GPS.Status

[alfcen]

Hi
I process GPS data further whilst GPS.Status is "A". Upon hardware interruption or after switching off an external GPS unit, GPS.Status remains "A" (also after GPS.GPSBuffer=""). I know GPS.Status is read-only, but I need to clear that "A". Any work-around in town?
Thanks & Cheers
Robert

[Erel]

The GPS properties (all properties) are only updated after a GPSDecoded event.
You should only check these values inside the GPSDecoded event.
The GPS tutorial handles hardware interruptions: http://www.basic4ppc.com/forum/tutorials/1093-gps-application-part-i.html

[alfcen]

Hi Erel

Thanks a lot for your warp speed response.

>The GPS properties (all properties) are only updated after a GPSDecoded event.

That is exactly my problem. The properties are updated as GPS data is streaming in while the last received data remains after interruption or GPS power-off.

It would be great to have something like a GPS.Clear command that would, amongst others, set GPS.Status to "V" or "". In the pipeline?

Cheers
Robert

[Erel]

I think that GPS.Clear will make the GPS library more complicated.
Instead of calling GPS.Clear you can use a global variable that holds the custom validity status.

[Henry]

As I understand gps lib has nothig to do with gps hardware so it can't check status. But maybe there could be some flag for timeout? So I can see that decoded data is too old for processing and I shouldn't use it (or use it "at own risk").

[Erel]

See the GPS tutorial for a timeout implementation.
The GPS library just parses the data.

[alfcen]

Erel, I am a fool, GPS.New1 added to the interruption routine does the job formidably.

Sorry for bothering you. I might be a good idea to sleep a night over before crying out for help