)
try:
while 0 == session.read():
if not (gps.MODE_SET & session.valid):
# not useful, probably not a TPV message
continue
print('Mode: %s(%d) Time: ' %
(("Invalid", "NO_FIX", "2D", "3D")[session.fix.mode],
session.fix.mode), end="")
# print time, if we have it
if gps.TIME_SET & session.valid:
print(session.fix.time, end="")
else:
print('n/a', end="")
if ((gps.isfinite(session.fix.latitude) and
gps.isfinite(session.fix.longitude))):
print(" Lat %.6f Lon %.6f" %
(session.fix.latitude, session.fix.longitude))
else:
print(" Lat n/a Lon n/a")
except KeyboardInterrupt:
# got a ^C. Say bye, bye
print('')
# Got ^C, or fell out of the loop. Cleanup, and leave.
session.close()
exit(0)
That source can be found at https://gpsd.gitlab.io/gpsd/gpsd-client-example-code.html
Yes sir!
...
Use python3 or chmod 0755 YourPython.py file and restart the gpsd.service file like so: sudo systemctl restart gpsd.service
This way, the client is rebooted and can now be used w/ a simple ./YourPython.py.
...
The kml wrapper in the GPS_data directory can be used as is in GoogleEarth for displaying your location and your path taken.
Also, that other file, the .txt file in the GPS_data directory, will fill with your location or past locations when you run the GPS.py file on your BeagleBone Green Wireless (WIP w/ gpsd)...
...
In theory, you can set up a .service file to run on boot so that the GPS.py file runs and follows you constantly.
I have a Grove Connector GPS device on the UART2 channel on the BBGW by BeagleBoard.org
and Seeed-Studio. Once upon a time, the two of those entities came together to produce this
BBBW but w/ the Green heading for some reason. Although different, it works and it is a nice
board.
The Grove GPS and BBGW are located in the files of photos. Enjoy...
...
Seth
P.S. That is all for now. Oh!
a file for /etc/systemd/system/GPS.service is found below for starting your service...
[Unit]
Description=GPS .bash Script to Handle Movement
[Service]
ExecStartPre=/home/debian/config.sh
ExecStart=/home/debian/GPS.sh
[Install]
WantedBy=multi-user.target
and then... GPS.sh
#!/bin/bash
sudo gpsd /dev/ttyS2 -F /var/run/gpsd.sock
sleep 60
sudo gpspipe -r -d -l -o /home/debian/data/data.400.nmea
and then... config.sh
#!/bin/bash
config-pin p9.21 uart
config-pin p9.22 uart
sudo systemctl restart gpsd.service
Then...change /etc/default/gpsd
w/ the grove GPS for the BBGW, use /dev/ttyS2.
START_DAEMON="true"
DEVICES="/dev/ttyS2"
There will be more options, esp. when looking at gpsd, to pick from currently.
Enjoy!
Oh and I learned those commands and about GPSBabel from this online community:
https://www.instructables.com/Raspberry-Pi-3-GPS-Data-Logger/
Logging!
If you need to go into specifics, go ahead or stick around for updates to this journey!