[gpsd-users] Mistimed Reads Give Me 0.5 Hz Updates

[Constantin Savtchenko]

Hello all,
   I have been playing around with the gpsmm class to access my gps and 
I am having trouble with my reads.  My gps updates at 1 Hz, yet my reads 
occurs at 0.5s followed by a 1.5s interval.  This creates the condition 
that my lat lon coordinates are updated ever 2 seconds (opposed to every 
second.)  I present an example situation, we see the "online" unix time, 
followed by the "skyview" timestamp.

(s)                      (s)
0               -         0
0.5            -        0
2               -         2
2.5            -         2
4               -         4
....

And so on.  The time boundaries of the reads are causing problems.  I 
have no idea what I'm doing wrong, I removed all forms of blocking, and 
simply call

(newdata = gps_rec.read()) != NULL)
    printThings

as fast as possible.  Any advice or links would be greatly appreciated, 
as all of the documentation on the site for the c++ class does not match 
the c++ class I am using.  I am using the newest release, compiled from 
sources.  Thank you in advance.

Constantin