Re: [gpsd-users] Help for python next()

[Deven Hickingbotham]

Try removing the time.sleep(1) or reducing it.

All the print statements are going to take a lot of time.  Add the 1 
second sleep and this is going to cause the gap between gps and system 
time to grow.



On 3/17/2016 3:31 PM, bruno suarez wrote:
> Hello,
>
> I made my first very simple test program in python:
>
> mongps=gps(mode=WATCH_ENABLE)
> while True:
>    os.system('clear')
>    mongps.next()  # recupeation de la phrase suivante
>    print "Mode" , mongps.fix.mode
>    print "Latitude       " , mongps.fix.latitude
>    print "Longitude    " , mongps.fix.longitude
>    #....
>    print "DateTime GPS    " , mongps.utc   # time  GPS
>    print "DateTime Sys    " , datetime.datetime.now() # time system
>    time.sleep(1)
>
>
> I understand that the next() function allows to unstack a sentence gpsd
> respecting the order of arrival.
> So after a few secondes there is a gap between the system time and GPS
> time displayed.
> Is it possible, without using thread (I saw examples) to recover the
> last sentence of GPSD and therefore have the latest GPS information ?
>
> Thanks
>
> Bruno Suarez
>
> *START : *
> Mode 1
> Latitude        0.0
> Longitude       0.0
> DateTime GPS
> DateTime Sys    2016-03-17 23:18:16.074113
> Mode 3
> Latitude        47.213430255
> Longitude       -0.738763992
> DateTime GPS    2016-03-17T22:18:15.000Z
> DateTime Sys    2016-03-17 23:18:17.075002  (+1 UTC)
> ....
> *After few minutes*
> Mode 3
> Latitude        47.21337999
> Longitude       -0.738750282
> DateTime GPS    2016-03-17T22:24:02.000Z
> DateTime Sys    2016-03-17 23:25:48.494798   (+1UTC)