Python 2.7-3.5 clients for gpsd
Project description
Installation
[sudo [-H]] pip[2|3] install gps3
For example, sudo -H pip3 install gps3 for your default P3 installation. sudo pip2 install gps3 for Python 2.7.
gps3.py will install at /usr/local/lib/python[3.5]/dist-packages/gps3/gps3.py
gps3.py is a Python 2.7-3.5 GPSD interface (http://www.catb.org/gpsd) and defaults to host=’127.0.0.1’, port=2947, gpsd_protocol=’json’ in two classes.
GPSDSocket creates a GPSD socket connection & request/retrieve GPSD output.
Fix unpacks the streamed gpsd data into python dictionaries.
These dictionaries are literated from the JSON data packet sent from the GPSD.
from gps3 import gps3
gps_socket = gps3.GPSDSocket()
gps_fix = gps3.Fix()
gps_socket.connect()
gps_socket.watch()
for new_data in gps_socket:
if new_data:
gps_fix.refresh(new_data)
print('Altitude = ',gps_fix.TPV['alt'])
print('Latitude = ',gps_fix.TPV['lat'])
Consult Lines 147-ff for Attribute/Key possibilities. or http://www.catb.org/gpsd/gpsd_json.html
agps3.py is installed at /usr/local/lib/python[3.5]/dist-packages/gps3/agps3.py
It is functionally similar to gps.py, but literates object attributes rather than Python dictionaries.
agps3.py is also a Python 2.7-3.5 GPSD interface (http://www.catb.org/gpsd) and defaults to host=’127.0.0.1’, port=2947, gpsd_protocol=’json’ in two classes.
GPSDSocket creates a GPSD socket connection & request/retrieve GPSD output.
Dot unpacks the streamed gpsd data into object attribute values.
from gps3 import agps3
gps_socket = agps3.GPSDSocket()
dot = agps3.Dot()
gps_socket.connect()
gps_socket.watch()
for new_data in gps_socket:
if new_data:
dot.unpack(new_data)
print('Altitude = ', dot.alt)
print('Latitude = ', dot.lat)
Consult Lines 140-ff for Attribute-value possibilities.
For a human experience, both versions have trivial showcase scripts, located at
/usr/local/share/gps3/examples/
human.py showcases gps3.py, ahuman.py showcases agps3.py
python[X] /usr/local/share/gps3/examples/[a]human.py [-host] [-port] or --help for list of commandline options.
Toggle Lat/Lon form with ‘0’, ‘1’, ‘2’, ‘3’ for RAW, DDD, DMM, DMS
Toggle units with ‘0’, ‘m’, ‘i’, ‘n’, for ‘raw’, Metric, Imperial, Nautical
Toggle between JSON and NMEA outputs with ‘j’ and ‘a’ respectively.
Quit with ‘q’ or ‘^c’
Likewise, both versions have trivial applications [a] gegps3.py that creates a ‘live’ kml file(s) for Google Earth.
python[X] /usr/local/share/gps3/examples/[a]gegps3.py (defaults)
Scant documentation is in the respective file.
Un-installation
[sudo -H] pip[2|3] uninstall gps3
For example, sudo -H pip3 uninstall gps3 for P3 installation. Likewise, for Python 2.7 sudo pip2 uninstall gps3
Problems with installation
Un-install using the method above and y to delete the old files, then
sudo -H pip[2|3] install --ignore-installed gps3
This will bypass the cached version and fetch the most recent typo-free version.
Comments are always appreciated.
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