Re: [gpsd-users] Getting fixes without polling

[Gary E. Miller]

Yo Lisandro!

On Wed, 01 Feb 2017 10:57:31 -0300
Lisandro Damián Nicanor Pérez Meyer <address@hidden> wrote:

> On martes, 31 de enero de 2017 11:00:38 ART Gary E. Miller wrote:
> > Yo Lisandro!
> > 
> > On Tue, 31 Jan 2017 12:23:37 -0300
> > 
> > Lisandro Damián Nicanor Pérez Meyer <address@hidden> wrote:  
> > > Is there any way to get fixes without the need to poll? I guess
> > > dbus might help here, but...  
> > 
> > Open the gpsd port, 2947, and tell it to stream JSON at you.  
> 
> I think that's what I'm doing:
> 
> result = gps_open("localhost", 37455, &mGPSData);
> [check result...]
> result = gps_stream(&mGPSData,WATCH_ENABLE|WATCH_JSON, NULL);
> [check result...]

No, you are using libgps, a big layer of complexity.  I'm saying just
use fopen() and then wait on a select().

> But then I need a timer to poll using gps_read(). Is there a way to
> have a callback in order to avoid the timer?

Have you looked at gps_waiting() or gps_stream().  Have you read the example
on the libgps man page?

RGDS
GARY
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Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
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