After doing alot of nmea stuff for marine navagation it sounds like you are
getting the heading from the gps not the fluxgate compass. The gps heading
is only calculated when the receiver is moving. The compass outputs headings
continually, at least on marine gear.
Ralph DiMola
MIS Director
Evergreen Information Services
[email protected]
-----Original message-----
From: Thomas McGrath III <[email protected]>
To: How to use LiveCode <[email protected]>
Sent: Sat, Feb 11, 2012 02:27:23 GMT+00:00
Subject: iphoneCurrentHeading() gotcha
This is a heads up on using iphoneCurrentHeading() and its returned
timestamp.
I struggled with this for many hours. It turns out that the heading and the
timeStamp from the iphoneCurrentHeading() only return the heading and time
from 'when' the last location was last changed. It returns the last known
timestamp and heading and not a new heading(same heading) and a new
timestamp.
Calling it repeatedly returns the same results, which makes sense for the
heading (since it has not changed so it is not returning a new heading) but
I thought repeated calling the currentheading would give me a new timestamp
from the new call to it. Not so.
-- Tom McGrath III
http://lazyriver.on-rev.com
[email protected]
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