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2009-12-15
, 21:07
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Posts: 486 |
Thanked: 153 times |
Joined on Sep 2009
@ New York City
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#12
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Originally Posted by yerga
I finally had a chance to look at this, and it seems there are some problems:
The GPS module is being worked by the Pymaemo guys. They have something in the SVN and they will be pushing a package to the repository soon enough.
http://wiki.maemo.org/PyMaemo/Using_Location_API
https://bugs.maemo.org/show_bug.cgi?id=5748#c2
using the example code:
Code:
import location
import gobject
def on_error(control, error, data):
print "location error: %d... quitting" % error
data.quit()
def on_changed(device, data):
if not device:
return
if device.fix:
if device.fix[1] & location.GPS_DEVICE_LATLONG_SET:
print "lat = %f, long = %f" % device.fix[4:6]
data.stop()
def on_stop(control, data):
print "quitting"
data.quit()
def start_location(data):
data.start()
return False
loop = gobject.MainLoop()
control = location.GPSDControl.get_default()
device = location.GPSDevice()
control.set_properties(preferred_method=location.METHOD_USER_SELECTED,
preferred_interval=location.INTERVAL_DEFAULT)
control.connect("error-verbose", on_error, loop)
device.connect("changed", on_changed, control)
control.connect("gpsd-stopped", on_stop, loop)
gobject.idle_add(start_location, control)
loop.run()
Code:
Nokia-N900-42-11:~# python test-location.py lat = 39.400000, long = 0.000000 quitting
Lat is 1.4 degrees south of my current position, and Long is zero which isn't right either....
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2009-12-16
, 01:48
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Posts: 486 |
Thanked: 153 times |
Joined on Sep 2009
@ New York City
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#13
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Follow up to this (I got it working)
I posted my question to the pymaemo developer list and one of the developers, David, pointed out the problem with the code exiting the first time on_changed() gets called when it hasn't fulling acquired a fix. Commenting out the data.stop() line allows a 2nd call to acquire the full fix:
Also, I had updated my location server from supl.nokia.com to supl.google.com per this post: http://talk.maemo.org/showpost.php?p...3&postcount=14
Allowed me to get a quick network-based fix in the Ovi Maps app indoors. Before using the old server I could never get a fix.
Last edited by hypnotik; 2009-12-16 at 01:56.
I posted my question to the pymaemo developer list and one of the developers, David, pointed out the problem with the code exiting the first time on_changed() gets called when it hasn't fulling acquired a fix. Commenting out the data.stop() line allows a 2nd call to acquire the full fix:
Code:
Nokia-N900-42-11:~# python test-location2.py lat = 39.400000, long = 0.000000 lat = 40.796683, long = -73.922741
Allowed me to get a quick network-based fix in the Ovi Maps app indoors. Before using the old server I could never get a fix.
__________________
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My technology blog posts
follow me on twitter
Last edited by hypnotik; 2009-12-16 at 01:56.
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2010-03-18
, 18:50
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Posts: 217 |
Thanked: 20 times |
Joined on Jan 2010
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#14
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Hi
Do you have and example like this but using ctypes?
I need a faster refresh and this wrapper only allows 1 sec or higher
thanks
Do you have and example like this but using ctypes?
I need a faster refresh and this wrapper only allows 1 sec or higher
thanks
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2010-03-22
, 18:02
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Posts: 53 |
Thanked: 90 times |
Joined on Nov 2009
@ Manaus, Brazil
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#15
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Originally Posted by dhcmega
Have you tried playing with the python-location? See http://wiki.maemo.org/PyMaemo/Using_Location_API for an example .
Hi
Do you have and example like this but using ctypes?
I need a faster refresh and this wrapper only allows 1 sec or higher
thanks
__________________
Anderson Lizardo
Anderson Lizardo
| The Following User Says Thank You to lizardo For This Useful Post: | ||
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2010-04-01
, 20:38
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Posts: 217 |
Thanked: 20 times |
Joined on Jan 2010
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#16
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lizardo, that is the one i have used. but it only allows a max rate of 1 position refresh per second and i need a position refresh of at least 0.1 of second.
thanks
thanks
I not going to attempt to migrate the code because I don't have an n900 device to test with. If someone else would like to try it, it should involve making the python ctypes structures and function calls line up with whatever is now changed in the C API. This would involve chasing through the new liblocation docs and header files. The python wrapper is very thin so there's not a whole lot that can be going wrong, unless the new API is radically different.