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+--- Thread: Multiple GPS apps? (/showthread.php?tid=5094)
Multiple GPS apps? - deanfourie - 2024-01-14
Hi there,
Is it possible for multiple apps to all use the stream from my GPS simultaneously?
I seem to keep getting random, short disconnects from both OCPN and also avnav.
I have it setup to send the Serial DATA to GPSD, then setup the GPSD connection to OCPN.
is it better to do it through SK?
Thanks
RE: Multiple GPS apps? - BlackSea - 2024-01-14
I am afraid you have not understood the philosophy of OpenPlotter. All data streams (NMEA2000, NMEA0183, I²C, Onewire etc.) go purely to SignalK. The SignalK multiplexes the whole thing and then makes data available to either OpenCPN or AvNav via the network (SignalK on port 3000).
RE: Multiple GPS apps? - deanfourie - 2024-01-14
(2024-01-14, 12:58 PM)BlackSea Wrote: I am afraid you have not understood the philosophy of OpenPlotter. All data streams (NMEA2000, NMEA0183, I²C, Onewire etc.) go purely to SignalK. The SignalK multiplexes the whole thing and then makes data available to either OpenCPN or AvNav via the network (SignalK on port 3000).
Sure, I understand this.
But again, If using GPS and sending it to SignalK, Only one source can read GPS data at any one time? Or can multiple sources read the data at the same time from the GPS?
Im trying to use 3 applications that require GPS simultanously instead of going and buying 3 different GPS receivers.
Thanks
RE: Multiple GPS apps? - BlackSea - 2024-01-14
Once more:
Signalk reads your GPS and OpenCPN/AvNav consumes from SignalK
RE: Multiple GPS apps? - tkurki - 2024-01-15
Only one application can read from the GPS device.
Typically apps that use GPS have other options for accessing the nmea 0183 data than direct device access: tcp, udp or gpsd. Are these possible? Signal K can provide tcp and udp and you can configure gpsd to access the device and signalk to read from gpsd.
RE: Multiple GPS apps? - PaddyB - 2024-01-15
Gps connects to signalk. Opencpn et al connect to tcp port 10110. Connect as many programs as you want to this port.
All NMEA0183 data going into signalk gets sent out again by default on tcp port 10110.
https://openplotter.readthedocs.io/en/3.x.x/