#! /usr/local/bin/python
#-*- coding: utf-8 -*-
import gps, os, time
g = gps.gps(mode=gps.WATCH_NEWSTYLE)
while 1:
os.system(’clear’)
g.poll()
if gps.PACKET_SET:
g.stream()

print
print ‘ GPS reading’
print ‘—————————————-’
print ‘latitude ‘ , g.fix.latitude
print ‘longitude ‘ , g.fix.longitude
print ‘time utc ‘ , g.utc,’ + ‘, g.fix.time
print ‘altitude ‘ , g.fix.altitude
print ‘epc ‘ , g.fix.epc
print ‘epd ‘ , g.fix.epd
print ‘eps ‘ , g.fix.eps
print ‘epx ‘ , g.fix.epx
print ‘epv ‘ , g.fix.epv
print ‘ept ‘ , g.fix.ept
print ’speed ‘ , g.fix.speed
print ‘climb ‘ , g.fix.climb
print ‘track ‘ , g.fix.track
print ‘mode ‘ , g.fix.mode
print
print ’sats ‘ , g.satellites

time.sleep(1)

It works quite well when I enable the new style mode.

#!/usr/bin/python

import gps, os, time

session = gps.gps()
session.poll()
session.stream()

while 1:
os.system(’clear’)
session.poll()
# a = altitude, d = date/time, m=mode,
# o=postion/fix, s=status, y=satellites

print
print ‘ GPS reading’
print ‘—————————————-’
print ‘latitude ‘ , session.fix.latitude
print ‘longitude ‘ , session.fix.longitude
print ‘time utc ‘ , session.utc, session.fix.time
print ‘altitude ‘ , session.fix.altitude
print ‘epx ‘ , session.fix.epx
print ‘epv ‘ , session.fix.epv
print ‘ept ‘ , session.fix.ept
print ’speed ‘ , session.fix.speed
print ‘climb ‘ , session.fix.climb

print
print ‘ Satellites (total of’, len(session.satellites) , ‘ in view)’
for i in session.satellites:
print ‘\t’, i

time.sleep(3)

is there something i’m missing?

In case you arrived in the year 2010, things have indeed changed!

For the good:

eep ;
import gps

print session


I leave it to you to “implement” the while loop and the sleep

Also I had to check some terminology on the original script:

eph == Precision horizontal
epv == Precision vertical
ept == Precision total

in case you want to use the above script, it IS possible just delete the query line:

session.query(’admosy’)

and amend eph to epx:

print ‘epx ‘ , session.fix.epx

In full:


import gps, os, time

time.sleep(3)


Hack on!

Steve Clemenet

You should contact the gpsd developers list for more information .. I am not personally involved in the project so I cant answer your questions about how the interface may change.

Thank you for all information of gps.py.

Though you may know very well, I found how to connect
to the other gpsd server over network. It is just to start
an application program by

import gps
session = gps.gps(host=hostname, port=’2947′)

hostname should be text of the hostname or of the IP address.
To connect to the local server, hostname=’localhost’.

By copying the gps.py to my WINDOWS PC, my PC can read
data from the LINUX gpsd server over network.
Thanks for very easy programming with gps.py

I have one question. Now it is announced that the gpsd
command interface will be changed soon. What will be
the change of the gps.py interface? Explanation of the JASON
command interface is not very clear to me. I am sorry.
Even some suggestions are useful. Thanks for your help.

Mamoru Yamamoto
Kyoto University, JAPAN

I get an error when running this:

Traceback (most recent call last):
File “”, line 7, in
AttributeError: gps instance has no attribute ‘query’

Has query() been removed from gps.py?
What needs to be done to fix the above script so it works?

Thanks

It just has to be

s = str(session.satellites[i])

and then

print s[-1]

works as intended and gives me either “y” or “n”.

I did not expect it to be THAT simple !
Now I feel a little bit ashamed… *smile*